var canvas = document.getElementById("myCanvas"); var ctx = canvas.getContext("2d"); var ballRadius = 10; var x = canvas.width/2; var y = canvas.height-30; var dx = 2; var dy = -2; var paddleHeight = 10; var paddleWidth = 75; var paddleX = (canvas.width-paddleWidth)/2; var rightPressed = false; var leftPressed = false; var brickRowCount = 5; var brickColumnCount = 3; var brickWidth = 75; var brickHeight = 20; var brickPadding = 10; var brickOffsetTop = 30; var brickOffsetLeft = 30; var score = 0; var lives = 3; var bricks = []; for(var c=0; c 0 && relativeX < canvas.width) { paddleX = relativeX - paddleWidth/2; } } function collisionDetection() { for(var c=0; c b.x && x < b.x+brickWidth && y > b.y && y < b.y+brickHeight) { dy = -dy; b.status = 0; score++; if(score == brickRowCount*brickColumnCount) { alert("YOU WIN, CONGRATS!"); document.location.reload(); } } } } } } function drawBall() { ctx.beginPath(); ctx.arc(x, y, ballRadius, 0, Math.PI*2); ctx.fillStyle = "#0095DD"; 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 canvas.width-ballRadius || x + dx < ballRadius) { dx = -dx; } if(y + dy < ballRadius) { dy = -dy; } else if(y + dy > canvas.height-ballRadius) { if(x > paddleX && x < paddleX + paddleWidth) { dy = -dy; } else { lives--; if(!lives) { alert("GAME OVER"); document.location.reload(); } else { x = canvas.width/2; y = canvas.height-30; dx = 3; dy = -3; paddleX = (canvas.width-paddleWidth)/2; } } } if(rightPressed && paddleX < canvas.width-paddleWidth) { paddleX += 7; } else if(leftPressed && paddleX > 0) { paddleX -= 7; } x += dx; y += dy; requestAnimationFrame(draw); } draw();

breakout game