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No:14468

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ブロック崩し
Developer User5883｜Date and time 23/9/2 7:20:36
Build time 33.476 sec｜Game capacity 5.443KB｜

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>ブロック崩し</title>
</head>
<body>
    <canvas id="canvas" width="400" height="300"></canvas>

// ボールの初期位置と半径
        var ballX = canvas.width / 2;
        var ballY = canvas.height - 30;
        var ballRadius = 10;

// ボールの移動量
        var dx = 2;
        var dy = -2;

// パドルの初期位置とサイズ
        var paddleHeight = 10;
        var paddleWidth = 75;
        var paddleX = (canvas.width - paddleWidth) / 2;

// パドルの移動フラグ
        var rightPressed = false;
        var leftPressed = false;

// ブロックの初期位置、サイズ、行列
        var brickRowCount = 3;
        var brickColumnCount = 5;
        var brickWidth = 75;
        var brickHeight = 20;
        var brickPadding = 10;
        var brickOffsetTop = 30;
        var brickOffsetLeft = 30;
        var bricks = [];

// ブロックの初期化
        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 };
            }
        }

// パドルの操作イベント
        document.addEventListener("keydown", keyDownHandler, false);
        document.addEventListener("keyup", keyUpHandler, false);

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

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

// ボールとブロックの衝突判定
        function collisionDetection() {
            for (var c = 0; c < brickColumnCount; c++) {
                for (var r = 0; r < brickRowCount; r++) {
                    var brick = bricks[c][r];
                    if (brick.status == 1) {
                        if (
                            ballX > brick.x &&
                            ballX < brick.x + brickWidth &&
                            ballY > brick.y &&
                            ballY < brick.y + brickHeight
                        ) {
                            dy = -dy;
                            brick.status = 0;
                        }
                    }
                }
            }
        }

// ゲームの描画処理
        function draw() {
            // キャンバスのクリア
            context.clearRect(0, 0, canvas.width, canvas.height);

// ボールの描画
            context.beginPath();
            context.arc(ballX, ballY, ballRadius, 0, Math.PI * 2);
            context.fillStyle = "#0095DD";
            context.fill();
            context.closePath();

// ブロックの描画
            for (var c = 0; c < brickColumnCount; c++) {
                for (var r = 0; r < brickRowCount; r++) {
                    if (bricks[c][r].status == 1) {
                        var brickX = c * (brickWidth + brickPadding) + brickOffsetLeft;
                        var brickY = r * (brickHeight + brickPadding) + brickOffsetTop;
                        bricks[c][r].x = brickX;
                        bricks[c][r].y = brickY;
                        context.beginPath();
                        context.rect(brickX, brickY, brickWidth, brickHeight);
                        context.fillStyle = "#0095DD";
                        context.fill();
                        context.closePath();
                    }
                }
            }

// パドルの描画
            context.beginPath();
            context.rect(paddleX, canvas.height - paddleHeight, paddleWidth, paddleHeight);
            context.fillStyle = "#0095DD";
            context.fill();
            context.closePath();

// ボールの移動
            ballX += dx;
            ballY += dy;

// 壁との衝突判定
            if (ballX + dx > canvas.width - ballRadius || ballX + dx < ballRadius) {
                dx = -dx;
            }
            if (ballY + dy < ballRadius) {
                dy = -dy;
            } else if (ballY + dy > canvas.height - ballRadius) {
                if (ballX > paddleX && ballX < paddleX + paddleWidth) {
                    dy = -dy;
                } else {
                    alert("ゲームオーバー");
                    document.location.reload();
                }
            }

// パドルの移動
            if (rightPressed && paddleX < canvas.width - paddleWidth) {
                paddleX += 7;
            } else if (leftPressed && paddleX > 0) {
                paddleX -= 7;
            }

// ブロックとの衝突判定
            collisionDetection();

// 再描画
            requestAnimationFrame(draw);
        }

// ゲームの開始
        draw();
    </script>
</body>
</html>