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No:6579

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Retro Game
Developer User3901｜Date and time 23/7/2 20:58:18
Build time 22.378 sec｜Game capacity 2.828KB｜

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[PR]現在の売れ筋アプリランキング

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

<!DOCTYPE html>
<html>
  <head>
    <title>Retro Game</title>
    <style>
      body {
        display: flex;
        justify-content: center;
        align-items: center;
        height: 100vh;
        margin: 0;
        background-color: #333;
        overflow: hidden;
      }

canvas {
        border: 1px solid #fff;
      }
    </style>
  </head>
  <body>
    <canvas id="gameCanvas" width="400" height="400"></canvas>

// Game variables
      let x = canvas.width / 2;
      let y = canvas.height - 30;
      let dx = 2;
      let dy = -2;
      let ballRadius = 10;
      let paddleHeight = 10;
      let paddleWidth = 75;
      let paddleX = (canvas.width - paddleWidth) / 2;
      let rightPressed = false;
      let leftPressed = false;

// Event listeners for arrow key presses
      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;
        }
      }

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

drawBall();
        drawPaddle();

// Bounce off the walls
        if (x + dx > canvas.width - ballRadius || x + dx < ballRadius) {
          dx = -dx;
        }
        if (y + dy < ballRadius) {
          dy = -dy;
        } else if (y + dy > canvas.height - ballRadius) {
          // Game over if the ball hits the bottom wall
          alert("GAME OVER");
          document.location.reload();
        }

// Move paddle based on arrow key presses
        if (rightPressed && paddleX < canvas.width - paddleWidth) {
          paddleX += 7;
        } else if (leftPressed && paddleX > 0) {
          paddleX -= 7;
        }

x += dx;
        y += dy;
      }

function drawBall() {
        ctx.beginPath();
        ctx.arc(x, y, ballRadius, 0, Math.PI * 2);
        ctx.fillStyle = "#fff";
        ctx.fill();
        ctx.closePath();
      }

function drawPaddle() {
        ctx.beginPath();
        ctx.rect(paddleX, canvas.height - paddleHeight, paddleWidth, paddleHeight);
        ctx.fillStyle = "#fff";
        ctx.fill();
        ctx.closePath();
      }

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