phaser/Tests/sprites/dynamic texture 1.ts

82 lines
1.9 KiB
TypeScript

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