Replace NULL with nullptr

11 files changed, 123 insertions, 123 deletions

diff --git a/modules/visual_script/register_types.cpp b/modules/visual_script/register_types.cpp
index 63bd88ad81..5ea84a32c4 100644
--- a/modules/visual_script/register_types.cpp
+++ b/modules/visual_script/register_types.cpp
@@ -41,9 +41,9 @@
 #include "visual_script_nodes.h"
 #include "visual_script_yield_nodes.h"
 
-VisualScriptLanguage *visual_script_language = NULL;
+VisualScriptLanguage *visual_script_language = nullptr;
 #ifdef TOOLS_ENABLED
-static _VisualScriptEditor *vs_editor_singleton = NULL;
+static _VisualScriptEditor *vs_editor_singleton = nullptr;
 #endif
 
 void register_visual_script_types() {
diff --git a/modules/visual_script/visual_script.cpp b/modules/visual_script/visual_script.cpp
index d00cc6986f..b52dfe1733 100644
--- a/modules/visual_script/visual_script.cpp
+++ b/modules/visual_script/visual_script.cpp
@@ -94,7 +94,7 @@ void VisualScriptNode::validate_input_default_values() {
 			default_input_values[i] = Variant::construct(expected, &existingp, 1, ce, false);
 			if (ce.error != Callable::CallError::CALL_OK) {
 				//could not convert? force..
-				default_input_values[i] = Variant::construct(expected, NULL, 0, ce, false);
+				default_input_values[i] = Variant::construct(expected, nullptr, 0, ce, false);
 			}
 		}
 	}
@@ -158,8 +158,8 @@ VisualScriptNode::VisualScriptNode() {
 
 VisualScriptNodeInstance::VisualScriptNodeInstance() {
 
-	sequence_outputs = NULL;
-	input_ports = NULL;
+	sequence_outputs = nullptr;
+	input_ports = nullptr;
 }
 
 VisualScriptNodeInstance::~VisualScriptNodeInstance() {
@@ -1594,7 +1594,7 @@ void VisualScriptInstance::_dependency_step(VisualScriptNodeInstance *node, int
 		output_args[i] = &variant_stack[node->output_ports[i]];
 	}
 
-	Variant *working_mem = node->working_mem_idx >= 0 ? &variant_stack[node->working_mem_idx] : (Variant *)NULL;
+	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
@@ -1615,8 +1615,8 @@ Variant VisualScriptInstance::_call_internal(const StringName &p_method, void *p
 	const Variant **input_args = (const Variant **)(sequence_bits + f->node_count);
 	Variant **output_args = (Variant **)(input_args + max_input_args);
 	int flow_max = f->flow_stack_size;
-	int *flow_stack = flow_max ? (int *)(output_args + max_output_args) : (int *)NULL;
-	int *pass_stack = flow_stack ? (int *)(flow_stack + flow_max) : (int *)NULL;
+	int *flow_stack = flow_max ? (int *)(output_args + max_output_args) : (int *)nullptr;
+	int *pass_stack = flow_stack ? (int *)(flow_stack + flow_max) : (int *)nullptr;
 
 	String error_str;
 
@@ -1624,7 +1624,7 @@ Variant VisualScriptInstance::_call_internal(const StringName &p_method, void *p
 	bool error = false;
 	int current_node_id = f->node;
 	Variant return_value;
-	Variant *working_mem = NULL;
+	Variant *working_mem = nullptr;
 
 	int flow_stack_pos = p_flow_stack_pos;
 
@@ -1643,7 +1643,7 @@ Variant VisualScriptInstance::_call_internal(const StringName &p_method, void *p
 		VSDEBUG("AT STACK POS: " + itos(flow_stack_pos));
 
 		//setup working mem
-		working_mem = node->working_mem_idx >= 0 ? &variant_stack[node->working_mem_idx] : (Variant *)NULL;
+		working_mem = node->working_mem_idx >= 0 ? &variant_stack[node->working_mem_idx] : (Variant *)nullptr;
 
 		VSDEBUG("WORKING MEM: " + itos(node->working_mem_idx));
 
@@ -1817,7 +1817,7 @@ Variant VisualScriptInstance::_call_internal(const StringName &p_method, void *p
 			break; //exit function requested, bye
 		}
 
-		VisualScriptNodeInstance *next = NULL; //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
@@ -2033,8 +2033,8 @@ Variant VisualScriptInstance::call(const StringName &p_method, const Variant **p
 	const Variant **input_args = (const Variant **)(sequence_bits + f->node_count);
 	Variant **output_args = (Variant **)(input_args + max_input_args);
 	int flow_max = f->flow_stack_size;
-	int *flow_stack = flow_max ? (int *)(output_args + max_output_args) : (int *)NULL;
-	int *pass_stack = flow_stack ? (int *)(flow_stack + flow_max) : (int *)NULL;
+	int *flow_stack = flow_max ? (int *)(output_args + max_output_args) : (int *)nullptr;
+	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
@@ -2097,7 +2097,7 @@ void VisualScriptInstance::notification(int p_notification) {
 String VisualScriptInstance::to_string(bool *r_valid) {
 	if (has_method(CoreStringNames::get_singleton()->_to_string)) {
 		Callable::CallError ce;
-		Variant ret = call(CoreStringNames::get_singleton()->_to_string, NULL, 0, ce);
+		Variant ret = call(CoreStringNames::get_singleton()->_to_string, nullptr, 0, ce);
 		if (ce.error == Callable::CallError::CALL_OK) {
 			if (ret.get_type() != Variant::STRING) {
 				if (r_valid)
@@ -2237,12 +2237,12 @@ void VisualScriptInstance::create(const Ref<VisualScript> &p_script, Object *p_o
 
 			instance->id = F->key();
 			instance->input_port_count = node->get_input_value_port_count();
-			instance->input_ports = NULL;
+			instance->input_ports = nullptr;
 			instance->output_port_count = node->get_output_value_port_count();
-			instance->output_ports = NULL;
+			instance->output_ports = nullptr;
 			instance->sequence_output_count = node->get_output_sequence_port_count();
 			instance->sequence_index = function.node_count++;
-			instance->sequence_outputs = NULL;
+			instance->sequence_outputs = nullptr;
 			instance->pass_idx = -1;
 
 			if (instance->input_port_count) {
@@ -2263,7 +2263,7 @@ void VisualScriptInstance::create(const Ref<VisualScript> &p_script, Object *p_o
 			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->sequence_outputs[i] = nullptr; //if it remains null, flow ends here
 				}
 			}
 
@@ -2797,7 +2797,7 @@ int VisualScriptLanguage::profiling_get_frame_data(ProfilingInfo *p_info_arr, in
 	return 0;
 }
 
-VisualScriptLanguage *VisualScriptLanguage::singleton = NULL;
+VisualScriptLanguage *VisualScriptLanguage::singleton = nullptr;
 
 void VisualScriptLanguage::add_register_func(const String &p_name, VisualScriptNodeRegisterFunc p_func) {
 
@@ -2844,7 +2844,7 @@ VisualScriptLanguage::VisualScriptLanguage() {
 
 	} else {
 		_debug_max_call_stack = 0;
-		_call_stack = NULL;
+		_call_stack = nullptr;
 	}
 }
 
@@ -2853,5 +2853,5 @@ VisualScriptLanguage::~VisualScriptLanguage() {
 	if (_call_stack) {
 		memdelete_arr(_call_stack);
 	}
-	singleton = NULL;
+	singleton = nullptr;
 }
diff --git a/modules/visual_script/visual_script.h b/modules/visual_script/visual_script.h
index 20273316b4..29309aa156 100644
--- a/modules/visual_script/visual_script.h
+++ b/modules/visual_script/visual_script.h
@@ -420,7 +420,7 @@ public:
 	virtual bool set(const StringName &p_name, const Variant &p_value);
 	virtual bool get(const StringName &p_name, Variant &r_ret) const;
 	virtual void get_property_list(List<PropertyInfo> *p_properties) const;
-	virtual Variant::Type get_property_type(const StringName &p_name, bool *r_is_valid = NULL) const;
+	virtual Variant::Type get_property_type(const StringName &p_name, bool *r_is_valid = nullptr) const;
 
 	virtual void get_method_list(List<MethodInfo> *p_list) const;
 	virtual bool has_method(const StringName &p_method) const;
@@ -596,7 +596,7 @@ public:
 	virtual Ref<Script> get_template(const String &p_class_name, const String &p_base_class_name) const;
 	virtual bool is_using_templates();
 	virtual void make_template(const String &p_class_name, const String &p_base_class_name, Ref<Script> &p_script);
-	virtual bool validate(const String &p_script, int &r_line_error, int &r_col_error, String &r_test_error, const String &p_path = "", List<String> *r_functions = NULL, List<ScriptLanguage::Warning> *r_warnings = NULL, Set<int> *r_safe_lines = NULL) const;
+	virtual bool validate(const String &p_script, int &r_line_error, int &r_col_error, String &r_test_error, const String &p_path = "", List<String> *r_functions = nullptr, List<ScriptLanguage::Warning> *r_warnings = nullptr, Set<int> *r_safe_lines = nullptr) const;
 	virtual Script *create_script() const;
 	virtual bool has_named_classes() const;
 	virtual bool supports_builtin_mode() const;
diff --git a/modules/visual_script/visual_script_builtin_funcs.cpp b/modules/visual_script/visual_script_builtin_funcs.cpp
index 07f152efd4..39d8f7c082 100644
--- a/modules/visual_script/visual_script_builtin_funcs.cpp
+++ b/modules/visual_script/visual_script_builtin_funcs.cpp
@@ -1231,7 +1231,7 @@ void VisualScriptBuiltinFunc::exec_func(BuiltinFunc p_func, const Variant **p_in
 			PackedByteArray barr;
 			int len;
 			bool full_objects = *p_inputs[1];
-			Error err = encode_variant(*p_inputs[0], NULL, len, full_objects);
+			Error err = encode_variant(*p_inputs[0], nullptr, len, full_objects);
 			if (err) {
 				r_error.error = Callable::CallError::CALL_ERROR_INVALID_ARGUMENT;
 				r_error.argument = 0;
@@ -1267,7 +1267,7 @@ void VisualScriptBuiltinFunc::exec_func(BuiltinFunc p_func, const Variant **p_in
 			Variant ret;
 			{
 				const uint8_t *r = varr.ptr();
-				Error err = decode_variant(ret, r, varr.size(), NULL, allow_objects);
+				Error err = decode_variant(ret, r, varr.size(), nullptr, allow_objects);
 				if (err != OK) {
 					r_error_str = RTR("Not enough bytes for decoding bytes, or invalid format.");
 					r_error.error = Callable::CallError::CALL_ERROR_INVALID_ARGUMENT;
diff --git a/modules/visual_script/visual_script_editor.cpp b/modules/visual_script/visual_script_editor.cpp
index 19771ef373..30522930c7 100644
--- a/modules/visual_script/visual_script_editor.cpp
+++ b/modules/visual_script/visual_script_editor.cpp
@@ -182,7 +182,7 @@ public:
 		_change_notify();
 	}
 
-	VisualScriptEditorSignalEdit() { undo_redo = NULL; }
+	VisualScriptEditorSignalEdit() { undo_redo = nullptr; }
 };
 
 class VisualScriptEditorVariableEdit : public Object {
@@ -335,7 +335,7 @@ public:
 		_change_notify();
 	}
 
-	VisualScriptEditorVariableEdit() { undo_redo = NULL; }
+	VisualScriptEditorVariableEdit() { undo_redo = nullptr; }
 };
 
 static Color _color_from_type(Variant::Type p_type, bool dark_theme = true) {
@@ -1932,7 +1932,7 @@ bool VisualScriptEditor::can_drop_data_fw(const Point2 &p_point, const Variant &
 static Node *_find_script_node(Node *p_edited_scene, Node *p_current_node, const Ref<Script> &script) {
 
 	if (p_edited_scene != p_current_node && p_current_node->get_owner() != p_edited_scene)
-		return NULL;
+		return nullptr;
 
 	Ref<Script> scr = p_current_node->get_script();
 
@@ -1945,7 +1945,7 @@ static Node *_find_script_node(Node *p_edited_scene, Node *p_current_node, const
 			return n;
 	}
 
-	return NULL;
+	return nullptr;
 }
 
 void VisualScriptEditor::drop_data_fw(const Point2 &p_point, const Variant &p_data, Control *p_from) {
@@ -3447,7 +3447,7 @@ void VisualScriptEditor::connect_data(Ref<VisualScriptNode> vnode_old, Ref<Visua
 
 	undo_redo->create_action(TTR("Connect Node Data"));
 	VisualScriptReturn *vnode_return = Object::cast_to<VisualScriptReturn>(vnode.ptr());
-	if (vnode_return != NULL && vnode_old->get_output_value_port_count() > 0) {
+	if (vnode_return != nullptr && vnode_old->get_output_value_port_count() > 0) {
 		vnode_return->set_enable_return_value(true);
 	}
 	if (vnode_old->get_output_value_port_count() <= 0) {
@@ -3713,11 +3713,11 @@ void VisualScriptEditor::_selected_connect_node(const String &p_text, const Stri
 void VisualScriptEditor::connect_seq(Ref<VisualScriptNode> vnode_old, Ref<VisualScriptNode> vnode_new, int new_id) {
 
 	VisualScriptOperator *vnode_operator = Object::cast_to<VisualScriptOperator>(vnode_new.ptr());
-	if (vnode_operator != NULL && !vnode_operator->has_input_sequence_port()) {
+	if (vnode_operator != nullptr && !vnode_operator->has_input_sequence_port()) {
 		return;
 	}
 	VisualScriptConstructor *vnode_constructor = Object::cast_to<VisualScriptConstructor>(vnode_new.ptr());
-	if (vnode_constructor != NULL) {
+	if (vnode_constructor != nullptr) {
 		return;
 	}
 	if (vnode_old->get_output_sequence_port_count() <= 0) {
@@ -3889,7 +3889,7 @@ void VisualScriptEditor::_default_value_edited(Node *p_button, int p_id, int p_i
 		}
 	}
 
-	if (default_value_edit->edit(NULL, pinfo.name, pinfo.type, existing, pinfo.hint, pinfo.hint_string)) {
+	if (default_value_edit->edit(nullptr, pinfo.name, pinfo.type, existing, pinfo.hint, pinfo.hint_string)) {
 		if (pinfo.hint == PROPERTY_HINT_MULTILINE_TEXT)
 			default_value_edit->popup_centered_ratio();
 		else
@@ -4878,10 +4878,10 @@ static ScriptEditorBase *create_editor(const RES &p_resource) {
 		return memnew(VisualScriptEditor);
 	}
 
-	return NULL;
+	return nullptr;
 }
 
-VisualScriptEditor::Clipboard *VisualScriptEditor::clipboard = NULL;
+VisualScriptEditor::Clipboard *VisualScriptEditor::clipboard = nullptr;
 
 void VisualScriptEditor::free_clipboard() {
 	if (clipboard)
@@ -4917,7 +4917,7 @@ Ref<VisualScriptNode> _VisualScriptEditor::create_node_custom(const String &p_na
 	return node;
 }
 
-_VisualScriptEditor *_VisualScriptEditor::singleton = NULL;
+_VisualScriptEditor *_VisualScriptEditor::singleton = nullptr;
 Map<String, REF> _VisualScriptEditor::custom_nodes;
 
 _VisualScriptEditor::_VisualScriptEditor() {
diff --git a/modules/visual_script/visual_script_expression.cpp b/modules/visual_script/visual_script_expression.cpp
index c52315a477..71ed483d65 100644
--- a/modules/visual_script/visual_script_expression.cpp
+++ b/modules/visual_script/visual_script_expression.cpp
@@ -652,12 +652,12 @@ VisualScriptExpression::ENode *VisualScriptExpression::_parse_expression() {
 
 	while (true) {
 		//keep appending stuff to expression
-		ENode *expr = NULL;
+		ENode *expr = nullptr;
 
 		Token tk;
 		_get_token(tk);
 		if (error_set)
-			return NULL;
+			return nullptr;
 
 		switch (tk.type) {
 			case TK_CURLY_BRACKET_OPEN: {
@@ -675,18 +675,18 @@ VisualScriptExpression::ENode *VisualScriptExpression::_parse_expression() {
 					//parse an expression
 					ENode *expr2 = _parse_expression();
 					if (!expr2)
-						return NULL;
+						return nullptr;
 					dn->dict.push_back(expr2);
 
 					_get_token(tk);
 					if (tk.type != TK_COLON) {
 						_set_error("Expected ':'");
-						return NULL;
+						return nullptr;
 					}
 
 					expr2 = _parse_expression();
 					if (!expr2)
-						return NULL;
+						return nullptr;
 
 					dn->dict.push_back(expr2);
 
@@ -719,7 +719,7 @@ VisualScriptExpression::ENode *VisualScriptExpression::_parse_expression() {
 					//parse an expression
 					ENode *expr2 = _parse_expression();
 					if (!expr2)
-						return NULL;
+						return nullptr;
 					an->array.push_back(expr2);
 
 					cofs = str_ofs;
@@ -739,11 +739,11 @@ VisualScriptExpression::ENode *VisualScriptExpression::_parse_expression() {
 				//a suexpression
 				ENode *e = _parse_expression();
 				if (error_set)
-					return NULL;
+					return nullptr;
 				_get_token(tk);
 				if (tk.type != TK_PARENTHESIS_CLOSE) {
 					_set_error("Expected ')'");
-					return NULL;
+					return nullptr;
 				}
 
 				expr = e;
@@ -766,7 +766,7 @@ VisualScriptExpression::ENode *VisualScriptExpression::_parse_expression() {
 					expr = input;
 				} else {
 					_set_error("Invalid input identifier '" + what + "'. For script variables, use self (locals are for inputs)." + what);
-					return NULL;
+					return nullptr;
 				}
 			} break;
 			case TK_SELF: {
@@ -786,7 +786,7 @@ VisualScriptExpression::ENode *VisualScriptExpression::_parse_expression() {
 				_get_token(tk);
 				if (tk.type != TK_PARENTHESIS_OPEN) {
 					_set_error("Expected '('");
-					return NULL;
+					return nullptr;
 				}
 
 				ConstructorNode *constructor = alloc_node<ConstructorNode>();
@@ -803,7 +803,7 @@ VisualScriptExpression::ENode *VisualScriptExpression::_parse_expression() {
 					//parse an expression
 					ENode *expr2 = _parse_expression();
 					if (!expr2)
-						return NULL;
+						return nullptr;
 
 					constructor->arguments.push_back(expr2);
 
@@ -827,7 +827,7 @@ VisualScriptExpression::ENode *VisualScriptExpression::_parse_expression() {
 				_get_token(tk);
 				if (tk.type != TK_PARENTHESIS_OPEN) {
 					_set_error("Expected '('");
-					return NULL;
+					return nullptr;
 				}
 
 				BuiltinFuncNode *bifunc = alloc_node<BuiltinFuncNode>();
@@ -844,7 +844,7 @@ VisualScriptExpression::ENode *VisualScriptExpression::_parse_expression() {
 					//parse an expression
 					ENode *expr2 = _parse_expression();
 					if (!expr2)
-						return NULL;
+						return nullptr;
 
 					bifunc->arguments.push_back(expr2);
 
@@ -886,7 +886,7 @@ VisualScriptExpression::ENode *VisualScriptExpression::_parse_expression() {
 
 			default: {
 				_set_error("Expected expression.");
-				return NULL;
+				return nullptr;
 			} break;
 		}
 
@@ -896,7 +896,7 @@ VisualScriptExpression::ENode *VisualScriptExpression::_parse_expression() {
 			int cofs2 = str_ofs;
 			_get_token(tk);
 			if (error_set)
-				return NULL;
+				return nullptr;
 
 			bool done = false;
 
@@ -909,14 +909,14 @@ VisualScriptExpression::ENode *VisualScriptExpression::_parse_expression() {
 
 					ENode *what = _parse_expression();
 					if (!what)
-						return NULL;
+						return nullptr;
 
 					index->index = what;
 
 					_get_token(tk);
 					if (tk.type != TK_BRACKET_CLOSE) {
 						_set_error("Expected ']' at end of index.");
-						return NULL;
+						return nullptr;
 					}
 					expr = index;
 
@@ -926,7 +926,7 @@ VisualScriptExpression::ENode *VisualScriptExpression::_parse_expression() {
 					_get_token(tk);
 					if (tk.type != TK_IDENTIFIER) {
 						_set_error("Expected identifier after '.'");
-						return NULL;
+						return nullptr;
 					}
 
 					StringName identifier = tk.value;
@@ -950,7 +950,7 @@ VisualScriptExpression::ENode *VisualScriptExpression::_parse_expression() {
 							//parse an expression
 							ENode *expr2 = _parse_expression();
 							if (!expr2)
-								return NULL;
+								return nullptr;
 
 							func_call->arguments.push_back(expr2);
 
@@ -1000,7 +1000,7 @@ VisualScriptExpression::ENode *VisualScriptExpression::_parse_expression() {
 		int cofs = str_ofs;
 		_get_token(tk);
 		if (error_set)
-			return NULL;
+			return nullptr;
 
 		Variant::Operator op = Variant::OP_MAX;
 
@@ -1107,7 +1107,7 @@ VisualScriptExpression::ENode *VisualScriptExpression::_parse_expression() {
 
 				default: {
 					_set_error("Parser bug, invalid operator in expression: " + itos(expression[i].op));
-					return NULL;
+					return nullptr;
 				}
 			}
 
@@ -1124,7 +1124,7 @@ VisualScriptExpression::ENode *VisualScriptExpression::_parse_expression() {
 		if (next_op == -1) {
 
 			_set_error("Yet another parser bug....");
-			ERR_FAIL_V(NULL);
+			ERR_FAIL_V(nullptr);
 		}
 
 		// OK! create operator..
@@ -1137,7 +1137,7 @@ VisualScriptExpression::ENode *VisualScriptExpression::_parse_expression() {
 				if (expr_pos == expression.size()) {
 					//can happen..
 					_set_error("Unexpected end of expression...");
-					return NULL;
+					return nullptr;
 				}
 			}
 
@@ -1147,7 +1147,7 @@ VisualScriptExpression::ENode *VisualScriptExpression::_parse_expression() {
 				OperatorNode *op = alloc_node<OperatorNode>();
 				op->op = expression[i].op;
 				op->nodes[0] = expression[i + 1].node;
-				op->nodes[1] = NULL;
+				op->nodes[1] = nullptr;
 				expression.write[i].is_op = false;
 				expression.write[i].node = op;
 				expression.remove(i + 1);
@@ -1157,7 +1157,7 @@ VisualScriptExpression::ENode *VisualScriptExpression::_parse_expression() {
 
 			if (next_op < 1 || next_op >= (expression.size() - 1)) {
 				_set_error("Parser bug...");
-				ERR_FAIL_V(NULL);
+				ERR_FAIL_V(nullptr);
 			}
 
 			OperatorNode *op = alloc_node<OperatorNode>();
@@ -1166,7 +1166,7 @@ VisualScriptExpression::ENode *VisualScriptExpression::_parse_expression() {
 			if (expression[next_op - 1].is_op) {
 
 				_set_error("Parser bug...");
-				ERR_FAIL_V(NULL);
+				ERR_FAIL_V(nullptr);
 			}
 
 			if (expression[next_op + 1].is_op) {
@@ -1176,7 +1176,7 @@ VisualScriptExpression::ENode *VisualScriptExpression::_parse_expression() {
 				// due to how precedence works, unaries will always disappear first
 
 				_set_error("Unexpected two consecutive operators.");
-				return NULL;
+				return nullptr;
 			}
 
 			op->nodes[0] = expression[next_op - 1].node; //expression goes as left
@@ -1199,8 +1199,8 @@ bool VisualScriptExpression::_compile_expression() {
 
 	if (nodes) {
 		memdelete(nodes);
-		nodes = NULL;
-		root = NULL;
+		nodes = nullptr;
+		root = nullptr;
 	}
 
 	error_str = String();
@@ -1210,11 +1210,11 @@ bool VisualScriptExpression::_compile_expression() {
 	root = _parse_expression();
 
 	if (error_set) {
-		root = NULL;
+		root = nullptr;
 		if (nodes) {
 			memdelete(nodes);
 		}
-		nodes = NULL;
+		nodes = nullptr;
 		return true;
 	}
 
@@ -1478,8 +1478,8 @@ VisualScriptExpression::VisualScriptExpression() {
 	output_type = Variant::NIL;
 	expression_dirty = true;
 	error_set = true;
-	root = NULL;
-	nodes = NULL;
+	root = nullptr;
+	nodes = nullptr;
 	sequenced = false;
 }
 
diff --git a/modules/visual_script/visual_script_expression.h b/modules/visual_script/visual_script_expression.h
index d131713ef0..61b50ff99d 100644
--- a/modules/visual_script/visual_script_expression.h
+++ b/modules/visual_script/visual_script_expression.h
@@ -138,7 +138,7 @@ class VisualScriptExpression : public VisualScriptNode {
 
 		Type type;
 
-		ENode() { next = NULL; }
+		ENode() { next = nullptr; }
 		virtual ~ENode() {
 			if (next) {
 				memdelete(next);
diff --git a/modules/visual_script/visual_script_func_nodes.cpp b/modules/visual_script/visual_script_func_nodes.cpp
index 011432ef39..3b6ae369ae 100644
--- a/modules/visual_script/visual_script_func_nodes.cpp
+++ b/modules/visual_script/visual_script_func_nodes.cpp
@@ -58,7 +58,7 @@ bool VisualScriptFunctionCall::has_input_sequence_port() const {
 static Node *_find_script_node(Node *p_edited_scene, Node *p_current_node, const Ref<Script> &script) {
 
 	if (p_edited_scene != p_current_node && p_current_node->get_owner() != p_edited_scene)
-		return NULL;
+		return nullptr;
 
 	Ref<Script> scr = p_current_node->get_script();
 
@@ -71,7 +71,7 @@ static Node *_find_script_node(Node *p_edited_scene, Node *p_current_node, const
 			return n;
 	}
 
-	return NULL;
+	return nullptr;
 }
 
 #endif
@@ -80,33 +80,33 @@ Node *VisualScriptFunctionCall::_get_base_node() const {
 #ifdef TOOLS_ENABLED
 	Ref<Script> script = get_visual_script();
 	if (!script.is_valid())
-		return NULL;
+		return nullptr;
 
 	MainLoop *main_loop = OS::get_singleton()->get_main_loop();
 	SceneTree *scene_tree = Object::cast_to<SceneTree>(main_loop);
 
 	if (!scene_tree)
-		return NULL;
+		return nullptr;
 
 	Node *edited_scene = scene_tree->get_edited_scene_root();
 
 	if (!edited_scene)
-		return NULL;
+		return nullptr;
 
 	Node *script_node = _find_script_node(edited_scene, edited_scene, script);
 
 	if (!script_node)
-		return NULL;
+		return nullptr;
 
 	if (!script_node->has_node(base_path))
-		return NULL;
+		return nullptr;
 
 	Node *path_to = script_node->get_node(base_path);
 
 	return path_to;
 #else
 
-	return NULL;
+	return nullptr;
 #endif
 }
 
@@ -955,34 +955,34 @@ Node *VisualScriptPropertySet::_get_base_node() const {
 #ifdef TOOLS_ENABLED
 	Ref<Script> script = get_visual_script();
 	if (!script.is_valid())
-		return NULL;
+		return nullptr;
 
 	MainLoop *main_loop = OS::get_singleton()->get_main_loop();
 
 	SceneTree *scene_tree = Object::cast_to<SceneTree>(main_loop);
 
 	if (!scene_tree)
-		return NULL;
+		return nullptr;
 
 	Node *edited_scene = scene_tree->get_edited_scene_root();
 
 	if (!edited_scene)
-		return NULL;
+		return nullptr;
 
 	Node *script_node = _find_script_node(edited_scene, edited_scene, script);
 
 	if (!script_node)
-		return NULL;
+		return nullptr;
 
 	if (!script_node->has_node(base_path))
-		return NULL;
+		return nullptr;
 
 	Node *path_to = script_node->get_node(base_path);
 
 	return path_to;
 #else
 
-	return NULL;
+	return nullptr;
 #endif
 }
 
@@ -1021,7 +1021,7 @@ void VisualScriptPropertySet::_adjust_input_index(PropertyInfo &pinfo) const {
 
 		Variant v;
 		Callable::CallError ce;
-		v = Variant::construct(pinfo.type, NULL, 0, ce);
+		v = Variant::construct(pinfo.type, nullptr, 0, ce);
 		Variant i = v.get(index);
 		pinfo.type = i.get_type();
 	}
@@ -1168,7 +1168,7 @@ void VisualScriptPropertySet::_update_cache() {
 
 		Variant v;
 		Callable::CallError ce;
-		v = Variant::construct(basic_type, NULL, 0, ce);
+		v = Variant::construct(basic_type, nullptr, 0, ce);
 
 		List<PropertyInfo> pinfo;
 		v.get_property_list(&pinfo);
@@ -1185,7 +1185,7 @@ void VisualScriptPropertySet::_update_cache() {
 
 		StringName type;
 		Ref<Script> script;
-		Node *node = NULL;
+		Node *node = nullptr;
 
 		if (call_mode == CALL_MODE_NODE_PATH) {
 
@@ -1410,7 +1410,7 @@ void VisualScriptPropertySet::_validate_property(PropertyInfo &property) const {
 	if (property.name == "index") {
 
 		Callable::CallError ce;
-		Variant v = Variant::construct(type_cache.type, NULL, 0, ce);
+		Variant v = Variant::construct(type_cache.type, nullptr, 0, ce);
 		List<PropertyInfo> plist;
 		v.get_property_list(&plist);
 		String options = "";
@@ -1735,34 +1735,34 @@ Node *VisualScriptPropertyGet::_get_base_node() const {
 #ifdef TOOLS_ENABLED
 	Ref<Script> script = get_visual_script();
 	if (!script.is_valid())
-		return NULL;
+		return nullptr;
 
 	MainLoop *main_loop = OS::get_singleton()->get_main_loop();
 
 	SceneTree *scene_tree = Object::cast_to<SceneTree>(main_loop);
 
 	if (!scene_tree)
-		return NULL;
+		return nullptr;
 
 	Node *edited_scene = scene_tree->get_edited_scene_root();
 
 	if (!edited_scene)
-		return NULL;
+		return nullptr;
 
 	Node *script_node = _find_script_node(edited_scene, edited_scene, script);
 
 	if (!script_node)
-		return NULL;
+		return nullptr;
 
 	if (!script_node->has_node(base_path))
-		return NULL;
+		return nullptr;
 
 	Node *path_to = script_node->get_node(base_path);
 
 	return path_to;
 #else
 
-	return NULL;
+	return nullptr;
 #endif
 }
 
@@ -1876,7 +1876,7 @@ void VisualScriptPropertyGet::_update_cache() {
 
 		Variant v;
 		Callable::CallError ce;
-		v = Variant::construct(basic_type, NULL, 0, ce);
+		v = Variant::construct(basic_type, nullptr, 0, ce);
 
 		List<PropertyInfo> pinfo;
 		v.get_property_list(&pinfo);
@@ -1894,7 +1894,7 @@ void VisualScriptPropertyGet::_update_cache() {
 
 		StringName type;
 		Ref<Script> script;
-		Node *node = NULL;
+		Node *node = nullptr;
 
 		if (call_mode == CALL_MODE_NODE_PATH) {
 
@@ -2125,7 +2125,7 @@ void VisualScriptPropertyGet::_validate_property(PropertyInfo &property) const {
 	if (property.name == "index") {
 
 		Callable::CallError ce;
-		Variant v = Variant::construct(type_cache, NULL, 0, ce);
+		Variant v = Variant::construct(type_cache, nullptr, 0, ce);
 		List<PropertyInfo> plist;
 		v.get_property_list(&plist);
 		String options = "";
@@ -2501,7 +2501,7 @@ void register_visual_script_func_nodes() {
 		Variant::Type t = Variant::Type(i);
 		String type_name = Variant::get_type_name(t);
 		Callable::CallError ce;
-		Variant vt = Variant::construct(t, NULL, 0, ce);
+		Variant vt = Variant::construct(t, nullptr, 0, ce);
 		List<MethodInfo> ml;
 		vt.get_method_list(&ml);
 
diff --git a/modules/visual_script/visual_script_nodes.cpp b/modules/visual_script/visual_script_nodes.cpp
index 1b496dad32..97c2686cd5 100644
--- a/modules/visual_script/visual_script_nodes.cpp
+++ b/modules/visual_script/visual_script_nodes.cpp
@@ -1483,7 +1483,7 @@ void VisualScriptConstant::set_constant_type(Variant::Type p_type) {
 
 	type = p_type;
 	Callable::CallError ce;
-	value = Variant::construct(type, NULL, 0, ce);
+	value = Variant::construct(type, nullptr, 0, ce);
 	ports_changed_notify();
 	_change_notify();
 }
@@ -2548,7 +2548,7 @@ VisualScriptNodeInstance *VisualScriptSceneNode::instance(VisualScriptInstance *
 static Node *_find_script_node(Node *p_edited_scene, Node *p_current_node, const Ref<Script> &script) {
 
 	if (p_edited_scene != p_current_node && p_current_node->get_owner() != p_edited_scene)
-		return NULL;
+		return nullptr;
 
 	Ref<Script> scr = p_current_node->get_script();
 
@@ -2561,7 +2561,7 @@ static Node *_find_script_node(Node *p_edited_scene, Node *p_current_node, const
 			return n;
 	}
 
-	return NULL;
+	return nullptr;
 }
 
 #endif
@@ -4006,7 +4006,7 @@ void VisualScriptDeconstruct::_update_elements() {
 	elements.clear();
 	Variant v;
 	Callable::CallError ce;
-	v = Variant::construct(type, NULL, 0, ce);
+	v = Variant::construct(type, nullptr, 0, ce);
 
 	List<PropertyInfo> pinfo;
 	v.get_property_list(&pinfo);
diff --git a/modules/visual_script/visual_script_property_selector.cpp b/modules/visual_script/visual_script_property_selector.cpp
index d749e3257a..f57853078d 100644
--- a/modules/visual_script/visual_script_property_selector.cpp
+++ b/modules/visual_script/visual_script_property_selector.cpp
@@ -97,7 +97,7 @@ void VisualScriptPropertySelector::_update_search() {
 	for (List<StringName>::Element *E = base_list.front(); E; E = E->next()) {
 		List<MethodInfo> methods;
 		List<PropertyInfo> props;
-		TreeItem *category = NULL;
+		TreeItem *category = nullptr;
 		Ref<Texture2D> type_icons[Variant::VARIANT_MAX] = {
 			vbc->get_theme_icon("Variant", "EditorIcons"),
 			vbc->get_theme_icon("bool", "EditorIcons"),
@@ -196,7 +196,7 @@ void VisualScriptPropertySelector::_update_search() {
 			if (type != Variant::NIL) {
 				Variant v;
 				Callable::CallError ce;
-				v = Variant::construct(type, NULL, 0, ce);
+				v = Variant::construct(type, nullptr, 0, ce);
 				v.get_method_list(&methods);
 			} else {
 
@@ -264,7 +264,7 @@ void VisualScriptPropertySelector::_update_search() {
 			item->set_metadata(2, connecting);
 		}
 
-		if (category && category->get_children() == NULL) {
+		if (category && category->get_children() == nullptr) {
 			memdelete(category); //old category was unused
 		}
 	}
@@ -304,12 +304,12 @@ void VisualScriptPropertySelector::_update_search() {
 	}
 
 	TreeItem *selected_item = search_options->search_item_text(search_box->get_text());
-	if (!found && selected_item != NULL) {
+	if (!found && selected_item != nullptr) {
 		selected_item->select(0);
 		found = true;
 	}
 
-	get_ok()->set_disabled(root->get_children() == NULL);
+	get_ok()->set_disabled(root->get_children() == nullptr);
 }
 
 void VisualScriptPropertySelector::create_visualscript_item(const String &name, TreeItem *const root, const String &search_input, const String &text) {
@@ -481,7 +481,7 @@ void VisualScriptPropertySelector::_item_selected() {
 
 	List<String> *names = memnew(List<String>);
 	VisualScriptLanguage::singleton->get_registered_node_names(names);
-	if (names->find(name) != NULL) {
+	if (names->find(name) != nullptr) {
 		Ref<VisualScriptOperator> operator_node = VisualScriptLanguage::singleton->create_node_from_name(name);
 		if (operator_node.is_valid()) {
 			Map<String, DocData::ClassDoc>::Element *F = dd->class_list.find(operator_node->get_class_name());
@@ -536,7 +536,7 @@ void VisualScriptPropertySelector::select_method_from_base_type(const String &p_
 	selected = p_current;
 	type = Variant::NIL;
 	properties = false;
-	instance = NULL;
+	instance = nullptr;
 	virtuals_only = p_virtuals_only;
 
 	show_window(.5f);
@@ -561,7 +561,7 @@ void VisualScriptPropertySelector::select_from_base_type(const String &p_base, c
 	type = Variant::NIL;
 	properties = true;
 	visual_script_generic = false;
-	instance = NULL;
+	instance = nullptr;
 	virtuals_only = p_virtuals_only;
 
 	show_window(.5f);
@@ -585,7 +585,7 @@ void VisualScriptPropertySelector::select_from_script(const Ref<Script> &p_scrip
 	script = p_script->get_instance_id();
 	properties = true;
 	visual_script_generic = false;
-	instance = NULL;
+	instance = nullptr;
 	virtuals_only = false;
 
 	show_window(.5f);
@@ -607,7 +607,7 @@ void VisualScriptPropertySelector::select_from_basic_type(Variant::Type p_type,
 	type = p_type;
 	properties = true;
 	visual_script_generic = false;
-	instance = NULL;
+	instance = nullptr;
 	virtuals_only = false;
 
 	show_window(.5f);
@@ -628,7 +628,7 @@ void VisualScriptPropertySelector::select_from_action(const String &p_type, cons
 	type = Variant::NIL;
 	properties = false;
 	visual_script_generic = false;
-	instance = NULL;
+	instance = nullptr;
 	virtuals_only = false;
 
 	show_window(.5f);
@@ -670,7 +670,7 @@ void VisualScriptPropertySelector::select_from_visual_script(const String &p_bas
 	type = Variant::NIL;
 	properties = true;
 	visual_script_generic = true;
-	instance = NULL;
+	instance = nullptr;
 	virtuals_only = false;
 	show_window(.5f);
 	if (clear_text)
diff --git a/modules/visual_script/visual_script_yield_nodes.cpp b/modules/visual_script/visual_script_yield_nodes.cpp
index 858074742e..b300aec385 100644
--- a/modules/visual_script/visual_script_yield_nodes.cpp
+++ b/modules/visual_script/visual_script_yield_nodes.cpp
@@ -228,7 +228,7 @@ bool VisualScriptYieldSignal::has_input_sequence_port() const {
 static Node *_find_script_node(Node *p_edited_scene, Node *p_current_node, const Ref<Script> &script) {
 
 	if (p_edited_scene != p_current_node && p_current_node->get_owner() != p_edited_scene)
-		return NULL;
+		return nullptr;
 
 	Ref<Script> scr = p_current_node->get_script();
 
@@ -241,7 +241,7 @@ static Node *_find_script_node(Node *p_edited_scene, Node *p_current_node, const
 			return n;
 	}
 
-	return NULL;
+	return nullptr;
 }
 
 #endif
@@ -250,33 +250,33 @@ Node *VisualScriptYieldSignal::_get_base_node() const {
 #ifdef TOOLS_ENABLED
 	Ref<Script> script = get_visual_script();
 	if (!script.is_valid())
-		return NULL;
+		return nullptr;
 
 	MainLoop *main_loop = OS::get_singleton()->get_main_loop();
 	SceneTree *scene_tree = Object::cast_to<SceneTree>(main_loop);
 
 	if (!scene_tree)
-		return NULL;
+		return nullptr;
 
 	Node *edited_scene = scene_tree->get_edited_scene_root();
 
 	if (!edited_scene)
-		return NULL;
+		return nullptr;
 
 	Node *script_node = _find_script_node(edited_scene, edited_scene, script);
 
 	if (!script_node)
-		return NULL;
+		return nullptr;
 
 	if (!script_node->has_node(base_path))
-		return NULL;
+		return nullptr;
 
 	Node *path_to = script_node->get_node(base_path);
 
 	return path_to;
 #else
 
-	return NULL;
+	return nullptr;
 #endif
 }
 
@@ -516,7 +516,7 @@ public:
 		} else {
 			//yield
 
-			Object *object = NULL;
+			Object *object = nullptr;
 
 			switch (call_mode) {