<!DOCTYPE HTML>
<html>
<head>
<title>Sprite Batch</title>
<style>
body {
margin: 0;
padding: 0;
background-color: #000000;
}
.rendererView {
position: absolute;
display: block;
width: 100%;
height: 100%;
}
</style>
<script src="../../bin/pixi.dev.js"></script>
</head>
<body>
<script>
var viewWidth = 800;
var viewHeight = 600;
// Create a pixi renderer
var renderer = PIXI.autoDetectRenderer(viewWidth, viewHeight);
renderer.view.className = "rendererView";
// add render view to DOM
document.body.appendChild(renderer.view);
// create an new instance of a pixi stage
var stage = new PIXI.Stage(0xFFFFFF);
var sprites = new PIXI.SpriteBatch();
stage.addChild(sprites);
var tints = [0xFFFFFF, 0xFFFBEE, 0xFFEEEE, 0xFADEED, 0xE8D4CD];
// create an array to store a refference to the fish in the pond
var dudeArray = [];
var totalDudes = renderer instanceof PIXI.WebGLRenderer ? 10000 : 100;
for (var i = 0; i < totalDudes; i++)
{
// create a new Sprite that uses the image name that we just generated as its source
var dude = PIXI.Sprite.fromImage("tinyMaggot.png");
dude.tint = Math.random() * 0xE8D4CD;
// set the anchor point so the the dude texture is centerd on the sprite
dude.anchor.x = dude.anchor.y = 0.5;
// set a random scale for the dude - no point them all being the same size!
dude.scale.x = dude.scale.y = 0.8 + Math.random() * 0.3;
// finally lets set the dude to be a random position..
dude.x = Math.random() * viewWidth;
dude.y = Math.random() * viewHeight;
// create some extra properties that will control movement
dude.tint = Math.random() * 0x808080;
// create a random direction in radians. This is a number between 0 and PI*2 which is the equivalent of 0 - 360 degrees
dude.direction = Math.random() * Math.PI * 2;
// this number will be used to modify the direction of the dude over time
dude.turningSpeed = Math.random() - 0.8;
// create a random speed for the dude between 0 - 2
dude.speed = (2 + Math.random() * 2) * 0.2;
dude.offset = Math.random() * 100;
// finally we push the dude into the dudeArray so it it can be easily accessed later
dudeArray.push(dude);
sprites.addChild(dude);
}
// create a bounding box box for the little dudes
var dudeBoundsPadding = 100;
var dudeBounds = new PIXI.Rectangle(-dudeBoundsPadding,
-dudeBoundsPadding,
viewWidth + dudeBoundsPadding * 2,
viewHeight + dudeBoundsPadding * 2);
var tick = 0;
function animate()
{
// iterate through the dude and update the position
for (var i = 0; i < dudeArray.length; i++)
{
var dude = dudeArray[i];
dude.scale.y = 0.95 + Math.sin(tick + dude.offset) * 0.05
dude.direction += dude.turningSpeed * 0.01;
dude.position.x += Math.sin(dude.direction) * (dude.speed * dude.scale.y);
dude.position.y += Math.cos(dude.direction) * (dude.speed * dude.scale.y);
dude.rotation = -dude.direction + Math.PI;
// wrap the dudes by testing their bounds..
if (dude.position.x < dudeBounds.x)
dude.position.x += dudeBounds.width;
else if (dude.position.x > dudeBounds.x + dudeBounds.width)
dude.position.x -= dudeBounds.width;
if (dude.position.y < dudeBounds.y)
dude.position.y += dudeBounds.height;
else if (dude.position.y > dudeBounds.y + dudeBounds.height)
dude.position.y -= dudeBounds.height;
}
// increment the ticker
tick += 0.1;
// time to render the stage !
renderer.render(stage);
// request another animation frame..
requestAnimationFrame(animate);
}
requestAnimationFrame(animate);
</script>
</body>
</html>
