mirror of
https://github.com/photonstorm/phaser
synced 2024-11-23 21:24:09 +00:00
79 lines
1.5 KiB
JavaScript
79 lines
1.5 KiB
JavaScript
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var game = new Phaser.Game(800, 600, Phaser.CANVAS, 'phaser-example', { preload: preload, create: create, update: update, render: render });
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function preload() {
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game.load.image('ball', 'assets/sprites/shinyball.png');
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}
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var sprite;
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var particles = [];
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var bmd;
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var u = 0;
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var n = 0;
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var oldn = 0;
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var ad = 0;
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function create() {
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bmd = game.add.bitmapData(800, 600);
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for (var i = 0; i < 60; i++)
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{
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particles.push(new Phaser.Point(0, 0));
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}
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sprite = game.add.sprite(0, 0, bmd);
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}
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function mycircle(context, x, y, R, color) {
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//R = 64;
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context.fillStyle = color;
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context.beginPath();
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context.arc(x, y, R, 0, Math.PI * 2, true);
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context.closePath();
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context.fill();
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}
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function update() {
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bmd.clear();
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oldn = n;
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for (var t = 0; t < particles.length; t++)
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{
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var p = particles[t];
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// p.x = Math.sin(n) * 50 + Math.cos(n * 1.5) * 300;
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// p.y = Math.sin(n / 2) * 20 + Math.sin(n * 2) * 250;
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p.x = Math.cos(n) * 50 + Math.sin(n * 1.5) * 300;
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p.y = Math.cos(n / 2) * 20 + Math.cos(n * 2) * 250;
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var tx = p.x;
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var ty = p.y;
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bmd.context.globalCompositeOperation = 'xor';
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//mycircle(bmd.context, p.x + 400, p.y + 300, Math.sin(t * 360 / particles.length / 2 * Math.PI / 180) * 50, 'rgba(255, 255, 0, 1)');
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mycircle(bmd.context, p.x + 400, p.y + 300, Math.sin(t * 360 / particles.length / 2 * Math.PI / 180) * 50, 'rgba(255, 255, 0, 1)');
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n += 0.05;
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//bmd.context.globalCompositeOperation = 'source-over';
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}
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n = oldn + 0.02;
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}
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function render() {
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}
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