let snow = [];

let gravity;

​

let zOff = 0;

​

let wind;

​

let spritesheet;

let textures = [];

​

function preload() {

  spritesheet = loadImage("flakes32.png");

}

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  gravity = createVector(0, 0.2);

  for (let x = 0; x < spritesheet.width; x += 32) {

    for (let y = 0; y < spritesheet.height; y += 32) {

      let img = spritesheet.get(x, y, 32, 32);

      textures.push(img);

    }

  }

  for (let i = 0; i < 400; i++) {

    let x = random(width);

    let y = random(height);

    let design = random(textures);

    snow.push(new Snowflake(x, y, design));

  }

}

​

function draw() {

  background(0);

​

  // let wx = map(mouseX, 0, width, -0.05, 0.05);

  // let wind = createVector(wx, 0);

​

  zOff += 0.1;

​

  for (flake of snow) {

    let xOff = flake.pos.x / width;

    let yOff = flake.pos.y / height;

    let wAngle = noise(xOff, yOff, zOff) * TWO_PI;

    let wind = p5.Vector.fromAngle(wAngle);

    wind.mult(0.1);

​

    flake.applyForce(gravity);

    flake.applyForce(wind);

    flake.update();

    flake.render();

  }

}

​