Breakout Game

Fertiges Breakout Game mit 3 Level

Der hier verwendete Code

<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>Gamedev Canvas Workshop - lesson 10: finishing up</title> <style>* { padding: 0; margin: 0; } canvas { background: #eee; display: block; margin: 0 auto; }</style> </head> <body> <div id="info"></div> <canvas id="myCanvas" width="480" height="320"></canvas> <script> var ende=false; var canvas = document.getElementById("myCanvas"); var inf = document.getElementById("info"); 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<brickColumnCount; c++) { bricks[c] = []; for(var r=0; r<brickRowCount; r++) { bricks[c][r] = { x: 0, y: 0, status: 1 }; } } document.addEventListener("keydown", keyDownHandler, false); document.addEventListener("keyup", keyUpHandler, false); document.addEventListener("mousemove", mouseMoveHandler, false); function keyDownHandler(e) { if(e.code == "ArrowRight") { rightPressed = true; } else if(e.code == 'ArrowLeft') { leftPressed = true; } } function keyUpHandler(e) { if(e.code == 'ArrowRight') { rightPressed = false; } else if(e.code == 'ArrowLeft') { leftPressed = false; } } function mouseMoveHandler(e) { var relativeX = e.clientX - canvas.offsetLeft; if(relativeX > 0 && relativeX < canvas.width) { paddleX = relativeX - paddleWidth/2; } } 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) { if(x > b.x && x < b.x+brickWidth && y > b.y && y < b.y+brickHeight) { dy = -dy; b.status = 0; score++; if(score == brickRowCount*brickColumnCount) { inf.innerHTML="YOU WIN, CONGRATS!"; // game_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<brickColumnCount; c++) { for(var r=0; r<brickRowCount; r++) { if(bricks[c][r].status == 1) { var brickX = (r*(brickWidth+brickPadding))+brickOffsetLeft; var brickY = (c*(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 drawScore() { ctx.font = "16px Arial"; ctx.fillStyle = "#0095DD"; ctx.fillText("Score: "+score, 8, 20); } function drawLives() { ctx.font = "19px Arial"; ctx.fillStyle = "#0095DD"; if(lives<=0){ inf.innerHTML=`<script> function go(){ alert(); }<\/script><p>keine leben mehr game over<button onclick='javascript:go()' id='neu'>Neustart</button></p>`; ende=true; }else{ ctx.fillText("Lives: "+lives, canvas.width-65, 20); } } function draw() { 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; } 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) { inf.innerHTML="GAME OVER"; // game_reload(); } else { x = canvas.width/2; y = canvas.height-30; dx = 2; dy = -2; paddleX = (canvas.width-paddleWidth)/2; } } } if(rightPressed && paddleX < canvas.width-paddleWidth) { paddleX += 7; } else if(leftPressed && paddleX > 0) { paddleX -= 7; } x += dx; y += dy; if(ende==false){ requestAnimationFrame(draw); } } draw(); // } // game_reload(); </script> </body> </html>

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