6 files changed, 77 insertions, 7 deletions

diff --git a/core/script_language.cpp b/core/script_language.cpp
index 97758ced66..ee8589d76a 100644
--- a/core/script_language.cpp
+++ b/core/script_language.cpp
@@ -50,6 +50,52 @@ void Script::_notification(int p_what) {
 	}
 }
 
+Variant Script::_get_property_default_value(const StringName &p_property) {
+	Variant ret;
+	get_property_default_value(p_property, ret);
+	return ret;
+}
+
+Array Script::_get_script_property_list() {
+	Array ret;
+	List<PropertyInfo> list;
+	get_script_property_list(&list);
+	for (List<PropertyInfo>::Element *E = list.front(); E; E = E->next()) {
+		ret.append(E->get().operator Dictionary());
+	}
+	return ret;
+}
+
+Array Script::_get_script_method_list() {
+	Array ret;
+	List<MethodInfo> list;
+	get_script_method_list(&list);
+	for (List<MethodInfo>::Element *E = list.front(); E; E = E->next()) {
+		ret.append(E->get().operator Dictionary());
+	}
+	return ret;
+}
+
+Array Script::_get_script_signal_list() {
+	Array ret;
+	List<MethodInfo> list;
+	get_script_signal_list(&list);
+	for (List<MethodInfo>::Element *E = list.front(); E; E = E->next()) {
+		ret.append(E->get().operator Dictionary());
+	}
+	return ret;
+}
+
+Dictionary Script::_get_script_constant_map() {
+	Dictionary ret;
+	Map<StringName, Variant> map;
+	get_constants(&map);
+	for (Map<StringName, Variant>::Element *E = map.front(); E; E = E->next()) {
+		ret[E->key()] = E->value();
+	}
+	return ret;
+}
+
 void Script::_bind_methods() {
 
 	ClassDB::bind_method(D_METHOD("can_instance"), &Script::can_instance);
@@ -64,6 +110,12 @@ void Script::_bind_methods() {
 
 	ClassDB::bind_method(D_METHOD("has_script_signal", "signal_name"), &Script::has_script_signal);
 
+	ClassDB::bind_method(D_METHOD("get_script_property_list"), &Script::_get_script_property_list);
+	ClassDB::bind_method(D_METHOD("get_script_method_list"), &Script::_get_script_method_list);
+	ClassDB::bind_method(D_METHOD("get_script_signal_list"), &Script::_get_script_signal_list);
+	ClassDB::bind_method(D_METHOD("get_script_constant_map"), &Script::_get_script_constant_map);
+	ClassDB::bind_method(D_METHOD("get_property_default_value"), &Script::_get_property_default_value);
+
 	ClassDB::bind_method(D_METHOD("is_tool"), &Script::is_tool);
 
 	ADD_PROPERTY(PropertyInfo(Variant::STRING, "source_code", PROPERTY_HINT_NONE, "", 0), "set_source_code", "get_source_code");
diff --git a/core/script_language.h b/core/script_language.h
index dfb2e0ad31..1b4f1eb4cd 100644
--- a/core/script_language.h
+++ b/core/script_language.h
@@ -109,6 +109,12 @@ protected:
 	friend class PlaceHolderScriptInstance;
 	virtual void _placeholder_erased(PlaceHolderScriptInstance *p_placeholder) {}
 
+	Variant _get_property_default_value(const StringName &p_property);
+	Array _get_script_property_list();
+	Array _get_script_method_list();
+	Array _get_script_signal_list();
+	Dictionary _get_script_constant_map();
+
 public:
 	virtual bool can_instance() const = 0;
 
diff --git a/modules/gdscript/gdscript_editor.cpp b/modules/gdscript/gdscript_editor.cpp
index 925dbda620..b4c38e4d40 100644
--- a/modules/gdscript/gdscript_editor.cpp
+++ b/modules/gdscript/gdscript_editor.cpp
@@ -1936,9 +1936,18 @@ static void _find_identifiers_in_base(const GDScriptCompletionContext &p_context
 				Ref<GDScript> script = base_type.script_type;
 				if (script.is_valid()) {
 					if (!_static && !p_only_functions) {
-						for (const Set<StringName>::Element *E = script->get_members().front(); E; E = E->next()) {
-							ScriptCodeCompletionOption option(E->get().operator String(), ScriptCodeCompletionOption::KIND_MEMBER);
-							r_result.insert(option.display, option);
+						if (p_context.base && p_context.base->get_script_instance()) {
+							List<PropertyInfo> members;
+							p_context.base->get_script_instance()->get_property_list(&members);
+							for (List<PropertyInfo>::Element *E = members.front(); E; E = E->next()) {
+								ScriptCodeCompletionOption option(E->get().name, ScriptCodeCompletionOption::KIND_MEMBER);
+								r_result.insert(option.display, option);
+							}
+						} else {
+							for (const Set<StringName>::Element *E = script->get_members().front(); E; E = E->next()) {
+								ScriptCodeCompletionOption option(E->get().operator String(), ScriptCodeCompletionOption::KIND_MEMBER);
+								r_result.insert(option.display, option);
+							}
 						}
 					}
 					if (!p_only_functions) {
diff --git a/scene/animation/tween.cpp b/scene/animation/tween.cpp
index 2609924f33..0f7d4466c8 100644
--- a/scene/animation/tween.cpp
+++ b/scene/animation/tween.cpp
@@ -783,10 +783,12 @@ float Tween::get_speed_scale() const {
 }
 
 bool Tween::start() {
+
+	ERR_FAIL_COND_V_MSG(!is_inside_tree(), false, "Tween was not added to the SceneTree!");
+
 	// Are there any pending updates?
 	if (pending_update != 0) {
 		// Start the tweens after deferring
-		call_deferred("start");
 		return true;
 	}
 
diff --git a/scene/gui/control.cpp b/scene/gui/control.cpp
index 034e9266f6..174c2fce7d 100644
--- a/scene/gui/control.cpp
+++ b/scene/gui/control.cpp
@@ -2149,9 +2149,7 @@ bool Control::has_focus() const {
 
 void Control::grab_focus() {
 
-	if (!is_inside_tree()) {
-		ERR_FAIL_COND(!is_inside_tree());
-	}
+	ERR_FAIL_COND(!is_inside_tree());
 
 	if (data.focus_mode == FOCUS_NONE) {
 		WARN_PRINT("This control can't grab focus. Use set_focus_mode() to allow a control to get focus.");
diff --git a/scene/main/timer.cpp b/scene/main/timer.cpp
index 03d46fd28d..14cc705edb 100755
--- a/scene/main/timer.cpp
+++ b/scene/main/timer.cpp
@@ -107,6 +107,9 @@ bool Timer::has_autostart() const {
 }
 
 void Timer::start(float p_time) {
+
+	ERR_FAIL_COND_MSG(!is_inside_tree(), "Timer was not added to the SceneTree!");
+
 	if (p_time > 0) {
 		set_wait_time(p_time);
 	}