Cursor Trail (90s)

by Angelica

HTML

<div class="info">
  <b><a href="https://github.com/tholman/90s-cursor-effects" target="_blank">90's cursor effects collection</a></b><br>
  - Emoji Cursor
</div>

JavaScript

/*!
 * Emoji Cursor.js
 * - 90's cursors collection
 * -- https://github.com/tholman/90s-cursor-effects
 * -- https://codepen.io/tholman/full/rxJpdQ
 */

(function emojiCursor() {
  
  var possibleEmoji = ["🧁", "🌈", "🦋"]
  var width = window.innerWidth;
  var height = window.innerHeight;
  var cursor = {x: width/2, y: width/2};
  var particles = [];
  
  function init() {
    bindEvents();
    loop();
  }
  
  // Bind events that are needed
  function bindEvents() {
    document.addEventListener('mousemove', onMouseMove);
    document.addEventListener('touchmove', onTouchMove);
    document.addEventListener('touchstart', onTouchMove);
    
    window.addEventListener('resize', onWindowResize);
  }
  
  function onWindowResize(e) {
    width = window.innerWidth;
    height = window.innerHeight;
  }
  
  function onTouchMove(e) {
    if( e.touches.length > 0 ) {
      for( var i = 0; i < e.touches.length; i++ ) {
        addParticle( e.touches[i].clientX, e.touches[i].clientY, possibleEmoji[Math.floor(Math.random()*possibleEmoji.length)]);
      }
    }
  }
  
  function onMouseMove(e) {    
    cursor.x = e.clientX;
    cursor.y = e.clientY;
    
    addParticle( cursor.x, cursor.y, possibleEmoji[Math.floor(Math.random()*possibleEmoji.length)]);
  }
  
  function addParticle(x, y, character) {
    var particle = new Particle();
    particle.init(x, y, character);
    particles.push(particle);
  }
  
  function updateParticles() {
    
    // Updated
    for( var i = 0; i < particles.length; i++ ) {
      particles[i].update();
    }
    
    // Remove dead particles
    for( var i = particles.length -1; i >= 0; i-- ) {
      if( particles[i].lifeSpan < 0 ) {
        particles[i].die();
        particles.splice(i, 1);
      }
    }
    
  }
  
  function loop() {
    requestAnimationFrame(loop);
    updateParticles();
  }
  
  /**
   * Particles
   */
  
  function Particle() {

    this.lifeSpan = 80; //ms
    this.initialStyles ={
      "position": "absolute",
  ...