classes/class_gpuparticles2d

[giscus[bot]]

classes/class_gpuparticles2d

Inherits: Node2D< CanvasItem< Node< Object A 2D particle emitter. Description: 2D particle node used to create a variety of particle systems and effects. GPUParticles2D features an emitter that gen...

https://docs.godotengine.org/en/stable/classes/class_gpuparticles2d.html

[FoxyFox909]

Friendly reminder to free your particles if you are instantiating them via code and only want one-shot or play-once-and-go-away particle Nodes.

You can simply connect its own finished signal to its own queue_free method, even after setting emitting to true, e.g. new_particle_node.finished.connect(new_particle_node.queue_free)

[MelPeslier]

How will you do to load an emmision mask from a viewport ?

[MelPeslier]

oups, sorry, questions not here

[Calinou]

You can use ViewportTexture for this, but you may run into a similar issue as decals and light projectors using ViewportTextures (in the sense that the texture won't be updated in real-time out of the box). If you run into this problem, you can force it to update every frame using the workaround listed in the issue I linked, but this can be slow with large textures.

[MelPeslier]

Thanks,

I found how to do it,
I capture an image, see for each pixel if it is visible, and then I transfer this data as an image to the particle shader converted to a shadermaterial !

[hrk4649]

To use emit_particles(), you need to change the project rendering method to Forward+.

[Calinou]

Pull request opened:

• Document GPUParticles.emit_particle() only working on Forward+ and Mobile godot#100369