Merge pull request #39649 from swarnimarun/master-visualscript-refactor

Visual Script Refactor

4 files changed, 1199 insertions, 1793 deletions

diff --git a/modules/visual_script/visual_script.cpp b/modules/visual_script/visual_script.cpp
index 1ea2a80788..af8b1e9cc1 100644
--- a/modules/visual_script/visual_script.cpp
+++ b/modules/visual_script/visual_script.cpp
@@ -36,7 +36,7 @@
 #include "scene/main/node.h"
 #include "visual_script_nodes.h"
 
-//used by editor, this is not really saved
+// Used by editor, this is not really saved.
 void VisualScriptNode::set_breakpoint(bool p_breakpoint) {
 	breakpoint = p_breakpoint;
 }
@@ -55,8 +55,8 @@ void VisualScriptNode::set_default_input_value(int p_port, const Variant &p_valu
 	default_input_values[p_port] = p_value;
 
 #ifdef TOOLS_ENABLED
-	for (Set<VisualScript *>::Element *E = scripts_used.front(); E; E = E->next()) {
-		E->get()->set_edited(true);
+	if (script_used.is_valid()) {
+		script_used->set_edited(true);
 	}
 #endif
 }
@@ -73,14 +73,14 @@ void VisualScriptNode::_set_default_input_values(Array p_values) {
 void VisualScriptNode::validate_input_default_values() {
 	default_input_values.resize(MAX(default_input_values.size(), get_input_value_port_count())); //let it grow as big as possible, we don't want to lose values on resize
 
-	//actually validate on save
+	// Actually validate on save.
 	for (int i = 0; i < get_input_value_port_count(); i++) {
 		Variant::Type expected = get_input_value_port_info(i).type;
 
 		if (expected == Variant::NIL || expected == default_input_values[i].get_type()) {
 			continue;
 		} else {
-			//not the same, reconvert
+			// Not the same, reconvert.
 			Callable::CallError ce;
 			Variant existing = default_input_values[i];
 			const Variant *existingp = &existing;
@@ -94,7 +94,7 @@ void VisualScriptNode::validate_input_default_values() {
 }
 
 Array VisualScriptNode::_get_default_input_values() const {
-	//validate on save, since on load there is little info about this
+	// Validate on save, since on load there is little info about this.
 	Array values = default_input_values;
 	values.resize(get_input_value_port_count());
 
@@ -118,6 +118,8 @@ void VisualScriptNode::_bind_methods() {
 }
 
 VisualScriptNode::TypeGuess VisualScriptNode::guess_output_type(TypeGuess *p_inputs, int p_output) const {
+	ERR_FAIL_COND_V(get_output_value_port_count() <= p_output, TypeGuess());
+
 	PropertyInfo pinfo = get_output_value_port_info(p_output);
 
 	TypeGuess tg;
@@ -131,11 +133,7 @@ VisualScriptNode::TypeGuess VisualScriptNode::guess_output_type(TypeGuess *p_inp
 }
 
 Ref<VisualScript> VisualScriptNode::get_visual_script() const {
-	if (scripts_used.size()) {
-		return Ref<VisualScript>(scripts_used.front()->get());
-	}
-
-	return Ref<VisualScript>();
+	return script_used;
 }
 
 VisualScriptNode::VisualScriptNode() {
@@ -165,13 +163,15 @@ VisualScriptNodeInstance::~VisualScriptNodeInstance() {
 	}
 }
 
-void VisualScript::add_function(const StringName &p_name) {
+void VisualScript::add_function(const StringName &p_name, int p_func_node_id) {
 	ERR_FAIL_COND(instances.size());
 	ERR_FAIL_COND(!String(p_name).is_valid_identifier());
 	ERR_FAIL_COND(functions.has(p_name));
+	ERR_FAIL_COND(variables.has(p_name));
+	ERR_FAIL_COND(custom_signals.has(p_name));
 
 	functions[p_name] = Function();
-	functions[p_name].scroll = Vector2(-50, -100);
+	functions[p_name].func_id = p_func_node_id;
 }
 
 bool VisualScript::has_function(const StringName &p_name) const {
@@ -182,11 +182,7 @@ void VisualScript::remove_function(const StringName &p_name) {
 	ERR_FAIL_COND(instances.size());
 	ERR_FAIL_COND(!functions.has(p_name));
 
-	for (Map<int, Function::NodeData>::Element *E = functions[p_name].nodes.front(); E; E = E->next()) {
-		E->get().node->disconnect("ports_changed", callable_mp(this, &VisualScript::_node_ports_changed));
-		E->get().node->scripts_used.erase(this);
-	}
-
+	// Let the editor handle the node removal.
 	functions.erase(p_name);
 }
 
@@ -207,53 +203,36 @@ void VisualScript::rename_function(const StringName &p_name, const StringName &p
 	functions.erase(p_name);
 }
 
-void VisualScript::set_function_scroll(const StringName &p_name, const Vector2 &p_scroll) {
-	ERR_FAIL_COND(!functions.has(p_name));
-	functions[p_name].scroll = p_scroll;
+void VisualScript::set_scroll(const Vector2 &p_scroll) {
+	scroll = p_scroll;
 }
 
-Vector2 VisualScript::get_function_scroll(const StringName &p_name) const {
-	ERR_FAIL_COND_V(!functions.has(p_name), Vector2());
-	return functions[p_name].scroll;
+Vector2 VisualScript::get_scroll() const {
+	return scroll;
 }
 
 void VisualScript::get_function_list(List<StringName> *r_functions) const {
-	for (const Map<StringName, Function>::Element *E = functions.front(); E; E = E->next()) {
-		r_functions->push_back(E->key());
-	}
-
-	r_functions->sort_custom<StringName::AlphCompare>();
+	functions.get_key_list(r_functions);
+	// r_functions->sort_custom<StringName::AlphCompare>(); // Don't force sorting.
 }
 
 int VisualScript::get_function_node_id(const StringName &p_name) const {
 	ERR_FAIL_COND_V(!functions.has(p_name), -1);
 
-	return functions[p_name].function_id;
+	return functions[p_name].func_id;
 }
 
 void VisualScript::_node_ports_changed(int p_id) {
-	StringName function;
-
-	for (Map<StringName, Function>::Element *E = functions.front(); E; E = E->next()) {
-		if (E->get().nodes.has(p_id)) {
-			function = E->key();
-			break;
-		}
-	}
-
-	ERR_FAIL_COND(function == StringName());
-
-	Function &func = functions[function];
-	Ref<VisualScriptNode> vsn = func.nodes[p_id].node;
+	Ref<VisualScriptNode> vsn = nodes[p_id].node;
 
 	vsn->validate_input_default_values();
 
-	//must revalidate all the functions
+	// Must revalidate all the functions.
 
 	{
 		List<SequenceConnection> to_remove;
 
-		for (Set<SequenceConnection>::Element *E = func.sequence_connections.front(); E; E = E->next()) {
+		for (Set<SequenceConnection>::Element *E = sequence_connections.front(); E; E = E->next()) {
 			if (E->get().from_node == p_id && E->get().from_output >= vsn->get_output_sequence_port_count()) {
 				to_remove.push_back(E->get());
 			}
@@ -263,7 +242,7 @@ void VisualScript::_node_ports_changed(int p_id) {
 		}
 
 		while (to_remove.size()) {
-			func.sequence_connections.erase(to_remove.front()->get());
+			sequence_connections.erase(to_remove.front()->get());
 			to_remove.pop_front();
 		}
 	}
@@ -271,7 +250,7 @@ void VisualScript::_node_ports_changed(int p_id) {
 	{
 		List<DataConnection> to_remove;
 
-		for (Set<DataConnection>::Element *E = func.data_connections.front(); E; E = E->next()) {
+		for (Set<DataConnection>::Element *E = data_connections.front(); E; E = E->next()) {
 			if (E->get().from_node == p_id && E->get().from_port >= vsn->get_output_value_port_count()) {
 				to_remove.push_back(E->get());
 			}
@@ -281,63 +260,47 @@ void VisualScript::_node_ports_changed(int p_id) {
 		}
 
 		while (to_remove.size()) {
-			func.data_connections.erase(to_remove.front()->get());
+			data_connections.erase(to_remove.front()->get());
 			to_remove.pop_front();
 		}
 	}
 
 #ifdef TOOLS_ENABLED
-	set_edited(true); //something changed, let's set as edited
-	emit_signal("node_ports_changed", function, p_id);
+	set_edited(true); // Something changed, let's set as edited.
+	emit_signal("node_ports_changed", p_id);
 #endif
 }
 
-void VisualScript::add_node(const StringName &p_func, int p_id, const Ref<VisualScriptNode> &p_node, const Point2 &p_pos) {
+void VisualScript::add_node(int p_id, const Ref<VisualScriptNode> &p_node, const Point2 &p_pos) {
 	ERR_FAIL_COND(instances.size());
-	ERR_FAIL_COND(!functions.has(p_func));
-
-	for (Map<StringName, Function>::Element *E = functions.front(); E; E = E->next()) {
-		ERR_FAIL_COND(E->get().nodes.has(p_id)); //id can exist only one in script, even for different functions
-	}
+	ERR_FAIL_COND(nodes.has(p_id)); // ID can exist only one in script.
 
-	Function &func = functions[p_func];
-
-	if (Object::cast_to<VisualScriptFunction>(*p_node)) {
-		//the function indeed
-		ERR_FAIL_COND_MSG(func.function_id >= 0, "A function node has already been set here.");
-
-		func.function_id = p_id;
-	}
-
-	Function::NodeData nd;
+	NodeData nd;
 	nd.node = p_node;
 	nd.pos = p_pos;
 
 	Ref<VisualScriptNode> vsn = p_node;
 	vsn->connect("ports_changed", callable_mp(this, &VisualScript::_node_ports_changed), varray(p_id));
-	vsn->scripts_used.insert(this);
-	vsn->validate_input_default_values(); // Validate when fully loaded
+	vsn->script_used = Ref<VisualScript>(this);
+	vsn->validate_input_default_values(); // Validate when fully loaded.
 
-	func.nodes[p_id] = nd;
+	nodes[p_id] = nd;
 }
 
-void VisualScript::remove_node(const StringName &p_func, int p_id) {
+void VisualScript::remove_node(int p_id) {
 	ERR_FAIL_COND(instances.size());
-	ERR_FAIL_COND(!functions.has(p_func));
-	Function &func = functions[p_func];
-
-	ERR_FAIL_COND(!func.nodes.has(p_id));
+	ERR_FAIL_COND(!nodes.has(p_id));
 	{
 		List<SequenceConnection> to_remove;
 
-		for (Set<SequenceConnection>::Element *E = func.sequence_connections.front(); E; E = E->next()) {
+		for (Set<SequenceConnection>::Element *E = sequence_connections.front(); E; E = E->next()) {
 			if (E->get().from_node == p_id || E->get().to_node == p_id) {
 				to_remove.push_back(E->get());
 			}
 		}
 
 		while (to_remove.size()) {
-			func.sequence_connections.erase(to_remove.front()->get());
+			sequence_connections.erase(to_remove.front()->get());
 			to_remove.pop_front();
 		}
 	}
@@ -345,122 +308,88 @@ void VisualScript::remove_node(const StringName &p_func, int p_id) {
 	{
 		List<DataConnection> to_remove;
 
-		for (Set<DataConnection>::Element *E = func.data_connections.front(); E; E = E->next()) {
+		for (Set<DataConnection>::Element *E = data_connections.front(); E; E = E->next()) {
 			if (E->get().from_node == p_id || E->get().to_node == p_id) {
 				to_remove.push_back(E->get());
 			}
 		}
 
 		while (to_remove.size()) {
-			func.data_connections.erase(to_remove.front()->get());
+			data_connections.erase(to_remove.front()->get());
 			to_remove.pop_front();
 		}
 	}
 
-	if (Object::cast_to<VisualScriptFunction>(func.nodes[p_id].node.ptr())) {
-		func.function_id = -1; //revert to invalid
-	}
+	nodes[p_id].node->disconnect("ports_changed", callable_mp(this, &VisualScript::_node_ports_changed));
+	nodes[p_id].node->script_used.unref();
 
-	func.nodes[p_id].node->disconnect("ports_changed", callable_mp(this, &VisualScript::_node_ports_changed));
-	func.nodes[p_id].node->scripts_used.erase(this);
-
-	func.nodes.erase(p_id);
+	nodes.erase(p_id);
 }
 
-bool VisualScript::has_node(const StringName &p_func, int p_id) const {
-	ERR_FAIL_COND_V(!functions.has(p_func), false);
-	const Function &func = functions[p_func];
-
-	return func.nodes.has(p_id);
+bool VisualScript::has_node(int p_id) const {
+	return nodes.has(p_id);
 }
 
-Ref<VisualScriptNode> VisualScript::get_node(const StringName &p_func, int p_id) const {
-	ERR_FAIL_COND_V(!functions.has(p_func), Ref<VisualScriptNode>());
-	const Function &func = functions[p_func];
-
-	ERR_FAIL_COND_V(!func.nodes.has(p_id), Ref<VisualScriptNode>());
+Ref<VisualScriptNode> VisualScript::get_node(int p_id) const {
+	ERR_FAIL_COND_V(!nodes.has(p_id), Ref<VisualScriptNode>());
 
-	return func.nodes[p_id].node;
+	return nodes[p_id].node;
 }
 
-void VisualScript::set_node_position(const StringName &p_func, int p_id, const Point2 &p_pos) {
+void VisualScript::set_node_position(int p_id, const Point2 &p_pos) {
 	ERR_FAIL_COND(instances.size());
-	ERR_FAIL_COND(!functions.has(p_func));
-	Function &func = functions[p_func];
-
-	ERR_FAIL_COND(!func.nodes.has(p_id));
-	func.nodes[p_id].pos = p_pos;
+	ERR_FAIL_COND(!nodes.has(p_id));
+	nodes[p_id].pos = p_pos;
 }
 
-Point2 VisualScript::get_node_position(const StringName &p_func, int p_id) const {
-	ERR_FAIL_COND_V(!functions.has(p_func), Point2());
-	const Function &func = functions[p_func];
-
-	ERR_FAIL_COND_V(!func.nodes.has(p_id), Point2());
-	return func.nodes[p_id].pos;
+Point2 VisualScript::get_node_position(int p_id) const {
+	ERR_FAIL_COND_V(!nodes.has(p_id), Point2());
+	return nodes[p_id].pos;
 }
 
-void VisualScript::get_node_list(const StringName &p_func, List<int> *r_nodes) const {
-	ERR_FAIL_COND(!functions.has(p_func));
-	const Function &func = functions[p_func];
-
-	for (const Map<int, Function::NodeData>::Element *E = func.nodes.front(); E; E = E->next()) {
-		r_nodes->push_back(E->key());
-	}
+void VisualScript::get_node_list(List<int> *r_nodes) const {
+	nodes.get_key_list(r_nodes);
 }
 
-void VisualScript::sequence_connect(const StringName &p_func, int p_from_node, int p_from_output, int p_to_node) {
+void VisualScript::sequence_connect(int p_from_node, int p_from_output, int p_to_node) {
 	ERR_FAIL_COND(instances.size());
-	ERR_FAIL_COND(!functions.has(p_func));
-	Function &func = functions[p_func];
 
 	SequenceConnection sc;
 	sc.from_node = p_from_node;
 	sc.from_output = p_from_output;
 	sc.to_node = p_to_node;
-	ERR_FAIL_COND(func.sequence_connections.has(sc));
+	ERR_FAIL_COND(sequence_connections.has(sc));
 
-	func.sequence_connections.insert(sc);
+	sequence_connections.insert(sc);
 }
 
-void VisualScript::sequence_disconnect(const StringName &p_func, int p_from_node, int p_from_output, int p_to_node) {
-	ERR_FAIL_COND(!functions.has(p_func));
-	Function &func = functions[p_func];
-
+void VisualScript::sequence_disconnect(int p_from_node, int p_from_output, int p_to_node) {
 	SequenceConnection sc;
 	sc.from_node = p_from_node;
 	sc.from_output = p_from_output;
 	sc.to_node = p_to_node;
-	ERR_FAIL_COND(!func.sequence_connections.has(sc));
+	ERR_FAIL_COND(!sequence_connections.has(sc));
 
-	func.sequence_connections.erase(sc);
+	sequence_connections.erase(sc);
 }
 
-bool VisualScript::has_sequence_connection(const StringName &p_func, int p_from_node, int p_from_output, int p_to_node) const {
-	ERR_FAIL_COND_V(!functions.has(p_func), false);
-	const Function &func = functions[p_func];
-
+bool VisualScript::has_sequence_connection(int p_from_node, int p_from_output, int p_to_node) const {
 	SequenceConnection sc;
 	sc.from_node = p_from_node;
 	sc.from_output = p_from_output;
 	sc.to_node = p_to_node;
 
-	return func.sequence_connections.has(sc);
+	return sequence_connections.has(sc);
 }
 
-void VisualScript::get_sequence_connection_list(const StringName &p_func, List<SequenceConnection> *r_connection) const {
-	ERR_FAIL_COND(!functions.has(p_func));
-	const Function &func = functions[p_func];
-
-	for (const Set<SequenceConnection>::Element *E = func.sequence_connections.front(); E; E = E->next()) {
+void VisualScript::get_sequence_connection_list(List<SequenceConnection> *r_connection) const {
+	for (const Set<SequenceConnection>::Element *E = sequence_connections.front(); E; E = E->next()) {
 		r_connection->push_back(E->get());
 	}
 }
 
-void VisualScript::data_connect(const StringName &p_func, int p_from_node, int p_from_port, int p_to_node, int p_to_port) {
+void VisualScript::data_connect(int p_from_node, int p_from_port, int p_to_node, int p_to_port) {
 	ERR_FAIL_COND(instances.size());
-	ERR_FAIL_COND(!functions.has(p_func));
-	Function &func = functions[p_func];
 
 	DataConnection dc;
 	dc.from_node = p_from_node;
@@ -468,72 +397,55 @@ void VisualScript::data_connect(const StringName &p_func, int p_from_node, int p
 	dc.to_node = p_to_node;
 	dc.to_port = p_to_port;
 
-	ERR_FAIL_COND(func.data_connections.has(dc));
+	ERR_FAIL_COND(data_connections.has(dc));
 
-	func.data_connections.insert(dc);
+	data_connections.insert(dc);
 }
 
-void VisualScript::data_disconnect(const StringName &p_func, int p_from_node, int p_from_port, int p_to_node, int p_to_port) {
-	ERR_FAIL_COND(!functions.has(p_func));
-	Function &func = functions[p_func];
-
+void VisualScript::data_disconnect(int p_from_node, int p_from_port, int p_to_node, int p_to_port) {
 	DataConnection dc;
 	dc.from_node = p_from_node;
 	dc.from_port = p_from_port;
 	dc.to_node = p_to_node;
 	dc.to_port = p_to_port;
 
-	ERR_FAIL_COND(!func.data_connections.has(dc));
+	ERR_FAIL_COND(!data_connections.has(dc));
 
-	func.data_connections.erase(dc);
+	data_connections.erase(dc);
 }
 
-bool VisualScript::has_data_connection(const StringName &p_func, int p_from_node, int p_from_port, int p_to_node, int p_to_port) const {
-	ERR_FAIL_COND_V(!functions.has(p_func), false);
-	const Function &func = functions[p_func];
-
+bool VisualScript::has_data_connection(int p_from_node, int p_from_port, int p_to_node, int p_to_port) const {
 	DataConnection dc;
 	dc.from_node = p_from_node;
 	dc.from_port = p_from_port;
 	dc.to_node = p_to_node;
 	dc.to_port = p_to_port;
 
-	return func.data_connections.has(dc);
+	return data_connections.has(dc);
 }
 
-bool VisualScript::is_input_value_port_connected(const StringName &p_func, int p_node, int p_port) const {
-	ERR_FAIL_COND_V(!functions.has(p_func), false);
-	const Function &func = functions[p_func];
-
-	for (const Set<DataConnection>::Element *E = func.data_connections.front(); E; E = E->next()) {
+bool VisualScript::is_input_value_port_connected(int p_node, int p_port) const {
+	for (const Set<DataConnection>::Element *E = data_connections.front(); E; E = E->next()) {
 		if (E->get().to_node == p_node && E->get().to_port == p_port) {
 			return true;
 		}
 	}
-
 	return false;
 }
 
-bool VisualScript::get_input_value_port_connection_source(const StringName &p_func, int p_node, int p_port, int *r_node, int *r_port) const {
-	ERR_FAIL_COND_V(!functions.has(p_func), false);
-	const Function &func = functions[p_func];
-
-	for (const Set<DataConnection>::Element *E = func.data_connections.front(); E; E = E->next()) {
+bool VisualScript::get_input_value_port_connection_source(int p_node, int p_port, int *r_node, int *r_port) const {
+	for (const Set<DataConnection>::Element *E = data_connections.front(); E; E = E->next()) {
 		if (E->get().to_node == p_node && E->get().to_port == p_port) {
 			*r_node = E->get().from_node;
 			*r_port = E->get().from_port;
 			return true;
 		}
 	}
-
 	return false;
 }
 
-void VisualScript::get_data_connection_list(const StringName &p_func, List<DataConnection> *r_connection) const {
-	ERR_FAIL_COND(!functions.has(p_func));
-	const Function &func = functions[p_func];
-
-	for (const Set<DataConnection>::Element *E = func.data_connections.front(); E; E = E->next()) {
+void VisualScript::get_data_connection_list(List<DataConnection> *r_connection) const {
+	for (const Set<DataConnection>::Element *E = data_connections.front(); E; E = E->next()) {
 		r_connection->push_back(E->get());
 	}
 }
@@ -653,11 +565,8 @@ Dictionary VisualScript::_get_variable_info(const StringName &p_name) const {
 }
 
 void VisualScript::get_variable_list(List<StringName> *r_variables) const {
-	for (Map<StringName, Variable>::Element *E = variables.front(); E; E = E->next()) {
-		r_variables->push_back(E->key());
-	}
-
-	r_variables->sort_custom<StringName::AlphCompare>();
+	variables.get_key_list(r_variables);
+	// r_variables->sort_custom<StringName::AlphCompare>(); // Don't force it.
 }
 
 void VisualScript::set_instance_base_type(const StringName &p_type) {
@@ -680,24 +589,19 @@ void VisualScript::rename_variable(const StringName &p_name, const StringName &p
 
 	variables[p_new_name] = variables[p_name];
 	variables.erase(p_name);
-
-	List<StringName> funcs;
-	get_function_list(&funcs);
-	for (List<StringName>::Element *F = funcs.front(); F; F = F->next()) { // loop through all the functions
-		List<int> ids;
-		get_node_list(F->get(), &ids);
-		for (List<int>::Element *E = ids.front(); E; E = E->next()) {
-			Ref<VisualScriptVariableGet> nodeget = get_node(F->get(), E->get());
-			if (nodeget.is_valid()) {
-				if (nodeget->get_variable() == p_name) {
-					nodeget->set_variable(p_new_name);
-				}
-			} else {
-				Ref<VisualScriptVariableSet> nodeset = get_node(F->get(), E->get());
-				if (nodeset.is_valid()) {
-					if (nodeset->get_variable() == p_name) {
-						nodeset->set_variable(p_new_name);
-					}
+	List<int> ids;
+	get_node_list(&ids);
+	for (List<int>::Element *E = ids.front(); E; E = E->next()) {
+		Ref<VisualScriptVariableGet> nodeget = get_node(E->get());
+		if (nodeget.is_valid()) {
+			if (nodeget->get_variable() == p_name) {
+				nodeget->set_variable(p_new_name);
+			}
+		} else {
+			Ref<VisualScriptVariableSet> nodeset = get_node(E->get());
+			if (nodeset.is_valid()) {
+				if (nodeset->get_variable() == p_name) {
+					nodeset->set_variable(p_new_name);
 				}
 			}
 		}
@@ -808,23 +712,24 @@ void VisualScript::get_custom_signal_list(List<StringName> *r_custom_signals) co
 }
 
 int VisualScript::get_available_id() const {
-	int max_id = 0;
-	for (Map<StringName, Function>::Element *E = functions.front(); E; E = E->next()) {
-		if (E->get().nodes.is_empty()) {
-			continue;
+	// This is infinitely increasing,
+	// so one might want to implement a better solution,
+	// if the there is a case for huge number of nodes to be added to visual script.
+	List<int> nds;
+	nodes.get_key_list(&nds);
+	int max = -1;
+	for (const List<int>::Element *E = nds.front(); E; E = E->next()) {
+		if (E->get() > max) {
+			max = E->get();
 		}
-
-		int last_id = E->get().nodes.back()->key();
-		max_id = MAX(max_id, last_id + 1);
 	}
-
-	return max_id;
+	return (max + 1);
 }
 
 /////////////////////////////////
 
 bool VisualScript::can_instance() const {
-	return true; //ScriptServer::is_scripting_enabled();
+	return true; // ScriptServer::is_scripting_enabled();
 }
 
 StringName VisualScript::get_instance_base_type() const {
@@ -832,7 +737,7 @@ StringName VisualScript::get_instance_base_type() const {
 }
 
 Ref<Script> VisualScript::get_base_script() const {
-	return Ref<Script>(); // no inheritance in visual script
+	return Ref<Script>(); // No inheritance in visual script.
 }
 
 #ifdef TOOLS_ENABLED
@@ -842,20 +747,23 @@ void VisualScript::_placeholder_erased(PlaceHolderScriptInstance *p_placeholder)
 
 void VisualScript::_update_placeholders() {
 	if (placeholders.size() == 0) {
-		return; //no bother if no placeholders
+		return; // No bother if no placeholders.
 	}
 	List<PropertyInfo> pinfo;
 	Map<StringName, Variant> values;
 
-	for (Map<StringName, Variable>::Element *E = variables.front(); E; E = E->next()) {
-		if (!E->get()._export) {
+	List<StringName> keys;
+	variables.get_key_list(&keys);
+
+	for (List<StringName>::Element *E = keys.front(); E; E = E->next()) {
+		if (!variables[E->get()]._export) {
 			continue;
 		}
 
-		PropertyInfo p = E->get().info;
-		p.name = String(E->key());
+		PropertyInfo p = variables[E->get()].info;
+		p.name = String(E->get());
 		pinfo.push_back(p);
-		values[p.name] = E->get().default_value;
+		values[p.name] = variables[E->get()].default_value;
 	}
 
 	for (Set<PlaceHolderScriptInstance *>::Element *E = placeholders.front(); E; E = E->next()) {
@@ -875,17 +783,18 @@ ScriptInstance *VisualScript::instance_create(Object *p_this) {
 		List<PropertyInfo> pinfo;
 		Map<StringName, Variant> values;
 
-		for (Map<StringName, Variable>::Element *E = variables.front(); E; E = E->next()) {
-			if (!E->get()._export) {
+		List<StringName> keys;
+		variables.get_key_list(&keys);
+
+		for (const List<StringName>::Element *E = keys.front(); E; E = E->next()) {
+			if (!variables[E->get()]._export)
 				continue;
-			}
 
-			PropertyInfo p = E->get().info;
-			p.name = String(E->key());
+			PropertyInfo p = variables[E->get()].info;
+			p.name = String(E->get());
 			pinfo.push_back(p);
-			values[p.name] = E->get().default_value;
+			values[p.name] = variables[E->get()].default_value;
 		}
-
 		sins->update(pinfo, values);
 
 		return sins;
@@ -928,7 +837,7 @@ bool VisualScript::is_tool() const {
 }
 
 bool VisualScript::is_valid() const {
-	return true; //always valid
+	return true; // Always valid.
 }
 
 ScriptLanguage *VisualScript::get_language() const {
@@ -964,11 +873,14 @@ bool VisualScript::get_property_default_value(const StringName &p_property, Vari
 }
 
 void VisualScript::get_script_method_list(List<MethodInfo> *p_list) const {
-	for (Map<StringName, Function>::Element *E = functions.front(); E; E = E->next()) {
+	List<StringName> funcs;
+	functions.get_key_list(&funcs);
+
+	for (List<StringName>::Element *E = funcs.front(); E; E = E->next()) {
 		MethodInfo mi;
-		mi.name = E->key();
-		if (E->get().function_id >= 0) {
-			Ref<VisualScriptFunction> func = E->get().nodes[E->get().function_id].node;
+		mi.name = E->get();
+		if (functions[E->get()].func_id >= 0) {
+			Ref<VisualScriptFunction> func = nodes[functions[E->get()].func_id].node;
 			if (func.is_valid()) {
 				for (int i = 0; i < func->get_argument_count(); i++) {
 					PropertyInfo arg;
@@ -988,15 +900,15 @@ bool VisualScript::has_method(const StringName &p_method) const {
 }
 
 MethodInfo VisualScript::get_method_info(const StringName &p_method) const {
-	const Map<StringName, Function>::Element *E = functions.find(p_method);
-	if (!E) {
+	const Function funct = functions[p_method];
+	if (funct.func_id == -1) {
 		return MethodInfo();
 	}
 
 	MethodInfo mi;
-	mi.name = E->key();
-	if (E->get().function_id >= 0) {
-		Ref<VisualScriptFunction> func = E->get().nodes[E->get().function_id].node;
+	mi.name = p_method;
+	if (funct.func_id >= 0) {
+		Ref<VisualScriptFunction> func = nodes[funct.func_id].node;
 		if (func.is_valid()) {
 			for (int i = 0; i < func->get_argument_count(); i++) {
 				PropertyInfo arg;
@@ -1028,28 +940,18 @@ void VisualScript::get_script_property_list(List<PropertyInfo> *p_list) const {
 }
 
 int VisualScript::get_member_line(const StringName &p_member) const {
-#ifdef TOOLS_ENABLED
-	if (has_function(p_member)) {
-		for (Map<int, Function::NodeData>::Element *E = functions[p_member].nodes.front(); E; E = E->next()) {
-			if (Object::cast_to<VisualScriptFunction>(E->get().node.ptr())) {
-				return E->key();
-			}
-		}
-	}
-#endif
-	return -1;
+	return functions[p_member].func_id; // will be -1 if not found
 }
 
 #ifdef TOOLS_ENABLED
 bool VisualScript::are_subnodes_edited() const {
-	for (const Map<StringName, Function>::Element *E = functions.front(); E; E = E->next()) {
-		for (const Map<int, Function::NodeData>::Element *F = E->get().nodes.front(); F; F = F->next()) {
-			if (F->get().node->is_edited()) {
-				return true;
-			}
+	List<int> keys;
+	nodes.get_key_list(&keys);
+	for (const List<int>::Element *F = keys.front(); F; F = F->next()) {
+		if (nodes[F->get()].node->is_edited()) {
+			return true;
 		}
 	}
-
 	return false;
 }
 #endif
@@ -1140,85 +1042,41 @@ void VisualScript::_set_data(const Dictionary &p_data) {
 	Array funcs = d["functions"];
 	functions.clear();
 
-	Vector2 last_pos = Vector2(-100 * funcs.size(), -100 * funcs.size()); // this is the center of the last fn box
-	Vector2 last_size = Vector2(0.0, 0.0);
-
 	for (int i = 0; i < funcs.size(); i++) {
 		Dictionary func = funcs[i];
-
-		StringName name = func["name"];
-		//int id=func["function_id"];
-		add_function(name);
-
-		set_function_scroll(name, func["scroll"]);
-
-		Array nodes = func["nodes"];
-
-		if (!d.has("vs_unify") && nodes.size() > 0) {
-			Vector2 top_left = nodes[1];
-			Vector2 bottom_right = nodes[1];
-
-			for (int j = 0; j < nodes.size(); j += 3) {
-				Point2 pos = nodes[j + 1];
-				if (pos.y > top_left.y) {
-					top_left.y = pos.y;
-				}
-				if (pos.y < bottom_right.y) {
-					bottom_right.y = pos.y;
-				}
-				if (pos.x > bottom_right.x) {
-					bottom_right.x = pos.x;
-				}
-				if (pos.x < top_left.x) {
-					top_left.x = pos.x;
-				}
-			}
-
-			Vector2 size = Vector2(bottom_right.x - top_left.x, top_left.y - bottom_right.y);
-
-			Vector2 offset = last_pos + (last_size / 2.0) + (size / 2.0); // dunno I might just keep it in one axis but diagonal feels better....
-
-			last_pos = offset;
-			last_size = size;
-
-			for (int j = 0; j < nodes.size(); j += 3) {
-				add_node(name, nodes[j], nodes[j + 2], offset + nodes[j + 1]); // also add an additional buffer if you want to
-			}
-
-		} else {
-			for (int j = 0; j < nodes.size(); j += 3) {
-				add_node(name, nodes[j], nodes[j + 2], nodes[j + 1]);
-			}
+		add_function(func["name"], func["function_id"]);
+	}
+	{
+		Array nodes = d["nodes"];
+		for (int i = 0; i < nodes.size(); i += 3) {
+			add_node(nodes[i], nodes[i + 2], nodes[i + 1]);
 		}
-		Array sequence_connections = func["sequence_connections"];
 
+		Array sequence_connections = d["sequence_connections"];
 		for (int j = 0; j < sequence_connections.size(); j += 3) {
-			sequence_connect(name, sequence_connections[j + 0], sequence_connections[j + 1], sequence_connections[j + 2]);
+			sequence_connect(sequence_connections[j + 0], sequence_connections[j + 1], sequence_connections[j + 2]);
 		}
 
-		Array data_connections = func["data_connections"];
-
+		Array data_connections = d["data_connections"];
 		for (int j = 0; j < data_connections.size(); j += 4) {
-			data_connect(name, data_connections[j + 0], data_connections[j + 1], data_connections[j + 2], data_connections[j + 3]);
+			data_connect(data_connections[j + 0], data_connections[j + 1], data_connections[j + 2], data_connections[j + 3]);
 		}
 	}
+	is_tool_script = d["is_tool_script"];
+	scroll = d["scroll"];
 
-	if (d.has("is_tool_script")) {
-		is_tool_script = d["is_tool_script"];
-	} else {
-		is_tool_script = false;
-	}
-
-	// Takes all the rpc methods
+	// Takes all the rpc methods.
 	rpc_functions.clear();
 	rpc_variables.clear();
-	for (Map<StringName, Function>::Element *E = functions.front(); E; E = E->next()) {
-		if (E->get().function_id >= 0 && E->get().nodes.find(E->get().function_id)) {
-			Ref<VisualScriptFunction> vsf = E->get().nodes[E->get().function_id].node;
+	List<StringName> fns;
+	functions.get_key_list(&fns);
+	for (const List<StringName>::Element *E = fns.front(); E; E = E->next()) {
+		if (functions[E->get()].func_id >= 0 && nodes.has(functions[E->get()].func_id)) {
+			Ref<VisualScriptFunction> vsf = nodes[functions[E->get()].func_id].node;
 			if (vsf.is_valid()) {
 				if (vsf->get_rpc_mode() != MultiplayerAPI::RPC_MODE_DISABLED) {
 					ScriptNetData nd;
-					nd.name = E->key();
+					nd.name = E->get();
 					nd.mode = vsf->get_rpc_mode();
 					if (rpc_functions.find(nd) == -1) {
 						rpc_functions.push_back(nd);
@@ -1228,8 +1086,6 @@ void VisualScript::_set_data(const Dictionary &p_data) {
 		}
 	}
 
-	// Visual script doesn't have rset :(
-
 	// Sort so we are 100% that they are always the same.
 	rpc_functions.sort_custom<SortNetData>();
 }
@@ -1237,12 +1093,15 @@ void VisualScript::_set_data(const Dictionary &p_data) {
 Dictionary VisualScript::_get_data() const {
 	Dictionary d;
 	d["base_type"] = base_type;
+
 	Array vars;
-	for (const Map<StringName, Variable>::Element *E = variables.front(); E; E = E->next()) {
-		Dictionary var = _get_variable_info(E->key());
-		var["name"] = E->key(); //make sure it's the right one
-		var["default_value"] = E->get().default_value;
-		var["export"] = E->get()._export;
+	List<StringName> var_names;
+	variables.get_key_list(&var_names);
+	for (const List<StringName>::Element *E = var_names.front(); E; E = E->next()) {
+		Dictionary var = _get_variable_info(E->get());
+		var["name"] = E->get(); // Make sure it's the right one.
+		var["default_value"] = variables[E->get()].default_value;
+		var["export"] = variables[E->get()]._export;
 		vars.push_back(var);
 	}
 	d["variables"] = vars;
@@ -1264,50 +1123,45 @@ Dictionary VisualScript::_get_data() const {
 	d["signals"] = sigs;
 
 	Array funcs;
-
-	for (const Map<StringName, Function>::Element *E = functions.front(); E; E = E->next()) {
+	List<StringName> func_names;
+	functions.get_key_list(&func_names);
+	for (const List<StringName>::Element *E = func_names.front(); E; E = E->next()) {
 		Dictionary func;
-		func["name"] = E->key();
-		func["function_id"] = E->get().function_id;
-		func["scroll"] = E->get().scroll;
-
-		Array nodes;
-
-		for (const Map<int, Function::NodeData>::Element *F = E->get().nodes.front(); F; F = F->next()) {
-			nodes.push_back(F->key());
-			nodes.push_back(F->get().pos);
-			nodes.push_back(F->get().node);
-		}
-
-		func["nodes"] = nodes;
-
-		Array sequence_connections;
-
-		for (const Set<SequenceConnection>::Element *F = E->get().sequence_connections.front(); F; F = F->next()) {
-			sequence_connections.push_back(F->get().from_node);
-			sequence_connections.push_back(F->get().from_output);
-			sequence_connections.push_back(F->get().to_node);
-		}
-
-		func["sequence_connections"] = sequence_connections;
-
-		Array data_connections;
+		func["name"] = E->get();
+		func["function_id"] = functions[E->get()].func_id;
+		funcs.push_back(func);
+	}
+	d["functions"] = funcs;
 
-		for (const Set<DataConnection>::Element *F = E->get().data_connections.front(); F; F = F->next()) {
-			data_connections.push_back(F->get().from_node);
-			data_connections.push_back(F->get().from_port);
-			data_connections.push_back(F->get().to_node);
-			data_connections.push_back(F->get().to_port);
-		}
+	Array nds;
+	List<int> node_ids;
+	nodes.get_key_list(&node_ids);
+	for (const List<int>::Element *F = node_ids.front(); F; F = F->next()) {
+		nds.push_back(F->get());
+		nds.push_back(nodes[F->get()].pos);
+		nds.push_back(nodes[F->get()].node);
+	}
+	d["nodes"] = nds;
 
-		func["data_connections"] = data_connections;
+	Array seqconns;
+	for (const Set<SequenceConnection>::Element *F = sequence_connections.front(); F; F = F->next()) {
+		seqconns.push_back(F->get().from_node);
+		seqconns.push_back(F->get().from_output);
+		seqconns.push_back(F->get().to_node);
+	}
+	d["sequence_connections"] = seqconns;
 
-		funcs.push_back(func);
+	Array dataconns;
+	for (const Set<DataConnection>::Element *F = data_connections.front(); F; F = F->next()) {
+		dataconns.push_back(F->get().from_node);
+		dataconns.push_back(F->get().from_port);
+		dataconns.push_back(F->get().to_node);
+		dataconns.push_back(F->get().to_port);
 	}
+	d["data_connections"] = dataconns;
 
-	d["functions"] = funcs;
 	d["is_tool_script"] = is_tool_script;
-	d["vs_unify"] = true;
+	d["scroll"] = scroll;
 
 	return d;
 }
@@ -1317,25 +1171,25 @@ void VisualScript::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("has_function", "name"), &VisualScript::has_function);
 	ClassDB::bind_method(D_METHOD("remove_function", "name"), &VisualScript::remove_function);
 	ClassDB::bind_method(D_METHOD("rename_function", "name", "new_name"), &VisualScript::rename_function);
-	ClassDB::bind_method(D_METHOD("set_function_scroll", "name", "ofs"), &VisualScript::set_function_scroll);
-	ClassDB::bind_method(D_METHOD("get_function_scroll", "name"), &VisualScript::get_function_scroll);
+	ClassDB::bind_method(D_METHOD("set_scroll", "ofs"), &VisualScript::set_scroll);
+	ClassDB::bind_method(D_METHOD("get_scroll"), &VisualScript::get_scroll);
 
-	ClassDB::bind_method(D_METHOD("add_node", "func", "id", "node", "position"), &VisualScript::add_node, DEFVAL(Point2()));
-	ClassDB::bind_method(D_METHOD("remove_node", "func", "id"), &VisualScript::remove_node);
+	ClassDB::bind_method(D_METHOD("add_node", "id", "node", "position"), &VisualScript::add_node, DEFVAL(Point2()));
+	ClassDB::bind_method(D_METHOD("remove_node", "id"), &VisualScript::remove_node);
 	ClassDB::bind_method(D_METHOD("get_function_node_id", "name"), &VisualScript::get_function_node_id);
 
-	ClassDB::bind_method(D_METHOD("get_node", "func", "id"), &VisualScript::get_node);
-	ClassDB::bind_method(D_METHOD("has_node", "func", "id"), &VisualScript::has_node);
-	ClassDB::bind_method(D_METHOD("set_node_position", "func", "id", "position"), &VisualScript::set_node_position);
-	ClassDB::bind_method(D_METHOD("get_node_position", "func", "id"), &VisualScript::get_node_position);
+	ClassDB::bind_method(D_METHOD("get_node", "id"), &VisualScript::get_node);
+	ClassDB::bind_method(D_METHOD("has_node", "id"), &VisualScript::has_node);
+	ClassDB::bind_method(D_METHOD("set_node_position", "id", "position"), &VisualScript::set_node_position);
+	ClassDB::bind_method(D_METHOD("get_node_position", "id"), &VisualScript::get_node_position);
 
-	ClassDB::bind_method(D_METHOD("sequence_connect", "func", "from_node", "from_output", "to_node"), &VisualScript::sequence_connect);
-	ClassDB::bind_method(D_METHOD("sequence_disconnect", "func", "from_node", "from_output", "to_node"), &VisualScript::sequence_disconnect);
-	ClassDB::bind_method(D_METHOD("has_sequence_connection", "func", "from_node", "from_output", "to_node"), &VisualScript::has_sequence_connection);
+	ClassDB::bind_method(D_METHOD("sequence_connect", "from_node", "from_output", "to_node"), &VisualScript::sequence_connect);
+	ClassDB::bind_method(D_METHOD("sequence_disconnect", "from_node", "from_output", "to_node"), &VisualScript::sequence_disconnect);
+	ClassDB::bind_method(D_METHOD("has_sequence_connection", "from_node", "from_output", "to_node"), &VisualScript::has_sequence_connection);
 
-	ClassDB::bind_method(D_METHOD("data_connect", "func", "from_node", "from_port", "to_node", "to_port"), &VisualScript::data_connect);
-	ClassDB::bind_method(D_METHOD("data_disconnect", "func", "from_node", "from_port", "to_node", "to_port"), &VisualScript::data_disconnect);
-	ClassDB::bind_method(D_METHOD("has_data_connection", "func", "from_node", "from_port", "to_node", "to_port"), &VisualScript::has_data_connection);
+	ClassDB::bind_method(D_METHOD("data_connect", "from_node", "from_port", "to_node", "to_port"), &VisualScript::data_connect);
+	ClassDB::bind_method(D_METHOD("data_disconnect", "from_node", "from_port", "to_node", "to_port"), &VisualScript::data_disconnect);
+	ClassDB::bind_method(D_METHOD("has_data_connection", "from_node", "from_port", "to_node", "to_port"), &VisualScript::has_data_connection);
 
 	ClassDB::bind_method(D_METHOD("add_variable", "name", "default_value", "export"), &VisualScript::add_variable, DEFVAL(Variant()), DEFVAL(false));
 	ClassDB::bind_method(D_METHOD("has_variable", "name"), &VisualScript::has_variable);
@@ -1371,7 +1225,7 @@ void VisualScript::_bind_methods() {
 
 	ADD_PROPERTY(PropertyInfo(Variant::DICTIONARY, "data", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR | PROPERTY_USAGE_INTERNAL), "_set_data", "_get_data");
 
-	ADD_SIGNAL(MethodInfo("node_ports_changed", PropertyInfo(Variant::STRING, "function"), PropertyInfo(Variant::INT, "id")));
+	ADD_SIGNAL(MethodInfo("node_ports_changed", PropertyInfo(Variant::INT, "id")));
 }
 
 VisualScript::VisualScript() {
@@ -1380,16 +1234,12 @@ VisualScript::VisualScript() {
 }
 
 bool VisualScript::inherits_script(const Ref<Script> &p_script) const {
-	return this == p_script.ptr(); //there is no inheritance in visual scripts, so this is enough
-}
-
-StringName VisualScript::get_default_func() const {
-	return StringName("f_312843592");
+	return this == p_script.ptr(); // There is no inheritance in visual scripts, so this is enough.
 }
 
-Set<int> VisualScript::get_output_sequence_ports_connected(const String &edited_func, int from_node) {
+Set<int> VisualScript::get_output_sequence_ports_connected(int from_node) {
 	List<VisualScript::SequenceConnection> *sc = memnew(List<VisualScript::SequenceConnection>);
-	get_sequence_connection_list(edited_func, sc);
+	get_sequence_connection_list(sc);
 	Set<int> connected;
 	for (List<VisualScript::SequenceConnection>::Element *E = sc->front(); E; E = E->next()) {
 		if (E->get().from_node == from_node) {
@@ -1401,8 +1251,11 @@ Set<int> VisualScript::get_output_sequence_ports_connected(const String &edited_
 }
 
 VisualScript::~VisualScript() {
-	while (!functions.is_empty()) {
-		remove_function(functions.front()->key());
+	// Remove all nodes and stuff that hold data refs.
+	List<int> nds;
+	nodes.get_key_list(&nds);
+	for (const List<int>::Element *E = nds.front(); E; E = E->next()) {
+		remove_node(E->get());
 	}
 }
 
@@ -1430,20 +1283,21 @@ bool VisualScriptInstance::get(const StringName &p_name, Variant &r_ret) const {
 }
 
 void VisualScriptInstance::get_property_list(List<PropertyInfo> *p_properties) const {
-	for (const Map<StringName, VisualScript::Variable>::Element *E = script->variables.front(); E; E = E->next()) {
-		if (!E->get()._export) {
+	List<StringName> vars;
+	script->variables.get_key_list(&vars);
+	for (const List<StringName>::Element *E = vars.front(); E; E = E->next()) {
+		if (!script->variables[E->get()]._export) {
 			continue;
 		}
-		PropertyInfo p = E->get().info;
-		p.name = String(E->key());
+		PropertyInfo p = script->variables[E->get()].info;
+		p.name = String(E->get());
 		p.usage |= PROPERTY_USAGE_SCRIPT_VARIABLE;
 		p_properties->push_back(p);
 	}
 }
 
 Variant::Type VisualScriptInstance::get_property_type(const StringName &p_name, bool *r_is_valid) const {
-	const Map<StringName, VisualScript::Variable>::Element *E = script->variables.find(p_name);
-	if (!E) {
+	if (!script->variables.has(p_name)) {
 		if (r_is_valid) {
 			*r_is_valid = false;
 		}
@@ -1454,19 +1308,17 @@ Variant::Type VisualScriptInstance::get_property_type(const StringName &p_name,
 		*r_is_valid = true;
 	}
 
-	return E->get().info.type;
+	return script->variables[p_name].info.type;
 }
 
 void VisualScriptInstance::get_method_list(List<MethodInfo> *p_list) const {
-	for (const Map<StringName, VisualScript::Function>::Element *E = script->functions.front(); E; E = E->next()) {
-		if (E->key() == script->get_default_func()) {
-			continue;
-		}
-
+	List<StringName> fns;
+	script->functions.get_key_list(&fns);
+	for (const List<StringName>::Element *E = fns.front(); E; E = E->next()) {
 		MethodInfo mi;
-		mi.name = E->key();
-		if (E->get().function_id >= 0 && E->get().nodes.has(E->get().function_id)) {
-			Ref<VisualScriptFunction> vsf = E->get().nodes[E->get().function_id].node;
+		mi.name = E->get();
+		if (script->functions[E->get()].func_id >= 0 && script->nodes.has(script->functions[E->get()].func_id)) {
+			Ref<VisualScriptFunction> vsf = script->nodes[script->functions[E->get()].func_id].node;
 			if (vsf.is_valid()) {
 				for (int i = 0; i < vsf->get_argument_count(); i++) {
 					PropertyInfo arg;
@@ -1476,21 +1328,16 @@ void VisualScriptInstance::get_method_list(List<MethodInfo> *p_list) const {
 					mi.arguments.push_back(arg);
 				}
 
-				if (!vsf->is_sequenced()) { //assumed constant if not sequenced
+				if (!vsf->is_sequenced()) { // Assumed constant if not sequenced.
 					mi.flags |= METHOD_FLAG_CONST;
 				}
 			}
 		}
-
 		p_list->push_back(mi);
 	}
 }
 
 bool VisualScriptInstance::has_method(const StringName &p_method) const {
-	if (p_method == script->get_default_func()) {
-		return false;
-	}
-
 	return script->functions.has(p_method);
 }
 
@@ -1522,10 +1369,10 @@ void VisualScriptInstance::_dependency_step(VisualScriptNodeInstance *node, int
 		int index = node->input_ports[i] & VisualScriptNodeInstance::INPUT_MASK;
 
 		if (node->input_ports[i] & VisualScriptNodeInstance::INPUT_DEFAULT_VALUE_BIT) {
-			//is a default value (unassigned input port)
+			// Is a default value (unassigned input port).
 			input_args[i] = &default_values[index];
 		} else {
-			//regular temporary in stack
+			// Rregular temporary in stack.
 			input_args[i] = &variant_stack[index];
 		}
 	}
@@ -1536,7 +1383,7 @@ void VisualScriptInstance::_dependency_step(VisualScriptNodeInstance *node, int
 	Variant *working_mem = node->working_mem_idx >= 0 ? &variant_stack[node->working_mem_idx] : (Variant *)nullptr;
 
 	node->step(input_args, output_args, VisualScriptNodeInstance::START_MODE_BEGIN_SEQUENCE, working_mem, r_error, error_str);
-	//ignore return
+	// Ignore return.
 	if (r_error.error != Callable::CallError::CALL_OK) {
 		*r_error_node = node;
 	}
@@ -1547,7 +1394,7 @@ Variant VisualScriptInstance::_call_internal(const StringName &p_method, void *p
 	ERR_FAIL_COND_V(!F, Variant());
 	Function *f = &F->get();
 
-	//this call goes separate, so it can e yielded and suspended
+	// This call goes separate, so it can e yielded and suspended.
 	Variant *variant_stack = (Variant *)p_stack;
 	bool *sequence_bits = (bool *)(variant_stack + f->max_stack);
 	const Variant **input_args = (const Variant **)(sequence_bits + f->node_count);
@@ -1573,25 +1420,25 @@ Variant VisualScriptInstance::_call_internal(const StringName &p_method, void *p
 #endif
 
 	while (true) {
-		p_pass++; //increment pass
+		p_pass++; // Increment pass.
 		current_node_id = node->get_id();
 
 		VSDEBUG("==========AT NODE: " + itos(current_node_id) + " base: " + node->get_base_node()->get_class_name());
 		VSDEBUG("AT STACK POS: " + itos(flow_stack_pos));
 
-		//setup working mem
+		// Setup working mem.
 		working_mem = node->working_mem_idx >= 0 ? &variant_stack[node->working_mem_idx] : (Variant *)nullptr;
 
 		VSDEBUG("WORKING MEM: " + itos(node->working_mem_idx));
 
 		if (current_node_id == f->node) {
-			//if function node, set up function arguments from beginning of stack
+			// If function node, set up function arguments from beginning of stack.
 
 			for (int i = 0; i < f->argument_count; i++) {
 				input_args[i] = &variant_stack[i];
 			}
 		} else {
-			//run dependencies first
+			// Run dependencies first.
 
 			if (!node->dependencies.is_empty()) {
 				int dc = node->dependencies.size();
@@ -1608,18 +1455,18 @@ Variant VisualScriptInstance::_call_internal(const StringName &p_method, void *p
 			}
 
 			if (!error) {
-				//setup input pointers normally
+				// Setup input pointers normally.
 				VSDEBUG("INPUT PORTS: " + itos(node->input_port_count));
 
 				for (int i = 0; i < node->input_port_count; i++) {
 					int index = node->input_ports[i] & VisualScriptNodeInstance::INPUT_MASK;
 
 					if (node->input_ports[i] & VisualScriptNodeInstance::INPUT_DEFAULT_VALUE_BIT) {
-						//is a default value (unassigned input port)
+						// Is a default value (unassigned input port).
 						input_args[i] = &default_values[index];
 						VSDEBUG("\tPORT " + itos(i) + " DEFAULT VAL");
 					} else {
-						//regular temporary in stack
+						// Regular temporary in stack.
 						input_args[i] = &variant_stack[index];
 						VSDEBUG("PORT " + itos(i) + " AT STACK " + itos(index));
 					}
@@ -1631,7 +1478,7 @@ Variant VisualScriptInstance::_call_internal(const StringName &p_method, void *p
 			break;
 		}
 
-		//setup output pointers
+		// Setup output pointers.
 
 		VSDEBUG("OUTPUT PORTS: " + itos(node->output_port_count));
 		for (int i = 0; i < node->output_port_count; i++) {
@@ -1639,15 +1486,15 @@ Variant VisualScriptInstance::_call_internal(const StringName &p_method, void *p
 			VSDEBUG("PORT " + itos(i) + " AT STACK " + itos(node->output_ports[i]));
 		}
 
-		//do step
+		// Do step.
 
 		VisualScriptNodeInstance::StartMode start_mode;
 		{
 			if (p_resuming_yield) {
 				start_mode = VisualScriptNodeInstance::START_MODE_RESUME_YIELD;
-				p_resuming_yield = false; // should resume only the first time
+				p_resuming_yield = false; // Should resume only the first time.
 			} else if (flow_stack && (flow_stack[flow_stack_pos] & VisualScriptNodeInstance::FLOW_STACK_PUSHED_BIT)) {
-				//if there is a push bit, it means we are continuing a sequence
+				// If there is a push bit, it means we are continuing a sequence.
 				start_mode = VisualScriptNodeInstance::START_MODE_CONTINUE_SEQUENCE;
 			} else {
 				start_mode = VisualScriptNodeInstance::START_MODE_BEGIN_SEQUENCE;
@@ -1659,13 +1506,13 @@ Variant VisualScriptInstance::_call_internal(const StringName &p_method, void *p
 		int ret = node->step(input_args, output_args, start_mode, working_mem, r_error, error_str);
 
 		if (r_error.error != Callable::CallError::CALL_OK) {
-			//use error from step
+			// Use error from step.
 			error = true;
 			break;
 		}
 
 		if (ret & VisualScriptNodeInstance::STEP_YIELD_BIT) {
-			//yielded!
+			// Yielded!
 			if (node->get_working_memory_size() == 0) {
 				r_error.error = Callable::CallError::CALL_ERROR_INVALID_METHOD;
 				error_str = RTR("A node yielded without working memory, please read the docs on how to yield properly!");
@@ -1681,7 +1528,7 @@ Variant VisualScriptInstance::_call_internal(const StringName &p_method, void *p
 					break;
 				}
 
-				//step 1, capture all state
+				// Step 1, capture all state.
 				state->instance_id = get_owner_ptr()->get_instance_id();
 				state->script_id = get_script()->get_instance_id();
 				state->instance = this;
@@ -1693,11 +1540,11 @@ Variant VisualScriptInstance::_call_internal(const StringName &p_method, void *p
 				state->stack.resize(p_stack_size);
 				state->pass = p_pass;
 				copymem(state->stack.ptrw(), p_stack, p_stack_size);
-				//step 2, run away, return directly
+				// Step 2, run away, return directly.
 				r_error.error = Callable::CallError::CALL_OK;
 
 #ifdef DEBUG_ENABLED
-				//will re-enter later, so exiting
+				// Will re-enter later, so exiting.
 				if (EngineDebugger::is_active()) {
 					VisualScriptLanguage::singleton->exit_function();
 				}
@@ -1742,18 +1589,18 @@ Variant VisualScriptInstance::_call_internal(const StringName &p_method, void *p
 				error_str = RTR("Return value must be assigned to first element of node working memory! Fix your node please.");
 				error = true;
 			} else {
-				//assign from working memory, first element
+				// Assign from working memory, first element.
 				return_value = *working_mem;
 			}
 
 			VSDEBUG("EXITING FUNCTION - VALUE " + String(return_value));
-			break; //exit function requested, bye
+			break; // Exit function requested, bye
 		}
 
-		VisualScriptNodeInstance *next = nullptr; //next node
+		VisualScriptNodeInstance *next = nullptr; // Next node.
 
 		if ((ret == output || ret & VisualScriptNodeInstance::STEP_FLAG_PUSH_STACK_BIT) && node->sequence_output_count) {
-			//if no exit bit was set, and has sequence outputs, guess next node
+			// If no exit bit was set, and has sequence outputs, guess next node.
 			if (output >= node->sequence_output_count) {
 				r_error.error = Callable::CallError::CALL_ERROR_INVALID_METHOD;
 				error_str = RTR("Node returned an invalid sequence output: ") + itos(output);
@@ -1766,21 +1613,21 @@ Variant VisualScriptInstance::_call_internal(const StringName &p_method, void *p
 		}
 
 		if (flow_stack) {
-			//update flow stack pos (may have changed)
+			// Update flow stack pos (may have changed).
 			flow_stack[flow_stack_pos] = current_node_id;
 
-			//add stack push bit if requested
+			// Add stack push bit if requested.
 			if (ret & VisualScriptNodeInstance::STEP_FLAG_PUSH_STACK_BIT) {
 				flow_stack[flow_stack_pos] |= VisualScriptNodeInstance::FLOW_STACK_PUSHED_BIT;
-				sequence_bits[node->sequence_index] = true; //remember sequence bit
+				sequence_bits[node->sequence_index] = true; // Remember sequence bit.
 				VSDEBUG("NEXT SEQ - FLAG BIT");
 			} else {
-				sequence_bits[node->sequence_index] = false; //forget sequence bit
+				sequence_bits[node->sequence_index] = false; // Forget sequence bit.
 				VSDEBUG("NEXT SEQ - NORMAL");
 			}
 
 			if (ret & VisualScriptNodeInstance::STEP_FLAG_GO_BACK_BIT) {
-				//go back request
+				// Go back request.
 
 				if (flow_stack_pos > 0) {
 					flow_stack_pos--;
@@ -1788,20 +1635,20 @@ Variant VisualScriptInstance::_call_internal(const StringName &p_method, void *p
 					VSDEBUG("NEXT IS GO BACK");
 				} else {
 					VSDEBUG("NEXT IS GO BACK, BUT NO NEXT SO EXIT");
-					break; //simply exit without value or error
+					break; // Simply exit without value or error.
 				}
 			} else if (next) {
 				if (sequence_bits[next->sequence_index]) {
-					// what happened here is that we are entering a node that is in the middle of doing a sequence (pushed stack) from the front
+					// What happened here is that we are entering a node that is in the middle of doing a sequence (pushed stack) from the front
 					// because each node has a working memory, we can't really do a sub-sequence
 					// as a result, the sequence will be restarted and the stack will roll back to find where this node
-					// started the sequence
+					// started the sequence.
 
 					bool found = false;
 
 					for (int i = flow_stack_pos; i >= 0; i--) {
 						if ((flow_stack[i] & VisualScriptNodeInstance::FLOW_STACK_MASK) == next->get_id()) {
-							flow_stack_pos = i; //roll back and remove bit
+							flow_stack_pos = i; // Roll back and remove bit.
 							flow_stack[i] = next->get_id();
 							sequence_bits[next->sequence_index] = false;
 							found = true;
@@ -1819,7 +1666,7 @@ Variant VisualScriptInstance::_call_internal(const StringName &p_method, void *p
 					VSDEBUG("RE-ENTERED A LOOP, RETURNED STACK POS TO - " + itos(flow_stack_pos));
 
 				} else {
-					// check for stack overflow
+					// Check for stack overflow.
 					if (flow_stack_pos + 1 >= flow_max) {
 						r_error.error = Callable::CallError::CALL_ERROR_INVALID_METHOD;
 						error_str = RTR("Stack overflow with stack depth: ") + itos(output);
@@ -1836,7 +1683,7 @@ Variant VisualScriptInstance::_call_internal(const StringName &p_method, void *p
 				}
 
 			} else {
-				//no next node, try to go back in stack to pushed bit
+				// No next node, try to go back in stack to pushed bit.
 
 				bool found = false;
 
@@ -1852,22 +1699,22 @@ Variant VisualScriptInstance::_call_internal(const StringName &p_method, void *p
 
 				if (!found) {
 					VSDEBUG("NO NEXT NODE, NO GO BACK, EXITING");
-					break; //done, couldn't find a push stack bit
+					break; // Done, couldn't find a push stack bit.
 				}
 
 				VSDEBUG("NO NEXT NODE, GO BACK TO: " + itos(flow_stack_pos));
 			}
 		} else {
-			node = next; //stackless mode, simply assign next node
+			node = next; // Stackless mode, simply assign next node.
 		}
 	}
 
 	if (error) {
-		//error
-		// function, file, line, error, explanation
+		// Error
+		// Function, file, line, error, explanation.
 		String err_file = script->get_path();
 		String err_func = p_method;
-		int err_line = current_node_id; //not a line but it works as one
+		int err_line = current_node_id; // Not a line but it works as one.
 
 		if (node && (r_error.error != Callable::CallError::CALL_ERROR_INVALID_METHOD || error_str == String())) {
 			if (error_str != String()) {
@@ -1906,7 +1753,7 @@ Variant VisualScriptInstance::_call_internal(const StringName &p_method, void *p
 	}
 #endif
 
-	//clean up variant stack
+	// Clean up variant stack.
 	for (int i = 0; i < f->max_stack; i++) {
 		variant_stack[i].~Variant();
 	}
@@ -1954,7 +1801,7 @@ Variant VisualScriptInstance::call(const StringName &p_method, const Variant **p
 	int *pass_stack = flow_stack ? (int *)(flow_stack + flow_max) : (int *)nullptr;
 
 	for (int i = 0; i < f->node_count; i++) {
-		sequence_bits[i] = false; //all starts as false
+		sequence_bits[i] = false; // All starts as false.
 	}
 
 	zeromem(pass_stack, f->pass_stack_size * sizeof(int));
@@ -1988,12 +1835,12 @@ Variant VisualScriptInstance::call(const StringName &p_method, const Variant **p
 		return Variant();
 	}
 
-	//allocate variant stack
+	// Allocate variant stack.
 	for (int i = 0; i < f->max_stack; i++) {
 		memnew_placement(&variant_stack[i], Variant);
 	}
 
-	//allocate function arguments (must be copied for yield to work properly)
+	// Allocate function arguments (must be copied for yield to work properly).
 	for (int i = 0; i < p_argcount; i++) {
 		variant_stack[i] = *p_args[i];
 	}
@@ -2002,12 +1849,12 @@ Variant VisualScriptInstance::call(const StringName &p_method, const Variant **p
 }
 
 void VisualScriptInstance::notification(int p_notification) {
-	//do nothing as this is called using virtual
+	// Do nothing as this is called using virtual.
 
 	Variant what = p_notification;
 	const Variant *whatp = &what;
 	Callable::CallError ce;
-	call(VisualScriptLanguage::singleton->notification, &whatp, 1, ce); //do as call
+	call(VisualScriptLanguage::singleton->notification, &whatp, 1, ce); // Do as call.
 }
 
 String VisualScriptInstance::to_string(bool *r_valid) {
@@ -2086,7 +1933,7 @@ void VisualScriptInstance::create(const Ref<VisualScript> &p_script, Object *p_o
 	max_output_args = 0;
 
 	if (Object::cast_to<Node>(p_owner)) {
-		//turn on these if they exist and base is a node
+		// Turn on these if they exist and base is a node.
 		Node *node = Object::cast_to<Node>(p_owner);
 		if (p_script->functions.has("_process")) {
 			node->set_process(true);
@@ -2105,190 +1952,236 @@ void VisualScriptInstance::create(const Ref<VisualScript> &p_script, Object *p_o
 		}
 	}
 
-	for (const Map<StringName, VisualScript::Variable>::Element *E = script->variables.front(); E; E = E->next()) {
-		variables[E->key()] = E->get().default_value;
-	}
-
-	for (const Map<StringName, VisualScript::Function>::Element *E = script->functions.front(); E; E = E->next()) {
-		if (E->key() == script->get_default_func()) {
-			continue;
-		}
-
-		Function function;
-		function.node = E->get().function_id;
-		function.max_stack = 0;
-		function.flow_stack_size = 0;
-		function.pass_stack_size = 0;
-		function.node_count = 0;
-
-		Map<StringName, int> local_var_indices;
-
-		if (function.node < 0) {
-			VisualScriptLanguage::singleton->debug_break_parse(get_script()->get_path(), 0, "No start node in function: " + String(E->key()));
-
-			ERR_CONTINUE(function.node < 0);
+	// Setup variables.
+	{
+		List<StringName> keys;
+		script->variables.get_key_list(&keys);
+		for (const List<StringName>::Element *E = keys.front(); E; E = E->next()) {
+			variables[E->get()] = script->variables[E->get()].default_value;
 		}
+	}
 
-		{
-			Ref<VisualScriptFunction> func_node = script->get_node(E->key(), E->get().function_id);
-
-			if (func_node.is_null()) {
-				VisualScriptLanguage::singleton->debug_break_parse(get_script()->get_path(), 0, "No VisualScriptFunction typed start node in function: " + String(E->key()));
+	// Setup functions from sequence trees.
+	{
+		List<StringName> keys;
+		script->functions.get_key_list(&keys);
+		for (const List<StringName>::Element *E = keys.front(); E; E = E->next()) {
+			const VisualScript::Function vsfn = p_script->functions[E->get()];
+			Function function;
+			function.node = vsfn.func_id;
+			function.max_stack = 0;
+			function.flow_stack_size = 0;
+			function.pass_stack_size = 0;
+			function.node_count = 0;
+
+			Map<StringName, int> local_var_indices;
+
+			if (function.node < 0) {
+				VisualScriptLanguage::singleton->debug_break_parse(get_script()->get_path(), 0, "No start node in function: " + String(E->get()));
+				ERR_CONTINUE(function.node < 0);
 			}
 
-			ERR_CONTINUE(!func_node.is_valid());
-
-			function.argument_count = func_node->get_argument_count();
-			function.max_stack += function.argument_count;
-			function.flow_stack_size = func_node->is_stack_less() ? 0 : func_node->get_stack_size();
-			max_input_args = MAX(max_input_args, function.argument_count);
-		}
-
-		//multiple passes are required to set up this complex thing..
-
-		//first create the nodes
-		for (const Map<int, VisualScript::Function::NodeData>::Element *F = E->get().nodes.front(); F; F = F->next()) {
-			Ref<VisualScriptNode> node = F->get().node;
-
-			VisualScriptNodeInstance *instance = node->instance(this); //create instance
-			ERR_FAIL_COND(!instance);
+			{
+				Ref<VisualScriptFunction> func_node = script->get_node(vsfn.func_id);
 
-			instance->base = node.ptr();
+				if (func_node.is_null()) {
+					VisualScriptLanguage::singleton->debug_break_parse(get_script()->get_path(), 0, "No VisualScriptFunction typed start node in function: " + String(E->get()));
+				}
 
-			instance->id = F->key();
-			instance->input_port_count = node->get_input_value_port_count();
-			instance->input_ports = nullptr;
-			instance->output_port_count = node->get_output_value_port_count();
-			instance->output_ports = nullptr;
-			instance->sequence_output_count = node->get_output_sequence_port_count();
-			instance->sequence_index = function.node_count++;
-			instance->sequence_outputs = nullptr;
-			instance->pass_idx = -1;
+				ERR_CONTINUE(!func_node.is_valid());
 
-			if (instance->input_port_count) {
-				instance->input_ports = memnew_arr(int, instance->input_port_count);
-				for (int i = 0; i < instance->input_port_count; i++) {
-					instance->input_ports[i] = -1; //if not assigned, will become default value
-				}
+				function.argument_count = func_node->get_argument_count();
+				function.max_stack += function.argument_count;
+				function.flow_stack_size = func_node->is_stack_less() ? 0 : func_node->get_stack_size();
+				max_input_args = MAX(max_input_args, function.argument_count);
 			}
-
-			if (instance->output_port_count) {
-				instance->output_ports = memnew_arr(int, instance->output_port_count);
-				for (int i = 0; i < instance->output_port_count; i++) {
-					instance->output_ports[i] = -1; //if not assigned, will output to trash
+			// Function nodes graphs.
+			Set<VisualScript::SequenceConnection> seqconns;
+			Set<VisualScript::DataConnection> dataconns;
+			Set<int> node_ids;
+			node_ids.insert(function.node);
+			{
+				List<int> nd_queue;
+				nd_queue.push_back(function.node);
+				while (!nd_queue.is_empty()) {
+					for (const Set<VisualScript::SequenceConnection>::Element *F = script->sequence_connections.front(); F; F = F->next()) {
+						if (nd_queue.front()->get() == F->get().from_node && !node_ids.has(F->get().to_node)) {
+							nd_queue.push_back(F->get().to_node);
+							node_ids.insert(F->get().to_node);
+						}
+						if (nd_queue.front()->get() == F->get().from_node && !seqconns.has(F->get())) {
+							seqconns.insert(F->get());
+						}
+					}
+					nd_queue.pop_front();
 				}
-			}
-
-			if (instance->sequence_output_count) {
-				instance->sequence_outputs = memnew_arr(VisualScriptNodeInstance *, instance->sequence_output_count);
-				for (int i = 0; i < instance->sequence_output_count; i++) {
-					instance->sequence_outputs[i] = nullptr; //if it remains null, flow ends here
+				HashMap<int, HashMap<int, Pair<int, int>>> dc_lut; // :: to -> to_port -> (from, from_port)
+				for (const Set<VisualScript::DataConnection>::Element *F = script->data_connections.front(); F; F = F->next()) {
+					dc_lut[F->get().to_node][F->get().to_port] = Pair<int, int>(F->get().from_node, F->get().from_port);
+				}
+				for (const Set<int>::Element *F = node_ids.front(); F; F = F->next()) {
+					nd_queue.push_back(F->get());
+				}
+				List<int> dc_keys;
+				while (!nd_queue.is_empty()) {
+					int ky = nd_queue.front()->get();
+					dc_lut[ky].get_key_list(&dc_keys);
+					for (const List<int>::Element *F = dc_keys.front(); F; F = F->next()) {
+						VisualScript::DataConnection dc;
+						dc.from_node = dc_lut[ky][F->get()].first;
+						dc.from_port = dc_lut[ky][F->get()].second;
+						dc.to_node = ky;
+						dc.to_port = F->get();
+						dataconns.insert(dc);
+						nd_queue.push_back(dc.from_node);
+						node_ids.insert(dc.from_node);
+					}
+					dc_keys.clear(); // Necessary as get_key_list does a push_back not a set.
+					nd_queue.pop_front();
 				}
 			}
 
-			if (Object::cast_to<VisualScriptLocalVar>(node.ptr()) || Object::cast_to<VisualScriptLocalVarSet>(*node)) {
-				//working memory is shared only for this node, for the same variables
-				Ref<VisualScriptLocalVar> vslv = node;
-
-				StringName var_name;
+			//Multiple passes are required to set up this complex thing..
+			//First create the nodes.
+			for (const Set<int>::Element *F = node_ids.front(); F; F = F->next()) {
+				Ref<VisualScriptNode> node = script->nodes[F->get()].node;
+
+				VisualScriptNodeInstance *instance = node->instance(this); // Create instance.
+				ERR_FAIL_COND(!instance);
+
+				instance->base = node.ptr();
+
+				instance->id = F->get();
+				instance->input_port_count = node->get_input_value_port_count();
+				instance->input_ports = NULL;
+				instance->output_port_count = node->get_output_value_port_count();
+				instance->output_ports = NULL;
+				instance->sequence_output_count = node->get_output_sequence_port_count();
+				instance->sequence_index = function.node_count++;
+				instance->sequence_outputs = NULL;
+				instance->pass_idx = -1;
+
+				if (instance->input_port_count) {
+					instance->input_ports = memnew_arr(int, instance->input_port_count);
+					for (int i = 0; i < instance->input_port_count; i++) {
+						instance->input_ports[i] = -1; // If not assigned, will become default value.
+					}
+				}
 
-				if (Object::cast_to<VisualScriptLocalVar>(*node)) {
-					var_name = String(Object::cast_to<VisualScriptLocalVar>(*node)->get_var_name()).strip_edges();
-				} else {
-					var_name = String(Object::cast_to<VisualScriptLocalVarSet>(*node)->get_var_name()).strip_edges();
+				if (instance->output_port_count) {
+					instance->output_ports = memnew_arr(int, instance->output_port_count);
+					for (int i = 0; i < instance->output_port_count; i++) {
+						instance->output_ports[i] = -1; // If not assigned, will output to trash.
+					}
 				}
 
-				if (!local_var_indices.has(var_name)) {
-					local_var_indices[var_name] = function.max_stack;
-					function.max_stack++;
+				if (instance->sequence_output_count) {
+					instance->sequence_outputs = memnew_arr(VisualScriptNodeInstance *, instance->sequence_output_count);
+					for (int i = 0; i < instance->sequence_output_count; i++) {
+						instance->sequence_outputs[i] = NULL; // If it remains null, flow ends here.
+					}
 				}
 
-				instance->working_mem_idx = local_var_indices[var_name];
+				if (Object::cast_to<VisualScriptLocalVar>(node.ptr()) || Object::cast_to<VisualScriptLocalVarSet>(*node)) {
+					// Working memory is shared only for this node, for the same variables.
+					Ref<VisualScriptLocalVar> vslv = node;
 
-			} else if (instance->get_working_memory_size()) {
-				instance->working_mem_idx = function.max_stack;
-				function.max_stack += instance->get_working_memory_size();
-			} else {
-				instance->working_mem_idx = -1; //no working mem
-			}
+					StringName var_name;
 
-			max_input_args = MAX(max_input_args, instance->input_port_count);
-			max_output_args = MAX(max_output_args, instance->output_port_count);
+					if (Object::cast_to<VisualScriptLocalVar>(*node))
+						var_name = String(Object::cast_to<VisualScriptLocalVar>(*node)->get_var_name()).strip_edges();
+					else
+						var_name = String(Object::cast_to<VisualScriptLocalVarSet>(*node)->get_var_name()).strip_edges();
 
-			instances[F->key()] = instance;
-		}
+					if (!local_var_indices.has(var_name)) {
+						local_var_indices[var_name] = function.max_stack;
+						function.max_stack++;
+					}
 
-		function.trash_pos = function.max_stack++; //create pos for trash
+					instance->working_mem_idx = local_var_indices[var_name];
 
-		//second pass, do data connections
+				} else if (instance->get_working_memory_size()) {
+					instance->working_mem_idx = function.max_stack;
+					function.max_stack += instance->get_working_memory_size();
+				} else {
+					instance->working_mem_idx = -1; //no working mem
+				}
 
-		for (const Set<VisualScript::DataConnection>::Element *F = E->get().data_connections.front(); F; F = F->next()) {
-			VisualScript::DataConnection dc = F->get();
-			ERR_CONTINUE(!instances.has(dc.from_node));
-			VisualScriptNodeInstance *from = instances[dc.from_node];
-			ERR_CONTINUE(!instances.has(dc.to_node));
-			VisualScriptNodeInstance *to = instances[dc.to_node];
-			ERR_CONTINUE(dc.from_port >= from->output_port_count);
-			ERR_CONTINUE(dc.to_port >= to->input_port_count);
+				max_input_args = MAX(max_input_args, instance->input_port_count);
+				max_output_args = MAX(max_output_args, instance->output_port_count);
 
-			if (from->output_ports[dc.from_port] == -1) {
-				int stack_pos = function.max_stack++;
-				from->output_ports[dc.from_port] = stack_pos;
+				instances[F->get()] = instance;
 			}
 
-			if (from->get_sequence_output_count() == 0 && to->dependencies.find(from) == -1) {
-				//if the node we are reading from has no output sequence, we must call step() before reading from it.
-				if (from->pass_idx == -1) {
-					from->pass_idx = function.pass_stack_size;
-					function.pass_stack_size++;
+			function.trash_pos = function.max_stack++; // create pos for trash
+
+			// Second pass, do data connections.
+			for (const Set<VisualScript::DataConnection>::Element *F = dataconns.front(); F; F = F->next()) {
+				VisualScript::DataConnection dc = F->get();
+				ERR_CONTINUE(!instances.has(dc.from_node));
+				VisualScriptNodeInstance *from = instances[dc.from_node];
+				ERR_CONTINUE(!instances.has(dc.to_node));
+				VisualScriptNodeInstance *to = instances[dc.to_node];
+				ERR_CONTINUE(dc.from_port >= from->output_port_count);
+				ERR_CONTINUE(dc.to_port >= to->input_port_count);
+
+				if (from->output_ports[dc.from_port] == -1) {
+					int stack_pos = function.max_stack++;
+					from->output_ports[dc.from_port] = stack_pos;
 				}
-				to->dependencies.push_back(from);
-			}
 
-			to->input_ports[dc.to_port] = from->output_ports[dc.from_port]; //read from wherever the stack is
-		}
-
-		//third pass, do sequence connections
+				if (from->get_sequence_output_count() == 0 && to->dependencies.find(from) == -1) {
+					// If the node we are reading from has no output sequence, we must call step() before reading from it.
+					if (from->pass_idx == -1) {
+						from->pass_idx = function.pass_stack_size;
+						function.pass_stack_size++;
+					}
+					to->dependencies.push_back(from);
+				}
 
-		for (const Set<VisualScript::SequenceConnection>::Element *F = E->get().sequence_connections.front(); F; F = F->next()) {
-			VisualScript::SequenceConnection sc = F->get();
-			ERR_CONTINUE(!instances.has(sc.from_node));
-			VisualScriptNodeInstance *from = instances[sc.from_node];
-			ERR_CONTINUE(!instances.has(sc.to_node));
-			VisualScriptNodeInstance *to = instances[sc.to_node];
-			ERR_CONTINUE(sc.from_output >= from->sequence_output_count);
+				to->input_ports[dc.to_port] = from->output_ports[dc.from_port]; // Read from wherever the stack is.
+			}
 
-			from->sequence_outputs[sc.from_output] = to;
-		}
+			// Third pass, do sequence connections.
+			for (const Set<VisualScript::SequenceConnection>::Element *F = seqconns.front(); F; F = F->next()) {
+				VisualScript::SequenceConnection sc = F->get();
+				ERR_CONTINUE(!instances.has(sc.from_node));
+				VisualScriptNodeInstance *from = instances[sc.from_node];
+				ERR_CONTINUE(!instances.has(sc.to_node));
+				VisualScriptNodeInstance *to = instances[sc.to_node];
+				ERR_CONTINUE(sc.from_output >= from->sequence_output_count);
 
-		//fourth pass:
-		// 1) unassigned input ports to default values
-		// 2) connect unassigned output ports to trash
+				from->sequence_outputs[sc.from_output] = to;
+			}
 
-		for (const Map<int, VisualScript::Function::NodeData>::Element *F = E->get().nodes.front(); F; F = F->next()) {
-			ERR_CONTINUE(!instances.has(F->key()));
+			//fourth pass:
+			// 1) unassigned input ports to default values
+			// 2) connect unassigned output ports to trash
+			for (const Set<int>::Element *F = node_ids.front(); F; F = F->next()) {
+				ERR_CONTINUE(!instances.has(F->get()));
 
-			Ref<VisualScriptNode> node = F->get().node;
-			VisualScriptNodeInstance *instance = instances[F->key()];
+				Ref<VisualScriptNode> node = script->nodes[F->get()].node;
+				VisualScriptNodeInstance *instance = instances[F->get()];
 
-			// connect to default values
-			for (int i = 0; i < instance->input_port_count; i++) {
-				if (instance->input_ports[i] == -1) {
-					//unassigned, connect to default val
-					instance->input_ports[i] = default_values.size() | VisualScriptNodeInstance::INPUT_DEFAULT_VALUE_BIT;
-					default_values.push_back(node->get_default_input_value(i));
+				// Connect to default values.
+				for (int i = 0; i < instance->input_port_count; i++) {
+					if (instance->input_ports[i] == -1) {
+						// Unassigned, connect to default val.
+						instance->input_ports[i] = default_values.size() | VisualScriptNodeInstance::INPUT_DEFAULT_VALUE_BIT;
+						default_values.push_back(node->get_default_input_value(i));
+					}
 				}
-			}
 
-			// connect to trash
-			for (int i = 0; i < instance->output_port_count; i++) {
-				if (instance->output_ports[i] == -1) {
-					instance->output_ports[i] = function.trash_pos; //trash is same for all
+				// Connect to trash.
+				for (int i = 0; i < instance->output_port_count; i++) {
+					if (instance->output_ports[i] == -1) {
+						instance->output_ports[i] = function.trash_pos; //trash is same for all
+					}
 				}
 			}
-		}
 
-		functions[E->key()] = function;
+			functions[E->get()] = function;
+		}
 	}
 }
 
@@ -2354,7 +2247,7 @@ Variant VisualScriptFunctionState::_signal_callback(const Variant **p_args, int
 
 	Variant *working_mem = ((Variant *)stack.ptr()) + working_mem_index;
 
-	*working_mem = args; //arguments go to working mem.
+	*working_mem = args; // Arguments go to working mem.
 
 	Variant ret = instance->_call_internal(function, stack.ptrw(), stack.size(), node, flow_stack_pos, pass, true, r_error);
 	function = StringName(); //invalidate
@@ -2388,7 +2281,7 @@ Variant VisualScriptFunctionState::resume(Array p_args) {
 
 	Variant *working_mem = ((Variant *)stack.ptr()) + working_mem_index;
 
-	*working_mem = p_args; //arguments go to working mem.
+	*working_mem = p_args; // Arguments go to working mem.
 
 	Variant ret = instance->_call_internal(function, stack.ptrw(), stack.size(), node, flow_stack_pos, pass, true, r_error);
 	function = StringName(); //invalidate
@@ -2498,7 +2391,7 @@ void VisualScriptLanguage::add_global_constant(const StringName &p_variable, con
 /* DEBUGGER FUNCTIONS */
 
 bool VisualScriptLanguage::debug_break_parse(const String &p_file, int p_node, const String &p_error) {
-	//break because of parse error
+	// Break because of parse error.
 
 	if (EngineDebugger::is_active() && Thread::get_caller_id() == Thread::get_main_id()) {
 		_debug_parse_err_node = p_node;
@@ -2666,7 +2559,7 @@ void VisualScriptLanguage::debug_get_stack_level_members(int p_level, List<Strin
 }
 
 void VisualScriptLanguage::debug_get_globals(List<String> *p_locals, List<Variant> *p_values, int p_max_subitems, int p_max_depth) {
-	//no globals are really reachable in gdscript
+	// No globals are really reachable in gdscript.
 }
 
 String VisualScriptLanguage::debug_parse_stack_level_expression(int p_level, const String &p_expression, int p_max_subitems, int p_max_depth) {
@@ -2742,7 +2635,7 @@ VisualScriptLanguage::VisualScriptLanguage() {
 	ProjectSettings::get_singleton()->set_custom_property_info("debug/settings/visual_script/max_call_stack", PropertyInfo(Variant::INT, "debug/settings/visual_script/max_call_stack", PROPERTY_HINT_RANGE, "1024,4096,1,or_greater")); //minimum is 1024
 
 	if (EngineDebugger::is_active()) {
-		//debugging enabled!
+		// Debugging enabled!
 		_debug_max_call_stack = dmcs;
 		_call_stack = memnew_arr(CallLevel, _debug_max_call_stack + 1);
 
diff --git a/modules/visual_script/visual_script.h b/modules/visual_script/visual_script.h
index 3b634a3e13..bdb3c3a16b 100644
--- a/modules/visual_script/visual_script.h
+++ b/modules/visual_script/visual_script.h
@@ -46,7 +46,7 @@ class VisualScriptNode : public Resource {
 
 	friend class VisualScript;
 
-	Set<VisualScript *> scripts_used;
+	Ref<VisualScript> script_used;
 
 	Array default_input_values;
 	bool breakpoint;
@@ -83,7 +83,7 @@ public:
 	virtual String get_text() const;
 	virtual String get_category() const = 0;
 
-	//used by editor, this is not really saved
+	// Used by editor, this is not really saved.
 	void set_breakpoint(bool p_breakpoint);
 	bool is_breakpoint() const;
 
@@ -106,9 +106,9 @@ public:
 
 class VisualScriptNodeInstance {
 	friend class VisualScriptInstance;
-	friend class VisualScriptLanguage; //for debugger
+	friend class VisualScriptLanguage; // For debugger.
 
-	enum { //input argument addressing
+	enum { // Input argument addressing.
 		INPUT_SHIFT = 1 << 24,
 		INPUT_MASK = INPUT_SHIFT - 1,
 		INPUT_DEFAULT_VALUE_BIT = INPUT_SHIFT, // from unassigned input port, using default value (edited by user)
@@ -138,13 +138,13 @@ public:
 	enum {
 		STEP_SHIFT = 1 << 24,
 		STEP_MASK = STEP_SHIFT - 1,
-		STEP_FLAG_PUSH_STACK_BIT = STEP_SHIFT, //push bit to stack
-		STEP_FLAG_GO_BACK_BIT = STEP_SHIFT << 1, //go back to previous node
-		STEP_NO_ADVANCE_BIT = STEP_SHIFT << 2, //do not advance past this node
-		STEP_EXIT_FUNCTION_BIT = STEP_SHIFT << 3, //return from function
-		STEP_YIELD_BIT = STEP_SHIFT << 4, //yield (will find VisualScriptFunctionState state in first working memory)
+		STEP_FLAG_PUSH_STACK_BIT = STEP_SHIFT, // push bit to stack
+		STEP_FLAG_GO_BACK_BIT = STEP_SHIFT << 1, // go back to previous node
+		STEP_NO_ADVANCE_BIT = STEP_SHIFT << 2, // do not advance past this node
+		STEP_EXIT_FUNCTION_BIT = STEP_SHIFT << 3, // return from function
+		STEP_YIELD_BIT = STEP_SHIFT << 4, // yield (will find VisualScriptFunctionState state in first working memory)
 
-		FLOW_STACK_PUSHED_BIT = 1 << 30, //in flow stack, means bit was pushed (must go back here if end of sequence)
+		FLOW_STACK_PUSHED_BIT = 1 << 30, // in flow stack, means bit was pushed (must go back here if end of sequence)
 		FLOW_STACK_MASK = FLOW_STACK_PUSHED_BIT - 1
 
 	};
@@ -157,7 +157,7 @@ public:
 
 	virtual int get_working_memory_size() const { return 0; }
 
-	virtual int step(const Variant **p_inputs, Variant **p_outputs, StartMode p_start_mode, Variant *p_working_mem, Callable::CallError &r_error, String &r_error_str) = 0; //do a step, return which sequence port to go out
+	virtual int step(const Variant **p_inputs, Variant **p_outputs, StartMode p_start_mode, Variant *p_working_mem, Callable::CallError &r_error, String &r_error_str) = 0; // Do a step, return which sequence port to go out.
 
 	Ref<VisualScriptNode> get_base_node() { return Ref<VisualScriptNode>(base); }
 
@@ -211,34 +211,32 @@ private:
 		Variant::Type type;
 	};
 
-	struct Function {
-		struct NodeData {
-			Point2 pos;
-			Ref<VisualScriptNode> node;
-		};
-
-		Map<int, NodeData> nodes;
-
-		Set<SequenceConnection> sequence_connections;
+	struct NodeData {
+		Point2 pos;
+		Ref<VisualScriptNode> node;
+	};
 
-		Set<DataConnection> data_connections;
+	HashMap<int, NodeData> nodes; // Can be a sparse map.
 
-		int function_id;
+	Set<SequenceConnection> sequence_connections;
+	Set<DataConnection> data_connections;
 
-		Vector2 scroll;
+	Vector2 scroll;
 
-		Function() { function_id = -1; }
+	struct Function {
+		int func_id;
+		Function() { func_id = -1; }
 	};
 
 	struct Variable {
 		PropertyInfo info;
 		Variant default_value;
 		bool _export;
-		// add getter & setter options here
+		// Add getter & setter options here.
 	};
 
-	Map<StringName, Function> functions;
-	Map<StringName, Variable> variables;
+	HashMap<StringName, Function> functions;
+	HashMap<StringName, Variable> variables;
 	Map<StringName, Vector<Argument>> custom_signals;
 	Vector<ScriptNetData> rpc_functions;
 	Vector<ScriptNetData> rpc_variables;
@@ -249,7 +247,7 @@ private:
 
 #ifdef TOOLS_ENABLED
 	Set<PlaceHolderScriptInstance *> placeholders;
-	//void _update_placeholder(PlaceHolderScriptInstance *p_placeholder);
+	// void _update_placeholder(PlaceHolderScriptInstance *p_placeholder);
 	virtual void _placeholder_erased(PlaceHolderScriptInstance *p_placeholder) override;
 	void _update_placeholders();
 #endif
@@ -267,37 +265,38 @@ protected:
 public:
 	bool inherits_script(const Ref<Script> &p_script) const override;
 
-	// TODO: Remove it in future when breaking changes are acceptable
-	StringName get_default_func() const;
-	void add_function(const StringName &p_name);
+	void set_scroll(const Vector2 &p_scroll);
+	Vector2 get_scroll() const;
+
+	void add_function(const StringName &p_name, int p_func_node_id);
 	bool has_function(const StringName &p_name) const;
 	void remove_function(const StringName &p_name);
 	void rename_function(const StringName &p_name, const StringName &p_new_name);
-	void set_function_scroll(const StringName &p_name, const Vector2 &p_scroll);
-	Vector2 get_function_scroll(const StringName &p_name) const;
 	void get_function_list(List<StringName> *r_functions) const;
 	int get_function_node_id(const StringName &p_name) const;
 	void set_tool_enabled(bool p_enabled);
 
-	void add_node(const StringName &p_func, int p_id, const Ref<VisualScriptNode> &p_node, const Point2 &p_pos = Point2());
-	void remove_node(const StringName &p_func, int p_id);
-	bool has_node(const StringName &p_func, int p_id) const;
-	Ref<VisualScriptNode> get_node(const StringName &p_func, int p_id) const;
-	void set_node_position(const StringName &p_func, int p_id, const Point2 &p_pos);
-	Point2 get_node_position(const StringName &p_func, int p_id) const;
-	void get_node_list(const StringName &p_func, List<int> *r_nodes) const;
-
-	void sequence_connect(const StringName &p_func, int p_from_node, int p_from_output, int p_to_node);
-	void sequence_disconnect(const StringName &p_func, int p_from_node, int p_from_output, int p_to_node);
-	bool has_sequence_connection(const StringName &p_func, int p_from_node, int p_from_output, int p_to_node) const;
-	void get_sequence_connection_list(const StringName &p_func, List<SequenceConnection> *r_connection) const;
-
-	void data_connect(const StringName &p_func, int p_from_node, int p_from_port, int p_to_node, int p_to_port);
-	void data_disconnect(const StringName &p_func, int p_from_node, int p_from_port, int p_to_node, int p_to_port);
-	bool has_data_connection(const StringName &p_func, int p_from_node, int p_from_port, int p_to_node, int p_to_port) const;
-	void get_data_connection_list(const StringName &p_func, List<DataConnection> *r_connection) const;
-	bool is_input_value_port_connected(const StringName &p_func, int p_node, int p_port) const;
-	bool get_input_value_port_connection_source(const StringName &p_func, int p_node, int p_port, int *r_node, int *r_port) const;
+	void add_node(int p_id, const Ref<VisualScriptNode> &p_node, const Point2 &p_pos = Point2());
+	void remove_node(int p_id);
+	bool has_node(int p_id) const;
+	Ref<VisualScriptNode> get_node(int p_id) const;
+	void set_node_position(int p_id, const Point2 &p_pos);
+	Point2 get_node_position(int p_id) const;
+	void get_node_list(List<int> *r_nodes) const;
+
+	void sequence_connect(int p_from_node, int p_from_output, int p_to_node);
+	void sequence_disconnect(int p_from_node, int p_from_output, int p_to_node);
+	bool has_sequence_connection(int p_from_node, int p_from_output, int p_to_node) const;
+	void get_sequence_connection_list(List<SequenceConnection> *r_connection) const;
+	Set<int> get_output_sequence_ports_connected(int from_node);
+
+	void data_connect(int p_from_node, int p_from_port, int p_to_node, int p_to_port);
+	void data_disconnect(int p_from_node, int p_from_port, int p_to_node, int p_to_port);
+	bool has_data_connection(int p_from_node, int p_from_port, int p_to_node, int p_to_port) const;
+	void get_data_connection_list(List<DataConnection> *r_connection) const;
+
+	bool is_input_value_port_connected(int p_node, int p_port) const;
+	bool get_input_value_port_connection_source(int p_node, int p_port, int *r_node, int *r_port) const;
 
 	void add_variable(const StringName &p_name, const Variant &p_default_value = Variant(), bool p_export = false);
 	bool has_variable(const StringName &p_name) const;
@@ -392,7 +391,7 @@ class VisualScriptInstance : public ScriptInstance {
 	Object *owner;
 	Ref<VisualScript> script;
 
-	Map<StringName, Variant> variables; //using variable path, not script
+	Map<StringName, Variant> variables; // Using variable path, not script.
 	Map<int, VisualScriptNodeInstance *> instances;
 
 	struct Function {
@@ -415,9 +414,8 @@ class VisualScriptInstance : public ScriptInstance {
 	void _dependency_step(VisualScriptNodeInstance *node, int p_pass, int *pass_stack, const Variant **input_args, Variant **output_args, Variant *variant_stack, Callable::CallError &r_error, String &error_str, VisualScriptNodeInstance **r_error_node);
 	Variant _call_internal(const StringName &p_method, void *p_stack, int p_stack_size, VisualScriptNodeInstance *p_node, int p_flow_stack_pos, int p_pass, bool p_resuming_yield, Callable::CallError &r_error);
 
-	//Map<StringName,Function> functions;
-	friend class VisualScriptFunctionState; //for yield
-	friend class VisualScriptLanguage; //for debugger
+	friend class VisualScriptFunctionState; // For yield.
+	friend class VisualScriptLanguage; // For debugger.
 public:
 	virtual bool set(const StringName &p_name, const Variant &p_value);
 	virtual bool get(const StringName &p_name, Variant &r_ret) const;
@@ -538,7 +536,7 @@ public:
 
 	_FORCE_INLINE_ void enter_function(VisualScriptInstance *p_instance, const StringName *p_function, Variant *p_stack, Variant **p_work_mem, int *current_id) {
 		if (Thread::get_main_id() != Thread::get_caller_id()) {
-			return; //no support for other threads than main for now
+			return; // No support for other threads than main for now.
 		}
 
 		if (EngineDebugger::get_script_debugger()->get_lines_left() > 0 && EngineDebugger::get_script_debugger()->get_depth() >= 0) {
@@ -546,7 +544,7 @@ public:
 		}
 
 		if (_debug_call_stack_pos >= _debug_max_call_stack) {
-			//stack overflow
+			// Stack overflow.
 			_debug_error = "Stack Overflow (Stack Size: " + itos(_debug_max_call_stack) + ")";
 			EngineDebugger::get_script_debugger()->debug(this);
 			return;
@@ -562,7 +560,7 @@ public:
 
 	_FORCE_INLINE_ void exit_function() {
 		if (Thread::get_main_id() != Thread::get_caller_id()) {
-			return; //no support for other threads than main for now
+			return; // No support for other threads than main for now.
 		}
 
 		if (EngineDebugger::get_script_debugger()->get_lines_left() > 0 && EngineDebugger::get_script_debugger()->get_depth() >= 0) {
@@ -640,7 +638,7 @@ public:
 	~VisualScriptLanguage();
 };
 
-//aid for registering
+// Aid for registering.
 template <class T>
 static Ref<VisualScriptNode> create_node_generic(const String &p_name) {
 	Ref<T> node;
diff --git a/modules/visual_script/visual_script_editor.cpp b/modules/visual_script/visual_script_editor.cpp
index e46c4638b1..3fbf19a48d 100644
--- a/modules/visual_script/visual_script_editor.cpp
+++ b/modules/visual_script/visual_script_editor.cpp
@@ -199,7 +199,7 @@ protected:
 		emit_signal("changed");
 	}
 	void _var_value_changed() {
-		_change_notify("value"); //so the whole tree is not redrawn, makes editing smoother in general
+		_change_notify("value"); // So the whole tree is not redrawn, makes editing smoother in general.
 		emit_signal("changed");
 	}
 
@@ -309,7 +309,7 @@ protected:
 		}
 		p_list->push_back(PropertyInfo(Variant::INT, "type", PROPERTY_HINT_ENUM, argt));
 		p_list->push_back(PropertyInfo(script->get_variable_info(var).type, "value", script->get_variable_info(var).hint, script->get_variable_info(var).hint_string, PROPERTY_USAGE_DEFAULT));
-		// Update this when PropertyHint changes
+		// Update this when PropertyHint changes.
 		p_list->push_back(PropertyInfo(Variant::INT, "hint", PROPERTY_HINT_ENUM, "None,Range,ExpRange,Enum,ExpEasing,Length,SpriteFrame,KeyAccel,Flags,Layers2dRender,Layers2dPhysics,Layer3dRender,Layer3dPhysics,File,Dir,GlobalFile,GlobalDir,ResourceType,MultilineText,PlaceholderText,ColorNoAlpha,ImageCompressLossy,ImageCompressLossLess,ObjectId,String,NodePathToEditedNode,MethodOfVariantType,MethodOfBaseType,MethodOfInstance,MethodOfScript,PropertyOfVariantType,PropertyOfBaseType,PropertyOfInstance,PropertyOfScript,ObjectTooBig,NodePathValidTypes"));
 		p_list->push_back(PropertyInfo(Variant::STRING, "hint_string"));
 		p_list->push_back(PropertyInfo(Variant::BOOL, "export"));
@@ -546,39 +546,29 @@ static Color _color_from_type(Variant::Type p_type, bool dark_theme = true) {
 void VisualScriptEditor::_update_graph_connections() {
 	graph->clear_connections();
 
-	List<StringName> funcs;
-	script->get_function_list(&funcs);
+	List<VisualScript::SequenceConnection> sequence_conns;
+	script->get_sequence_connection_list(&sequence_conns);
 
-	if (funcs.size() <= 0) {
-		updating_graph = false;
-		return;
+	for (List<VisualScript::SequenceConnection>::Element *E = sequence_conns.front(); E; E = E->next()) {
+		graph->connect_node(itos(E->get().from_node), E->get().from_output, itos(E->get().to_node), 0);
 	}
 
-	for (List<StringName>::Element *F = funcs.front(); F; F = F->next()) {
-		List<VisualScript::SequenceConnection> sequence_conns;
-		script->get_sequence_connection_list(F->get(), &sequence_conns);
-
-		for (List<VisualScript::SequenceConnection>::Element *E = sequence_conns.front(); E; E = E->next()) {
-			graph->connect_node(itos(E->get().from_node), E->get().from_output, itos(E->get().to_node), 0);
-		}
-
-		List<VisualScript::DataConnection> data_conns;
-		script->get_data_connection_list(F->get(), &data_conns);
+	List<VisualScript::DataConnection> data_conns;
+	script->get_data_connection_list(&data_conns);
 
-		for (List<VisualScript::DataConnection>::Element *E = data_conns.front(); E; E = E->next()) {
-			VisualScript::DataConnection dc = E->get();
+	for (List<VisualScript::DataConnection>::Element *E = data_conns.front(); E; E = E->next()) {
+		VisualScript::DataConnection dc = E->get();
 
-			Ref<VisualScriptNode> from_node = script->get_node(F->get(), E->get().from_node);
-			Ref<VisualScriptNode> to_node = script->get_node(F->get(), E->get().to_node);
+		Ref<VisualScriptNode> from_node = script->get_node(E->get().from_node);
+		Ref<VisualScriptNode> to_node = script->get_node(E->get().to_node);
 
-			if (to_node->has_input_sequence_port()) {
-				dc.to_port++;
-			}
+		if (to_node->has_input_sequence_port()) {
+			dc.to_port++;
+		}
 
-			dc.from_port += from_node->get_output_sequence_port_count();
+		dc.from_port += from_node->get_output_sequence_port_count();
 
-			graph->connect_node(itos(E->get().from_node), dc.from_port, itos(E->get().to_node), dc.to_port);
-		}
+		graph->connect_node(itos(E->get().from_node), dc.from_port, itos(E->get().to_node), dc.to_port);
 	}
 }
 
@@ -605,17 +595,6 @@ void VisualScriptEditor::_update_graph(int p_only_id) {
 			}
 		}
 	}
-
-	List<StringName> funcs;
-	script->get_function_list(&funcs);
-
-	if (funcs.size() <= 0) {
-		graph->hide();
-		select_func_text->show();
-		updating_graph = false;
-		return;
-	}
-
 	graph->show();
 	select_func_text->hide();
 
@@ -655,348 +634,347 @@ void VisualScriptEditor::_update_graph(int p_only_id) {
 	};
 
 	Ref<Texture2D> seq_port = Control::get_theme_icon("VisualShaderPort", "EditorIcons");
+	List<int> node_ids;
+	script->get_node_list(&node_ids);
 
-	for (List<StringName>::Element *F = funcs.front(); F; F = F->next()) { // loop through all the functions
-
-		List<int> ids;
-		script->get_node_list(F->get(), &ids);
-		StringName editor_icons = "EditorIcons";
+	List<int> ids;
+	script->get_node_list(&ids);
+	StringName editor_icons = "EditorIcons";
 
-		for (List<int>::Element *E = ids.front(); E; E = E->next()) {
-			if (p_only_id >= 0 && p_only_id != E->get()) {
-				continue;
-			}
+	for (List<int>::Element *E = ids.front(); E; E = E->next()) {
+		if (p_only_id >= 0 && p_only_id != E->get()) {
+			continue;
+		}
 
-			Ref<VisualScriptNode> node = script->get_node(F->get(), E->get());
-			Vector2 pos = script->get_node_position(F->get(), E->get());
+		Ref<VisualScriptNode> node = script->get_node(E->get());
+		Vector2 pos = script->get_node_position(E->get());
 
-			GraphNode *gnode = memnew(GraphNode);
-			gnode->set_title(node->get_caption());
-			gnode->set_position_offset(pos * EDSCALE);
-			if (error_line == E->get()) {
-				gnode->set_overlay(GraphNode::OVERLAY_POSITION);
-			} else if (node->is_breakpoint()) {
-				gnode->set_overlay(GraphNode::OVERLAY_BREAKPOINT);
-			}
+		GraphNode *gnode = memnew(GraphNode);
+		gnode->set_title(node->get_caption());
+		gnode->set_position_offset(pos * EDSCALE);
+		if (error_line == E->get()) {
+			gnode->set_overlay(GraphNode::OVERLAY_POSITION);
+		} else if (node->is_breakpoint()) {
+			gnode->set_overlay(GraphNode::OVERLAY_BREAKPOINT);
+		}
 
-			gnode->set_meta("__vnode", node);
-			gnode->set_name(itos(E->get()));
-			gnode->connect("dragged", callable_mp(this, &VisualScriptEditor::_node_moved), varray(E->get()));
-			gnode->connect("close_request", callable_mp(this, &VisualScriptEditor::_remove_node), varray(E->get()), CONNECT_DEFERRED);
+		gnode->set_meta("__vnode", node);
+		gnode->set_name(itos(E->get()));
+		gnode->connect("dragged", callable_mp(this, &VisualScriptEditor::_node_moved), varray(E->get()));
+		gnode->connect("close_request", callable_mp(this, &VisualScriptEditor::_remove_node), varray(E->get()), CONNECT_DEFERRED);
 
-			if (E->get() != script->get_function_node_id(F->get())) {
-				//function can't be erased
+		{
+			Ref<VisualScriptFunction> v = node;
+			if (!v.is_valid()) {
 				gnode->set_show_close_button(true);
 			}
+		}
 
-			bool has_gnode_text = false;
+		bool has_gnode_text = false;
 
-			Ref<VisualScriptLists> nd_list = node;
-			bool is_vslist = nd_list.is_valid();
-			if (is_vslist) {
-				HBoxContainer *hbnc = memnew(HBoxContainer);
+		Ref<VisualScriptLists> nd_list = node;
+		bool is_vslist = nd_list.is_valid();
+		if (is_vslist) {
+			HBoxContainer *hbnc = memnew(HBoxContainer);
+			if (nd_list->is_input_port_editable()) {
+				has_gnode_text = true;
+				Button *btn = memnew(Button);
+				btn->set_text(TTR("Add Input Port"));
+				hbnc->add_child(btn);
+				btn->connect("pressed", callable_mp(this, &VisualScriptEditor::_add_input_port), varray(E->get()), CONNECT_DEFERRED);
+			}
+			if (nd_list->is_output_port_editable()) {
 				if (nd_list->is_input_port_editable()) {
-					has_gnode_text = true;
-					Button *btn = memnew(Button);
-					btn->set_text(TTR("Add Input Port"));
-					hbnc->add_child(btn);
-					btn->connect("pressed", callable_mp(this, &VisualScriptEditor::_add_input_port), varray(E->get()), CONNECT_DEFERRED);
-				}
-				if (nd_list->is_output_port_editable()) {
-					if (nd_list->is_input_port_editable()) {
-						hbnc->add_spacer();
-					}
-					has_gnode_text = true;
-					Button *btn = memnew(Button);
-					btn->set_text(TTR("Add Output Port"));
-					hbnc->add_child(btn);
-					btn->connect("pressed", callable_mp(this, &VisualScriptEditor::_add_output_port), varray(E->get()), CONNECT_DEFERRED);
+					hbnc->add_spacer();
 				}
-				gnode->add_child(hbnc);
-			} else if (Object::cast_to<VisualScriptExpression>(node.ptr())) {
 				has_gnode_text = true;
-				LineEdit *line_edit = memnew(LineEdit);
-				line_edit->set_text(node->get_text());
-				line_edit->set_expand_to_text_length(true);
-				line_edit->add_theme_font_override("font", get_theme_font("source", "EditorFonts"));
-				line_edit->add_theme_font_size_override("font_size", get_theme_font_size("source_size", "EditorFonts"));
-				gnode->add_child(line_edit);
-				line_edit->connect("text_changed", callable_mp(this, &VisualScriptEditor::_expression_text_changed), varray(E->get()));
-			} else {
-				String text = node->get_text();
-				if (!text.is_empty()) {
-					has_gnode_text = true;
-					Label *label = memnew(Label);
-					label->set_text(text);
-					gnode->add_child(label);
-				}
+				Button *btn = memnew(Button);
+				btn->set_text(TTR("Add Output Port"));
+				hbnc->add_child(btn);
+				btn->connect("pressed", callable_mp(this, &VisualScriptEditor::_add_output_port), varray(E->get()), CONNECT_DEFERRED);
 			}
-
-			if (Object::cast_to<VisualScriptComment>(node.ptr())) {
-				Ref<VisualScriptComment> vsc = node;
-				gnode->set_comment(true);
-				gnode->set_resizable(true);
-				gnode->set_custom_minimum_size(vsc->get_size() * EDSCALE);
-				gnode->connect("resize_request", callable_mp(this, &VisualScriptEditor::_comment_node_resized), varray(E->get()));
+			gnode->add_child(hbnc);
+		} else if (Object::cast_to<VisualScriptExpression>(node.ptr())) {
+			has_gnode_text = true;
+			LineEdit *line_edit = memnew(LineEdit);
+			line_edit->set_text(node->get_text());
+			line_edit->set_expand_to_text_length(true);
+			line_edit->add_theme_font_override("font", get_theme_font("source", "EditorFonts"));
+			gnode->add_child(line_edit);
+			line_edit->connect("text_changed", callable_mp(this, &VisualScriptEditor::_expression_text_changed), varray(E->get()));
+		} else {
+			String text = node->get_text();
+			if (!text.is_empty()) {
+				has_gnode_text = true;
+				Label *label = memnew(Label);
+				label->set_text(text);
+				gnode->add_child(label);
 			}
+		}
 
-			if (node_styles.has(node->get_category())) {
-				Ref<StyleBoxFlat> sbf = node_styles[node->get_category()];
-				if (gnode->is_comment()) {
-					sbf = EditorNode::get_singleton()->get_theme_base()->get_theme()->get_stylebox("comment", "GraphNode");
-				}
+		if (Object::cast_to<VisualScriptComment>(node.ptr())) {
+			Ref<VisualScriptComment> vsc = node;
+			gnode->set_comment(true);
+			gnode->set_resizable(true);
+			gnode->set_custom_minimum_size(vsc->get_size() * EDSCALE);
+			gnode->connect("resize_request", callable_mp(this, &VisualScriptEditor::_comment_node_resized), varray(E->get()));
+		}
 
-				Color c = sbf->get_border_color();
-				Color ic = c;
-				c.a = 1;
-				if (EditorSettings::get_singleton()->get("interface/theme/use_graph_node_headers")) {
-					Color mono_color;
-					if (((c.r + c.g + c.b) / 3) < 0.7) {
-						mono_color = Color(1.0, 1.0, 1.0);
-						ic = Color(0.0, 0.0, 0.0, 0.7);
-					} else {
-						mono_color = Color(0.0, 0.0, 0.0);
-						ic = Color(1.0, 1.0, 1.0, 0.7);
-					}
-					mono_color.a = 0.85;
-					c = mono_color;
+		if (node_styles.has(node->get_category())) {
+			Ref<StyleBoxFlat> sbf = node_styles[node->get_category()];
+			if (gnode->is_comment()) {
+				sbf = EditorNode::get_singleton()->get_theme_base()->get_theme()->get_stylebox("comment", "GraphNode");
+			}
+
+			Color c = sbf->get_border_color();
+			Color ic = c;
+			c.a = 1;
+			if (EditorSettings::get_singleton()->get("interface/theme/use_graph_node_headers")) {
+				Color mono_color;
+				if (((c.r + c.g + c.b) / 3) < 0.7) {
+					mono_color = Color(1.0, 1.0, 1.0);
+					ic = Color(0.0, 0.0, 0.0, 0.7);
+				} else {
+					mono_color = Color(0.0, 0.0, 0.0);
+					ic = Color(1.0, 1.0, 1.0, 0.7);
 				}
-				gnode->add_theme_color_override("title_color", c);
-				c.a = 0.7;
-				gnode->add_theme_color_override("close_color", c);
-				gnode->add_theme_color_override("resizer_color", ic);
-				gnode->add_theme_style_override("frame", sbf);
+				mono_color.a = 0.85;
+				c = mono_color;
 			}
+			gnode->add_theme_color_override("title_color", c);
+			c.a = 0.7;
+			gnode->add_theme_color_override("close_color", c);
+			gnode->add_theme_color_override("resizer_color", ic);
+			gnode->add_theme_style_override("frame", sbf);
+		}
 
-			const Color mono_color = get_theme_color("mono_color", "Editor");
+		const Color mono_color = get_theme_color("mono_color", "Editor");
 
-			int slot_idx = 0;
+		int slot_idx = 0;
 
-			bool single_seq_output = node->get_output_sequence_port_count() == 1 && node->get_output_sequence_port_text(0) == String();
-			if ((node->has_input_sequence_port() || single_seq_output) || has_gnode_text) {
-				// IF has_gnode_text is true BUT we have no sequence ports to draw (in here),
-				// we still draw the disabled default ones to shift up the slots by one,
-				// so the slots DON'T start with the content text.
+		bool single_seq_output = node->get_output_sequence_port_count() == 1 && node->get_output_sequence_port_text(0) == String();
+		if ((node->has_input_sequence_port() || single_seq_output) || has_gnode_text) {
+			// IF has_gnode_text is true BUT we have no sequence ports to draw (in here),
+			// we still draw the disabled default ones to shift up the slots by one,
+			// so the slots DON'T start with the content text.
 
-				// IF has_gnode_text is false, but we DO want to draw default sequence ports,
-				// we draw a dummy text to take up the position of the sequence nodes, so all the other ports are still aligned correctly.
-				if (!has_gnode_text) {
-					Label *dummy = memnew(Label);
-					dummy->set_text(" ");
-					gnode->add_child(dummy);
-				}
-				gnode->set_slot(0, node->has_input_sequence_port(), TYPE_SEQUENCE, mono_color, single_seq_output, TYPE_SEQUENCE, mono_color, seq_port, seq_port);
-				slot_idx++;
+			// IF has_gnode_text is false, but we DO want to draw default sequence ports,
+			// we draw a dummy text to take up the position of the sequence nodes, so all the other ports are still aligned correctly.
+			if (!has_gnode_text) {
+				Label *dummy = memnew(Label);
+				dummy->set_text(" ");
+				gnode->add_child(dummy);
 			}
+			gnode->set_slot(0, node->has_input_sequence_port(), TYPE_SEQUENCE, mono_color, single_seq_output, TYPE_SEQUENCE, mono_color, seq_port, seq_port);
+			slot_idx++;
+		}
 
-			int mixed_seq_ports = 0;
+		int mixed_seq_ports = 0;
 
-			if (!single_seq_output) {
-				if (node->has_mixed_input_and_sequence_ports()) {
-					mixed_seq_ports = node->get_output_sequence_port_count();
-				} else {
-					for (int i = 0; i < node->get_output_sequence_port_count(); i++) {
-						Label *text2 = memnew(Label);
-						text2->set_text(node->get_output_sequence_port_text(i));
-						text2->set_align(Label::ALIGN_RIGHT);
-						gnode->add_child(text2);
-						gnode->set_slot(slot_idx, false, 0, Color(), true, TYPE_SEQUENCE, mono_color, seq_port, seq_port);
-						slot_idx++;
-					}
+		if (!single_seq_output) {
+			if (node->has_mixed_input_and_sequence_ports()) {
+				mixed_seq_ports = node->get_output_sequence_port_count();
+			} else {
+				for (int i = 0; i < node->get_output_sequence_port_count(); i++) {
+					Label *text2 = memnew(Label);
+					text2->set_text(node->get_output_sequence_port_text(i));
+					text2->set_align(Label::ALIGN_RIGHT);
+					gnode->add_child(text2);
+					gnode->set_slot(slot_idx, false, 0, Color(), true, TYPE_SEQUENCE, mono_color, seq_port, seq_port);
+					slot_idx++;
 				}
 			}
+		}
 
-			for (int i = 0; i < MAX(node->get_output_value_port_count(), MAX(mixed_seq_ports, node->get_input_value_port_count())); i++) {
-				bool left_ok = false;
-				Variant::Type left_type = Variant::NIL;
-				String left_name;
+		for (int i = 0; i < MAX(node->get_output_value_port_count(), MAX(mixed_seq_ports, node->get_input_value_port_count())); i++) {
+			bool left_ok = false;
+			Variant::Type left_type = Variant::NIL;
+			String left_name;
 
-				if (i < node->get_input_value_port_count()) {
-					PropertyInfo pi = node->get_input_value_port_info(i);
-					left_ok = true;
-					left_type = pi.type;
-					left_name = pi.name;
-				}
+			if (i < node->get_input_value_port_count()) {
+				PropertyInfo pi = node->get_input_value_port_info(i);
+				left_ok = true;
+				left_type = pi.type;
+				left_name = pi.name;
+			}
 
-				bool right_ok = false;
-				Variant::Type right_type = Variant::NIL;
-				String right_name;
+			bool right_ok = false;
+			Variant::Type right_type = Variant::NIL;
+			String right_name;
 
-				if (i >= mixed_seq_ports && i < node->get_output_value_port_count() + mixed_seq_ports) {
-					PropertyInfo pi = node->get_output_value_port_info(i - mixed_seq_ports);
-					right_ok = true;
-					right_type = pi.type;
-					right_name = pi.name;
+			if (i >= mixed_seq_ports && i < node->get_output_value_port_count() + mixed_seq_ports) {
+				PropertyInfo pi = node->get_output_value_port_info(i - mixed_seq_ports);
+				right_ok = true;
+				right_type = pi.type;
+				right_name = pi.name;
+			}
+			VBoxContainer *vbc = memnew(VBoxContainer);
+			HBoxContainer *hbc = memnew(HBoxContainer);
+			HBoxContainer *hbc2 = memnew(HBoxContainer);
+			vbc->add_child(hbc);
+			vbc->add_child(hbc2);
+			if (left_ok) {
+				Ref<Texture2D> t;
+				if (left_type >= 0 && left_type < Variant::VARIANT_MAX) {
+					t = type_icons[left_type];
+				}
+				if (t.is_valid()) {
+					TextureRect *tf = memnew(TextureRect);
+					tf->set_texture(t);
+					tf->set_stretch_mode(TextureRect::STRETCH_KEEP_CENTERED);
+					hbc->add_child(tf);
 				}
-				VBoxContainer *vbc = memnew(VBoxContainer);
-				HBoxContainer *hbc = memnew(HBoxContainer);
-				HBoxContainer *hbc2 = memnew(HBoxContainer);
-				vbc->add_child(hbc);
-				vbc->add_child(hbc2);
-				if (left_ok) {
-					Ref<Texture2D> t;
-					if (left_type >= 0 && left_type < Variant::VARIANT_MAX) {
-						t = type_icons[left_type];
-					}
-					if (t.is_valid()) {
-						TextureRect *tf = memnew(TextureRect);
-						tf->set_texture(t);
-						tf->set_stretch_mode(TextureRect::STRETCH_KEEP_CENTERED);
-						hbc->add_child(tf);
-					}
-
-					if (is_vslist) {
-						if (nd_list->is_input_port_name_editable()) {
-							LineEdit *name_box = memnew(LineEdit);
-							hbc->add_child(name_box);
-							name_box->set_custom_minimum_size(Size2(60 * EDSCALE, 0));
-							name_box->set_text(left_name);
-							name_box->set_expand_to_text_length(true);
-							name_box->connect("resized", callable_mp(this, &VisualScriptEditor::_update_node_size), varray(E->get()));
-							name_box->connect("focus_exited", callable_mp(this, &VisualScriptEditor::_port_name_focus_out), varray(name_box, E->get(), i, true));
-						} else {
-							hbc->add_child(memnew(Label(left_name)));
-						}
-
-						if (nd_list->is_input_port_type_editable()) {
-							OptionButton *opbtn = memnew(OptionButton);
-							for (int j = Variant::NIL; j < Variant::VARIANT_MAX; j++) {
-								opbtn->add_item(Variant::get_type_name(Variant::Type(j)));
-							}
-							opbtn->select(left_type);
-							opbtn->set_custom_minimum_size(Size2(100 * EDSCALE, 0));
-							hbc->add_child(opbtn);
-							opbtn->connect("item_selected", callable_mp(this, &VisualScriptEditor::_change_port_type), varray(E->get(), i, true), CONNECT_DEFERRED);
-						}
 
-						Button *rmbtn = memnew(Button);
-						rmbtn->set_icon(EditorNode::get_singleton()->get_gui_base()->get_theme_icon("Remove", "EditorIcons"));
-						hbc->add_child(rmbtn);
-						rmbtn->connect("pressed", callable_mp(this, &VisualScriptEditor::_remove_input_port), varray(E->get(), i), CONNECT_DEFERRED);
+				if (is_vslist) {
+					if (nd_list->is_input_port_name_editable()) {
+						LineEdit *name_box = memnew(LineEdit);
+						hbc->add_child(name_box);
+						name_box->set_custom_minimum_size(Size2(60 * EDSCALE, 0));
+						name_box->set_text(left_name);
+						name_box->set_expand_to_text_length(true);
+						name_box->connect("resized", callable_mp(this, &VisualScriptEditor::_update_node_size), varray(E->get()));
+						name_box->connect("focus_exited", callable_mp(this, &VisualScriptEditor::_port_name_focus_out), varray(name_box, E->get(), i, true));
 					} else {
 						hbc->add_child(memnew(Label(left_name)));
 					}
 
-					if (left_type != Variant::NIL && !script->is_input_value_port_connected(F->get(), E->get(), i)) {
-						PropertyInfo pi = node->get_input_value_port_info(i);
-						Button *button = memnew(Button);
-						Variant value = node->get_default_input_value(i);
-						if (value.get_type() != left_type) {
-							//different type? for now convert
-							//not the same, reconvert
-							Callable::CallError ce;
-							const Variant *existingp = &value;
-							Variant::construct(left_type, value, &existingp, 1, ce);
+					if (nd_list->is_input_port_type_editable()) {
+						OptionButton *opbtn = memnew(OptionButton);
+						for (int j = Variant::NIL; j < Variant::VARIANT_MAX; j++) {
+							opbtn->add_item(Variant::get_type_name(Variant::Type(j)));
 						}
-
-						if (left_type == Variant::COLOR) {
-							button->set_custom_minimum_size(Size2(30, 0) * EDSCALE);
-							button->connect("draw", callable_mp(this, &VisualScriptEditor::_draw_color_over_button), varray(button, value));
-						} else if (left_type == Variant::OBJECT && Ref<Resource>(value).is_valid()) {
-							Ref<Resource> res = value;
-							Array arr;
-							arr.push_back(button->get_instance_id());
-							arr.push_back(String(value));
-							EditorResourcePreview::get_singleton()->queue_edited_resource_preview(res, this, "_button_resource_previewed", arr);
-
-						} else if (pi.type == Variant::INT && pi.hint == PROPERTY_HINT_ENUM) {
-							button->set_text(pi.hint_string.get_slice(",", value));
-						} else {
-							button->set_text(value);
-						}
-						button->connect("pressed", callable_mp(this, &VisualScriptEditor::_default_value_edited), varray(button, E->get(), i));
-						hbc2->add_child(button);
+						opbtn->select(left_type);
+						opbtn->set_custom_minimum_size(Size2(100 * EDSCALE, 0));
+						hbc->add_child(opbtn);
+						opbtn->connect("item_selected", callable_mp(this, &VisualScriptEditor::_change_port_type), varray(E->get(), i, true), CONNECT_DEFERRED);
 					}
+
+					Button *rmbtn = memnew(Button);
+					rmbtn->set_icon(EditorNode::get_singleton()->get_gui_base()->get_theme_icon("Remove", "EditorIcons"));
+					hbc->add_child(rmbtn);
+					rmbtn->connect("pressed", callable_mp(this, &VisualScriptEditor::_remove_input_port), varray(E->get(), i), CONNECT_DEFERRED);
 				} else {
-					Control *c = memnew(Control);
-					c->set_custom_minimum_size(Size2(10, 0) * EDSCALE);
-					hbc->add_child(c);
+					hbc->add_child(memnew(Label(left_name)));
 				}
 
-				hbc->add_spacer();
-				hbc2->add_spacer();
+				if (left_type != Variant::NIL && !script->is_input_value_port_connected(E->get(), i)) {
+					PropertyInfo pi = node->get_input_value_port_info(i);
+					Button *button = memnew(Button);
+					Variant value = node->get_default_input_value(i);
+					if (value.get_type() != left_type) {
+						//different type? for now convert
+						//not the same, reconvert
+						Callable::CallError ce;
+						const Variant *existingp = &value;
+						Variant::construct(left_type, value, &existingp, 1, ce);
+					}
 
-				if (i < mixed_seq_ports) {
-					Label *text2 = memnew(Label);
-					text2->set_text(node->get_output_sequence_port_text(i));
-					text2->set_align(Label::ALIGN_RIGHT);
-					hbc->add_child(text2);
+					if (left_type == Variant::COLOR) {
+						button->set_custom_minimum_size(Size2(30, 0) * EDSCALE);
+						button->connect("draw", callable_mp(this, &VisualScriptEditor::_draw_color_over_button), varray(button, value));
+					} else if (left_type == Variant::OBJECT && Ref<Resource>(value).is_valid()) {
+						Ref<Resource> res = value;
+						Array arr;
+						arr.push_back(button->get_instance_id());
+						arr.push_back(String(value));
+						EditorResourcePreview::get_singleton()->queue_edited_resource_preview(res, this, "_button_resource_previewed", arr);
+
+					} else if (pi.type == Variant::INT && pi.hint == PROPERTY_HINT_ENUM) {
+						button->set_text(pi.hint_string.get_slice(",", value));
+					} else {
+						button->set_text(value);
+					}
+					button->connect("pressed", callable_mp(this, &VisualScriptEditor::_default_value_edited), varray(button, E->get(), i));
+					hbc2->add_child(button);
 				}
+			} else {
+				Control *c = memnew(Control);
+				c->set_custom_minimum_size(Size2(10, 0) * EDSCALE);
+				hbc->add_child(c);
+			}
 
-				if (right_ok) {
-					if (is_vslist) {
-						Button *rmbtn = memnew(Button);
-						rmbtn->set_icon(EditorNode::get_singleton()->get_gui_base()->get_theme_icon("Remove", "EditorIcons"));
-						hbc->add_child(rmbtn);
-						rmbtn->connect("pressed", callable_mp(this, &VisualScriptEditor::_remove_output_port), varray(E->get(), i), CONNECT_DEFERRED);
-
-						if (nd_list->is_output_port_type_editable()) {
-							OptionButton *opbtn = memnew(OptionButton);
-							for (int j = Variant::NIL; j < Variant::VARIANT_MAX; j++) {
-								opbtn->add_item(Variant::get_type_name(Variant::Type(j)));
-							}
-							opbtn->select(right_type);
-							opbtn->set_custom_minimum_size(Size2(100 * EDSCALE, 0));
-							hbc->add_child(opbtn);
-							opbtn->connect("item_selected", callable_mp(this, &VisualScriptEditor::_change_port_type), varray(E->get(), i, false), CONNECT_DEFERRED);
-						}
+			hbc->add_spacer();
+			hbc2->add_spacer();
+
+			if (i < mixed_seq_ports) {
+				Label *text2 = memnew(Label);
+				text2->set_text(node->get_output_sequence_port_text(i));
+				text2->set_align(Label::ALIGN_RIGHT);
+				hbc->add_child(text2);
+			}
 
-						if (nd_list->is_output_port_name_editable()) {
-							LineEdit *name_box = memnew(LineEdit);
-							hbc->add_child(name_box);
-							name_box->set_custom_minimum_size(Size2(60 * EDSCALE, 0));
-							name_box->set_text(right_name);
-							name_box->set_expand_to_text_length(true);
-							name_box->connect("resized", callable_mp(this, &VisualScriptEditor::_update_node_size), varray(E->get()));
-							name_box->connect("focus_exited", callable_mp(this, &VisualScriptEditor::_port_name_focus_out), varray(name_box, E->get(), i, false));
-						} else {
-							hbc->add_child(memnew(Label(right_name)));
+			if (right_ok) {
+				if (is_vslist) {
+					Button *rmbtn = memnew(Button);
+					rmbtn->set_icon(EditorNode::get_singleton()->get_gui_base()->get_theme_icon("Remove", "EditorIcons"));
+					hbc->add_child(rmbtn);
+					rmbtn->connect("pressed", callable_mp(this, &VisualScriptEditor::_remove_output_port), varray(E->get(), i), CONNECT_DEFERRED);
+
+					if (nd_list->is_output_port_type_editable()) {
+						OptionButton *opbtn = memnew(OptionButton);
+						for (int j = Variant::NIL; j < Variant::VARIANT_MAX; j++) {
+							opbtn->add_item(Variant::get_type_name(Variant::Type(j)));
 						}
-					} else {
-						hbc->add_child(memnew(Label(right_name)));
+						opbtn->select(right_type);
+						opbtn->set_custom_minimum_size(Size2(100 * EDSCALE, 0));
+						hbc->add_child(opbtn);
+						opbtn->connect("item_selected", callable_mp(this, &VisualScriptEditor::_change_port_type), varray(E->get(), i, false), CONNECT_DEFERRED);
 					}
 
-					Ref<Texture2D> t;
-					if (right_type >= 0 && right_type < Variant::VARIANT_MAX) {
-						t = type_icons[right_type];
-					}
-					if (t.is_valid()) {
-						TextureRect *tf = memnew(TextureRect);
-						tf->set_texture(t);
-						tf->set_stretch_mode(TextureRect::STRETCH_KEEP_CENTERED);
-						hbc->add_child(tf);
+					if (nd_list->is_output_port_name_editable()) {
+						LineEdit *name_box = memnew(LineEdit);
+						hbc->add_child(name_box);
+						name_box->set_custom_minimum_size(Size2(60 * EDSCALE, 0));
+						name_box->set_text(right_name);
+						name_box->set_expand_to_text_length(true);
+						name_box->connect("resized", callable_mp(this, &VisualScriptEditor::_update_node_size), varray(E->get()));
+						name_box->connect("focus_exited", callable_mp(this, &VisualScriptEditor::_port_name_focus_out), varray(name_box, E->get(), i, false));
+					} else {
+						hbc->add_child(memnew(Label(right_name)));
 					}
-				}
-
-				gnode->add_child(vbc);
-
-				bool dark_theme = get_theme_constant("dark_theme", "Editor");
-				if (i < mixed_seq_ports) {
-					gnode->set_slot(slot_idx, left_ok, left_type, _color_from_type(left_type, dark_theme), true, TYPE_SEQUENCE, mono_color, Ref<Texture2D>(), seq_port);
 				} else {
-					gnode->set_slot(slot_idx, left_ok, left_type, _color_from_type(left_type, dark_theme), right_ok, right_type, _color_from_type(right_type, dark_theme));
+					hbc->add_child(memnew(Label(right_name)));
 				}
 
-				slot_idx++;
+				Ref<Texture2D> t;
+				if (right_type >= 0 && right_type < Variant::VARIANT_MAX) {
+					t = type_icons[right_type];
+				}
+				if (t.is_valid()) {
+					TextureRect *tf = memnew(TextureRect);
+					tf->set_texture(t);
+					tf->set_stretch_mode(TextureRect::STRETCH_KEEP_CENTERED);
+					hbc->add_child(tf);
+				}
 			}
 
-			graph->add_child(gnode);
+			gnode->add_child(vbc);
 
-			if (gnode->is_comment()) {
-				graph->move_child(gnode, 0);
+			bool dark_theme = get_theme_constant("dark_theme", "Editor");
+			if (i < mixed_seq_ports) {
+				gnode->set_slot(slot_idx, left_ok, left_type, _color_from_type(left_type, dark_theme), true, TYPE_SEQUENCE, mono_color, Ref<Texture2D>(), seq_port);
+			} else {
+				gnode->set_slot(slot_idx, left_ok, left_type, _color_from_type(left_type, dark_theme), right_ok, right_type, _color_from_type(right_type, dark_theme));
 			}
+
+			slot_idx++;
+		}
+
+		graph->add_child(gnode);
+
+		if (gnode->is_comment()) {
+			graph->move_child(gnode, 0);
 		}
 	}
+
 	_update_graph_connections();
-	// use default_func instead of default_func for now I think that should be good stop gap solution to ensure not breaking anything
-	graph->call_deferred("set_scroll_ofs", script->get_function_scroll(default_func) * EDSCALE);
+	// Use default_func instead of default_func for now I think that should be good stop gap solution to ensure not breaking anything.
+	graph->call_deferred("set_scroll_ofs", script->get_scroll() * EDSCALE);
 	updating_graph = false;
 }
 
 void VisualScriptEditor::_change_port_type(int p_select, int p_id, int p_port, bool is_input) {
-	StringName func = _get_function_of_node(p_id);
-
-	Ref<VisualScriptLists> vsn = script->get_node(func, p_id);
+	Ref<VisualScriptLists> vsn = script->get_node(p_id);
 	if (!vsn.is_valid()) {
 		return;
 	}
@@ -1015,14 +993,12 @@ void VisualScriptEditor::_change_port_type(int p_select, int p_id, int p_port, b
 void VisualScriptEditor::_update_node_size(int p_id) {
 	Node *node = graph->get_node(itos(p_id));
 	if (Object::cast_to<Control>(node)) {
-		Object::cast_to<Control>(node)->set_size(Vector2(1, 1)); //shrink if text is smaller
+		Object::cast_to<Control>(node)->set_size(Vector2(1, 1)); // Shrink if text is smaller.
 	}
 }
 
 void VisualScriptEditor::_port_name_focus_out(const Node *p_name_box, int p_id, int p_port, bool is_input) {
-	StringName func = _get_function_of_node(p_id);
-
-	Ref<VisualScriptLists> vsn = script->get_node(func, p_id);
+	Ref<VisualScriptLists> vsn = script->get_node(p_id);
 	if (!vsn.is_valid()) {
 		return;
 	}
@@ -1063,11 +1039,8 @@ void VisualScriptEditor::_update_members() {
 
 	List<StringName> func_names;
 	script->get_function_list(&func_names);
+	func_names.sort_custom<StringName::AlphCompare>();
 	for (List<StringName>::Element *E = func_names.front(); E; E = E->next()) {
-		if (E->get() == default_func) {
-			continue;
-		}
-
 		TreeItem *ti = members->create_item(functions);
 		ti->set_text(0, E->get());
 		ti->set_selectable(0, true);
@@ -1200,7 +1173,7 @@ void VisualScriptEditor::_member_selected() {
 #endif
 		if (held_ctrl) {
 			ERR_FAIL_COND(!script->has_function(selected));
-			_center_on_node(selected, script->get_function_node_id(selected));
+			_center_on_node(script->get_function_node_id(selected));
 		}
 	}
 }
@@ -1243,8 +1216,8 @@ void VisualScriptEditor::_member_edited() {
 
 		int node_id = script->get_function_node_id(name);
 		Ref<VisualScriptFunction> func;
-		if (script->has_node(name, node_id)) {
-			func = script->get_node(name, node_id);
+		if (script->has_node(node_id)) {
+			func = script->get_node(node_id);
 		}
 		undo_redo->create_action(TTR("Rename Function"));
 		undo_redo->add_do_method(script.ptr(), "rename_function", name, new_name);
@@ -1254,21 +1227,17 @@ void VisualScriptEditor::_member_edited() {
 			undo_redo->add_undo_method(func.ptr(), "set_name", name);
 		}
 
-		// also fix all function calls
-		List<StringName> flst;
-		script->get_function_list(&flst);
-		for (List<StringName>::Element *E = flst.front(); E; E = E->next()) {
-			List<int> lst;
-			script->get_node_list(E->get(), &lst);
-			for (List<int>::Element *F = lst.front(); F; F = F->next()) {
-				Ref<VisualScriptFunctionCall> fncall = script->get_node(E->get(), F->get());
-				if (!fncall.is_valid()) {
-					continue;
-				}
-				if (fncall->get_function() == name) {
-					undo_redo->add_do_method(fncall.ptr(), "set_function", new_name);
-					undo_redo->add_undo_method(fncall.ptr(), "set_function", name);
-				}
+		// Also fix all function calls.
+		List<int> lst;
+		script->get_node_list(&lst);
+		for (List<int>::Element *F = lst.front(); F; F = F->next()) {
+			Ref<VisualScriptFunctionCall> fncall = script->get_node(F->get());
+			if (!fncall.is_valid()) {
+				continue;
+			}
+			if (fncall->get_function() == name) {
+				undo_redo->add_do_method(fncall.ptr(), "set_function", new_name);
+				undo_redo->add_undo_method(fncall.ptr(), "set_function", name);
 			}
 		}
 
@@ -1280,7 +1249,7 @@ void VisualScriptEditor::_member_edited() {
 		undo_redo->add_undo_method(this, "emit_signal", "edited_script_changed");
 		undo_redo->commit_action();
 
-		return; //or crash because it will become invalid
+		return; // Or crash because it will become invalid.
 	}
 
 	if (ti->get_parent() == root->get_children()->get_next()) {
@@ -1296,7 +1265,7 @@ void VisualScriptEditor::_member_edited() {
 		undo_redo->add_undo_method(this, "emit_signal", "edited_script_changed");
 		undo_redo->commit_action();
 
-		return; //or crash because it will become invalid
+		return; // Or crash because it will become invalid.
 	}
 
 	if (ti->get_parent() == root->get_children()->get_next()->get_next()) {
@@ -1310,7 +1279,7 @@ void VisualScriptEditor::_member_edited() {
 		undo_redo->add_undo_method(this, "emit_signal", "edited_script_changed");
 		undo_redo->commit_action();
 
-		return; //or crash because it will become invalid
+		return; // Or crash because it will become invalid.
 	}
 }
 
@@ -1344,10 +1313,13 @@ void VisualScriptEditor::_create_function() {
 		func_node->add_argument(arg_type, arg_name);
 	}
 
+	int func_node_id = script->get_available_id();
+
 	undo_redo->create_action(TTR("Add Function"));
-	undo_redo->add_do_method(script.ptr(), "add_function", name);
-	undo_redo->add_do_method(script.ptr(), "add_node", name, script->get_available_id(), func_node, ofs);
+	undo_redo->add_do_method(script.ptr(), "add_function", name, func_node_id);
 	undo_redo->add_undo_method(script.ptr(), "remove_function", name);
+	undo_redo->add_do_method(script.ptr(), "add_node", func_node_id, func_node, ofs);
+	undo_redo->add_undo_method(script.ptr(), "remove_node", func_node_id);
 	undo_redo->add_do_method(this, "_update_members");
 	undo_redo->add_undo_method(this, "_update_members");
 	undo_redo->add_do_method(this, "_update_graph");
@@ -1431,11 +1403,12 @@ void VisualScriptEditor::_member_button(Object *p_item, int p_column, int p_butt
 	if (ti->get_parent() == root) {
 		//main buttons
 		if (ti == root->get_children()) {
-			//add function, this one uses menu
+			// Add function, this one uses menu.
 
 			if (p_button == 1) {
+				// Ensure script base exists otherwise use custom base type.
+				ERR_FAIL_COND(script.is_null());
 				new_virtual_method_select->select_method_from_base_type(script->get_instance_base_type(), String(), true);
-
 				return;
 			} else if (p_button == 0) {
 				String name = _validate_name("new_function");
@@ -1445,11 +1418,13 @@ void VisualScriptEditor::_member_button(Object *p_item, int p_column, int p_butt
 				Ref<VisualScriptFunction> func_node;
 				func_node.instance();
 				func_node->set_name(name);
+				int fn_id = script->get_available_id();
 
 				undo_redo->create_action(TTR("Add Function"));
-				undo_redo->add_do_method(script.ptr(), "add_function", name);
-				undo_redo->add_do_method(script.ptr(), "add_node", name, script->get_available_id(), func_node, ofs);
+				undo_redo->add_do_method(script.ptr(), "add_function", name, fn_id);
+				undo_redo->add_do_method(script.ptr(), "add_node", fn_id, func_node, ofs);
 				undo_redo->add_undo_method(script.ptr(), "remove_function", name);
+				undo_redo->add_do_method(script.ptr(), "remove_node", fn_id);
 				undo_redo->add_do_method(this, "_update_members");
 				undo_redo->add_undo_method(this, "_update_members");
 				undo_redo->add_do_method(this, "_update_graph");
@@ -1461,11 +1436,11 @@ void VisualScriptEditor::_member_button(Object *p_item, int p_column, int p_butt
 				_update_graph();
 			}
 
-			return; //or crash because it will become invalid
+			return; // Or crash because it will become invalid.
 		}
 
 		if (ti == root->get_children()->get_next()) {
-			//add variable
+			// Add variable.
 			String name = _validate_name("new_variable");
 			selected = name;
 
@@ -1477,11 +1452,11 @@ void VisualScriptEditor::_member_button(Object *p_item, int p_column, int p_butt
 			undo_redo->add_do_method(this, "emit_signal", "edited_script_changed");
 			undo_redo->add_undo_method(this, "emit_signal", "edited_script_changed");
 			undo_redo->commit_action();
-			return; //or crash because it will become invalid
+			return; // Or crash because it will become invalid.
 		}
 
 		if (ti == root->get_children()->get_next()->get_next()) {
-			//add variable
+			// Add variable.
 			String name = _validate_name("new_signal");
 			selected = name;
 
@@ -1493,7 +1468,7 @@ void VisualScriptEditor::_member_button(Object *p_item, int p_column, int p_butt
 			undo_redo->add_do_method(this, "emit_signal", "edited_script_changed");
 			undo_redo->add_undo_method(this, "emit_signal", "edited_script_changed");
 			undo_redo->commit_action();
-			return; //or crash because it will become invalid
+			return; // Or crash because it will become invalid.
 		}
 	} else if (ti->get_parent() == root->get_children()) {
 		selected = ti->get_text(0);
@@ -1505,9 +1480,7 @@ void VisualScriptEditor::_member_button(Object *p_item, int p_column, int p_butt
 }
 
 void VisualScriptEditor::_add_input_port(int p_id) {
-	StringName func = _get_function_of_node(p_id);
-
-	Ref<VisualScriptLists> vsn = script->get_node(func, p_id);
+	Ref<VisualScriptLists> vsn = script->get_node(p_id);
 	if (!vsn.is_valid()) {
 		return;
 	}
@@ -1527,9 +1500,7 @@ void VisualScriptEditor::_add_input_port(int p_id) {
 }
 
 void VisualScriptEditor::_add_output_port(int p_id) {
-	StringName func = _get_function_of_node(p_id);
-
-	Ref<VisualScriptLists> vsn = script->get_node(func, p_id);
+	Ref<VisualScriptLists> vsn = script->get_node(p_id);
 	if (!vsn.is_valid()) {
 		return;
 	}
@@ -1549,9 +1520,7 @@ void VisualScriptEditor::_add_output_port(int p_id) {
 }
 
 void VisualScriptEditor::_remove_input_port(int p_id, int p_port) {
-	StringName func = _get_function_of_node(p_id);
-
-	Ref<VisualScriptLists> vsn = script->get_node(func, p_id);
+	Ref<VisualScriptLists> vsn = script->get_node(p_id);
 	if (!vsn.is_valid()) {
 		return;
 	}
@@ -1561,17 +1530,17 @@ void VisualScriptEditor::_remove_input_port(int p_id, int p_port) {
 	undo_redo->create_action(TTR("Remove Input Port"), UndoRedo::MERGE_ENDS);
 
 	int conn_from = -1, conn_port = -1;
-	script->get_input_value_port_connection_source(func, p_id, p_port, &conn_from, &conn_port);
+	script->get_input_value_port_connection_source(p_id, p_port, &conn_from, &conn_port);
 
 	if (conn_from != -1) {
-		undo_redo->add_do_method(script.ptr(), "data_disconnect", func, conn_from, conn_port, p_id, p_port);
+		undo_redo->add_do_method(script.ptr(), "data_disconnect", conn_from, conn_port, p_id, p_port);
 	}
 
 	undo_redo->add_do_method(vsn.ptr(), "remove_input_data_port", p_port);
 	undo_redo->add_do_method(this, "_update_graph", p_id);
 
 	if (conn_from != -1) {
-		undo_redo->add_undo_method(script.ptr(), "data_connect", func, conn_from, conn_port, p_id, p_port);
+		undo_redo->add_undo_method(script.ptr(), "data_connect", conn_from, conn_port, p_id, p_port);
 	}
 
 	undo_redo->add_undo_method(vsn.ptr(), "add_input_data_port", vsn->get_input_value_port_info(p_port).type, vsn->get_input_value_port_info(p_port).name, p_port);
@@ -1583,9 +1552,7 @@ void VisualScriptEditor::_remove_input_port(int p_id, int p_port) {
 }
 
 void VisualScriptEditor::_remove_output_port(int p_id, int p_port) {
-	StringName func = _get_function_of_node(p_id);
-
-	Ref<VisualScriptLists> vsn = script->get_node(func, p_id);
+	Ref<VisualScriptLists> vsn = script->get_node(p_id);
 	if (!vsn.is_valid()) {
 		return;
 	}
@@ -1595,12 +1562,12 @@ void VisualScriptEditor::_remove_output_port(int p_id, int p_port) {
 	undo_redo->create_action(TTR("Remove Output Port"), UndoRedo::MERGE_ENDS);
 
 	List<VisualScript::DataConnection> data_connections;
-	script->get_data_connection_list(func, &data_connections);
+	script->get_data_connection_list(&data_connections);
 
 	HashMap<int, Set<int>> conn_map;
 	for (const List<VisualScript::DataConnection>::Element *E = data_connections.front(); E; E = E->next()) {
 		if (E->get().from_node == p_id && E->get().from_port == p_port) {
-			// push into the connections map
+			// Push into the connections map.
 			if (!conn_map.has(E->get().to_node)) {
 				conn_map.set(E->get().to_node, Set<int>());
 			}
@@ -1615,7 +1582,7 @@ void VisualScriptEditor::_remove_output_port(int p_id, int p_port) {
 	conn_map.get_key_list(&keys);
 	for (const List<int>::Element *E = keys.front(); E; E = E->next()) {
 		for (const Set<int>::Element *F = conn_map[E->get()].front(); F; F = F->next()) {
-			undo_redo->add_undo_method(script.ptr(), "data_connect", func, p_id, p_port, E->get(), F->get());
+			undo_redo->add_undo_method(script.ptr(), "data_connect", p_id, p_port, E->get(), F->get());
 		}
 	}
 
@@ -1628,9 +1595,7 @@ void VisualScriptEditor::_remove_output_port(int p_id, int p_port) {
 }
 
 void VisualScriptEditor::_expression_text_changed(const String &p_text, int p_id) {
-	StringName func = _get_function_of_node(p_id);
-
-	Ref<VisualScriptExpression> vse = script->get_node(func, p_id);
+	Ref<VisualScriptExpression> vse = script->get_node(p_id);
 	if (!vse.is_valid()) {
 		return;
 	}
@@ -1646,7 +1611,7 @@ void VisualScriptEditor::_expression_text_changed(const String &p_text, int p_id
 
 	Node *node = graph->get_node(itos(p_id));
 	if (Object::cast_to<Control>(node)) {
-		Object::cast_to<Control>(node)->set_size(Vector2(1, 1)); //shrink if text is smaller
+		Object::cast_to<Control>(node)->set_size(Vector2(1, 1)); // Shrink if text is smaller.
 	}
 
 	updating_graph = false;
@@ -1666,19 +1631,14 @@ Vector2 VisualScriptEditor::_get_available_pos(bool centered, Vector2 ofs) const
 
 	while (true) {
 		bool exists = false;
-		List<StringName> all_fn;
-		script->get_function_list(&all_fn);
-		for (List<StringName>::Element *F = all_fn.front(); F; F = F->next()) {
-			StringName curr_fn = F->get();
-			List<int> existing;
-			script->get_node_list(curr_fn, &existing);
-			for (List<int>::Element *E = existing.front(); E; E = E->next()) {
-				Point2 pos = script->get_node_position(curr_fn, E->get());
-				if (pos.distance_to(ofs) < 50) {
-					ofs += Vector2(graph->get_snap(), graph->get_snap());
-					exists = true;
-					break;
-				}
+		List<int> existing;
+		script->get_node_list(&existing);
+		for (List<int>::Element *E = existing.front(); E; E = E->next()) {
+			Point2 pos = script->get_node_position(E->get());
+			if (pos.distance_to(ofs) < 50) {
+				ofs += Vector2(graph->get_snap(), graph->get_snap());
+				exists = true;
+				break;
 			}
 		}
 		if (exists) {
@@ -1710,7 +1670,7 @@ String VisualScriptEditor::_validate_name(const String &p_name) const {
 }
 
 void VisualScriptEditor::_on_nodes_delete() {
-	// delete all the selected nodes
+	// Delete all the selected nodes.
 
 	List<int> to_erase;
 
@@ -1732,26 +1692,24 @@ void VisualScriptEditor::_on_nodes_delete() {
 	for (List<int>::Element *F = to_erase.front(); F; F = F->next()) {
 		int cr_node = F->get();
 
-		StringName func = _get_function_of_node(cr_node);
-
-		undo_redo->add_do_method(script.ptr(), "remove_node", func, cr_node);
-		undo_redo->add_undo_method(script.ptr(), "add_node", func, cr_node, script->get_node(func, cr_node), script->get_node_position(func, cr_node));
+		undo_redo->add_do_method(script.ptr(), "remove_node", cr_node);
+		undo_redo->add_undo_method(script.ptr(), "add_node", cr_node, script->get_node(cr_node), script->get_node_position(cr_node));
 
 		List<VisualScript::SequenceConnection> sequence_conns;
-		script->get_sequence_connection_list(func, &sequence_conns);
+		script->get_sequence_connection_list(&sequence_conns);
 
 		for (List<VisualScript::SequenceConnection>::Element *E = sequence_conns.front(); E; E = E->next()) {
 			if (E->get().from_node == cr_node || E->get().to_node == cr_node) {
-				undo_redo->add_undo_method(script.ptr(), "sequence_connect", func, E->get().from_node, E->get().from_output, E->get().to_node);
+				undo_redo->add_undo_method(script.ptr(), "sequence_connect", E->get().from_node, E->get().from_output, E->get().to_node);
 			}
 		}
 
 		List<VisualScript::DataConnection> data_conns;
-		script->get_data_connection_list(func, &data_conns);
+		script->get_data_connection_list(&data_conns);
 
 		for (List<VisualScript::DataConnection>::Element *E = data_conns.front(); E; E = E->next()) {
 			if (E->get().from_node == F->get() || E->get().to_node == F->get()) {
-				undo_redo->add_undo_method(script.ptr(), "data_connect", func, E->get().from_node, E->get().from_port, E->get().to_node, E->get().to_port);
+				undo_redo->add_undo_method(script.ptr(), "data_connect", E->get().from_node, E->get().from_port, E->get().to_node, E->get().to_port);
 			}
 		}
 	}
@@ -1763,7 +1721,6 @@ void VisualScriptEditor::_on_nodes_delete() {
 
 void VisualScriptEditor::_on_nodes_duplicate() {
 	Set<int> to_duplicate;
-	List<StringName> funcs;
 
 	for (int i = 0; i < graph->get_child_count(); i++) {
 		GraphNode *gn = Object::cast_to<GraphNode>(graph->get_child(i));
@@ -1771,7 +1728,6 @@ void VisualScriptEditor::_on_nodes_duplicate() {
 			if (gn->is_selected() && gn->is_close_button_visible()) {
 				int id = gn->get_name().operator String().to_int();
 				to_duplicate.insert(id);
-				funcs.push_back(_get_function_of_node(id));
 			}
 		}
 	}
@@ -1787,9 +1743,8 @@ void VisualScriptEditor::_on_nodes_duplicate() {
 	HashMap<int, int> remap;
 
 	for (Set<int>::Element *F = to_duplicate.front(); F; F = F->next()) {
-		// duplicate from the specific function but place it into the default func as it would lack the connections
-		StringName func = _get_function_of_node(F->get());
-		Ref<VisualScriptNode> node = script->get_node(func, F->get());
+		// Duplicate from the specific function but place it into the default func as it would lack the connections.
+		Ref<VisualScriptNode> node = script->get_node(F->get());
 
 		Ref<VisualScriptNode> dupe = node->duplicate(true);
 
@@ -1797,25 +1752,23 @@ void VisualScriptEditor::_on_nodes_duplicate() {
 		remap.set(F->get(), new_id);
 
 		to_select.insert(new_id);
-		undo_redo->add_do_method(script.ptr(), "add_node", default_func, new_id, dupe, script->get_node_position(func, F->get()) + Vector2(20, 20));
-		undo_redo->add_undo_method(script.ptr(), "remove_node", default_func, new_id);
+		undo_redo->add_do_method(script.ptr(), "add_node", new_id, dupe, script->get_node_position(F->get()) + Vector2(20, 20));
+		undo_redo->add_undo_method(script.ptr(), "remove_node", new_id);
 	}
 
-	for (List<StringName>::Element *F = funcs.front(); F; F = F->next()) {
-		List<VisualScript::SequenceConnection> seqs;
-		script->get_sequence_connection_list(F->get(), &seqs);
-		for (List<VisualScript::SequenceConnection>::Element *E = seqs.front(); E; E = E->next()) {
-			if (to_duplicate.has(E->get().from_node) && to_duplicate.has(E->get().to_node)) {
-				undo_redo->add_do_method(script.ptr(), "sequence_connect", default_func, remap[E->get().from_node], E->get().from_output, remap[E->get().to_node]);
-			}
+	List<VisualScript::SequenceConnection> seqs;
+	script->get_sequence_connection_list(&seqs);
+	for (List<VisualScript::SequenceConnection>::Element *E = seqs.front(); E; E = E->next()) {
+		if (to_duplicate.has(E->get().from_node) && to_duplicate.has(E->get().to_node)) {
+			undo_redo->add_do_method(script.ptr(), "sequence_connect", remap[E->get().from_node], E->get().from_output, remap[E->get().to_node]);
 		}
+	}
 
-		List<VisualScript::DataConnection> data;
-		script->get_data_connection_list(F->get(), &data);
-		for (List<VisualScript::DataConnection>::Element *E = data.front(); E; E = E->next()) {
-			if (to_duplicate.has(E->get().from_node) && to_duplicate.has(E->get().to_node)) {
-				undo_redo->add_do_method(script.ptr(), "data_connect", default_func, remap[E->get().from_node], E->get().from_port, remap[E->get().to_node], E->get().to_port);
-			}
+	List<VisualScript::DataConnection> data;
+	script->get_data_connection_list(&data);
+	for (List<VisualScript::DataConnection>::Element *E = data.front(); E; E = E->next()) {
+		if (to_duplicate.has(E->get().from_node) && to_duplicate.has(E->get().to_node)) {
+			undo_redo->add_do_method(script.ptr(), "data_connect", remap[E->get().from_node], E->get().from_port, remap[E->get().to_node], E->get().to_port);
 		}
 	}
 
@@ -1833,7 +1786,7 @@ void VisualScriptEditor::_on_nodes_duplicate() {
 	}
 
 	if (to_select.size()) {
-		EditorNode::get_singleton()->push_item(script->get_node(default_func, to_select.front()->get()).ptr());
+		EditorNode::get_singleton()->push_item(script->get_node(to_select.front()->get()).ptr());
 	}
 }
 
@@ -1846,7 +1799,7 @@ void VisualScriptEditor::_generic_search(String p_base_type, Vector2 pos, bool n
 
 	new_connect_node_select->select_from_visual_script(p_base_type, false, false); // neither connecting nor reset text
 
-	// ensure that the dialog fits inside the graph
+	// Ensure that the dialog fits inside the graph.
 	Size2 bounds = graph->get_global_position() + graph->get_size() - new_connect_node_select->get_size();
 	pos.x = pos.x > bounds.x ? bounds.x : pos.x;
 	pos.y = pos.y > bounds.y ? bounds.y : pos.y;
@@ -1907,7 +1860,7 @@ void VisualScriptEditor::_members_gui_input(const Ref<InputEvent> &p_event) {
 	if (btn.is_valid() && btn->is_doubleclick()) {
 		TreeItem *ti = members->get_selected();
 		if (ti && ti->get_parent() == members->get_root()->get_children()) { // to check if it's a function
-			_center_on_node(ti->get_metadata(0), script->get_function_node_id(ti->get_metadata(0)));
+			_center_on_node(script->get_function_node_id(ti->get_metadata(0)));
 		}
 	}
 }
@@ -1925,8 +1878,8 @@ void VisualScriptEditor::_rename_function(const String &name, const String &new_
 
 	int node_id = script->get_function_node_id(name);
 	Ref<VisualScriptFunction> func;
-	if (script->has_node(name, node_id)) {
-		func = script->get_node(name, node_id);
+	if (script->has_node(node_id)) {
+		func = script->get_node(node_id);
 	}
 	undo_redo->create_action(TTR("Rename Function"));
 	undo_redo->add_do_method(script.ptr(), "rename_function", name, new_name);
@@ -1936,21 +1889,17 @@ void VisualScriptEditor::_rename_function(const String &name, const String &new_
 		undo_redo->add_undo_method(func.ptr(), "set_name", name);
 	}
 
-	// also fix all function calls
-	List<StringName> flst;
-	script->get_function_list(&flst);
-	for (List<StringName>::Element *E = flst.front(); E; E = E->next()) {
-		List<int> lst;
-		script->get_node_list(E->get(), &lst);
-		for (List<int>::Element *F = lst.front(); F; F = F->next()) {
-			Ref<VisualScriptFunctionCall> fncall = script->get_node(E->get(), F->get());
-			if (!fncall.is_valid()) {
-				continue;
-			}
-			if (fncall->get_function() == name) {
-				undo_redo->add_do_method(fncall.ptr(), "set_function", new_name);
-				undo_redo->add_undo_method(fncall.ptr(), "set_function", name);
-			}
+	// Also fix all function calls.
+	List<int> lst;
+	script->get_node_list(&lst);
+	for (List<int>::Element *F = lst.front(); F; F = F->next()) {
+		Ref<VisualScriptFunctionCall> fncall = script->get_node(F->get());
+		if (!fncall.is_valid()) {
+			continue;
+		}
+		if (fncall->get_function() == name) {
+			undo_redo->add_do_method(fncall.ptr(), "set_function", new_name);
+			undo_redo->add_undo_method(fncall.ptr(), "set_function", name);
 		}
 	}
 
@@ -2103,7 +2052,7 @@ void VisualScriptEditor::drop_data_fw(const Point2 &p_point, const Variant &p_da
 
 		ofs /= EDSCALE;
 
-		int new_id = _create_new_node_from_name(d["node_type"], ofs, default_func);
+		int new_id = _create_new_node_from_name(d["node_type"], ofs);
 
 		Node *node = graph->get_node(itos(new_id));
 		if (node) {
@@ -2142,8 +2091,8 @@ void VisualScriptEditor::drop_data_fw(const Point2 &p_point, const Variant &p_da
 		int new_id = script->get_available_id();
 
 		undo_redo->create_action(TTR("Add Node"));
-		undo_redo->add_do_method(script.ptr(), "add_node", default_func, new_id, vnode, ofs);
-		undo_redo->add_undo_method(script.ptr(), "remove_node", default_func, new_id);
+		undo_redo->add_do_method(script.ptr(), "add_node", new_id, vnode, ofs);
+		undo_redo->add_undo_method(script.ptr(), "remove_node", new_id);
 		undo_redo->add_do_method(this, "_update_graph");
 		undo_redo->add_undo_method(this, "_update_graph");
 		undo_redo->commit_action();
@@ -2171,11 +2120,11 @@ void VisualScriptEditor::drop_data_fw(const Point2 &p_point, const Variant &p_da
 		int new_id = script->get_available_id();
 
 		undo_redo->create_action(TTR("Add Node"));
-		undo_redo->add_do_method(script.ptr(), "add_node", default_func, new_id, vnode, ofs);
+		undo_redo->add_do_method(script.ptr(), "add_node", new_id, vnode, ofs);
 		undo_redo->add_do_method(vnode.ptr(), "set_base_type", script->get_instance_base_type());
 		undo_redo->add_do_method(vnode.ptr(), "set_function", d["function"]);
 
-		undo_redo->add_undo_method(script.ptr(), "remove_node", default_func, new_id);
+		undo_redo->add_undo_method(script.ptr(), "remove_node", new_id);
 		undo_redo->add_do_method(this, "_update_graph");
 		undo_redo->add_undo_method(this, "_update_graph");
 		undo_redo->commit_action();
@@ -2203,8 +2152,8 @@ void VisualScriptEditor::drop_data_fw(const Point2 &p_point, const Variant &p_da
 		int new_id = script->get_available_id();
 
 		undo_redo->create_action(TTR("Add Node"));
-		undo_redo->add_do_method(script.ptr(), "add_node", default_func, new_id, vnode, ofs);
-		undo_redo->add_undo_method(script.ptr(), "remove_node", default_func, new_id);
+		undo_redo->add_do_method(script.ptr(), "add_node", new_id, vnode, ofs);
+		undo_redo->add_undo_method(script.ptr(), "remove_node", new_id);
 		undo_redo->add_do_method(this, "_update_graph");
 		undo_redo->add_undo_method(this, "_update_graph");
 		undo_redo->commit_action();
@@ -2232,8 +2181,8 @@ void VisualScriptEditor::drop_data_fw(const Point2 &p_point, const Variant &p_da
 		int new_id = script->get_available_id();
 
 		undo_redo->create_action(TTR("Add Preload Node"));
-		undo_redo->add_do_method(script.ptr(), "add_node", default_func, new_id, prnode, ofs);
-		undo_redo->add_undo_method(script.ptr(), "remove_node", default_func, new_id);
+		undo_redo->add_do_method(script.ptr(), "add_node", new_id, prnode, ofs);
+		undo_redo->add_undo_method(script.ptr(), "remove_node", new_id);
 		undo_redo->add_do_method(this, "_update_graph");
 		undo_redo->add_undo_method(this, "_update_graph");
 		undo_redo->commit_action();
@@ -2272,8 +2221,8 @@ void VisualScriptEditor::drop_data_fw(const Point2 &p_point, const Variant &p_da
 				prnode.instance();
 				prnode->set_preload(res);
 
-				undo_redo->add_do_method(script.ptr(), "add_node", default_func, new_id, prnode, ofs);
-				undo_redo->add_undo_method(script.ptr(), "remove_node", default_func, new_id);
+				undo_redo->add_do_method(script.ptr(), "add_node", new_id, prnode, ofs);
+				undo_redo->add_undo_method(script.ptr(), "remove_node", new_id);
 				new_ids.push_back(new_id);
 				new_id++;
 				ofs += Vector2(20, 20) * EDSCALE;
@@ -2339,7 +2288,7 @@ void VisualScriptEditor::drop_data_fw(const Point2 &p_point, const Variant &p_da
 				scene_node->set_node_path(sn->get_path_to(node));
 				n = scene_node;
 			} else {
-				// ! Doesn't work properly
+				// ! Doesn't work properly.
 				Ref<VisualScriptFunctionCall> call;
 				call.instance();
 				call->set_call_mode(VisualScriptFunctionCall::CALL_MODE_NODE_PATH);
@@ -2350,8 +2299,8 @@ void VisualScriptEditor::drop_data_fw(const Point2 &p_point, const Variant &p_da
 				selecting_method_id = base_id;
 			}
 
-			undo_redo->add_do_method(script.ptr(), "add_node", default_func, base_id, n, ofs);
-			undo_redo->add_undo_method(script.ptr(), "remove_node", default_func, base_id);
+			undo_redo->add_do_method(script.ptr(), "add_node", base_id, n, ofs);
+			undo_redo->add_undo_method(script.ptr(), "remove_node", base_id);
 
 			base_id++;
 			ofs += Vector2(25, 25);
@@ -2420,13 +2369,13 @@ void VisualScriptEditor::drop_data_fw(const Point2 &p_point, const Variant &p_da
 				vnode = pget;
 			}
 
-			undo_redo->add_do_method(script.ptr(), "add_node", default_func, base_id, vnode, ofs);
+			undo_redo->add_do_method(script.ptr(), "add_node", base_id, vnode, ofs);
 			undo_redo->add_do_method(vnode.ptr(), "set_property", d["property"]);
 			if (!use_get) {
 				undo_redo->add_do_method(vnode.ptr(), "set_default_input_value", 0, d["value"]);
 			}
 
-			undo_redo->add_undo_method(script.ptr(), "remove_node", default_func, base_id);
+			undo_redo->add_undo_method(script.ptr(), "remove_node", base_id);
 
 			undo_redo->add_do_method(this, "_update_graph");
 			undo_redo->add_undo_method(this, "_update_graph");
@@ -2465,12 +2414,12 @@ void VisualScriptEditor::drop_data_fw(const Point2 &p_point, const Variant &p_da
 				}
 				vnode = pget;
 			}
-			undo_redo->add_do_method(script.ptr(), "add_node", default_func, base_id, vnode, ofs);
+			undo_redo->add_do_method(script.ptr(), "add_node", base_id, vnode, ofs);
 			undo_redo->add_do_method(vnode.ptr(), "set_property", d["property"]);
 			if (!use_get) {
 				undo_redo->add_do_method(vnode.ptr(), "set_default_input_value", 0, d["value"]);
 			}
-			undo_redo->add_undo_method(script.ptr(), "remove_node", default_func, base_id);
+			undo_redo->add_undo_method(script.ptr(), "remove_node", base_id);
 
 			undo_redo->add_do_method(this, "_update_graph");
 			undo_redo->add_undo_method(this, "_update_graph");
@@ -2480,7 +2429,7 @@ void VisualScriptEditor::drop_data_fw(const Point2 &p_point, const Variant &p_da
 }
 
 void VisualScriptEditor::_selected_method(const String &p_method, const String &p_type, const bool p_connecting) {
-	Ref<VisualScriptFunctionCall> vsfc = script->get_node(default_func, selecting_method_id);
+	Ref<VisualScriptFunctionCall> vsfc = script->get_node(selecting_method_id);
 	if (!vsfc.is_valid()) {
 		return;
 	}
@@ -2538,14 +2487,6 @@ void VisualScriptEditor::set_edited_resource(const RES &p_res) {
 
 	script->connect("node_ports_changed", callable_mp(this, &VisualScriptEditor::_node_ports_changed));
 
-	default_func = script->get_default_func();
-
-	if (!script->has_function(default_func)) // this is the supposed default function
-	{
-		script->add_function(default_func);
-		script->set_edited(true); //so that if a function was added it's saved
-	}
-
 	_update_graph();
 	call_deferred("_update_members");
 }
@@ -2594,7 +2535,6 @@ bool VisualScriptEditor::is_unsaved() {
 
 Variant VisualScriptEditor::get_edit_state() {
 	Dictionary d;
-	d["function"] = default_func;
 	d["scroll"] = graph->get_scroll_ofs();
 	d["zoom"] = graph->get_zoom();
 	d["using_snap"] = graph->is_using_snap();
@@ -2604,9 +2544,6 @@ Variant VisualScriptEditor::get_edit_state() {
 
 void VisualScriptEditor::set_edit_state(const Variant &p_state) {
 	Dictionary d = p_state;
-	if (d.has("function")) {
-		selected = default_func;
-	}
 
 	_update_graph();
 	_update_members();
@@ -2625,11 +2562,11 @@ void VisualScriptEditor::set_edit_state(const Variant &p_state) {
 	}
 }
 
-void VisualScriptEditor::_center_on_node(const StringName &p_func, int p_id) {
+void VisualScriptEditor::_center_on_node(int p_id) {
 	Node *n = graph->get_node(itos(p_id));
 	GraphNode *gn = Object::cast_to<GraphNode>(n);
 
-	// clear selection
+	// Clear selection.
 	for (int i = 0; i < graph->get_child_count(); i++) {
 		GraphNode *gnd = Object::cast_to<GraphNode>(graph->get_child(i));
 		if (gnd) {
@@ -2641,13 +2578,13 @@ void VisualScriptEditor::_center_on_node(const StringName &p_func, int p_id) {
 		gn->set_selected(true);
 		Vector2 new_scroll = gn->get_position_offset() - graph->get_size() * 0.5 + gn->get_size() * 0.5;
 		graph->set_scroll_ofs(new_scroll);
-		script->set_function_scroll(p_func, new_scroll / EDSCALE);
+		script->set_scroll(new_scroll / EDSCALE);
 		script->set_edited(true);
 	}
 }
 
 void VisualScriptEditor::goto_line(int p_line, bool p_with_error) {
-	p_line += 1; //add one because script lines begin from 0.
+	p_line += 1; // Add one because script lines begin from 0.
 
 	if (p_with_error) {
 		error_line = p_line;
@@ -2656,7 +2593,7 @@ void VisualScriptEditor::goto_line(int p_line, bool p_with_error) {
 	List<StringName> functions;
 	script->get_function_list(&functions);
 	for (List<StringName>::Element *E = functions.front(); E; E = E->next()) {
-		if (script->has_node(E->get(), p_line)) {
+		if (script->has_node(p_line)) {
 			_update_graph();
 			_update_members();
 
@@ -2703,11 +2640,11 @@ Array VisualScriptEditor::get_breakpoints() {
 	script->get_function_list(&functions);
 	for (List<StringName>::Element *E = functions.front(); E; E = E->next()) {
 		List<int> nodes;
-		script->get_node_list(E->get(), &nodes);
+		script->get_node_list(&nodes);
 		for (List<int>::Element *F = nodes.front(); F; F = F->next()) {
-			Ref<VisualScriptNode> vsn = script->get_node(E->get(), F->get());
+			Ref<VisualScriptNode> vsn = script->get_node(F->get());
 			if (vsn->is_breakpoint()) {
-				breakpoints.push_back(F->get() - 1); //subtract 1 because breakpoints in text start from zero
+				breakpoints.push_back(F->get() - 1); // Subtract 1 because breakpoints in text start from zero.
 			}
 		}
 	}
@@ -2718,7 +2655,7 @@ void VisualScriptEditor::add_callback(const String &p_function, PackedStringArra
 	if (script->has_function(p_function)) {
 		_update_members();
 		_update_graph();
-		_center_on_node(p_function, script->get_function_node_id(p_function));
+		_center_on_node(script->get_function_node_id(p_function));
 		return;
 	}
 
@@ -2742,15 +2679,15 @@ void VisualScriptEditor::add_callback(const String &p_function, PackedStringArra
 
 		func->add_argument(type, name);
 	}
-
+	int fn_id = script->get_available_id();
 	func->set_name(p_function);
-	script->add_function(p_function);
-	script->add_node(p_function, script->get_available_id(), func);
+	script->add_function(p_function, fn_id);
+	script->add_node(fn_id, func);
 
 	_update_members();
 	_update_graph();
 
-	_center_on_node(p_function, script->get_function_node_id(p_function));
+	_center_on_node(script->get_function_node_id(p_function));
 }
 
 bool VisualScriptEditor::show_members_overview() {
@@ -2844,8 +2781,8 @@ void VisualScriptEditor::_end_node_move() {
 	undo_redo->commit_action();
 }
 
-void VisualScriptEditor::_move_node(const StringName &p_func, int p_id, const Vector2 &p_to) {
-	if (!script->has_function(p_func)) {
+void VisualScriptEditor::_move_node(int p_id, const Vector2 &p_to) {
+	if (!script->has_node(p_id)) {
 		return;
 	}
 
@@ -2855,51 +2792,35 @@ void VisualScriptEditor::_move_node(const StringName &p_func, int p_id, const Ve
 		Object::cast_to<GraphNode>(node)->set_position_offset(p_to);
 	}
 
-	script->set_node_position(p_func, p_id, p_to / EDSCALE);
-}
-
-StringName VisualScriptEditor::_get_function_of_node(int p_id) const {
-	List<StringName> funcs;
-	script->get_function_list(&funcs);
-	for (List<StringName>::Element *E = funcs.front(); E; E = E->next()) {
-		if (script->has_node(E->get(), p_id)) {
-			return E->get();
-		}
-	}
-
-	return ""; // this is passed to avoid crash and is tested against later
+	script->set_node_position(p_id, p_to / EDSCALE);
 }
 
 void VisualScriptEditor::_node_moved(Vector2 p_from, Vector2 p_to, int p_id) {
-	StringName func = _get_function_of_node(p_id);
-
-	undo_redo->add_do_method(this, "_move_node", func, p_id, p_to);
-	undo_redo->add_undo_method(this, "_move_node", func, p_id, p_from);
+	undo_redo->add_do_method(this, "_move_node", p_id, p_to);
+	undo_redo->add_undo_method(this, "_move_node", p_id, p_from);
 }
 
 void VisualScriptEditor::_remove_node(int p_id) {
 	undo_redo->create_action(TTR("Remove VisualScript Node"));
 
-	StringName func = _get_function_of_node(p_id);
-
-	undo_redo->add_do_method(script.ptr(), "remove_node", func, p_id);
-	undo_redo->add_undo_method(script.ptr(), "add_node", func, p_id, script->get_node(func, p_id), script->get_node_position(func, p_id));
+	undo_redo->add_do_method(script.ptr(), "remove_node", p_id);
+	undo_redo->add_undo_method(script.ptr(), "add_node", p_id, script->get_node(p_id), script->get_node_position(p_id));
 
 	List<VisualScript::SequenceConnection> sequence_conns;
-	script->get_sequence_connection_list(func, &sequence_conns);
+	script->get_sequence_connection_list(&sequence_conns);
 
 	for (List<VisualScript::SequenceConnection>::Element *E = sequence_conns.front(); E; E = E->next()) {
 		if (E->get().from_node == p_id || E->get().to_node == p_id) {
-			undo_redo->add_undo_method(script.ptr(), "sequence_connect", func, E->get().from_node, E->get().from_output, E->get().to_node);
+			undo_redo->add_undo_method(script.ptr(), "sequence_connect", E->get().from_node, E->get().from_output, E->get().to_node);
 		}
 	}
 
 	List<VisualScript::DataConnection> data_conns;
-	script->get_data_connection_list(func, &data_conns);
+	script->get_data_connection_list(&data_conns);
 
 	for (List<VisualScript::DataConnection>::Element *E = data_conns.front(); E; E = E->next()) {
 		if (E->get().from_node == p_id || E->get().to_node == p_id) {
-			undo_redo->add_undo_method(script.ptr(), "data_connect", func, E->get().from_node, E->get().from_port, E->get().to_node, E->get().to_port);
+			undo_redo->add_undo_method(script.ptr(), "data_connect", E->get().from_node, E->get().from_port, E->get().to_node, E->get().to_port);
 		}
 	}
 
@@ -2909,13 +2830,13 @@ void VisualScriptEditor::_remove_node(int p_id) {
 	undo_redo->commit_action();
 }
 
-void VisualScriptEditor::_node_ports_changed(const String &p_func, int p_id) {
+void VisualScriptEditor::_node_ports_changed(int p_id) {
 	_update_graph(p_id);
 }
 
-bool VisualScriptEditor::node_has_sequence_connections(const StringName &p_func, int p_id) {
+bool VisualScriptEditor::node_has_sequence_connections(int p_id) {
 	List<VisualScript::SequenceConnection> sequence_conns;
-	script->get_sequence_connection_list(p_func, &sequence_conns);
+	script->get_sequence_connection_list(&sequence_conns);
 
 	for (List<VisualScript::SequenceConnection>::Element *E = sequence_conns.front(); E; E = E->next()) {
 		int from = E->get().from_node;
@@ -2930,9 +2851,7 @@ bool VisualScriptEditor::node_has_sequence_connections(const StringName &p_func,
 }
 
 void VisualScriptEditor::_graph_connected(const String &p_from, int p_from_slot, const String &p_to, int p_to_slot) {
-	StringName from_func = _get_function_of_node(p_from.to_int());
-
-	Ref<VisualScriptNode> from_node = script->get_node(from_func, p_from.to_int());
+	Ref<VisualScriptNode> from_node = script->get_node(p_from.to_int());
 	ERR_FAIL_COND(!from_node.is_valid());
 
 	bool from_seq;
@@ -2942,9 +2861,7 @@ void VisualScriptEditor::_graph_connected(const String &p_from, int p_from_slot,
 		return; //can't connect this, it's invalid
 	}
 
-	StringName to_func = _get_function_of_node(p_to.to_int());
-
-	Ref<VisualScriptNode> to_node = script->get_node(to_func, p_to.to_int());
+	Ref<VisualScriptNode> to_node = script->get_node(p_to.to_int());
 	ERR_FAIL_COND(!to_node.is_valid());
 
 	bool to_seq;
@@ -2956,56 +2873,23 @@ void VisualScriptEditor::_graph_connected(const String &p_from, int p_from_slot,
 
 	ERR_FAIL_COND(from_seq != to_seq);
 
-	// Do all the checks here
-	StringName func; // this the func where we store the one the nodes at the end of the resolution on having multiple nodes
+	// Do all the checks here.
+	StringName func; // This the func where we store the one the nodes at the end of the resolution on having multiple nodes.
 
 	undo_redo->create_action(TTR("Connect Nodes"));
 
-	if (from_func == to_func) {
-		func = to_func;
-	} else if (from_seq) {
-		// this is a sequence connection
-		_move_nodes_with_rescan(to_func, from_func, p_to.to_int()); // this function moves the nodes from func1 to func2
-		func = from_func;
-	} else {
-		if (node_has_sequence_connections(to_func, p_to.to_int())) {
-			if (node_has_sequence_connections(from_func, p_from.to_int())) {
-				ERR_PRINT("Trying to connect between different sequence node trees");
-				return;
-			} else {
-				_move_nodes_with_rescan(from_func, to_func, p_from.to_int());
-				func = to_func;
-			}
-		} else if (node_has_sequence_connections(from_func, p_from.to_int())) {
-			if (from_func == default_func) {
-				_move_nodes_with_rescan(from_func, to_func, p_from.to_int());
-				func = to_func;
-			} else {
-				_move_nodes_with_rescan(to_func, from_func, p_to.to_int());
-				func = from_func;
-			}
-		} else {
-			if (to_func == default_func) {
-				_move_nodes_with_rescan(to_func, from_func, p_to.to_int());
-				func = from_func;
-			} else {
-				_move_nodes_with_rescan(from_func, to_func, p_from.to_int());
-				func = to_func;
-			}
-		}
-	}
-
 	if (from_seq) {
-		undo_redo->add_do_method(script.ptr(), "sequence_connect", func, p_from.to_int(), from_port, p_to.to_int());
-		// this undo error on undo after move can't be removed without painful gymnastics
-		undo_redo->add_undo_method(script.ptr(), "sequence_disconnect", func, p_from.to_int(), from_port, p_to.to_int());
+		undo_redo->add_do_method(script.ptr(), "sequence_connect", p_from.to_int(), from_port, p_to.to_int());
+		// This undo error on undo after move can't be removed without painful gymnastics
+		undo_redo->add_undo_method(script.ptr(), "sequence_disconnect", p_from.to_int(), from_port, p_to.to_int());
+		undo_redo->add_do_method(this, "_update_graph");
+		undo_redo->add_undo_method(this, "_update_graph");
 	} else {
 		bool converted = false;
-		int conv_node = -1;
 
 		Ref<VisualScriptOperator> oper = to_node;
 		if (oper.is_valid() && oper->get_typed() == Variant::NIL) {
-			// it's an operator Node and if the type is already nil
+			// It's an operator Node and if the type is already nil
 			if (from_node->get_output_value_port_info(from_port).type != Variant::NIL) {
 				oper->set_typed(from_node->get_output_value_port_info(from_port).type);
 			}
@@ -3013,106 +2897,36 @@ void VisualScriptEditor::_graph_connected(const String &p_from, int p_from_slot,
 
 		Ref<VisualScriptOperator> operf = from_node;
 		if (operf.is_valid() && operf->get_typed() == Variant::NIL) {
-			// it's an operator Node and if the type is already nil
+			// It's an operator Node and if the type is already nil
 			if (to_node->get_input_value_port_info(to_port).type != Variant::NIL) {
 				operf->set_typed(to_node->get_input_value_port_info(to_port).type);
 			}
 		}
 
-		Variant::Type to_type = to_node->get_input_value_port_info(to_port).type;
-		Variant::Type from_type = from_node->get_output_value_port_info(from_port).type;
-
-		if (to_type != Variant::NIL && from_type != Variant::NIL && to_type != from_type) {
-			// add a constructor node between the ports
-			bool exceptions = false; // true if there are any exceptions
-			exceptions = exceptions || (to_type == Variant::INT && from_type == Variant::FLOAT);
-			exceptions = exceptions || (to_type == Variant::FLOAT && from_type == Variant::INT);
-			if (Variant::can_convert(from_type, to_type) && !exceptions) {
-				MethodInfo mi;
-				mi.name = Variant::get_type_name(to_type);
-				PropertyInfo pi;
-				pi.name = "from";
-				pi.type = from_type;
-				mi.arguments.push_back(pi);
-				mi.return_val.type = to_type;
-				// we know that this is allowed so create a new constructor node
-				Ref<VisualScriptConstructor> constructor;
-				constructor.instance();
-				constructor->set_constructor_type(to_type);
-				constructor->set_constructor(mi);
-				// add the new constructor node
-
-				GraphNode *gn = Object::cast_to<GraphNode>(graph->get_node(p_from));
-				GraphNode *gn2 = Object::cast_to<GraphNode>(graph->get_node(p_to));
-				if (gn && gn2) {
-					Vector2 from_node_size = gn->get_rect().get_size();
-					Vector2 to_node_size = gn2->get_rect().get_size();
-					Vector2 to_node_pos = script->get_node_position(func, p_to.to_int());
-					Vector2 from_node_pos = script->get_node_position(func, p_from.to_int());
-					Vector2 new_to_node_pos = from_node_pos;
-					Vector2 constructor_pos;
-					if ((to_node_pos.x - from_node_pos.x) < 0) {
-						// to is behind from node
-						if (to_node_pos.x > (from_node_pos.x - to_node_size.x - 240)) {
-							new_to_node_pos.x = from_node_pos.x - to_node_size.x - 240; // approx size of constructor node + padding
-						} else {
-							new_to_node_pos.x = to_node_pos.x;
-						}
-						new_to_node_pos.y = to_node_pos.y;
-						constructor_pos.x = from_node_pos.x - 210;
-						constructor_pos.y = to_node_pos.y;
-					} else {
-						// to is ahead of from node
-						if (to_node_pos.x < (from_node_size.x + from_node_pos.x + 240)) {
-							new_to_node_pos.x = from_node_size.x + from_node_pos.x + 240; // approx size of constructor node + padding
-						} else {
-							new_to_node_pos.x = to_node_pos.x;
-						}
-						new_to_node_pos.y = to_node_pos.y;
-						constructor_pos.x = from_node_size.x + from_node_pos.x + 10;
-						constructor_pos.y = to_node_pos.y;
-					}
-					undo_redo->add_do_method(this, "_move_node", func, p_to.to_int(), new_to_node_pos);
-					undo_redo->add_undo_method(this, "_move_node", func, p_to.to_int(), to_node_pos);
-					conv_node = script->get_available_id();
-					undo_redo->add_do_method(script.ptr(), "add_node", func, conv_node, constructor, _get_available_pos(false, constructor_pos));
-					undo_redo->add_undo_method(script.ptr(), "remove_node", func, conv_node);
-					converted = true;
-				}
-			}
-		}
-
-		// disconnect current, and connect the new one
-		if (script->is_input_value_port_connected(func, p_to.to_int(), to_port)) {
+		// Disconnect current, and connect the new one
+		if (script->is_input_value_port_connected(p_to.to_int(), to_port)) {
 			if (can_swap && data_disconnect_node == p_to.to_int()) {
 				int conn_from;
 				int conn_port;
-				script->get_input_value_port_connection_source(func, p_to.to_int(), to_port, &conn_from, &conn_port);
-				undo_redo->add_do_method(script.ptr(), "data_disconnect", func, conn_from, conn_port, p_to.to_int(), to_port);
-				undo_redo->add_do_method(script.ptr(), "data_connect", func, conn_from, conn_port, data_disconnect_node, data_disconnect_port);
-				undo_redo->add_undo_method(script.ptr(), "data_disconnect", func, conn_from, conn_port, data_disconnect_node, data_disconnect_port);
-				undo_redo->add_undo_method(script.ptr(), "data_connect", func, conn_from, conn_port, p_to.to_int(), to_port);
+				script->get_input_value_port_connection_source(p_to.to_int(), to_port, &conn_from, &conn_port);
+				undo_redo->add_do_method(script.ptr(), "data_disconnect", conn_from, conn_port, p_to.to_int(), to_port);
+				undo_redo->add_do_method(script.ptr(), "data_connect", conn_from, conn_port, data_disconnect_node, data_disconnect_port);
+				undo_redo->add_undo_method(script.ptr(), "data_disconnect", conn_from, conn_port, data_disconnect_node, data_disconnect_port);
+				undo_redo->add_undo_method(script.ptr(), "data_connect", conn_from, conn_port, p_to.to_int(), to_port);
 				can_swap = false; // swapped
 			} else {
 				int conn_from;
 				int conn_port;
-				script->get_input_value_port_connection_source(func, p_to.to_int(), to_port, &conn_from, &conn_port);
-				undo_redo->add_do_method(script.ptr(), "data_disconnect", func, conn_from, conn_port, p_to.to_int(), to_port);
-				undo_redo->add_undo_method(script.ptr(), "data_connect", func, conn_from, conn_port, p_to.to_int(), to_port);
+				script->get_input_value_port_connection_source(p_to.to_int(), to_port, &conn_from, &conn_port);
+				undo_redo->add_do_method(script.ptr(), "data_disconnect", conn_from, conn_port, p_to.to_int(), to_port);
+				undo_redo->add_undo_method(script.ptr(), "data_connect", conn_from, conn_port, p_to.to_int(), to_port);
 			}
 		}
 		if (!converted) {
-			undo_redo->add_do_method(script.ptr(), "data_connect", func, p_from.to_int(), from_port, p_to.to_int(), to_port);
-			undo_redo->add_undo_method(script.ptr(), "data_disconnect", func, p_from.to_int(), from_port, p_to.to_int(), to_port);
-		} else {
-			// this is noice
-			undo_redo->add_do_method(script.ptr(), "data_connect", func, p_from.to_int(), from_port, conv_node, 0);
-			undo_redo->add_do_method(script.ptr(), "data_connect", func, conv_node, 0, p_to.to_int(), to_port);
-			// I don't think this is needed but gonna leave it here for now... until I need to finalise it all
-			undo_redo->add_undo_method(script.ptr(), "data_disconnect", func, p_from.to_int(), from_port, conv_node, 0);
-			undo_redo->add_undo_method(script.ptr(), "data_disconnect", func, conv_node, 0, p_to.to_int(), to_port);
+			undo_redo->add_do_method(script.ptr(), "data_connect", p_from.to_int(), from_port, p_to.to_int(), to_port);
+			undo_redo->add_undo_method(script.ptr(), "data_disconnect", p_from.to_int(), from_port, p_to.to_int(), to_port);
 		}
-		//update nodes in graph
+		// Update nodes in graph
 		if (!converted) {
 			undo_redo->add_do_method(this, "_update_graph", p_from.to_int());
 			undo_redo->add_do_method(this, "_update_graph", p_to.to_int());
@@ -3124,34 +2938,28 @@ void VisualScriptEditor::_graph_connected(const String &p_from, int p_from_slot,
 		}
 	}
 
-	undo_redo->add_do_method(this, "_update_graph_connections");
-	undo_redo->add_undo_method(this, "_update_graph_connections");
-
 	undo_redo->commit_action();
 }
 
 void VisualScriptEditor::_graph_disconnected(const String &p_from, int p_from_slot, const String &p_to, int p_to_slot) {
-	StringName func = _get_function_of_node(p_from.to_int());
-	ERR_FAIL_COND(func != _get_function_of_node(p_to.to_int()));
-
-	Ref<VisualScriptNode> from_node = script->get_node(func, p_from.to_int());
+	Ref<VisualScriptNode> from_node = script->get_node(p_from.to_int());
 	ERR_FAIL_COND(!from_node.is_valid());
 
 	bool from_seq;
 	int from_port;
 
 	if (!_get_out_slot(from_node, p_from_slot, from_port, from_seq)) {
-		return; //can't connect this, it's invalid
+		return; // Can't connect this, it's invalid.
 	}
 
-	Ref<VisualScriptNode> to_node = script->get_node(func, p_to.to_int());
+	Ref<VisualScriptNode> to_node = script->get_node(p_to.to_int());
 	ERR_FAIL_COND(!to_node.is_valid());
 
 	bool to_seq;
 	int to_port;
 
 	if (!_get_in_slot(to_node, p_to_slot, to_port, to_seq)) {
-		return; //can't connect this, it's invalid
+		return; // Can't connect this, it's invalid.
 	}
 
 	ERR_FAIL_COND(from_seq != to_seq);
@@ -3159,248 +2967,27 @@ void VisualScriptEditor::_graph_disconnected(const String &p_from, int p_from_sl
 	undo_redo->create_action(TTR("Disconnect Nodes"));
 
 	if (from_seq) {
-		undo_redo->add_do_method(script.ptr(), "sequence_disconnect", func, p_from.to_int(), from_port, p_to.to_int());
-		undo_redo->add_undo_method(script.ptr(), "sequence_connect", func, p_from.to_int(), from_port, p_to.to_int());
+		undo_redo->add_do_method(script.ptr(), "sequence_disconnect", p_from.to_int(), from_port, p_to.to_int());
+		undo_redo->add_undo_method(script.ptr(), "sequence_connect", p_from.to_int(), from_port, p_to.to_int());
+		undo_redo->add_do_method(this, "_update_graph");
+		undo_redo->add_undo_method(this, "_update_graph");
 	} else {
 		can_swap = true;
 		data_disconnect_node = p_to.to_int();
 		data_disconnect_port = to_port;
 
-		undo_redo->add_do_method(script.ptr(), "data_disconnect", func, p_from.to_int(), from_port, p_to.to_int(), to_port);
-		undo_redo->add_undo_method(script.ptr(), "data_connect", func, p_from.to_int(), from_port, p_to.to_int(), to_port);
-		//update relevant nodes in the graph
+		undo_redo->add_do_method(script.ptr(), "data_disconnect", p_from.to_int(), from_port, p_to.to_int(), to_port);
+		undo_redo->add_undo_method(script.ptr(), "data_connect", p_from.to_int(), from_port, p_to.to_int(), to_port);
+		// Update relevant nodes in the graph.
 		undo_redo->add_do_method(this, "_update_graph", p_from.to_int());
 		undo_redo->add_do_method(this, "_update_graph", p_to.to_int());
 		undo_redo->add_undo_method(this, "_update_graph", p_from.to_int());
 		undo_redo->add_undo_method(this, "_update_graph", p_to.to_int());
 	}
-	undo_redo->add_do_method(this, "_update_graph_connections");
-	undo_redo->add_undo_method(this, "_update_graph_connections");
 
 	undo_redo->commit_action();
 }
 
-void VisualScriptEditor::_move_nodes_with_rescan(const StringName &p_func_from, const StringName &p_func_to, int p_id) {
-	Set<int> nodes_to_move;
-	HashMap<int, Map<int, int>> seqconns_to_move; // from => List(outp, to)
-	HashMap<int, Map<int, Pair<int, int>>> dataconns_to_move; // to => List(inp_p => from, outp)
-
-	nodes_to_move.insert(p_id);
-	Set<int> sequence_connections;
-	{
-		List<VisualScript::SequenceConnection> sequence_conns;
-		script->get_sequence_connection_list(p_func_from, &sequence_conns);
-
-		HashMap<int, Map<int, int>> seqcons; // from => List(out_p => to)
-
-		for (List<VisualScript::SequenceConnection>::Element *E = sequence_conns.front(); E; E = E->next()) {
-			int from = E->get().from_node;
-			int to = E->get().to_node;
-			int out_p = E->get().from_output;
-			if (!seqcons.has(from)) {
-				seqcons.set(from, Map<int, int>());
-			}
-			seqcons[from].insert(out_p, to);
-			sequence_connections.insert(to);
-			sequence_connections.insert(from);
-		}
-
-		int conn = p_id;
-		List<int> stack;
-		HashMap<int, Set<int>> seen; // from, outp
-		while (seqcons.has(conn)) {
-			for (auto E = seqcons[conn].front(); E; E = E->next()) {
-				if (seen.has(conn) && seen[conn].has(E->key())) {
-					if (!E->next()) {
-						if (stack.size() > 0) {
-							conn = stack.back()->get();
-							stack.pop_back();
-							break;
-						}
-						conn = -101;
-						break;
-					}
-					continue;
-				}
-				if (!seen.has(conn)) {
-					seen.set(conn, Set<int>());
-				}
-				seen[conn].insert(E->key());
-				stack.push_back(conn);
-				if (!seqconns_to_move.has(conn)) {
-					seqconns_to_move.set(conn, Map<int, int>());
-				}
-				seqconns_to_move[conn].insert(E->key(), E->get());
-				conn = E->get();
-				nodes_to_move.insert(conn);
-				break;
-			}
-			if (!seqcons.has(conn) && stack.size() > 0) {
-				conn = stack.back()->get();
-				stack.pop_back();
-			}
-		}
-	}
-
-	{
-		List<VisualScript::DataConnection> data_connections;
-		script->get_data_connection_list(p_func_from, &data_connections);
-		int func_from_node_id = script->get_function_node_id(p_func_from);
-
-		HashMap<int, Map<int, Pair<int, int>>> connections;
-
-		for (List<VisualScript::DataConnection>::Element *E = data_connections.front(); E; E = E->next()) {
-			int from = E->get().from_node;
-			int to = E->get().to_node;
-			int out_p = E->get().from_port;
-			int in_p = E->get().to_port;
-
-			// skip if the from_node is a function node
-			if (from == func_from_node_id) {
-				continue;
-			}
-
-			if (!connections.has(to)) {
-				connections.set(to, Map<int, Pair<int, int>>());
-			}
-			connections[to].insert(in_p, Pair<int, int>(from, out_p));
-		}
-
-		// go through the HashMap and do all sorts of crazy ass stuff now...
-		Set<int> nodes_to_be_added;
-		for (Set<int>::Element *F = nodes_to_move.front(); F; F = F->next()) {
-			HashMap<int, Set<int>> seen;
-			List<int> stack;
-			int id = F->get();
-			while (connections.has(id)) {
-				for (auto E = connections[id].front(); E; E = E->next()) {
-					if (seen.has(id) && seen[id].has(E->key())) {
-						if (!E->next()) {
-							if (stack.size() > 0) {
-								id = stack.back()->get();
-								stack.pop_back();
-								break;
-							}
-							id = -11; // I assume ids can't be negative should confirm it...
-							break;
-						}
-						continue;
-					}
-
-					if (sequence_connections.has(E->get().first)) {
-						if (!nodes_to_move.has(E->get().first)) {
-							if (stack.size() > 0) {
-								id = stack.back()->get();
-								stack.pop_back();
-								break;
-							}
-							id = -11; // I assume ids can't be negative should confirm it...
-							break;
-						}
-					}
-
-					if (!seen.has(id)) {
-						seen.set(id, Set<int>());
-					}
-					seen[id].insert(E->key());
-					stack.push_back(id);
-					if (!dataconns_to_move.has(id)) {
-						dataconns_to_move.set(id, Map<int, Pair<int, int>>());
-					}
-					dataconns_to_move[id].insert(E->key(), Pair<int, int>(E->get().first, E->get().second));
-					id = E->get().first;
-					nodes_to_be_added.insert(id);
-					break;
-				}
-				if (!connections.has(id) && stack.size() > 0) {
-					id = stack.back()->get();
-					stack.pop_back();
-				}
-			}
-		}
-		for (Set<int>::Element *E = nodes_to_be_added.front(); E; E = E->next()) {
-			nodes_to_move.insert(E->get());
-		}
-	}
-
-	// * this is primarily for the sake of the having proper undo
-	List<VisualScript::SequenceConnection> seqext;
-	List<VisualScript::DataConnection> dataext;
-
-	List<VisualScript::SequenceConnection> seq_connections;
-	script->get_sequence_connection_list(p_func_from, &seq_connections);
-
-	for (List<VisualScript::SequenceConnection>::Element *E = seq_connections.front(); E; E = E->next()) {
-		if (!nodes_to_move.has(E->get().from_node) && nodes_to_move.has(E->get().to_node)) {
-			seqext.push_back(E->get());
-		} else if (nodes_to_move.has(E->get().from_node) && !nodes_to_move.has(E->get().to_node)) {
-			seqext.push_back(E->get());
-		}
-	}
-
-	List<VisualScript::DataConnection> data_connections;
-	script->get_data_connection_list(p_func_from, &data_connections);
-
-	for (List<VisualScript::DataConnection>::Element *E = data_connections.front(); E; E = E->next()) {
-		if (!nodes_to_move.has(E->get().from_node) && nodes_to_move.has(E->get().to_node)) {
-			dataext.push_back(E->get());
-		} else if (nodes_to_move.has(E->get().from_node) && !nodes_to_move.has(E->get().to_node)) {
-			dataext.push_back(E->get());
-		}
-	}
-
-	// undo_redo->create_action("Rescan Functions");
-
-	for (Set<int>::Element *E = nodes_to_move.front(); E; E = E->next()) {
-		int id = E->get();
-
-		undo_redo->add_do_method(script.ptr(), "remove_node", p_func_from, id);
-		undo_redo->add_do_method(script.ptr(), "add_node", p_func_to, id, script->get_node(p_func_from, id), script->get_node_position(p_func_from, id));
-
-		undo_redo->add_undo_method(script.ptr(), "remove_node", p_func_to, id);
-		undo_redo->add_undo_method(script.ptr(), "add_node", p_func_from, id, script->get_node(p_func_from, id), script->get_node_position(p_func_from, id));
-	}
-
-	List<int> skeys;
-	seqconns_to_move.get_key_list(&skeys);
-	for (List<int>::Element *E = skeys.front(); E; E = E->next()) {
-		int from_node = E->get();
-		for (Map<int, int>::Element *F = seqconns_to_move[from_node].front(); F; F = F->next()) {
-			int from_port = F->key();
-			int to_node = F->get();
-			undo_redo->add_do_method(script.ptr(), "sequence_connect", p_func_to, from_node, from_port, to_node);
-			undo_redo->add_undo_method(script.ptr(), "sequence_connect", p_func_from, from_node, from_port, to_node);
-		}
-	}
-
-	List<int> keys;
-	dataconns_to_move.get_key_list(&keys);
-	for (List<int>::Element *E = keys.front(); E; E = E->next()) {
-		int to_node = E->get(); // to_node
-		for (Map<int, Pair<int, int>>::Element *F = dataconns_to_move[E->get()].front(); F; F = F->next()) {
-			int inp_p = F->key();
-			Pair<int, int> fro = F->get();
-
-			undo_redo->add_do_method(script.ptr(), "data_connect", p_func_to, fro.first, fro.second, to_node, inp_p);
-			undo_redo->add_undo_method(script.ptr(), "data_connect", p_func_from, fro.first, fro.second, to_node, inp_p);
-		}
-	}
-
-	// this to have proper undo operations
-	for (List<VisualScript::SequenceConnection>::Element *E = seqext.front(); E; E = E->next()) {
-		undo_redo->add_undo_method(script.ptr(), "sequence_connect", p_func_from, E->get().from_node, E->get().from_output, E->get().to_node);
-	}
-	for (List<VisualScript::DataConnection>::Element *E = dataext.front(); E; E = E->next()) {
-		undo_redo->add_undo_method(script.ptr(), "data_connect", p_func_from, E->get().from_node, E->get().from_port, E->get().to_node, E->get().to_port);
-	}
-	// this doesn't need do methods as they are handled by the subsequent do calls implicitly
-
-	undo_redo->add_do_method(this, "_update_graph");
-	undo_redo->add_undo_method(this, "_update_graph");
-
-	// undo_redo->commit_action();
-}
-
 void VisualScriptEditor::_graph_connect_to_empty(const String &p_from, int p_from_slot, const Vector2 &p_release_pos) {
 	Node *node = graph->get_node(p_from);
 	GraphNode *gn = Object::cast_to<GraphNode>(node);
@@ -3408,23 +2995,22 @@ void VisualScriptEditor::_graph_connect_to_empty(const String &p_from, int p_fro
 		return;
 	}
 
-	StringName func = _get_function_of_node(p_from.to_int());
-
-	Ref<VisualScriptNode> vsn = script->get_node(func, p_from.to_int());
+	Ref<VisualScriptNode> vsn = script->get_node(p_from.to_int());
 	if (!vsn.is_valid()) {
 		return;
 	}
+	if (vsn->get_output_value_port_count())
 
-	port_action_pos = p_release_pos;
+		port_action_pos = p_release_pos;
 
 	if (p_from_slot < vsn->get_output_sequence_port_count()) {
 		port_action_node = p_from.to_int();
 		port_action_output = p_from_slot;
-		_port_action_menu(CREATE_ACTION, func);
+		_port_action_menu(CREATE_ACTION);
 	} else {
 		port_action_output = p_from_slot - vsn->get_output_sequence_port_count();
 		port_action_node = p_from.to_int();
-		_port_action_menu(CREATE_CALL_SET_GET, func);
+		_port_action_menu(CREATE_CALL_SET_GET);
 	}
 }
 
@@ -3438,9 +3024,7 @@ VisualScriptNode::TypeGuess VisualScriptEditor::_guess_output_type(int p_port_ac
 
 	visited_nodes.insert(p_port_action_node);
 
-	StringName func = _get_function_of_node(p_port_action_node);
-
-	Ref<VisualScriptNode> node = script->get_node(func, p_port_action_node);
+	Ref<VisualScriptNode> node = script->get_node(p_port_action_node);
 
 	if (!node.is_valid()) {
 		return tg;
@@ -3454,11 +3038,11 @@ VisualScriptNode::TypeGuess VisualScriptEditor::_guess_output_type(int p_port_ac
 		g.type = pi.type;
 
 		if (g.type == Variant::NIL || g.type == Variant::OBJECT) {
-			//any or object input, must further guess what this is
+			// Any or object input, must further guess what this is.
 			int from_node;
 			int from_port;
 
-			if (script->get_input_value_port_connection_source(func, p_port_action_node, i, &from_node, &from_port)) {
+			if (script->get_input_value_port_connection_source(p_port_action_node, i, &from_node, &from_port)) {
 				g = _guess_output_type(from_node, from_port, visited_nodes);
 			} else {
 				Variant defval = node->get_default_input_value(i);
@@ -3480,7 +3064,7 @@ VisualScriptNode::TypeGuess VisualScriptEditor::_guess_output_type(int p_port_ac
 	return node->guess_output_type(in_guesses.ptrw(), p_port_action_output);
 }
 
-void VisualScriptEditor::_port_action_menu(int p_option, const StringName &func) {
+void VisualScriptEditor::_port_action_menu(int p_option) {
 	Vector2 ofs = graph->get_scroll_ofs() + port_action_pos;
 	if (graph->is_using_snap()) {
 		int snap = graph->get_snap();
@@ -3503,8 +3087,8 @@ void VisualScriptEditor::_port_action_menu(int p_option, const StringName &func)
 				n->set_base_type("Object");
 			}
 			String type_string;
-			if (script->get_node(func, port_action_node)->get_output_value_port_count() > 0) {
-				type_string = script->get_node(func, port_action_node)->get_output_value_port_info(port_action_output).hint_string;
+			if (script->get_node(port_action_node)->get_output_value_port_count() > 0) {
+				type_string = script->get_node(port_action_node)->get_output_value_port_info(port_action_output).hint_string;
 			}
 			if (tg.type == Variant::OBJECT) {
 				if (tg.script.is_valid()) {
@@ -3519,7 +3103,7 @@ void VisualScriptEditor::_port_action_menu(int p_option, const StringName &func)
 			} else {
 				new_connect_node_select->select_from_basic_type(tg.type);
 			}
-			// ensure that the dialog fits inside the graph
+			// Ensure that the dialog fits inside the graph.
 			Vector2 pos = mouse_up_position;
 			Size2 bounds = graph->get_global_position() + graph->get_size() - new_connect_node_select->get_size();
 			pos.x = pos.x > bounds.x ? bounds.x : pos.x;
@@ -3529,8 +3113,8 @@ void VisualScriptEditor::_port_action_menu(int p_option, const StringName &func)
 		case CREATE_ACTION: {
 			VisualScriptNode::TypeGuess tg = _guess_output_type(port_action_node, port_action_output, vn);
 			PropertyInfo property_info;
-			if (script->get_node(func, port_action_node)->get_output_value_port_count() > 0) {
-				property_info = script->get_node(func, port_action_node)->get_output_value_port_info(port_action_output);
+			if (script->get_node(port_action_node)->get_output_value_port_count() > 0) {
+				property_info = script->get_node(port_action_node)->get_output_value_port_info(port_action_output);
 			}
 			if (tg.type == Variant::OBJECT) {
 				if (property_info.type == Variant::OBJECT && property_info.hint_string != String()) {
@@ -3543,7 +3127,7 @@ void VisualScriptEditor::_port_action_menu(int p_option, const StringName &func)
 			} else {
 				new_connect_node_select->select_from_action(Variant::get_type_name(tg.type));
 			}
-			// ensure that the dialog fits inside the graph
+			// Ensure that the dialog fits inside the graph.
 			Vector2 pos = mouse_up_position;
 			Size2 bounds = graph->get_global_position() + graph->get_size() - new_connect_node_select->get_size();
 			pos.x = pos.x > bounds.x ? bounds.x : pos.x;
@@ -3572,9 +3156,8 @@ void VisualScriptEditor::connect_data(Ref<VisualScriptNode> vnode_old, Ref<Visua
 	if (port >= value_count) {
 		port = 0;
 	}
-	StringName func = _get_function_of_node(port_action_node);
-	undo_redo->add_do_method(script.ptr(), "data_connect", func, port_action_node, port, new_id, 0);
-	undo_redo->add_undo_method(script.ptr(), "data_disconnect", func, port_action_node, port, new_id, 0);
+	undo_redo->add_do_method(script.ptr(), "data_connect", port_action_node, port, new_id, 0);
+	undo_redo->add_undo_method(script.ptr(), "data_disconnect", port_action_node, port, new_id, 0);
 	undo_redo->commit_action();
 }
 
@@ -3591,17 +3174,16 @@ void VisualScriptEditor::_selected_connect_node(const String &p_text, const Stri
 
 	bool port_node_exists = true;
 
-	StringName func = _get_function_of_node(port_action_node);
-	if (func == StringName()) {
-		func = default_func;
-		port_node_exists = false;
-	}
+	// if (func == StringName()) {
+	// 	func = default_func;
+	// 	port_node_exists = false;
+	// }
 
 	if (p_category == "visualscript") {
 		Ref<VisualScriptNode> vnode_new = VisualScriptLanguage::singleton->create_node_from_name(p_text);
 		Ref<VisualScriptNode> vnode_old;
-		if (port_node_exists) {
-			vnode_old = script->get_node(func, port_action_node);
+		if (port_node_exists && p_connecting) {
+			vnode_old = script->get_node(port_action_node);
 		}
 		int new_id = script->get_available_id();
 
@@ -3624,13 +3206,13 @@ void VisualScriptEditor::_selected_connect_node(const String &p_text, const Stri
 		}
 
 		undo_redo->create_action(TTR("Add Node"));
-		undo_redo->add_do_method(script.ptr(), "add_node", func, new_id, vnode_new, ofs);
+		undo_redo->add_do_method(script.ptr(), "add_node", new_id, vnode_new, ofs);
 		if (vnode_old.is_valid() && p_connecting) {
 			connect_seq(vnode_old, vnode_new, new_id);
 			connect_data(vnode_old, vnode_new, new_id);
 		}
 
-		undo_redo->add_undo_method(script.ptr(), "remove_node", func, new_id);
+		undo_redo->add_undo_method(script.ptr(), "remove_node", new_id);
 		undo_redo->add_do_method(this, "_update_graph");
 		undo_redo->add_undo_method(this, "_update_graph");
 		undo_redo->commit_action();
@@ -3687,8 +3269,8 @@ void VisualScriptEditor::_selected_connect_node(const String &p_text, const Stri
 
 	int new_id = script->get_available_id();
 	undo_redo->create_action(TTR("Add Node"));
-	undo_redo->add_do_method(script.ptr(), "add_node", func, new_id, vnode, ofs);
-	undo_redo->add_undo_method(script.ptr(), "remove_node", func, new_id);
+	undo_redo->add_do_method(script.ptr(), "add_node", new_id, vnode, ofs);
+	undo_redo->add_undo_method(script.ptr(), "remove_node", new_id);
 	undo_redo->add_do_method(this, "_update_graph", new_id);
 	undo_redo->add_undo_method(this, "_update_graph", new_id);
 	undo_redo->commit_action();
@@ -3699,7 +3281,7 @@ void VisualScriptEditor::_selected_connect_node(const String &p_text, const Stri
 
 	port_action_new_node = new_id;
 
-	Ref<VisualScriptNode> vsn = script->get_node(func, port_action_new_node);
+	Ref<VisualScriptNode> vsn = script->get_node(port_action_new_node);
 
 	if (Object::cast_to<VisualScriptFunctionCall>(vsn.ptr())) {
 		Ref<VisualScriptFunctionCall> vsfc = vsn;
@@ -3713,10 +3295,9 @@ void VisualScriptEditor::_selected_connect_node(const String &p_text, const Stri
 				vsfc->set_base_type(String(""));
 				if (tg.gdclass != StringName()) {
 					vsfc->set_base_type(tg.gdclass);
-
-				} else if (script->get_node(func, port_action_node).is_valid()) {
-					PropertyHint hint = script->get_node(func, port_action_node)->get_output_value_port_info(port_action_output).hint;
-					String base_type = script->get_node(func, port_action_node)->get_output_value_port_info(port_action_output).hint_string;
+				} else if (script->get_node(port_action_node).is_valid()) {
+					PropertyHint hint = script->get_node(port_action_node)->get_output_value_port_info(port_action_output).hint;
+					String base_type = script->get_node(port_action_node)->get_output_value_port_info(port_action_output).hint_string;
 
 					if (base_type != String() && hint == PROPERTY_HINT_TYPE_STRING) {
 						vsfc->set_base_type(base_type);
@@ -3749,9 +3330,9 @@ void VisualScriptEditor::_selected_connect_node(const String &p_text, const Stri
 				if (tg.gdclass != StringName()) {
 					vsp->set_base_type(tg.gdclass);
 
-				} else if (script->get_node(func, port_action_node).is_valid()) {
-					PropertyHint hint = script->get_node(func, port_action_node)->get_output_value_port_info(port_action_output).hint;
-					String base_type = script->get_node(func, port_action_node)->get_output_value_port_info(port_action_output).hint_string;
+				} else if (script->get_node(port_action_node).is_valid()) {
+					PropertyHint hint = script->get_node(port_action_node)->get_output_value_port_info(port_action_output).hint;
+					String base_type = script->get_node(port_action_node)->get_output_value_port_info(port_action_output).hint_string;
 
 					if (base_type != String() && hint == PROPERTY_HINT_TYPE_STRING) {
 						vsp->set_base_type(base_type);
@@ -3779,9 +3360,9 @@ void VisualScriptEditor::_selected_connect_node(const String &p_text, const Stri
 				if (tg.gdclass != StringName()) {
 					vsp->set_base_type(tg.gdclass);
 
-				} else if (script->get_node(func, port_action_node).is_valid()) {
-					PropertyHint hint = script->get_node(func, port_action_node)->get_output_value_port_info(port_action_output).hint;
-					String base_type = script->get_node(func, port_action_node)->get_output_value_port_info(port_action_output).hint_string;
+				} else if (script->get_node(port_action_node).is_valid()) {
+					PropertyHint hint = script->get_node(port_action_node)->get_output_value_port_info(port_action_output).hint;
+					String base_type = script->get_node(port_action_node)->get_output_value_port_info(port_action_output).hint_string;
 					if (base_type != String() && hint == PROPERTY_HINT_TYPE_STRING) {
 						vsp->set_base_type(base_type);
 					}
@@ -3799,16 +3380,13 @@ void VisualScriptEditor::_selected_connect_node(const String &p_text, const Stri
 		}
 	}
 	if (port_node_exists) {
-		Ref<VisualScriptNode> vnode_old = script->get_node(func, port_action_node);
+		Ref<VisualScriptNode> vnode_old = script->get_node(port_action_node);
 		if (vnode_old.is_valid() && p_connecting) {
 			connect_seq(vnode_old, vnode, port_action_new_node);
 			connect_data(vnode_old, vnode, port_action_new_node);
 		}
 	}
 	_update_graph(port_action_new_node);
-	if (port_node_exists) {
-		_update_graph_connections();
-	}
 }
 
 void VisualScriptEditor::connect_seq(Ref<VisualScriptNode> vnode_old, Ref<VisualScriptNode> vnode_new, int new_id) {
@@ -3827,29 +3405,27 @@ void VisualScriptEditor::connect_seq(Ref<VisualScriptNode> vnode_old, Ref<Visual
 		return;
 	}
 
-	StringName func = _get_function_of_node(port_action_node);
-
 	undo_redo->create_action(TTR("Connect Node Sequence"));
 	int pass_port = -vnode_old->get_output_sequence_port_count() + 1;
 	int return_port = port_action_output - 1;
 	if (vnode_old->get_output_value_port_info(port_action_output).name == String("pass") &&
-			!script->get_output_sequence_ports_connected(func, port_action_node).has(pass_port)) {
-		undo_redo->add_do_method(script.ptr(), "sequence_connect", func, port_action_node, pass_port, new_id);
-		undo_redo->add_undo_method(script.ptr(), "sequence_disconnect", func, port_action_node, pass_port, new_id);
+			!script->get_output_sequence_ports_connected(port_action_node).has(pass_port)) {
+		undo_redo->add_do_method(script.ptr(), "sequence_connect", port_action_node, pass_port, new_id);
+		undo_redo->add_undo_method(script.ptr(), "sequence_disconnect", port_action_node, pass_port, new_id);
 	} else if (vnode_old->get_output_value_port_info(port_action_output).name == String("return") &&
-			   !script->get_output_sequence_ports_connected(func, port_action_node).has(return_port)) {
-		undo_redo->add_do_method(script.ptr(), "sequence_connect", func, port_action_node, return_port, new_id);
-		undo_redo->add_undo_method(script.ptr(), "sequence_disconnect", func, port_action_node, return_port, new_id);
+			   !script->get_output_sequence_ports_connected(port_action_node).has(return_port)) {
+		undo_redo->add_do_method(script.ptr(), "sequence_connect", port_action_node, return_port, new_id);
+		undo_redo->add_undo_method(script.ptr(), "sequence_disconnect", port_action_node, return_port, new_id);
 	} else {
 		for (int port = 0; port < vnode_old->get_output_sequence_port_count(); port++) {
 			int count = vnode_old->get_output_sequence_port_count();
-			if (port_action_output < count && !script->get_output_sequence_ports_connected(func, port_action_node).has(port_action_output)) {
-				undo_redo->add_do_method(script.ptr(), "sequence_connect", func, port_action_node, port_action_output, new_id);
-				undo_redo->add_undo_method(script.ptr(), "sequence_disconnect", func, port_action_node, port_action_output, new_id);
+			if (port_action_output < count && !script->get_output_sequence_ports_connected(port_action_node).has(port_action_output)) {
+				undo_redo->add_do_method(script.ptr(), "sequence_connect", port_action_node, port_action_output, new_id);
+				undo_redo->add_undo_method(script.ptr(), "sequence_disconnect", port_action_node, port_action_output, new_id);
 				break;
-			} else if (!script->get_output_sequence_ports_connected(func, port_action_node).has(port)) {
-				undo_redo->add_do_method(script.ptr(), "sequence_connect", func, port_action_node, port, new_id);
-				undo_redo->add_undo_method(script.ptr(), "sequence_disconnect", func, port_action_node, port, new_id);
+			} else if (!script->get_output_sequence_ports_connected(port_action_node).has(port)) {
+				undo_redo->add_do_method(script.ptr(), "sequence_connect", port_action_node, port, new_id);
+				undo_redo->add_undo_method(script.ptr(), "sequence_disconnect", port_action_node, port, new_id);
 				break;
 			}
 		}
@@ -3884,9 +3460,9 @@ void VisualScriptEditor::_selected_new_virtual_method(const String &p_text, cons
 	Ref<VisualScriptFunction> func_node;
 	func_node.instance();
 	func_node->set_name(name);
-
+	int fn_id = script->get_available_id();
 	undo_redo->create_action(TTR("Add Function"));
-	undo_redo->add_do_method(script.ptr(), "add_function", name);
+	undo_redo->add_do_method(script.ptr(), "add_function", name, fn_id);
 
 	for (int i = 0; i < minfo.arguments.size(); i++) {
 		func_node->add_argument(minfo.arguments[i].type, minfo.arguments[i].name, -1, minfo.arguments[i].hint, minfo.arguments[i].hint_string);
@@ -3894,14 +3470,17 @@ void VisualScriptEditor::_selected_new_virtual_method(const String &p_text, cons
 
 	Vector2 ofs = _get_available_pos();
 
-	undo_redo->add_do_method(script.ptr(), "add_node", name, script->get_available_id(), func_node, ofs);
+	undo_redo->add_do_method(script.ptr(), "add_node", fn_id, func_node, ofs);
+	undo_redo->add_undo_method(script.ptr(), "remove_node", fn_id);
 	if (minfo.return_val.type != Variant::NIL || minfo.return_val.usage & PROPERTY_USAGE_NIL_IS_VARIANT) {
 		Ref<VisualScriptReturn> ret_node;
 		ret_node.instance();
 		ret_node->set_return_type(minfo.return_val.type);
 		ret_node->set_enable_return_value(true);
 		ret_node->set_name(name);
-		undo_redo->add_do_method(script.ptr(), "add_node", name, script->get_available_id() + 1, ret_node, _get_available_pos(false, ofs + Vector2(500, 0)));
+		int nid = script->get_available_id() + 1;
+		undo_redo->add_do_method(script.ptr(), "add_node", nid, ret_node, _get_available_pos(false, ofs + Vector2(500, 0)));
+		undo_redo->add_undo_method(script.ptr(), "remove_node", nid);
 	}
 
 	undo_redo->add_undo_method(script.ptr(), "remove_function", name);
@@ -3916,21 +3495,16 @@ void VisualScriptEditor::_selected_new_virtual_method(const String &p_text, cons
 }
 
 void VisualScriptEditor::_cancel_connect_node() {
-	// ensure the cancel is done
+	// Ensure the cancel is done.
 	port_action_new_node = -1;
 }
 
-int VisualScriptEditor::_create_new_node_from_name(const String &p_text, const Vector2 &p_point, const StringName &p_func) {
-	StringName func = default_func;
-	if (p_func != StringName()) {
-		func = p_func;
-	}
-
+int VisualScriptEditor::_create_new_node_from_name(const String &p_text, const Vector2 &p_point) {
 	Ref<VisualScriptNode> vnode = VisualScriptLanguage::singleton->create_node_from_name(p_text);
 	int new_id = script->get_available_id();
 	undo_redo->create_action(TTR("Add Node"));
-	undo_redo->add_do_method(script.ptr(), "add_node", func, new_id, vnode, p_point);
-	undo_redo->add_undo_method(script.ptr(), "remove_node", func, new_id);
+	undo_redo->add_do_method(script.ptr(), "add_node", new_id, vnode, p_point);
+	undo_redo->add_undo_method(script.ptr(), "remove_node", new_id);
 	undo_redo->add_do_method(this, "_update_graph");
 	undo_redo->add_undo_method(this, "_update_graph");
 	undo_redo->commit_action();
@@ -3938,7 +3512,7 @@ int VisualScriptEditor::_create_new_node_from_name(const String &p_text, const V
 }
 
 void VisualScriptEditor::_default_value_changed() {
-	Ref<VisualScriptNode> vsn = script->get_node(_get_function_of_node(editing_id), editing_id);
+	Ref<VisualScriptNode> vsn = script->get_node(editing_id);
 	if (vsn.is_null()) {
 		return;
 	}
@@ -3953,7 +3527,7 @@ void VisualScriptEditor::_default_value_changed() {
 }
 
 void VisualScriptEditor::_default_value_edited(Node *p_button, int p_id, int p_input_port) {
-	Ref<VisualScriptNode> vsn = script->get_node(_get_function_of_node(p_id), p_id);
+	Ref<VisualScriptNode> vsn = script->get_node(p_id);
 	if (vsn.is_null()) {
 		return;
 	}
@@ -3972,15 +3546,15 @@ void VisualScriptEditor::_default_value_edited(Node *p_button, int p_id, int p_i
 
 	if (pinfo.type == Variant::NODE_PATH) {
 		Node *edited_scene = get_tree()->get_edited_scene_root();
-		if (edited_scene) { // Fixing an old crash bug ( Visual Script Crashes on editing NodePath with an empty scene open)
+		if (edited_scene) { // Fixing an old crash bug ( Visual Script Crashes on editing NodePath with an empty scene open).
 			Node *script_node = _find_script_node(edited_scene, edited_scene, script);
 
 			if (script_node) {
-				//pick a node relative to the script, IF the script exists
+				// Pick a node relative to the script, IF the script exists.
 				pinfo.hint = PROPERTY_HINT_NODE_PATH_TO_EDITED_NODE;
 				pinfo.hint_string = script_node->get_path();
 			} else {
-				//pick a path relative to edited scene
+				// Pick a path relative to edited scene.
 				pinfo.hint = PROPERTY_HINT_NODE_PATH_TO_EDITED_NODE;
 				pinfo.hint_string = get_tree()->get_edited_scene_root()->get_path();
 			}
@@ -4078,11 +3652,8 @@ void VisualScriptEditor::_graph_ofs_changed(const Vector2 &p_ofs) {
 
 	updating_graph = true;
 
-	// Just use the default func for all the properties that need to be handled for drawing rather than adding to the Visual Script Class
-	if (script->has_function(default_func)) {
-		script->set_function_scroll(default_func, graph->get_scroll_ofs() / EDSCALE);
-		script->set_edited(true);
-	}
+	script->set_scroll(graph->get_scroll_ofs() / EDSCALE);
+	script->set_edited(true);
 	updating_graph = false;
 }
 
@@ -4090,10 +3661,7 @@ void VisualScriptEditor::_comment_node_resized(const Vector2 &p_new_size, int p_
 	if (updating_graph) {
 		return;
 	}
-
-	StringName func = _get_function_of_node(p_node);
-
-	Ref<VisualScriptComment> vsc = script->get_node(func, p_node);
+	Ref<VisualScriptComment> vsc = script->get_node(p_node);
 	if (vsc.is_null()) {
 		return;
 	}
@@ -4131,8 +3699,7 @@ void VisualScriptEditor::_menu_option(int p_what) {
 				if (gn) {
 					if (gn->is_selected()) {
 						int id = String(gn->get_name()).to_int();
-						StringName func = _get_function_of_node(id);
-						Ref<VisualScriptNode> vsn = script->get_node(func, id);
+						Ref<VisualScriptNode> vsn = script->get_node(id);
 						if (vsn.is_valid()) {
 							vsn->set_breakpoint(!vsn->is_breakpoint());
 							reselect.push_back(gn->get_name());
@@ -4154,30 +3721,23 @@ void VisualScriptEditor::_menu_option(int p_what) {
 		} break;
 		case EDIT_COPY_NODES:
 		case EDIT_CUT_NODES: {
-			if (!script->has_function(default_func)) {
-				break;
-			}
-
 			clipboard->nodes.clear();
 			clipboard->data_connections.clear();
 			clipboard->sequence_connections.clear();
 
-			Set<String> funcs;
 			for (int i = 0; i < graph->get_child_count(); i++) {
 				GraphNode *gn = Object::cast_to<GraphNode>(graph->get_child(i));
 				if (gn) {
 					if (gn->is_selected()) {
-						int id = String(gn->get_name()).to_int();
-						StringName func = _get_function_of_node(id);
-						Ref<VisualScriptNode> node = script->get_node(func, id);
+						int id = gn->get_name().operator String().to_int();
+						Ref<VisualScriptNode> node = script->get_node(id);
 						if (Object::cast_to<VisualScriptFunction>(*node)) {
 							EditorNode::get_singleton()->show_warning(TTR("Can't copy the function node."));
 							return;
 						}
 						if (node.is_valid()) {
 							clipboard->nodes[id] = node->duplicate(true);
-							clipboard->nodes_positions[id] = script->get_node_position(func, id);
-							funcs.insert(String(func));
+							clipboard->nodes_positions[id] = script->get_node_position(id);
 						}
 					}
 				}
@@ -4187,25 +3747,21 @@ void VisualScriptEditor::_menu_option(int p_what) {
 				break;
 			}
 
-			for (Set<String>::Element *F = funcs.front(); F; F = F->next()) {
-				List<VisualScript::SequenceConnection> sequence_connections;
+			List<VisualScript::SequenceConnection> sequence_connections;
+			script->get_sequence_connection_list(&sequence_connections);
 
-				script->get_sequence_connection_list(F->get(), &sequence_connections);
-
-				for (List<VisualScript::SequenceConnection>::Element *E = sequence_connections.front(); E; E = E->next()) {
-					if (clipboard->nodes.has(E->get().from_node) && clipboard->nodes.has(E->get().to_node)) {
-						clipboard->sequence_connections.insert(E->get());
-					}
+			for (List<VisualScript::SequenceConnection>::Element *E = sequence_connections.front(); E; E = E->next()) {
+				if (clipboard->nodes.has(E->get().from_node) && clipboard->nodes.has(E->get().to_node)) {
+					clipboard->sequence_connections.insert(E->get());
 				}
+			}
 
-				List<VisualScript::DataConnection> data_connections;
-
-				script->get_data_connection_list(F->get(), &data_connections);
+			List<VisualScript::DataConnection> data_connections;
+			script->get_data_connection_list(&data_connections);
 
-				for (List<VisualScript::DataConnection>::Element *E = data_connections.front(); E; E = E->next()) {
-					if (clipboard->nodes.has(E->get().from_node) && clipboard->nodes.has(E->get().to_node)) {
-						clipboard->data_connections.insert(E->get());
-					}
+			for (List<VisualScript::DataConnection>::Element *E = data_connections.front(); E; E = E->next()) {
+				if (clipboard->nodes.has(E->get().from_node) && clipboard->nodes.has(E->get().to_node)) {
+					clipboard->data_connections.insert(E->get());
 				}
 			}
 			if (p_what == EDIT_CUT_NODES) {
@@ -4214,10 +3770,6 @@ void VisualScriptEditor::_menu_option(int p_what) {
 
 		} break;
 		case EDIT_PASTE_NODES: {
-			if (!script->has_function(default_func)) {
-				break;
-			}
-
 			if (clipboard->nodes.is_empty()) {
 				EditorNode::get_singleton()->show_warning(TTR("Clipboard is empty!"));
 				break;
@@ -4233,15 +3785,11 @@ void VisualScriptEditor::_menu_option(int p_what) {
 			Set<Vector2> existing_positions;
 
 			{
-				List<StringName> functions;
-				script->get_function_list(&functions);
-				for (List<StringName>::Element *F = functions.front(); F; F = F->next()) {
-					List<int> nodes;
-					script->get_node_list(F->get(), &nodes);
-					for (List<int>::Element *E = nodes.front(); E; E = E->next()) {
-						Vector2 pos = script->get_node_position(F->get(), E->get()).snapped(Vector2(2, 2));
-						existing_positions.insert(pos);
-					}
+				List<int> nodes;
+				script->get_node_list(&nodes);
+				for (List<int>::Element *E = nodes.front(); E; E = E->next()) {
+					Vector2 pos = script->get_node_position(E->get()).snapped(Vector2(2, 2));
+					existing_positions.insert(pos);
 				}
 			}
 
@@ -4259,18 +3807,18 @@ void VisualScriptEditor::_menu_option(int p_what) {
 					paste_pos += Vector2(20, 20) * EDSCALE;
 				}
 
-				undo_redo->add_do_method(script.ptr(), "add_node", default_func, new_id, node, paste_pos);
-				undo_redo->add_undo_method(script.ptr(), "remove_node", default_func, new_id);
+				undo_redo->add_do_method(script.ptr(), "add_node", new_id, node, paste_pos);
+				undo_redo->add_undo_method(script.ptr(), "remove_node", new_id);
 			}
 
 			for (Set<VisualScript::SequenceConnection>::Element *E = clipboard->sequence_connections.front(); E; E = E->next()) {
-				undo_redo->add_do_method(script.ptr(), "sequence_connect", default_func, remap[E->get().from_node], E->get().from_output, remap[E->get().to_node]);
-				undo_redo->add_undo_method(script.ptr(), "sequence_disconnect", default_func, remap[E->get().from_node], E->get().from_output, remap[E->get().to_node]);
+				undo_redo->add_do_method(script.ptr(), "sequence_connect", remap[E->get().from_node], E->get().from_output, remap[E->get().to_node]);
+				undo_redo->add_undo_method(script.ptr(), "sequence_disconnect", remap[E->get().from_node], E->get().from_output, remap[E->get().to_node]);
 			}
 
 			for (Set<VisualScript::DataConnection>::Element *E = clipboard->data_connections.front(); E; E = E->next()) {
-				undo_redo->add_do_method(script.ptr(), "data_connect", default_func, remap[E->get().from_node], E->get().from_port, remap[E->get().to_node], E->get().to_port);
-				undo_redo->add_undo_method(script.ptr(), "data_disconnect", default_func, remap[E->get().from_node], E->get().from_port, remap[E->get().to_node], E->get().to_port);
+				undo_redo->add_do_method(script.ptr(), "data_connect", remap[E->get().from_node], E->get().from_port, remap[E->get().to_node], E->get().to_port);
+				undo_redo->add_undo_method(script.ptr(), "data_disconnect", remap[E->get().from_node], E->get().from_port, remap[E->get().to_node], E->get().to_port);
 			}
 
 			undo_redo->add_do_method(this, "_update_graph");
@@ -4287,7 +3835,7 @@ void VisualScriptEditor::_menu_option(int p_what) {
 			}
 		} break;
 		case EDIT_CREATE_FUNCTION: {
-			StringName function = "";
+			// Create Function.
 			Map<int, Ref<VisualScriptNode>> nodes;
 			Set<int> selections;
 			for (int i = 0; i < graph->get_child_count(); i++) {
@@ -4295,20 +3843,14 @@ void VisualScriptEditor::_menu_option(int p_what) {
 				if (gn) {
 					if (gn->is_selected()) {
 						int id = String(gn->get_name()).to_int();
-						StringName func = _get_function_of_node(id);
-						Ref<VisualScriptNode> node = script->get_node(func, id);
+						Ref<VisualScriptNode> node = script->get_node(id);
 						if (Object::cast_to<VisualScriptFunction>(*node)) {
 							EditorNode::get_singleton()->show_warning(TTR("Can't create function with a function node."));
 							return;
 						}
 						if (node.is_valid()) {
-							if (func != function && function != StringName("")) {
-								EditorNode::get_singleton()->show_warning(TTR("Can't create function of nodes from nodes of multiple functions."));
-								return;
-							}
 							nodes.insert(id, node);
 							selections.insert(id);
-							function = func;
 						}
 					}
 				}
@@ -4327,7 +3869,7 @@ void VisualScriptEditor::_menu_option(int p_what) {
 			int start_node = -1;
 			Set<int> end_nodes;
 			if (nodes.size() == 1) {
-				Ref<VisualScriptNode> nd = script->get_node(function, nodes.front()->key());
+				Ref<VisualScriptNode> nd = script->get_node(nodes.front()->key());
 				if (nd.is_valid() && nd->has_input_sequence_port()) {
 					start_node = nodes.front()->key();
 				} else {
@@ -4336,29 +3878,29 @@ void VisualScriptEditor::_menu_option(int p_what) {
 				}
 			} else {
 				List<VisualScript::SequenceConnection> seqs;
-				script->get_sequence_connection_list(function, &seqs);
+				script->get_sequence_connection_list(&seqs);
 
 				if (seqs.size() == 0) {
-					// in case there are no sequence connections
-					// select the top most node cause that's probably how
-					// the user wants to connect the nodes
+					// In case there are no sequence connections,
+					// select the top most node cause that's probably how,
+					// the user wants to connect the nodes.
 					int top_nd = -1;
 					Vector2 top;
 					for (Map<int, Ref<VisualScriptNode>>::Element *E = nodes.front(); E; E = E->next()) {
-						Ref<VisualScriptNode> nd = script->get_node(function, E->key());
+						Ref<VisualScriptNode> nd = script->get_node(E->key());
 						if (nd.is_valid() && nd->has_input_sequence_port()) {
 							if (top_nd < 0) {
 								top_nd = E->key();
-								top = script->get_node_position(function, top_nd);
+								top = script->get_node_position(top_nd);
 							}
-							Vector2 pos = script->get_node_position(function, E->key());
+							Vector2 pos = script->get_node_position(E->key());
 							if (top.y > pos.y) {
 								top_nd = E->key();
 								top = pos;
 							}
 						}
 					}
-					Ref<VisualScriptNode> nd = script->get_node(function, top_nd);
+					Ref<VisualScriptNode> nd = script->get_node(top_nd);
 					if (nd.is_valid() && nd->has_input_sequence_port()) {
 						start_node = top_nd;
 					} else {
@@ -4366,7 +3908,7 @@ void VisualScriptEditor::_menu_option(int p_what) {
 						return;
 					}
 				} else {
-					// pick the node with input sequence
+					// Pick the node with input sequence.
 					Set<int> nodes_from;
 					Set<int> nodes_to;
 					for (List<VisualScript::SequenceConnection>::Element *E = seqs.front(); E; E = E->next()) {
@@ -4387,13 +3929,13 @@ void VisualScriptEditor::_menu_option(int p_what) {
 						nodes_to.insert(E->get().to_node);
 					}
 
-					// to use to add return nodes
+					// To use to add return nodes.
 					_get_ends(start_node, seqs, selections, end_nodes);
 
 					if (start_node == -1) {
-						// if we still don't have a start node then
-						// run through the nodes and select the first tree node
-						// ie node without any input sequence but output sequence
+						// If we still don't have a start node then,
+						// run through the nodes and select the first tree node,
+						// ie node without any input sequence but output sequence.
 						for (Set<int>::Element *E = nodes_from.front(); E; E = E->next()) {
 							if (!nodes_to.has(E->get())) {
 								start_node = E->get();
@@ -4404,20 +3946,20 @@ void VisualScriptEditor::_menu_option(int p_what) {
 			}
 
 			if (start_node == -1) {
-				return; // this should not happen, but just in case something goes wrong
+				return; // This should not happen, but just in case something goes wrong.
 			}
 
 			List<Variant::Type> inputs; // input types
 			List<Pair<int, int>> input_connections;
 			{
 				List<VisualScript::DataConnection> dats;
-				script->get_data_connection_list(function, &dats);
+				script->get_data_connection_list(&dats);
 				for (List<VisualScript::DataConnection>::Element *E = dats.front(); E; E = E->next()) {
 					if (nodes.has(E->get().from_node) && nodes.has(E->get().to_node)) {
 						datamove.insert(E->get());
 					} else if (!nodes.has(E->get().from_node) && nodes.has(E->get().to_node)) {
-						// add all these as inputs for the Function
-						Ref<VisualScriptNode> node = script->get_node(function, E->get().to_node);
+						// Add all these as inputs for the Function.
+						Ref<VisualScriptNode> node = script->get_node(E->get().to_node);
 						if (node.is_valid()) {
 							dataext.insert(E->get());
 							PropertyInfo pi = node->get_input_value_port_info(E->get().to_port);
@@ -4429,59 +3971,55 @@ void VisualScriptEditor::_menu_option(int p_what) {
 					}
 				}
 			}
-
-			String new_fn = _validate_name("new_function");
-
-			Vector2 ofs = _get_available_pos(false, script->get_node_position(function, start_node) - Vector2(80, 150));
-
-			Ref<VisualScriptFunction> func_node;
-			func_node.instance();
-			func_node->set_name(new_fn);
-
-			undo_redo->create_action(TTR("Create Function"));
-
-			undo_redo->add_do_method(script.ptr(), "add_function", new_fn);
 			int fn_id = script->get_available_id();
-			undo_redo->add_do_method(script.ptr(), "add_node", new_fn, fn_id, func_node, ofs);
-			undo_redo->add_undo_method(script.ptr(), "remove_function", new_fn);
-			undo_redo->add_do_method(this, "_update_members");
-			undo_redo->add_undo_method(this, "_update_members");
-			undo_redo->add_do_method(this, "emit_signal", "edited_script_changed");
-			undo_redo->add_undo_method(this, "emit_signal", "edited_script_changed");
-
-			// Move the nodes
+			{
+				String new_fn = _validate_name("new_function");
 
-			for (Map<int, Ref<VisualScriptNode>>::Element *E = nodes.front(); E; E = E->next()) {
-				undo_redo->add_do_method(script.ptr(), "remove_node", function, E->key());
-				undo_redo->add_do_method(script.ptr(), "add_node", new_fn, E->key(), E->get(), script->get_node_position(function, E->key()));
+				Vector2 ofs = _get_available_pos(false, script->get_node_position(start_node) - Vector2(80, 150));
 
-				// undo_redo->add_undo_method(script.ptr(), "remove_node", new_fn, E->key()); not needed cause we already remove the function :P
-				undo_redo->add_undo_method(script.ptr(), "add_node", function, E->key(), E->get(), script->get_node_position(function, E->key()));
-			}
+				Ref<VisualScriptFunction> func_node;
+				func_node.instance();
+				func_node->set_name(new_fn);
 
-			for (Set<VisualScript::SequenceConnection>::Element *E = seqmove.front(); E; E = E->next()) {
-				undo_redo->add_do_method(script.ptr(), "sequence_connect", new_fn, E->get().from_node, E->get().from_output, E->get().to_node);
-				undo_redo->add_undo_method(script.ptr(), "sequence_connect", function, E->get().from_node, E->get().from_output, E->get().to_node);
-			}
+				undo_redo->create_action(TTR("Create Function"));
 
-			for (Set<VisualScript::DataConnection>::Element *E = datamove.front(); E; E = E->next()) {
-				undo_redo->add_do_method(script.ptr(), "data_connect", new_fn, E->get().from_node, E->get().from_port, E->get().to_node, E->get().to_port);
-				undo_redo->add_undo_method(script.ptr(), "data_connect", function, E->get().from_node, E->get().from_port, E->get().to_node, E->get().to_port);
+				undo_redo->add_do_method(script.ptr(), "add_function", new_fn, fn_id);
+				undo_redo->add_do_method(script.ptr(), "add_node", fn_id, func_node, ofs);
+				undo_redo->add_undo_method(script.ptr(), "remove_function", new_fn);
+				undo_redo->add_undo_method(script.ptr(), "remove_node", fn_id);
+				undo_redo->add_do_method(this, "_update_members");
+				undo_redo->add_undo_method(this, "_update_members");
+				undo_redo->add_do_method(this, "emit_signal", "edited_script_changed");
+				undo_redo->add_undo_method(this, "emit_signal", "edited_script_changed");
+				// Might make the system more intelligent by checking port from info.
+				int i = 0;
+				List<Pair<int, int>>::Element *F = input_connections.front();
+				for (List<Variant::Type>::Element *E = inputs.front(); E && F; E = E->next(), F = F->next()) {
+					func_node->add_argument(E->get(), "arg_" + String::num_int64(i), i);
+					undo_redo->add_do_method(script.ptr(), "data_connect", fn_id, i, F->get().first, F->get().second);
+					i++; // increment i
+				}
+				// Ensure Preview Selection is of newly created function node.
+				if (selections.size()) {
+					EditorNode::get_singleton()->push_item(func_node.ptr());
+				}
 			}
+			// Move the nodes.
 
-			// Add undo for external connections as well so that it's easier to revert back and forth
-			// these didn't require do methods as it's already handled internally by other do calls
+			// Handles reconnection of sequence connections on undo, start here in case of issues.
 			for (Set<VisualScript::SequenceConnection>::Element *E = seqext.front(); E; E = E->next()) {
-				undo_redo->add_undo_method(script.ptr(), "sequence_connect", function, E->get().from_node, E->get().from_output, E->get().to_node);
+				undo_redo->add_do_method(script.ptr(), "sequence_disconnect", E->get().from_node, E->get().from_output, E->get().to_node);
+				undo_redo->add_undo_method(script.ptr(), "sequence_connect", E->get().from_node, E->get().from_output, E->get().to_node);
 			}
 			for (Set<VisualScript::DataConnection>::Element *E = dataext.front(); E; E = E->next()) {
-				undo_redo->add_undo_method(script.ptr(), "data_connect", function, E->get().from_node, E->get().from_port, E->get().to_node, E->get().to_port);
+				undo_redo->add_do_method(script.ptr(), "data_disconnect", E->get().from_node, E->get().from_port, E->get().to_node, E->get().to_port);
+				undo_redo->add_undo_method(script.ptr(), "data_connect", E->get().from_node, E->get().from_port, E->get().to_node, E->get().to_port);
 			}
 
-			// I don't really think we need support for non sequenced functions at this moment
-			undo_redo->add_do_method(script.ptr(), "sequence_connect", new_fn, fn_id, 0, start_node);
+			// I don't really think we need support for non sequenced functions at this moment.
+			undo_redo->add_do_method(script.ptr(), "sequence_connect", fn_id, 0, start_node);
 
-			// end nodes are mapped to the return nodes with data connections if possible
+			// Could fail with the new changes, start here when searching for bugs in create function shortcut.
 			int m = 1;
 			for (Set<int>::Element *G = end_nodes.front(); G; G = G->next()) {
 				Ref<VisualScriptReturn> ret_node;
@@ -4489,36 +4027,27 @@ void VisualScriptEditor::_menu_option(int p_what) {
 
 				int ret_id = fn_id + (m++);
 				selections.insert(ret_id);
-				Vector2 ofsi = _get_available_pos(false, script->get_node_position(function, G->get()) + Vector2(80, -100));
-				undo_redo->add_do_method(script.ptr(), "add_node", new_fn, ret_id, ret_node, ofsi);
-				undo_redo->add_undo_method(script.ptr(), "remove_node", new_fn, ret_id);
+				Vector2 ofsi = _get_available_pos(false, script->get_node_position(G->get()) + Vector2(80, -100));
+				undo_redo->add_do_method(script.ptr(), "add_node", ret_id, ret_node, ofsi);
+				undo_redo->add_undo_method(script.ptr(), "remove_node", ret_id);
 
-				undo_redo->add_do_method(script.ptr(), "sequence_connect", new_fn, G->get(), 0, ret_id);
-				// add data outputs from each of the end_nodes
-				Ref<VisualScriptNode> vsn = script->get_node(function, G->get());
+				undo_redo->add_do_method(script.ptr(), "sequence_connect", G->get(), 0, ret_id);
+				// Add data outputs from each of the end_nodes.
+				Ref<VisualScriptNode> vsn = script->get_node(G->get());
 				if (vsn.is_valid() && vsn->get_output_value_port_count() > 0) {
 					ret_node->set_enable_return_value(true);
-					// use the zeroth data port cause that's the likely one that is planned to be used
+					// Use the zeroth data port cause that's the likely one that is planned to be used.
 					ret_node->set_return_type(vsn->get_output_value_port_info(0).type);
-					undo_redo->add_do_method(script.ptr(), "data_connect", new_fn, G->get(), 0, ret_id, 0);
+					undo_redo->add_do_method(script.ptr(), "data_connect", G->get(), 0, ret_id, 0);
 				}
 			}
 
-			// * might make the system more intelligent by checking port from info.
-			int i = 0;
-			List<Pair<int, int>>::Element *F = input_connections.front();
-			for (List<Variant::Type>::Element *E = inputs.front(); E && F; E = E->next(), F = F->next()) {
-				func_node->add_argument(E->get(), "arg_" + String::num_int64(i), i);
-				undo_redo->add_do_method(script.ptr(), "data_connect", new_fn, fn_id, i, F->get().first, F->get().second);
-				i++; // increment i
-			}
-
 			undo_redo->add_do_method(this, "_update_graph");
 			undo_redo->add_undo_method(this, "_update_graph");
 
 			undo_redo->commit_action();
 
-			// make sure all Nodes get marked for selection so that they can be moved together
+			// Make sure all Nodes get marked for selection so that they can be moved together.
 			selections.insert(fn_id);
 			for (int k = 0; k < graph->get_child_count(); k++) {
 				GraphNode *gn = Object::cast_to<GraphNode>(graph->get_child(k));
@@ -4528,11 +4057,6 @@ void VisualScriptEditor::_menu_option(int p_what) {
 				}
 			}
 
-			// Ensure Preview Selection is of newly created function node
-			if (selections.size()) {
-				EditorNode::get_singleton()->push_item(func_node.ptr());
-			}
-
 		} break;
 		case REFRESH_GRAPH: {
 			_update_graph();
@@ -4540,16 +4064,16 @@ void VisualScriptEditor::_menu_option(int p_what) {
 	}
 }
 
-// this is likely going to be very slow and I am not sure if I should keep it
-// but I hope that it will not be a problem considering that we won't be creating functions so frequently
-// and cyclic connections would be a problem but hopefully we won't let them get to this point
+// This is likely going to be very slow and I am not sure if I should keep it,
+// but I hope that it will not be a problem considering that we won't be creating functions so frequently,
+// and cyclic connections would be a problem but hopefully we won't let them get to this point.
 void VisualScriptEditor::_get_ends(int p_node, const List<VisualScript::SequenceConnection> &p_seqs, const Set<int> &p_selected, Set<int> &r_end_nodes) {
 	for (const List<VisualScript::SequenceConnection>::Element *E = p_seqs.front(); E; E = E->next()) {
 		int from = E->get().from_node;
 		int to = E->get().to_node;
 
 		if (from == p_node && p_selected.has(to)) {
-			// this is an interior connection move forward to the to node
+			// This is an interior connection move forward to the to node.
 			_get_ends(to, p_seqs, p_selected, r_end_nodes);
 		} else if (from == p_node && !p_selected.has(to)) {
 			r_end_nodes.insert(from);
@@ -4609,34 +4133,29 @@ void VisualScriptEditor::_member_option(int p_option) {
 	switch (member_type) {
 		case MEMBER_FUNCTION: {
 			if (p_option == MEMBER_REMOVE) {
-				//delete the function
+				// Delete the function.
 				String name = member_name;
-
+				List<String> lst;
+				int fn_node = script->get_function_node_id(name);
 				undo_redo->create_action(TTR("Remove Function"));
 				undo_redo->add_do_method(script.ptr(), "remove_function", name);
-				undo_redo->add_undo_method(script.ptr(), "add_function", name);
-				List<int> nodes;
-				script->get_node_list(name, &nodes);
-				for (List<int>::Element *E = nodes.front(); E; E = E->next()) {
-					undo_redo->add_undo_method(script.ptr(), "add_node", name, E->get(), script->get_node(name, E->get()), script->get_node_position(name, E->get()));
-				}
-
-				List<VisualScript::SequenceConnection> seq_connections;
-
-				script->get_sequence_connection_list(name, &seq_connections);
-
-				for (List<VisualScript::SequenceConnection>::Element *E = seq_connections.front(); E; E = E->next()) {
-					undo_redo->add_undo_method(script.ptr(), "sequence_connect", name, E->get().from_node, E->get().from_output, E->get().to_node);
+				undo_redo->add_do_method(script.ptr(), "remove_node", fn_node);
+				undo_redo->add_undo_method(script.ptr(), "add_function", name, fn_node);
+				undo_redo->add_undo_method(script.ptr(), "add_node", fn_node, script->get_node(fn_node), script->get_node_position(fn_node));
+				List<VisualScript::SequenceConnection> seqcons;
+				script->get_sequence_connection_list(&seqcons);
+				for (const List<VisualScript::SequenceConnection>::Element *E = seqcons.front(); E; E = E->next()) {
+					if (E->get().from_node == fn_node) {
+						undo_redo->add_undo_method(script.ptr(), "sequence_connect", fn_node, E->get().from_output, E->get().to_node);
+					}
 				}
-
-				List<VisualScript::DataConnection> data_connections;
-
-				script->get_data_connection_list(name, &data_connections);
-
-				for (List<VisualScript::DataConnection>::Element *E = data_connections.front(); E; E = E->next()) {
-					undo_redo->add_undo_method(script.ptr(), "data_connect", name, E->get().from_node, E->get().from_port, E->get().to_node, E->get().to_port);
+				List<VisualScript::DataConnection> datcons;
+				script->get_data_connection_list(&datcons);
+				for (const List<VisualScript::DataConnection>::Element *E = datcons.front(); E; E = E->next()) {
+					if (E->get().from_node == fn_node) {
+						undo_redo->add_undo_method(script.ptr(), "data_connect", fn_node, E->get().from_port, E->get().to_node, E->get().to_port);
+					}
 				}
-
 				undo_redo->add_do_method(this, "_update_members");
 				undo_redo->add_undo_method(this, "_update_members");
 				undo_redo->add_do_method(this, "_update_graph");
diff --git a/modules/visual_script/visual_script_editor.h b/modules/visual_script/visual_script_editor.h
index a788c00c61..bb6f194286 100644
--- a/modules/visual_script/visual_script_editor.h
+++ b/modules/visual_script/visual_script_editor.h
@@ -136,8 +136,6 @@ class VisualScriptEditor : public ScriptEditorBase {
 	};
 
 	HashMap<StringName, Ref<StyleBox>> node_styles;
-	StringName edited_func;
-	StringName default_func;
 
 	void _update_graph_connections();
 	void _update_graph(int p_only_id = -1);
@@ -176,7 +174,7 @@ class VisualScriptEditor : public ScriptEditorBase {
 
 	Vector2 mouse_up_position;
 
-	void _port_action_menu(int p_option, const StringName &p_func);
+	void _port_action_menu(int p_option);
 
 	void connect_data(Ref<VisualScriptNode> vnode_old, Ref<VisualScriptNode> vnode, int new_id);
 
@@ -184,13 +182,13 @@ class VisualScriptEditor : public ScriptEditorBase {
 	void connect_seq(Ref<VisualScriptNode> vnode_old, Ref<VisualScriptNode> vnode_new, int new_id);
 
 	void _cancel_connect_node();
-	int _create_new_node_from_name(const String &p_text, const Vector2 &p_point, const StringName &p_func = StringName());
+	int _create_new_node_from_name(const String &p_text, const Vector2 &p_point);
 	void _selected_new_virtual_method(const String &p_text, const String &p_category, const bool p_connecting);
 
 	int error_line;
 
 	void _node_selected(Node *p_node);
-	void _center_on_node(const StringName &p_func, int p_id);
+	void _center_on_node(int p_id);
 
 	void _node_filter_changed(const String &p_text);
 	void _change_base_type_callback();
@@ -201,7 +199,7 @@ class VisualScriptEditor : public ScriptEditorBase {
 
 	void _begin_node_move();
 	void _end_node_move();
-	void _move_node(const StringName &p_func, int p_id, const Vector2 &p_to);
+	void _move_node(int p_id, const Vector2 &p_to);
 
 	void _get_ends(int p_node, const List<VisualScript::SequenceConnection> &p_seqs, const Set<int> &p_selected, Set<int> &r_end_nodes);
 
@@ -211,7 +209,7 @@ class VisualScriptEditor : public ScriptEditorBase {
 	void _graph_disconnected(const String &p_from, int p_from_slot, const String &p_to, int p_to_slot);
 	void _graph_connect_to_empty(const String &p_from, int p_from_slot, const Vector2 &p_release_pos);
 
-	void _node_ports_changed(const String &p_func, int p_id);
+	void _node_ports_changed(int p_id);
 	void _node_create();
 
 	void _update_available_nodes();
@@ -228,10 +226,8 @@ class VisualScriptEditor : public ScriptEditorBase {
 	void _port_name_focus_out(const Node *p_name_box, int p_id, int p_port, bool is_input);
 
 	Vector2 _get_available_pos(bool centered = true, Vector2 ofs = Vector2()) const;
-	StringName _get_function_of_node(int p_id) const;
 
-	void _move_nodes_with_rescan(const StringName &p_func_from, const StringName &p_func_to, int p_id);
-	bool node_has_sequence_connections(const StringName &p_func, int p_id);
+	bool node_has_sequence_connections(int p_id);
 
 	void _generic_search(String p_base_type = "", Vector2 pos = Vector2(), bool node_centered = false);