Spawn and fade particles on trigger

RICHARD COGGIN

Snap Lens Network Member Lens Studio Team

November 04, 2019 12:36

Hi there, I've been scouring the forum to get the desired effect, but can't seem to find it.

What I would like to do is trigger particles from 0 with an object button and they appear after 2 seconds. Then have the ability to make them fade and disappear back to 0 after a few seconds more.

I have tried using a file that was uploaded which used a lerp function to trigger the particles, but can't work out how to adapt the trigger functions...

Any help much appreciated...

Olha

Snap Lens Network Member Lens Studio Team

November 06, 2019 21:41
Edited

Hi, Richard!

I've slightly modified example from this post for your needs.

I am using delayedCallbackEvent

Please look at the example project here

//@input float startDelay = 1.0
//@input float spawnDuration = 3.0
//@input Component.ScriptComponent particleController

script.createEvent("TapEvent").bind(function (eventData) {
    print("Tapped Button")
    delayedStopEvent.enabled = false;//disabling delayedStopEvent if we clicked start again before particles were stopped
    delayedStartEvent.reset(script.startDelay);
});

var delayedStartEvent = script.createEvent("DelayedCallbackEvent");
delayedStartEvent.bind(function (eventData) {
    print("Particles Started")
    script.particleController.api.startParticles();
    delayedStopEvent.enabled = true;
    delayedStopEvent.reset(script.spawnDuration);
});

var delayedStopEvent = script.createEvent("DelayedCallbackEvent");
delayedStopEvent.bind(function (eventData) {
    print("Particles Stopped")
    script.particleController.api.stopParticles();
});

Best

Olha

Spawn and fade particles on trigger

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