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Block Breaker
Developer User19464｜Date and time 24/2/19 2:35:05
Build time 15.452 sec｜Game capacity 4.167KB｜

Script

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[PR]現在の売れ筋ゲームアプリランキング

Click here for free DL of the app version that can save data.

<!DOCTYPE html>
<html>
<head>
  <title>Block Breaker Game</title>
  <style>
    canvas {
      border: 1px solid black;
      display: block;
      margin: 0 auto;
    }
  </style>
</head>
<body>
  <canvas id="gameCanvas" width="480" height="320"></canvas>
  <script>
    const canvas = document.getElementById('gameCanvas');
    const ctx = canvas.getContext('2d');

const ballRadius = 10;
    let x = canvas.width / 2;
    let y = canvas.height - 30;
    let dx = 2;
    let dy = -2;

const paddleHeight = 10;
    const paddleWidth = 75;
    let paddleX = (canvas.width - paddleWidth) / 2;

let rightPressed = false;
    let leftPressed = false;

const brickRowCount = 3;
    const brickColumnCount = 5;
    const brickWidth = 75;
    const brickHeight = 20;
    const brickPadding = 10;
    const brickOffsetTop = 30;
    const brickOffsetLeft = 30;

document.addEventListener('keydown', keyDownHandler, false);
    document.addEventListener('keyup', keyUpHandler, false);

function keyDownHandler(e) {
        if (e.key === 'Right' || e.key === 'ArrowRight') {
            rightPressed = true;
        } else if (e.key === 'Left' || e.key === 'ArrowLeft') {
            leftPressed = true;
        }
    }

function keyUpHandler(e) {
        if (e.key === 'Right' || e.key === 'ArrowRight') {
            rightPressed = false;
        } else if (e.key === 'Left' || e.key === 'ArrowLeft') {
            leftPressed = false;
        }
    }

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 draw() {
        ctx.clearRect(0, 0, canvas.width, canvas.height);
        drawBricks();
        drawBall();
        drawPaddle();
        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 {
                alert('Game Over');
                document.location.reload();
            }
        }

if (rightPressed && paddleX < canvas.width - paddleWidth) {
            paddleX += 7;
        } else if (leftPressed && paddleX > 0) {
            paddleX -= 7;
        }

x += dx;
        y += dy;
    }

setInterval(draw, 10);
  </script>
</body>
</html>