// Daniel Shiffman

// http://natureofcode.com

​

// Array of Images for particle textures

​

let ps;

​

let imgs = [];

​

function preload() {

  imgs[0] = loadImage("data/emitter.png");

  imgs[1] = loadImage("data/particle.png");

  imgs[2] = loadImage("data/reflection.png");

}

​

function setup() {

  createCanvas(640, 240);

  ps = new ParticleSystem(imgs);

}

​

​

function draw() {

  // Try additive blending!

  blendMode(ADD);

  clear();

​

  background(0);

​

  // Additive blending!

  ps.addParticle(mouseX, mouseY);

​

​

  let up = createVector(0, -0.2);

  ps.applyForce(up);

​

  ps.update();

}