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No:52860

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Billiards
Developer User22237｜Date and time 24/3/26 5:37:00
Build time 14.286 sec｜Game capacity 3.37KB｜

Script

Score: 0

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[PR]現在の本の売れ筋ランキング

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

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Billiards Game</title>
    <style>
        canvas {
            background-color: #2c3e50;
            display: block;
            margin: 0 auto;
        }
        
        #score {
            color: #fff;
            font-size: 24px;
            text-align: center;
        }
    </style>
</head>

<body>
    <canvas id="gameCanvas" width="480" height="320"></canvas>
    <p id="score">Score: 0</p>

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;
        let score = 0;

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 drawScore() {
            ctx.font = "16px Arial";
            ctx.fillStyle = "#fff";
            ctx.fillText("Score: " + score, 8, 20);
        }

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

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;
                    score++;
                } else {
                    alert("Game Over! Score: " + score);
                    document.location.reload();
                }
            }

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

x += dx;
            y += dy;
            requestAnimationFrame(draw);
        }

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

</html>