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05.sprite_sheet_anlimation.html
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05.sprite_sheet_anlimation.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport"
content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no, target-densitydpi=device-dpi"/>
<style>
html, body {
overflow: hidden;
width: 100%;
height: 100%;
margin:0;
padding:0;
border: 0;
}
</style>
<script src="js/utils.js"></script>
<script src="js/ImageManager.js"></script>
<script src="js/SpriteSheet.js"></script>
<script>
var ctx;
var imageManager;
var spriteSheet;
var timer = 0;
var frameStart = 0;
var frame = 0;
function init() {
ctx = initFullScreenCanvas("mainCanvas").getContext("2d");
imageManager = new ImageManager();
imageManager.load({
"sheet": "img/sheet.png"
}, onLoaded);
}
var tiles = [
[0, 0, 94, 76, 44, 67],
[94, 0, 94, 76, 44, 68],
[188, 0, 91, 76, 42, 68],
[279, 0, 88, 76, 39, 68],
[367, 0, 83, 77, 34, 69],
[0, 77, 81, 75, 34, 67],
[81, 77, 80, 73, 34, 66],
[161, 77, 78, 72, 33, 65],
[239, 77, 77, 72, 33, 65],
[316, 77, 77, 72, 32, 65],
[393, 77, 79, 73, 33, 66],
[0, 152, 80, 75, 34, 67],
[80, 152, 81, 77, 34, 69],
[161, 152, 84, 77, 36, 69],
[245, 152, 89, 76, 41, 68],
[334, 152, 93, 75, 44, 67]
];
function onLoaded() {
spriteSheet = new SpriteSheet(imageManager.get("sheet"), tiles);
animate();
}
function animate() {
var now = new Date().getTime();
var passed = now - frameStart;
if (passed > 60) {
ctx.fillStyle = "white";
ctx.fillRect(0, 0, 500, 500);
frame = (frame + 1)%tiles.length;
spriteSheet.drawFrame(ctx, frame, 200, 200);
frameStart = now;
}
requestAnimationFrame(arguments.callee, null);
}
function initFullScreenCanvas(canvasId) {
var canvas = document.getElementById(canvasId);
resizeCanvas(canvas);
window.addEventListener("resize", function() {
resizeCanvas(canvas);
});
return canvas;
}
function resizeCanvas(canvas) {
canvas.width = document.width || document.body.clientWidth;
canvas.height = document.height || document.body.clientHeight;
}
</script>
</head>
<body onload="init()">
<canvas id="mainCanvas" width="100" height="100"></canvas>
</body>
</html>