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part4b.html
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part4b.html
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<!DOCTYPE html>
<html>
<title>Creative Coding Yea!</title>
<head>
<meta charset="utf-8">
<script language="javascript" src="js/creative_coding.js"></script>
<script language="javascript" src="js/canvas.js"></script>
<link rel="stylesheet" href="css/reset.css" type="text/css" media="screen" />
<link rel="stylesheet" href="css/style.css" type="text/css" media="screen" />
</head>
<body>
<script>
var ctx = createCanvas("canvas1");
var max_balls = 2000;
var balls = [];
for (var i = 0; i < max_balls; i++) {
addBall();
}
// push a ball and it's values into the array
function addBall(){
var ball = {
x: random(w),
y: random(-200,0),
speed_x: 0,
speed_y: random(0.5, 3),
size: 8,
colour: rgb(random(255))
}
balls.push(ball);
if (balls.length > max_balls) balls.splice(0,1);
}
function draw(){
ctx.background(0, 0.06);
moveBall();
drawBall();
}
function moveBall(){
for (var i = 0; i < balls.length; i++) {
var b = balls[i];
b.x = b.x + b.speed_x;
b.y = b.y + b.speed_y;
if (b.y > h) {
resetBall(b);
}
}
}
function resetBall(b){
b.y = random(-100,0);
b.colour = rgb(randomInt(255));
}
function drawBall(){
for (var i = 0; i < balls.length; i++) {
var b = balls[i];
ctx.fillStyle = b.colour;
ctx.fillEllipse(b.x, b.y, b.size, b.size);
}
}
</script>
</body>
</html>