<!DOCTYPE HTML>
<html>
<head>
<title>proton.js-behaviour-repulsion</title>
<meta name="viewport" id="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
<meta charset="utf-8">
<style type="text/css">
body {
background-color: #333333;
margin: 0px;
overflow: hidden;
-moz-user-select: none;
-webkit-user-select: none;
-ms-user-select: none;
-khtml-user-select: none;
user-select: none;
}
#testCanvas {
background: #000;
}
</style>
</head>
<body>
<canvas id="testCanvas"></canvas>
<script src="../../lib/requestAnimationFrame.min.js"></script>
<script src="../../lib/stats.min.js"></script>
<script src="//localhost:3001/build/proton.web.js"></script>
<script>
var canvas;
var context;
var proton;
var renderer;
var emitter;
var stats;
var mouseObj;
var attractionBehaviour, repulsionBehaviour, crossZoneBehaviour;
Main();
function Main() {
canvas = document.getElementById("testCanvas");
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
addStats();
createProton();
createRenderer();
tick();
canvas.addEventListener('mousedown', mousedownHandler, false);
canvas.addEventListener('mouseup', mouseupHandler, false);
canvas.addEventListener('mousemove', mousemoveHandler, false);
window.onresize = function(e) {
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
crossZoneBehaviour.reset(new Proton.RectZone(0, 0, canvas.width, canvas.height), 'cross');
}
}
function addStats() {
stats = new Stats();
stats.setMode(2);
stats.domElement.style.position = 'absolute';
stats.domElement.style.left = '0px';
stats.domElement.style.top = '0px';
document.body.appendChild(stats.domElement);
}
function createProton() {
proton = new Proton;
emitter = new Proton.Emitter();
emitter.damping = 0.0075;
emitter.rate = new Proton.Rate(600);
emitter.addInitialize(new Proton.Body('image/star.gif', 128, 128));
emitter.addInitialize(new Proton.Mass(1), new Proton.Radius(Proton.getSpan(5, 10)));
emitter.addInitialize(new Proton.Velocity(new Proton.Span(1, 3), new Proton.Span(0, 360), 'polar'));
mouseObj = {
x: canvas.width / 2,
y: canvas.height / 2
};
attractionBehaviour = new Proton.Attraction(mouseObj, 20, 1300);
repulsionBehaviour = new Proton.Repulsion(mouseObj, 30, 350);
crossZoneBehaviour = new Proton.CrossZone(new Proton.RectZone(0, 0, canvas.width, canvas.height), 'cross');
emitter.addBehaviour(attractionBehaviour, repulsionBehaviour, crossZoneBehaviour, new Proton.Color('random'));
emitter.addBehaviour(new Proton.Scale(Proton.getSpan(.1, .7)));
emitter.addBehaviour(new Proton.Rotate(Proton.getSpan(0, 180), Proton.getSpan(-5, 5), 'add'));
emitter.p.x = canvas.width / 2;
emitter.p.y = canvas.height / 2;
emitter.emit('once');
proton.addEmitter(emitter);
}
function mousedownHandler(e) {
attractionBehaviour.reset(mouseObj, 0, 0);
}
function mouseupHandler(e) {
attractionBehaviour.reset(mouseObj, 20, 1300);
}
function mousemoveHandler(e) {
if (e.layerX || e.layerX == 0) {
mouseObj.x = e.layerX;
mouseObj.y = e.layerY;
} else if (e.offsetX || e.offsetX == 0) {
mouseObj.x = e.offsetX;
mouseObj.y = e.offsetY;
}
}
function createRenderer() {
renderer = new Proton.WebGLRenderer(canvas);
renderer.blendFunc("SRC_ALPHA", "ONE")
proton.addRenderer(renderer);
}
function tick() {
requestAnimationFrame(tick);
stats.begin();
proton.update();
stats.end();
}
</script>
</body>
</html>