Add Ctrl + R keyboard shortcut to restart particle emission in the editor

Restarting particle animation frequently is often done in the VFX
tweaking process.

This shortcut is available for both GPUParticles and CPUParticles,
in 2D and 3D.

Author: Calinou

editor/editor_node.cpp

@@ -6302,6 +6302,9 @@ EditorNode::EditorNode() {
 	ED_SHORTCUT("editor/group_selected_nodes", TTR("Group Selected Node(s)"), KeyModifierMask::CMD_OR_CTRL | Key::G);
 	ED_SHORTCUT("editor/ungroup_selected_nodes", TTR("Ungroup Selected Node(s)"), KeyModifierMask::CMD_OR_CTRL | KeyModifierMask::SHIFT | Key::G);
 
+	// Used in the GPUParticles/CPUParticles 2D/3D editor plugins.
+	ED_SHORTCUT("particles/restart_emission", TTR("Restart Emission"), KeyModifierMask::CTRL | Key::R);
+
 	FileAccess::set_backup_save(EDITOR_GET("filesystem/on_save/safe_save_on_backup_then_rename"));
 
 	_update_vsync_mode();

editor/plugins/cpu_particles_2d_editor_plugin.cpp

@@ -33,6 +33,7 @@
 #include "canvas_item_editor_plugin.h"
 #include "core/io/image_loader.h"
 #include "editor/editor_node.h"
+#include "editor/editor_settings.h"
 #include "editor/editor_undo_redo_manager.h"
 #include "editor/gui/editor_file_dialog.h"
 #include "editor/scene_tree_dock.h"
@@ -268,7 +269,7 @@ CPUParticles2DEditorPlugin::CPUParticles2DEditorPlugin() {
 	toolbar->hide();
 
 	menu = memnew(MenuButton);
-	menu->get_popup()->add_item(TTR("Restart"), MENU_RESTART);
+	menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("particles/restart_emission"), MENU_RESTART);
 	menu->get_popup()->add_item(TTR("Load Emission Mask"), MENU_LOAD_EMISSION_MASK);
 	menu->get_popup()->add_item(TTR("Convert to GPUParticles2D"), MENU_CONVERT_TO_GPU_PARTICLES);
 	menu->set_text(TTR("CPUParticles2D"));

editor/plugins/cpu_particles_3d_editor_plugin.cpp

@@ -31,6 +31,7 @@
 #include "cpu_particles_3d_editor_plugin.h"
 
 #include "editor/editor_node.h"
+#include "editor/editor_settings.h"
 #include "editor/editor_undo_redo_manager.h"
 #include "editor/gui/scene_tree_editor.h"
 #include "editor/plugins/node_3d_editor_plugin.h"
@@ -168,7 +169,7 @@ CPUParticles3DEditor::CPUParticles3DEditor() {
 	particles_editor_hb->hide();
 
 	options->set_text(TTR("CPUParticles3D"));
-	options->get_popup()->add_item(TTR("Restart"), MENU_OPTION_RESTART);
+	options->get_popup()->add_shortcut(ED_GET_SHORTCUT("particles/restart_emission"), MENU_OPTION_RESTART);
 	options->get_popup()->add_item(TTR("Generate AABB"), MENU_OPTION_GENERATE_AABB);
 	options->get_popup()->add_item(TTR("Create Emission Points From Node"), MENU_OPTION_CREATE_EMISSION_VOLUME_FROM_NODE);
 	options->get_popup()->add_item(TTR("Convert to GPUParticles3D"), MENU_OPTION_CONVERT_TO_GPU_PARTICLES);

editor/plugins/gpu_particles_2d_editor_plugin.cpp

@@ -33,6 +33,7 @@
 #include "canvas_item_editor_plugin.h"
 #include "core/io/image_loader.h"
 #include "editor/editor_node.h"
+#include "editor/editor_settings.h"
 #include "editor/editor_undo_redo_manager.h"
 #include "editor/gui/editor_file_dialog.h"
 #include "editor/scene_tree_dock.h"
@@ -370,7 +371,7 @@ GPUParticles2DEditorPlugin::GPUParticles2DEditorPlugin() {
 	toolbar->hide();
 
 	menu = memnew(MenuButton);
-	menu->get_popup()->add_item(TTR("Restart"), MENU_RESTART);
+	menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("particles/restart_emission"), MENU_RESTART);
 	menu->get_popup()->add_item(TTR("Generate Visibility Rect"), MENU_GENERATE_VISIBILITY_RECT);
 	menu->get_popup()->add_item(TTR("Load Emission Mask"), MENU_LOAD_EMISSION_MASK);
 	//	menu->get_popup()->add_item(TTR("Clear Emission Mask"), MENU_CLEAR_EMISSION_MASK);

editor/plugins/gpu_particles_3d_editor_plugin.cpp

@@ -32,6 +32,7 @@
 
 #include "core/io/resource_loader.h"
 #include "editor/editor_node.h"
+#include "editor/editor_settings.h"
 #include "editor/editor_undo_redo_manager.h"
 #include "editor/plugins/node_3d_editor_plugin.h"
 #include "editor/scene_tree_dock.h"
@@ -414,7 +415,7 @@ GPUParticles3DEditor::GPUParticles3DEditor() {
 	particles_editor_hb->hide();
 
 	options->set_text(TTR("GPUParticles3D"));
-	options->get_popup()->add_item(TTR("Restart"), MENU_OPTION_RESTART);
+	options->get_popup()->add_shortcut(ED_GET_SHORTCUT("particles/restart_emission"), MENU_OPTION_RESTART);
 	options->get_popup()->add_item(TTR("Generate AABB"), MENU_OPTION_GENERATE_AABB);
 	options->get_popup()->add_item(TTR("Create Emission Points From Node"), MENU_OPTION_CREATE_EMISSION_VOLUME_FROM_NODE);
 	options->get_popup()->add_item(TTR("Convert to CPUParticles3D"), MENU_OPTION_CONVERT_TO_CPU_PARTICLES);