how do I animate a 2D particle emitter?

samuraidan

I have bubbles that are animated to pop and right now I'm doing it by adding children and removing them once the animation finishes. this feels like something a particle emitter is suited for, but I can't figure out how to animate the bubbles.

please help, all the relevant answers I found on my internet search were on the godot engine QA forums which have been 403'ing for months now

d2clon

Did you find solution for this? QA forums are back, even if in read-only mode

SnapCracklins

Honestly, I usually just program the particles/emission myself. I don’t like the rigidness of Godot’s particle emitter but the great thing about this engine is its easy to build your own. Sounds like you’ve already done most of the work. Getting an emitter node at this point is just an excuse to put it into the Inspector.

I usually just make my own particles, have them free themselves and let an area2d do the work for me. Make a few parameters/variables and use randomization and some RNG to control their size, speeds and behavior. I did this in my title Zen Games with the cherry blossom petals in menu.

samuraidan

oh yeah, I did figure this out. it's really strange and unintuitive. you have to use a spritesheet (it won't work any other way).

click on the particle emitter then under the inspector scroll down to canvasitem > material, give it a new material that's blank. then under that material click "particles animation" to on and give it the relevant H and V frames number.

finally you have to go back up to process material > animation and set speed min to at least 1.

SnapCracklins I am not nearly skilled enough at the moment to make my own particle emitter, and from what I understand the way I was doing it before is a lot less performant since they're just objects I keep adding and removing instead of particles.