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No:20096

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Block Breaker
Developer User8949｜Date and time 23/10/8 8:33:13
Build time 25.181 sec｜Game capacity 5.435KB｜

Script

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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>
<head>
  <style>
    #gameCanvas {
      position: absolute;
      top: 0;
      left: 0;
      background: #000;
    }
  </style>
</head>
<body>
  <canvas id="gameCanvas" width="400" height="500"></canvas>
  <script>
    // Initialize canvas and variables
    var canvas = document.getElementById("gameCanvas");
    var ctx = canvas.getContext("2d");
    var ballRadius = 10;
    var x = canvas.width/2;
    var y = canvas.height - 30;
    var dx = 3;
    var dy = -3;
    var paddleHeight = 10;
    var paddleWidth = 75;
    var paddleX = (canvas.width - paddleWidth) / 2;
    var rightPressed = false;
    var leftPressed = false;
    var brickRowCount = 5;
    var brickColumnCount = 3;
    var brickWidth = 75;
    var brickHeight = 20;
    var brickPadding = 10;
    var brickOffsetTop = 30;
    var brickOffsetLeft = 30;
    var score = 0;
    var lives = 3;

// Initialize bricks
    var bricks = [];
    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 };
      }
    }

// Event listeners for paddle movement
    document.addEventListener("keydown", keyDownHandler, false);
    document.addEventListener("keyup", keyUpHandler, false);
    document.addEventListener("mousemove", mouseMoveHandler, false);

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

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

// Handle mouse movement
    function mouseMoveHandler(e) {
      var relativeX = e.clientX - canvas.offsetLeft;
      if (relativeX > 0 && relativeX < canvas.width) {
        paddleX = relativeX - paddleWidth/2;
      }
    }

// Check collision with bricks
    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 (x > brick.x && x < brick.x + brickWidth && y > brick.y && y < brick.y + brickHeight) {
              dy = -dy;
              brick.status = 0;
              score++;
              if (score == brickRowCount * brickColumnCount) {
                alert("Congratulations! You win!");
                document.location.reload();
              }
            }
          }
        }
      }
    }

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

// Draw paddle
    function drawPaddle() {
      ctx.beginPath();
      ctx.rect(paddleX, canvas.height - paddleHeight, paddleWidth, paddleHeight);
      ctx.fillStyle = "#0095DD";
      ctx.fill();
      ctx.closePath();
    }

// Draw bricks
    function drawBricks() {
      for (var c = 0; c < brickColumnCount; c++) {
        for (var r = 0; r < brickRowCount; r++) {
          if (bricks[c][r].status == 1) {
            var brickX = (r * (brickWidth + brickPadding)) + brickOffsetLeft;
            var brickY = (c * (brickHeight + brickPadding)) + brickOffsetTop;
            bricks[c][r].x = brickX;
            bricks[c][r].y = brickY;
            ctx.beginPath();
            ctx.rect(brickX, brickY, brickWidth, brickHeight);
            ctx.fillStyle = "#0095DD";
            ctx.fill();
            ctx.closePath();
          }
        }
      }
    }

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

// Draw lives
    function drawLives() {
      ctx.font = "16px Arial";
      ctx.fillStyle = "#0095DD";
      ctx.fillText("Lives: " + lives, canvas.width - 65, 20);
    }

// Game loop
    function draw() {
      ctx.clearRect(0, 0, canvas.width, canvas.height);
      drawBricks();
      drawBall();
      drawPaddle();
      drawScore();
      drawLives();
      collisionDetection();

// Reverse ball direction if it hits the boundary
      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;
        } else {
          lives--;
          if (!lives) {
            alert("Game Over! You lost.");
            document.location.reload();
          } else {
            x = canvas.width/2;
            y = canvas.height - 30;
            dx = 3;
            dy = -3;
            paddleX = (canvas.width - paddleWidth)/2;
          }
        }
      }

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

// Update ball position
      x += dx;
      y += dy;

requestAnimationFrame(draw);
    }

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