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

[Calinou]

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.

Ctrl + R is currently only used in the script editor, so we can safely use it in the 2D/3D editors.

• See Implement particle seek request and seed options. #92089 (which inspired me to add this shortcut).

[QbieShay]

Is ctrl+space available? I'd like to have a shortcut to pause particles as well. So play/pause, restart, and frameskip too (, and . probably for frameskip)
would those work?

[Calinou]

I'd like to have a shortcut to pause particles as well. So play/pause, restart, and frameskip too (, and . probably for frameskip)

Particle pausing can be implemented by toggling Speed Scale between its previous value and 0.0, but the issue is that this value change would be saved to the scene file. We'd need a separate method for temporarily pausing particles in a way that isn't serialized to the scene file.

The same goes for frameskip once seeking is implemented.

[KoBeWi]

You should define the shortcut once and use ED_GET_SHORTCUT.

[Calinou]

You should define the shortcut once and use ED_GET_SHORTCUT.

I tried to do that in EditorNode's constructor, but I got "unknown shortcut" errors when I select a particles node.

[QbieShay]

@Calinou yep! for now pause doesn't make sense, but i mentioned it in case we can reserve it ^^

[KoBeWi]

I tried to do that in EditorNode's constructor, but I got "unknown shortcut" errors when I select a particles node.

It should work if you define them right after EditorSettings are created.

godot/editor/editor_node.cpp

Lines 6295 to 6298 in aaa4560

	// Load settings.
	if (!EditorSettings::get_singleton()) {
	EditorSettings::create();
	}

[Calinou]

It should work if you define them right after EditorSettings are created.

I've amended the PR with this change, thanks 🙂

[KoBeWi]

Will conflict with #92223

[akien-mga]

Needs rebase after #92223.

[akien-mga]

Thanks!