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<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Bubbles 1</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<canvas id="canvas" width="400" height="400"></canvas>
<script src="utils.js"></script>
<script src="ball.js"></script>
<script>
window.onload = function () {
var canvas = document.getElementById('canvas'),
context = canvas.getContext('2d'),
centerBall = new Ball(100, "#cccccc"),
balls = [],
numBalls = 10,
spring = 0.03,
bounce = -1;
centerBall.x = canvas.width / 2;
centerBall.y = canvas.height / 2;
for (var ball, i = 0; i < numBalls; i++) {
ball = new Ball(Math.random() * 40 + 5, Math.random() * 0xffffff);
ball.x = Math.random() * canvas.width / 2;
ball.y = Math.random() * canvas.height / 2;
ball.vx = Math.random() * 6 - 3;
ball.vy = Math.random() * 6 - 3;
balls.push(ball);
}
function move (ball) {
ball.x += ball.vx;
ball.y += ball.vy;
if (ball.x + ball.radius > canvas.width) {
ball.x = canvas.width - ball.radius;
ball.vx *= bounce;
} else if (ball.x - ball.radius < 0) {
ball.x = ball.radius;
ball.vx *= bounce;
}
if (ball.y + ball.radius > canvas.height) {
ball.y = canvas.height - ball.radius;
ball.vy *= bounce;
} else if (ball.y - ball.radius < 0) {
ball.y = ball.radius;
ball.vy *= bounce;
}
}
function draw (ball) {
