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ブロック崩し
Developer User19345｜Date and time 24/2/17 13:15:14
Build time 15.056 sec｜Game capacity 4.541KB｜

Script

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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 lang="ja">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>ブロック崩し</title>
  <style>
    body {
      margin: 0;
      overflow: hidden;
    }
    canvas {
      display: block;
    }
  </style>
</head>
<body>
  <canvas id="gameCanvas" width="400" height="400"></canvas>
  <script>
    const canvas = document.getElementById("gameCanvas");
    const ctx = canvas.getContext("2d");

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 - 10,
      width: 100,
      height: 10,
      dx: 5
    };

const brickRowCount = 3;
    const brickColumnCount = 5;
    const brickWidth = 70;
    const brickHeight = 20;
    const brickPadding = 10;
    const brickOffsetTop = 30;
    const brickOffsetLeft = 30;

let score = 0;

document.addEventListener("keydown", keyDownHandler);
    document.addEventListener("mousemove", mouseMoveHandler);

function keyDownHandler(e) {
      if (e.key === "Right" || e.key === "ArrowRight") {
        paddle.x += paddle.dx;
      } else if (e.key === "Left" || e.key === "ArrowLeft") {
        paddle.x -= paddle.dx;
      }
    }

function mouseMoveHandler(e) {
      const relativeX = e.clientX - canvas.offsetLeft;
      if (relativeX > 0 && relativeX < canvas.width) {
        paddle.x = relativeX - paddle.width / 2;
      }
    }

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 drawScore() {
      ctx.font = "16px Arial";
      ctx.fillStyle = "#0095DD";
      ctx.fillText("Score: " + score, 8, 20);
    }

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

if (paddle.x + paddle.dx > 0 && paddle.x + paddle.dx < canvas.width - paddle.width) {
        paddle.x += paddle.dx;
      }

requestAnimationFrame(draw);
    }

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