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<!DOCTYPE html> | ||
<html> | ||
<head> | ||
<meta charset="utf-8" /> | ||
<title>Breakout Game</title> | ||
<link rel="stylesheet" href="main.css" type="text/css"/> | ||
</head> | ||
<body> | ||
<div class="container" id="js-canvas"> | ||
<div class="overlay"> | ||
<h2>Game Over</h2> | ||
<p id="score-box"></p> | ||
</div> | ||
<canvas id="myCanvas" width="480" height="320"></canvas> | ||
<button type="button" class="button__restart" id="reset-btn">Try Again</button> | ||
</div> | ||
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<script src="main.js"></script> | ||
</body> | ||
</html> |
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* { | ||
padding: 0; | ||
margin: 0; | ||
} | ||
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body { | ||
background-color: #111111; | ||
background-image: linear-gradient(135deg, #0a0a0a 0%, #18191a 100%); | ||
font-family: Arial, sans-serif; | ||
min-height: 100vh; | ||
} | ||
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.container { | ||
margin: 100px auto 0; | ||
position: relative; | ||
} | ||
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.button__restart, | ||
.overlay { | ||
display: none; | ||
} | ||
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.game-over .overlay { | ||
display: flex; | ||
flex-direction: column; | ||
justify-content: center; | ||
align-items: center; | ||
background-color: #dbc1c1; | ||
background-image: linear-gradient(to right, #fa709a 0%, #fee140 100%); | ||
position: absolute; | ||
top: 0; | ||
width: 480px; | ||
height: 320px; | ||
left: 400px; | ||
opacity: .5; | ||
margin: 0 auto; | ||
color: white; | ||
text-align: center; | ||
text-transform: uppercase; | ||
letter-spacing: 4px; | ||
} | ||
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.game-over .button__restart { | ||
display: block; | ||
cursor: pointer; | ||
margin: 10px auto; | ||
background: rgb(102, 35, 226); | ||
padding: 10px; | ||
border: none; | ||
border-radius: 5px; | ||
min-width: 200px; | ||
text-transform: uppercase; | ||
font-size: 18px; | ||
transition: .2s; | ||
} | ||
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.game-over .button__restart:hover { | ||
background:#ffbbbb; | ||
color: white; | ||
} | ||
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canvas { | ||
background: #eee; | ||
display: block; | ||
margin: 0 auto; | ||
} |
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// Main JS file | ||
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var canvas = document.getElementById("myCanvas"), | ||
ctx = canvas.getContext("2d"), | ||
// Positions | ||
x = canvas.width/4, | ||
y = canvas.height-30, | ||
dx = 0.2, | ||
dy = -0.2, | ||
ballRadius = 10, | ||
ballColour = randomColour(), | ||
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// Paddle | ||
paddleHeight = 10, | ||
paddleWidth = 75, | ||
paddleX = (canvas.width-paddleWidth)/2, | ||
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// Keys | ||
rightPressed = false, | ||
leftPressed = false, | ||
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// Bricks | ||
brickRowCount = 3, | ||
brickColumnCount = 5, | ||
brickWidth = 75, | ||
brickHeight = 20, | ||
brickPadding = 10, | ||
brickOffsetTop = 30, | ||
brickOffsetLeft = 30, | ||
bricks = [], | ||
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//Score | ||
score = 0, | ||
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//Restart Button | ||
restartButton = document.getElementById('reset-btn'), | ||
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//Timestamp | ||
tZero; | ||
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// Build our bricks | ||
for(c = 0; c < brickColumnCount; c++){ | ||
bricks[c] = []; | ||
for(r = 0; r < brickRowCount; r++){ | ||
bricks[c][r] = { | ||
x: 0, | ||
y: 0, | ||
status: 1 | ||
}; | ||
} | ||
} | ||
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// Draw our bricks | ||
function drawBricks(){ | ||
for (c = 0; c < brickColumnCount; c++){ | ||
for(r = 0; r < brickRowCount; r++){ | ||
if(bricks[c][r].status == 1) { // Only draw bricks that not have been hit | ||
var brickX = (c*(brickWidth+brickPadding))+brickOffsetLeft, | ||
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(); | ||
} | ||
} | ||
} | ||
} | ||
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// Draw our ball | ||
function drawBall() { | ||
ctx.beginPath(); | ||
ctx.arc(x, y, ballRadius, 0, Math.PI*2); | ||
ctx.fillStyle = ballColour; | ||
ctx.fill(); | ||
ctx.closePath(); | ||
} | ||
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// Get a random rgb colour | ||
function randomColour() { | ||
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function value() { | ||
return Math.floor(Math.random() * Math.floor(255)) | ||
} | ||
return 'rgb(' + value() + ',' + value() + ',' + value() + ')'; | ||
} | ||
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// Draw our paddle | ||
function drawPaddle() { | ||
ctx.beginPath() | ||
ctx.rect(paddleX, canvas.height-paddleHeight, paddleWidth, paddleHeight); | ||
ctx.fillStyle = 'rgb(48, 10, 38)'; | ||
ctx.fill(); | ||
ctx.closePath(); | ||
} | ||
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// Create some collsion detection | ||
function collisionDetection() { | ||
for(c=0; c<brickColumnCount; c++) { | ||
for(r=0; r<brickRowCount; r++) { | ||
var b = bricks[c][r]; | ||
if(b.status == 1) { | ||
// Check if the brick has been hit | ||
if(x > b.x && x < b.x+brickWidth && y > b.y && y < b.y+brickHeight) { | ||
dy = -dy; | ||
b.status = 0; | ||
score++; | ||
// Winner | ||
if(score == brickRowCount*brickColumnCount){ | ||
alert("YOU WIN, CONGRATULATIONS!"); | ||
document.location.reload(); | ||
} | ||
} | ||
} | ||
} | ||
} | ||
} | ||
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function drawScore(){ | ||
ctx.font = "16px Arial"; | ||
ctx.fillStyle = "#0095DD" | ||
ctx.fillText("Score: "+score, 8, 20); // Text to draw + placement on canvas | ||
} | ||
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// Our main Draw function | ||
function draw(t) { | ||
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if(!tZero){ | ||
tZero = t; | ||
} | ||
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var dt = t - tZero; | ||
tZero = t; | ||
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var canvasContainer = document.getElementById('js-canvas'); | ||
ctx.clearRect(0, 0, canvas.width, canvas.height); //stop drawing from leaving a trail by clearing the canvas each time | ||
drawBricks(); | ||
drawBall(ballColour); | ||
drawPaddle(); | ||
drawScore(); | ||
collisionDetection(); | ||
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//- Bounce of top or bottom | ||
if(y + dy < ballRadius){ | ||
dy = -dy; | ||
ballColour = randomColour(); | ||
drawBall(ballColour); | ||
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}else if(y + dy > canvas.height-ballRadius) { | ||
if(x > paddleX && x < paddleX + paddleWidth) { | ||
dy = -dy; | ||
} | ||
else { | ||
canvasContainer.classList.add('game-over'); | ||
document.getElementById('score-box').innerHTML = "Your Score was: "+score; | ||
return false; | ||
} | ||
} | ||
//- Bounce of left or right | ||
if(x + dx < ballRadius || x + dx > canvas.width - ballRadius){ | ||
dx = -dx; | ||
ballColour = randomColour(); | ||
drawBall(ballColour); | ||
} | ||
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x += dx * dt; //update x and y to move the position each time it draws | ||
y += dy * dt; | ||
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//-- Move the paddle | ||
if(rightPressed && paddleX < canvas.width-paddleWidth) { | ||
paddleX += 0.5 * dt; | ||
} else if(leftPressed && paddleX > 0){ | ||
paddleX -= 0.5 * dt; | ||
} | ||
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requestAnimationFrame(draw); | ||
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} | ||
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requestAnimationFrame(draw); | ||
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// Key event functions | ||
function keyDownHandler(e){ | ||
if(e.keyCode == 39) { | ||
rightPressed = true; | ||
} else if(e.keyCode == 37){ | ||
leftPressed = true; | ||
} | ||
} | ||
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function keyUpHandler(e){ | ||
if(e.keyCode == 39) { | ||
rightPressed = false; | ||
} else if(e.keyCode == 37) { | ||
leftPressed = false; | ||
} | ||
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} | ||
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function restartGame(){ | ||
setTimeout(function(){ | ||
document.location.reload(); | ||
}, 100); | ||
} | ||
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// Listen for key event | ||
document.addEventListener("keydown", keyDownHandler, false); | ||
document.addEventListener("keyup", keyUpHandler, false); | ||
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//Listen for click on restart button | ||
restartButton.addEventListener("click", restartGame); |