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No:51687

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ブロック崩し
Developer User21635｜Date and time 24/3/15 1:19:13
Build time 19.35 sec｜Game capacity 4.342KB｜

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

<!DOCTYPE html>
<html>
<head>
    <title>ブロック崩し</title>
    <style>
        canvas {
            display: block;
            margin: 0 auto;
            background: #eee;
        }
    </style>
</head>
<body>
    <canvas id="gameCanvas" width="400" height="400"></canvas>

const ball = {
            x: canvas.width / 2,
            y: canvas.height - 30,
            dx: 2,
            dy: -2,
            radius: 10
        };

const paddle = {
            x: canvas.width / 2 - 50,
            y: canvas.height - 20,
            width: 100,
            height: 10,
            speed: 5
        };

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

for (let c = 0; c < brickColumnCount; c++) {
            for (let r = 0; r < brickRowCount; r++) {
                bricks.push({ x: 0, y: 0, status: 1 });
            }
        }

function drawBall() {
            ctx.beginPath();
            ctx.arc(ball.x, ball.y, ball.radius, 0, Math.PI * 2);
            ctx.fillStyle = '#0095DD';
            ctx.fill();
            ctx.closePath();
        }

function drawPaddle() {
            ctx.beginPath();
            ctx.rect(paddle.x, paddle.y, paddle.width, paddle.height);
            ctx.fillStyle = '#0095DD';
            ctx.fill();
            ctx.closePath();
        }

function drawBricks() {
            bricks.forEach((b, i) => {
                if (b.status === 1) {
                    const brickX = (i % brickRowCount) * (brickWidth + brickPadding) + brickOffsetLeft;
                    const brickY = Math.floor(i / brickRowCount) * (brickHeight + brickPadding) + brickOffsetTop;

b.x = brickX;
                    b.y = brickY;

ctx.beginPath();
                    ctx.rect(brickX, brickY, brickWidth, brickHeight);
                    ctx.fillStyle = '#0095DD';
                    ctx.fill();
                    ctx.closePath();
                }
            });
        }

function draw() {
            ctx.clearRect(0, 0, canvas.width, canvas.height);

drawBall();
            drawPaddle();
            drawBricks();
            collisionDetection();

if (ball.x + ball.dx > canvas.width - ball.radius || ball.x + ball.dx < ball.radius) {
                ball.dx = -ball.dx;
            }

if (ball.y + ball.dy < ball.radius) {
                ball.dy = -ball.dy;
            } else if (ball.y + ball.dy > canvas.height - ball.radius) {
                if (ball.x > paddle.x && ball.x < paddle.x + paddle.width) {
                    ball.dy = -ball.dy;
                } else {
                    alert('Game Over!');
                    document.location.reload();
                }
            }

ball.x += ball.dx;
            ball.y += ball.dy;

let gameOver = true;
            bricks.forEach(b => {
                if (b.status === 1) {
                    gameOver = false;
                }
            });

if (gameOver) {
                alert('You Win!');
                document.location.reload();
            }

requestAnimationFrame(draw);
        }

draw();
    </script>
</body>
</html>