<!DOCTYPE HTML>
<html>
<head>
<title>Pixi Balls by Photon Storm</title>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1 maximum-scale=1 user-scalable=0" />
<link rel="stylesheet" href="storm.css">
<script src="../../bin/pixi.dev.js"></script>
</head>
<body>
<a href="http://www.photonstorm.com"><img src="assets/photonstorm.png" width="121" height="18" id="photonstorm" title="Photon Storm" /></a>
<a href="http://www.html5gamedevs.com/topic/59-pixijs-has-landed/"><img src="assets/pixi.png" width="56" height="22" id="pixi" title="pixi.js" /></a>
<input type="button" id="rnd" value="Randomise" />
<div id="sx">SX: 0<br />SY: 0</div>
<script>
window.addEventListener('orientationchange',resize,false);
window.addEventListener('resize',resize,false);
document.addEventListener('DOMContentLoaded', start, false);
// Globals, globals everywhere and not a drop to drink
var w = 1024;
var h = 768;
var starCount = 2500;
var sx = 1.0 + (Math.random() / 20);
var sy = 1.0 + (Math.random() / 20);
var slideX = w / 2;
var slideY = h / 2;
var stars = [];
var renderer;
var stage;
function start() {
var ballTexture = new PIXI.Texture.fromImage("assets/bubble_32x32.png");
renderer = PIXI.autoDetectRenderer(w, h);
stage = new PIXI.Stage();
document.body.appendChild(renderer.view);
for (var i = 0; i < starCount; i++)
{
var tempBall = new PIXI.Sprite(ballTexture);
tempBall.position.x = (Math.random() * w) - slideX;
tempBall.position.y = (Math.random() * h) - slideY;
tempBall.anchor.x = 0.5;
tempBall.anchor.y = 0.5;
stars.push({ sprite: tempBall, x: tempBall.position.x, y: tempBall.position.y });
stage.addChild(tempBall);
}
document.getElementById('rnd').onclick = newWave;
document.getElementById('sx').innerHTML = 'SX: ' + sx + '<br />SY: ' + sy;
resize();
requestAnimFrame(update);
}
function newWave () {
sx = 1.0 + (Math.random() / 20);
sy = 1.0 + (Math.random() / 20);
document.getElementById('sx').innerHTML = 'SX: ' + sx + '<br />SY: ' + sy;
}
function resize()
{
w = window.innerWidth - 16;
h = window.innerHeight - 16;
slideX = w / 2;
slideY = h / 2;
renderer.resize(w, h);
}
function update()
{
for (var i = 0; i < starCount; i++)
{
stars[i].sprite.position.x = stars[i].x + slideX;
stars[i].sprite.position.y = stars[i].y + slideY;
stars[i].x = stars[i].x * sx;
stars[i].y = stars[i].y * sy;
if (stars[i].x > w)
{
stars[i].x = stars[i].x - w;
}
else if (stars[i].x < -w)
{
stars[i].x = stars[i].x + w;
}
if (stars[i].y > h)
{
stars[i].y = stars[i].y - h;
}
else if (stars[i].y < -h)
{
stars[i].y = stars[i].y + h;
}
}
renderer.render(stage);
requestAnimFrame(update);
}
</script>
</body>
</html>
