You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
40 lines
767 B
40 lines
767 B
<!DOCTYPE html>
|
|
<html>
|
|
<head>
|
|
<meta charset="utf-8" />
|
|
<title>MDN Breakout</title>
|
|
<style>
|
|
* { padding: 0; margin: 0; }
|
|
canvas { background: #eee; display: block; margin: 0 auto; }
|
|
</style>
|
|
</head>
|
|
<body>
|
|
<canvas id="myCanvas" width="480" height="320"></canvas>
|
|
<script>
|
|
var canvas = document.getElementById("myCanvas");
|
|
var ctx = canvas.getContext("2d");
|
|
var x = canvas.width/2;
|
|
var y = canvas.height-30;
|
|
var dx = 2;
|
|
var dy = -2;
|
|
|
|
function drawBall() {
|
|
ctx.beginPath();
|
|
ctx.arc(x, y, 10, 0, Math.PI*2);
|
|
ctx.fillStyle = "#0095DD";
|
|
ctx.fill();
|
|
ctx.closePath();
|
|
}
|
|
|
|
function draw() {
|
|
ctx.clearRect(0, 0, canvas.width, canvas.height);
|
|
drawBall();
|
|
x += dx;
|
|
y += dy;
|
|
}
|
|
|
|
setInterval(draw, 10);
|
|
</script>
|
|
</body>
|
|
</html>
|