@smoud/tiny/examples/jsm/particles/Smoke.js

Fast and tiny JavaScript library for HTML5 game and playable ads creation.

export default class SmokeParticle extends Tiny.Particle {
    constructor(emitter) {
        super(emitter);
    }

    update(time, delta) {
        this.scale.set(Math.min(time / 1000, 0.7));
        this.alpha = Math.min(time / 1000, 1);

        this.y -= this.yspeed * delta;
        this.x += this.xspeed * delta;
        this.rotation += this.rotationsp;
    }

    onEmit() {
        this.xspeed = Tiny.rnd(-4, 4) * 0.05;
        this.yspeed = Tiny.rnd(2, 10) * 0.05;
        this.rotationsp = Math.random() * 0.02 - 0.01;
    }

    draw(context, resolution) {
        context.fillRect(0, 0, 100 * resolution, 100 * resolution);

        // context.beginPath();
        // context.arc(0, 0, 100, 0, 2 * Math.PI, false);
        // context.fill();
    }
}