<!DOCTYPE HTML>
<html>
<head>
<title>pixi.js example 2 loading a sprite sheet</title>
<style>
body {
margin: 0;
padding: 0;
background-color: #000000;
}
</style>
<script src="../../bin/pixi.dev.js"></script>
</head>
<body>
<script>
// create an array of assets to load, in the form of json files generated from TexturePacker
var assetsToLoader = [ "SpriteSheet.json"];
// create a new loader
loader = new PIXI.AssetLoader(assetsToLoader);
// use callback
loader.onComplete = onAssetsLoaded;
// begin load
loader.load();
// holder to store aliens
var aliens = [];
var alienFrames = ["eggHead.png", "flowerTop.png", "helmlok.png", "skully.png"];
var count = 0;
// create an new instance of a pixi stage
var stage = new PIXI.Stage(0xFFFFFF);
// create a renderer instance.
var renderer = PIXI.autoDetectRenderer(800, 600);
// add the renderer view element to the DOM
document.body.appendChild(renderer.view);
// create an empty container
var alienContainer = new PIXI.DisplayObjectContainer();
alienContainer.position.x = 400;
alienContainer.position.y = 300;
stage.addChild(alienContainer);
function onAssetsLoaded()
{
// add a bunch of aliens with textures from image paths
for (var i = 0; i < 100; i++)
{
var frameName = alienFrames[i % 4];
// create an alien using the frame name..
var alien = PIXI.Sprite.fromFrame(frameName);
alien.tint = Math.random() * 0xFFFFFF;
/*
* fun fact for the day :)
* another way of doing the above would be
* var texture = PIXI.Texture.fromFrame(frameName);
* var alien = new PIXI.Sprite(texture);
*/
alien.position.x = Math.random() * 800 - 400;
alien.position.y = Math.random() * 600 - 300;
alien.anchor.x = 0.5;
alien.anchor.y = 0.5;
aliens.push(alien);
alienContainer.addChild(alien);
}
// start animating
requestAnimFrame(animate);
}
stage.mousedown = stage.touchstart = function()
{
alienContainer.cacheAsBitmap = !alienContainer.cacheAsBitmap;
// feel free to play with what's below
// var sprite = new PIXI.Sprite(alienContainer.generateTexture());
// stage.addChild(sprite);
// sprite.position.x = Math.random() * 800;
// sprite.position.y = Math.random() * 600;
}
function animate() {
// let's rotate the aliens a little bit
for (var i = 0; i < 100; i++)
{
var alien = aliens[i];
alien.rotation += 0.1;
}
count += 0.01;
alienContainer.scale.x = Math.sin(count);
alienContainer.scale.y = Math.sin(count);
alienContainer.rotation += 0.01;
// render the stage
renderer.render(stage);
requestAnimFrame(animate);
}
</script>
</body>
</html>
