<!DOCTYPE HTML>
<html>
<head>
<title>proton.js-game-fireworks</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 {
font-family: Monospace;
background-color: #f0f0f0;
margin: 0px;
overflow: hidden;
}
#testCanvas {
background: #000000;
}
</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;
main();
function main() {
canvas = document.getElementById("testCanvas");
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
context = canvas.getContext('2d');
//context.globalCompositeOperation = "lighter";
addStats();
createProton();
tick();
}
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(image) {
proton = new Proton;
emitter = new Proton.Emitter();
emitter.rate = new Proton.Rate(new Proton.Span(1, 3), 1);
emitter.addInitialize(new Proton.Mass(1));
emitter.addInitialize(new Proton.Radius(2, 4));
emitter.addInitialize(new Proton.P(new Proton.LineZone(10, canvas.height, canvas.width - 10, canvas.height)));
emitter.addInitialize(new Proton.Life(1, 1.5));
emitter.addInitialize(new Proton.V(new Proton.Span(4, 6), new Proton.Span(0, 0, true), 'polar'));
emitter.addBehaviour(new Proton.Gravity(1));
emitter.addBehaviour(new Proton.Color('#ff0000', 'random'));
emitter.emit();
proton.addEmitter(emitter);
renderer = new Proton.CanvasRenderer(canvas);
renderer.onProtonUpdate = function() {
context.fillStyle = "rgba(0, 0, 0, 0.1)";
context.fillRect(0, 0, canvas.width, canvas.height);
};
proton.addRenderer(renderer);
////NOTICE :you can only use two emitters do this effect.In this demo I use more emitters want to test the emtter's life
proton.addEventListener(Proton.PARTICLE_DEAD, function(particle) {
if (Math.random() < .7)
createFirstEmitter(particle);
else
createSecondEmitter(particle);
});
}
function createFirstEmitter(particle) {
var subemitter = new Proton.Emitter();
subemitter.rate = new Proton.Rate(new Proton.Span(250, 300), 1);
subemitter.addInitialize(new Proton.Mass(1));
subemitter.addInitialize(new Proton.Radius(1, 2));
subemitter.addInitialize(new Proton.Life(1, 3));
subemitter.addInitialize(new Proton.V(new Proton.Span(2, 4), new Proton.Span(0, 360), 'polar'));
subemitter.addBehaviour(new Proton.RandomDrift(10, 10, .05));
subemitter.addBehaviour(new Proton.Alpha(1, 0));
subemitter.addBehaviour(new Proton.Gravity(3));
var color = Math.random() > .3 ? Proton.MathUtils.randomColor() : 'random';
subemitter.addBehaviour(new Proton.Color(color));
subemitter.p.x = particle.p.x;
subemitter.p.y = particle.p.y;
subemitter.emit('once', true);
proton.addEmitter(subemitter);
}
function createSecondEmitter(particle) {
var subemitter = new Proton.Emitter();
subemitter.rate = new Proton.Rate(new Proton.Span(100, 120), 1);
subemitter.addInitialize(new Proton.Mass(1));
subemitter.addInitialize(new Proton.Radius(4, 8));
subemitter.addInitialize(new Proton.Life(1, 2));
subemitter.addInitialize(new Proton.V([1, 2], new Proton.Span(0, 360), 'polar'));
subemitter.addBehaviour(new Proton.Alpha(1, 0));
subemitter.addBehaviour(new Proton.Scale(1, .1));
subemitter.addBehaviour(new Proton.Gravity(1));
var color = Proton.MathUtils.randomColor();
subemitter.addBehaviour(new Proton.Color(color));
subemitter.p.x = particle.p.x;
subemitter.p.y = particle.p.y;
subemitter.emit('once', true);
proton.addEmitter(subemitter);
}
function tick() {
requestAnimationFrame(tick);
stats.begin();
proton.update();
stats.end();
}
</script>
</body>
</html>