mirror of
https://github.com/photonstorm/phaser
synced 2024-12-11 13:56:16 +00:00
82 lines
1.9 KiB
TypeScript
82 lines
1.9 KiB
TypeScript
/// <reference path="../../Phaser/Game.ts" />
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(function () {
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var myGame = new Phaser.Game(this, 'game', 800, 600, init, create, update);
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function init() {
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myGame.loader.addImageFile('ball', 'assets/sprites/shinyball.png');
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myGame.loader.load();
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}
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var wobblyBall: Phaser.DynamicTexture;
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function create() {
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// Create our DynamicTexture
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wobblyBall = myGame.createDynamicTexture(32, 64);
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// And apply it to 100 randomly positioned sprites
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for (var i = 0; i < 100; i++)
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{
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var temp = myGame.createSprite(myGame.world.randomX, myGame.world.randomY);
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temp.width = 32;
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temp.height = 64;
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temp.loadDynamicTexture(wobblyBall);
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}
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// Populate the wave with some data
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waveData = myGame.math.sinCosGenerator(32, 8, 8, 2);
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}
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function update() {
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wobblyBall.clear();
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updateWobblyBall();
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}
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// This creates a simple sine-wave effect running through our DynamicTexture.
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// This is then duplicated across all sprites using it, meaning we only have to calculate it once.
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var waveSize = 8;
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var wavePixelChunk = 2;
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var waveData;
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var waveDataCounter;
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function updateWobblyBall()
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{
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var s = 0;
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var copyRect = { x: 0, y: 0, w: wavePixelChunk, h: 32 };
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var copyPoint = { x: 0, y: 0 };
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for (var x = 0; x < 32; x += wavePixelChunk)
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{
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copyPoint.x = x;
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copyPoint.y = waveSize + (waveSize / 2) + waveData[s];
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wobblyBall.context.drawImage(myGame.cache.getImage('ball'), copyRect.x, copyRect.y, copyRect.w, copyRect.h, copyPoint.x, copyPoint.y, copyRect.w, copyRect.h);
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copyRect.x += wavePixelChunk;
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s++;
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}
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// Cycle through the wave data - this is what causes the image to "undulate"
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var t = waveData.shift();
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waveData.push(t);
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waveDataCounter++;
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if (waveDataCounter == waveData.length)
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{
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waveDataCounter = 0;
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}
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}
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})();
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