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MDN breakout content type separation

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cat-town
Dan Buch 8 years ago
parent a94e815fc2
commit 51a91228ca
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GPG Key ID: FAEF12936DD3E3EC
3 changed files with 241 additions and 223 deletions
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230
mdn-breakout/index.html
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@ -3,231 +3,15 @@
<head> <head>
<meta charset="utf-8" /> <meta charset="utf-8" />
<title>MDN Breakout</title> <title>MDN Breakout</title>
<style> <link rel="stylesheet" href="style.css" />
* { padding: 0; margin: 0; }
canvas { background: #eee; display: block; margin: 0 auto; }
</style>
</head> </head>
<body> <body>
<canvas id="myCanvas" width="480" height="320"></canvas> <canvas id="myCanvas" width="480" height="320"></canvas>
<script> <footer>
(function() { Built with &hearts; via <a
var canvas = document.getElementById("myCanvas"); href="https://developer.mozilla.org/en-US/docs/Games/Workflows/Breakout_game_from_scratch">the
var ctx = canvas.getContext("2d"); MDN breakout from scratch tutorial</a>.
var ballRadius = 10; </footer>
var ballColor = '#0095DD'; <script src="script.js"></script>
var paddleHeight = 7;
var paddleWidth = 119;
var paddleX = (canvas.width-paddleWidth)/2;
var paddleSpeed = 7;
var rightPressed = false;
var leftPressed = false;
var x = canvas.width/2;
var y = canvas.height-randInt(10, 50);
var dx = 2;
var dy = -2;
var score = 0;
var scoreStep = 1;
var lives = 3;
var isPaused = false;
var isOver = false;
var brickRowCount = 3;
var brickColumnCount = 5;
var brickWidth = 75;
var brickHeight = 20;
var brickPadding = 10;
var brickOffsetTop = 30;
var brickOffsetLeft = 30;
var bricks = [];
for(c=0; c<brickColumnCount; c++) {
bricks[c] = [];
for(r=0; r<brickRowCount; r++) {
bricks[c][r] = { x: 0, y: 0, status: 1 };
}
}
function randInt(min, max) {
min = Math.ceil(min);
max = Math.floor(max);
return Math.floor(Math.random() * (max - min)) + min;
}
function randColor() {
return 'rgba(' + ([
randInt(0, 255),
randInt(0, 255),
randInt(0, 255)
].map(function(elem, i) { return '' + elem; }).join(',')) + ', 1.0)'
}
function drawBall() {
ctx.beginPath();
ctx.arc(x, y, ballRadius, 0, Math.PI*2);
ctx.fillStyle = ballColor;
ctx.fill();
ctx.closePath();
}
function drawPaddle() {
ctx.beginPath();
ctx.rect(paddleX, canvas.height-paddleHeight, paddleWidth, paddleHeight);
ctx.fillStyle = "#0095DD";
ctx.fill();
ctx.closePath();
}
function drawBricks() {
for(c=0; c<brickColumnCount; c++) {
for(r=0; r<brickRowCount; r++) {
if(bricks[c][r].status != 1) {
continue;
}
var brickX = (c*(brickWidth+brickPadding))+brickOffsetLeft;
var brickY = (r*(brickHeight+brickPadding))+brickOffsetTop;
bricks[c][r].x = brickX;
bricks[c][r].y = brickY;
ctx.beginPath();
ctx.rect(brickX, brickY, brickWidth, brickHeight);
ctx.fillStyle = "#0095DD";
ctx.fill();
ctx.closePath();
}
}
}
function collisionDetection() {
for(c=0; c<brickColumnCount; c++) {
for(r=0; r<brickRowCount; r++) {
var b = bricks[c][r];
if(b.status != 1) {
continue;
}
if(x > b.x && x < b.x+brickWidth && y > b.y && y < b.y+brickHeight) {
dy = -dy;
b.status = 0;
score += scoreStep;
// scoreStep++;
if(score >= (brickRowCount*brickColumnCount*scoreStep)) {
isOver = true;
pauseWithMessage("YOU WIN! FINAL SCORE "+score+"!");
// document.location.reload();
}
}
}
}
}
function drawScore() {
ctx.font = "16px Arial";
ctx.fillStyle = "#0095DD";
ctx.fillText("Score: "+score, 8, 20);
}
function drawLives() {
ctx.font = "16px Arial";
ctx.fillStyle = "#0095DD";
ctx.fillText("Lives: "+lives, canvas.width-65, 20);
}
function draw() {
if(isPaused || isOver) {
return;
}
ctx.clearRect(0, 0, canvas.width, canvas.height);
drawBricks();
drawBall();
drawPaddle();
drawScore();
drawLives();
collisionDetection();
if(x + dx > canvas.width-ballRadius || x + dx < ballRadius) {
dx = -dx;
ballColor = randColor();
}
if(y + dy < ballRadius) {
dy = -dy;
ballColor = randColor();
}
else if(y + dy > canvas.height-ballRadius) {
if(x > paddleX && x < paddleX + paddleWidth) {
dy = -dy;
dx *= 1.01;
dy *= 1.01;
}
else {
lives--;
if(!lives) {
isOver = true;
pauseWithMessage("GAME OVER");
}
else {
x = canvas.width/2;
y = canvas.height-randInt(10, 50);
dx = 2;
dy = -2;
paddleX = (canvas.width-paddleWidth)/2;
}
}
}
if(rightPressed && paddleX < canvas.width-paddleWidth) {
paddleX += paddleSpeed;
}
else if(leftPressed && paddleX > 0) {
paddleX -= paddleSpeed;
}
x += dx;
y += dy;
requestAnimationFrame(draw);
}
function pauseWithMessage(msg) {
isPaused = true;
ctx.font = "16px Arial";
ctx.fillStyle = "#FF3333";
ctx.fillText(msg, 150, 200);
}
function keyDownHandler(e) {
if(e.keyCode == 39) {
rightPressed = true;
}
else if(e.keyCode == 37) {
leftPressed = true;
}
}
function keyUpHandler(e) {
if(e.keyCode == 39) {
rightPressed = false;
}
else if(e.keyCode == 37) {
leftPressed = false;
}
else if(e.keyCode == 27 && !isOver) {
if(isPaused) {
isPaused = false;
} else {
pauseWithMessage("PAUSE (ESC)");
}
}
}
function mouseMoveHandler(e) {
var relativeX = e.clientX - canvas.offsetLeft;
if(relativeX > paddleWidth/2 &&
relativeX < (canvas.width-(paddleWidth/2))) {
paddleX = relativeX - paddleWidth/2;
}
}
document.addEventListener("keydown", keyDownHandler, false);
document.addEventListener("keyup", keyUpHandler, false);
document.addEventListener("mousemove", mouseMoveHandler, false);
draw();
})();
</script>
</body> </body>
</html> </html>

220
mdn-breakout/script.js
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(function() {
var canvas = document.getElementById("myCanvas"),
ctx = canvas.getContext("2d"),
ballRadius = 10,
ballColor = '#0095DD',
paddleHeight = 7,
paddleWidth = 119,
paddleX = (canvas.width-paddleWidth)/2,
paddleSpeed = 7,
rightPressed = false,
leftPressed = false,
x = canvas.width/2,
y = canvas.height-randInt(10, 50),
dx = 2,
dy = -2,
score = 0,
scoreStep = 1,
lives = 3,
isPaused = false,
isOver = false,
brickRowCount = 3,
brickColumnCount = 5,
brickWidth = 75,
brickHeight = 20,
brickPadding = 10,
brickOffsetTop = 30,
brickOffsetLeft = 30,
bricks = [];
(function() {
for(var c=0; c<brickColumnCount; c++) {
bricks[c] = [];
for(var r=0; r<brickRowCount; r++) {
bricks[c][r] = { x: 0, y: 0, status: 1 };
}
}
})();
function randInt(min, max) {
min = Math.ceil(min);
max = Math.floor(max);
return Math.floor(Math.random() * (max - min)) + min;
}
function randColor() {
return 'rgba(' + ([
randInt(0, 255),
randInt(0, 255),
randInt(0, 255)
].map(function(elem, i) { return '' + elem; }).join(',')) + ', 1.0)'
}
function drawBall() {
ctx.beginPath();
ctx.arc(x, y, ballRadius, 0, Math.PI*2);
ctx.fillStyle = ballColor;
ctx.fill();
ctx.closePath();
}
function drawPaddle() {
ctx.beginPath();
ctx.rect(paddleX, canvas.height-paddleHeight, paddleWidth, paddleHeight);
ctx.fillStyle = "#0095DD";
ctx.fill();
ctx.closePath();
}
function drawBricks() {
for(var c=0; c<brickColumnCount; c++) {
for(var r=0; r<brickRowCount; r++) {
if(bricks[c][r].status != 1) {
continue;
}
var brickX = (c*(brickWidth+brickPadding))+brickOffsetLeft;
var brickY = (r*(brickHeight+brickPadding))+brickOffsetTop;
bricks[c][r].x = brickX;
bricks[c][r].y = brickY;
ctx.beginPath();
ctx.rect(brickX, brickY, brickWidth, brickHeight);
ctx.fillStyle = "#0095DD";
ctx.fill();
ctx.closePath();
}
}
}
function collisionDetection() {
for(var c=0; c<brickColumnCount; c++) {
for(var r=0; r<brickRowCount; r++) {
var b = bricks[c][r];
if(b.status != 1) {
continue;
}
if(x > b.x && x < b.x+brickWidth && y > b.y && y < b.y+brickHeight) {
dy = -dy;
b.status = 0;
score += scoreStep;
// scoreStep++;
if(score >= (brickRowCount*brickColumnCount*scoreStep)) {
isOver = true;
pauseWithMessage("YOU WIN! FINAL SCORE "+score+"!");
// document.location.reload();
}
}
}
}
}
function drawScore() {
ctx.font = "16px Arial";
ctx.fillStyle = "#0095DD";
ctx.fillText("Score: "+score, 8, 20);
}
function drawLives() {
ctx.font = "16px Arial";
ctx.fillStyle = "#0095DD";
ctx.fillText("Lives: "+lives, canvas.width-65, 20);
}
function draw() {
if(isPaused || isOver) {
return;
}
ctx.clearRect(0, 0, canvas.width, canvas.height);
drawBricks();
drawBall();
drawPaddle();
drawScore();
drawLives();
collisionDetection();
if(x + dx > canvas.width-ballRadius || x + dx < ballRadius) {
dx = -dx;
ballColor = randColor();
}
if(y + dy < ballRadius) {
dy = -dy;
ballColor = randColor();
}
else if(y + dy > canvas.height-ballRadius) {
if(x > paddleX && x < paddleX + paddleWidth) {
dy = -dy;
dx *= 1.01;
dy *= 1.01;
}
else {
lives--;
if(!lives) {
isOver = true;
pauseWithMessage("GAME OVER");
}
else {
x = canvas.width/2;
y = canvas.height-randInt(10, 50);
dx = 2;
dy = -2;
paddleX = (canvas.width-paddleWidth)/2;
}
}
}
if(rightPressed && paddleX < canvas.width-paddleWidth) {
paddleX += paddleSpeed;
}
else if(leftPressed && paddleX > 0) {
paddleX -= paddleSpeed;
}
x += dx;
y += dy;
requestAnimationFrame(draw);
}
function pauseWithMessage(msg) {
isPaused = true;
ctx.font = "16px Arial";
ctx.fillStyle = "#FF3333";
ctx.fillText(msg, 150, 200);
}
function keyDownHandler(e) {
if(e.keyCode == 39) {
rightPressed = true;
}
else if(e.keyCode == 37) {
leftPressed = true;
}
}
function keyUpHandler(e) {
if(e.keyCode == 39) {
rightPressed = false;
}
else if(e.keyCode == 37) {
leftPressed = false;
}
else if(e.keyCode == 27 && !isOver) {
if(isPaused) {
isPaused = false;
} else {
pauseWithMessage("PAUSE (ESC)");
}
}
}
function mouseMoveHandler(e) {
var relativeX = e.clientX - canvas.offsetLeft;
if(relativeX > paddleWidth/2 &&
relativeX < (canvas.width-(paddleWidth/2))) {
paddleX = relativeX - paddleWidth/2;
}
}
document.addEventListener("keydown", keyDownHandler, false);
document.addEventListener("keyup", keyUpHandler, false);
document.addEventListener("mousemove", mouseMoveHandler, false);
draw();
})();

14
mdn-breakout/style.css
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* {
padding: 0;
margin: 0;
}
canvas {
background: #eee;
display: block;
margin: 0 auto;
}
footer {
margin: 32px auto;
font-family: Arial, sans-serif;
font-size: 12px;
}
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