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Snake Game
Developer User21054｜Date and time 24/3/5 3:07:28
Build time 14.858 sec｜Game capacity 2.652KB｜

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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>Snake Game</title>
  <style>
    #game-board {
      width: 300px;
      height: 300px;
      border: 1px solid black;
      position: relative;
    }
    .snake {
      width: 10px;
      height: 10px;
      background-color: green;
      position: absolute;
    }
    .food {
      width: 10px;
      height: 10px;
      background-color: red;
      position: absolute;
    }
  </style>
</head>
<body>
  <div id="game-board"></div>
  
  <script>
    let snake = [{ x: 10, y: 10 }];
    let snakeDirection = 'right';
    let food = { x: 200, y: 200 };
    
    function draw() {
      let board = document.getElementById('game-board');
      board.innerHTML = '';
      
      snake.forEach(segment => {
        let snakeElement = document.createElement('div');
        snakeElement.className = 'snake';
        snakeElement.style.left = segment.x + 'px';
        snakeElement.style.top = segment.y + 'px';
        board.appendChild(snakeElement);
      });
      
      let foodElement = document.createElement('div');
      foodElement.className = 'food';
      foodElement.style.left = food.x + 'px';
      foodElement.style.top = food.y + 'px';
      board.appendChild(foodElement);
    }
    
    function update() {
      let newHead = { x: snake[0].x, y: snake[0].y };
      
      if (snakeDirection === 'up') { newHead.y -= 10; }
      if (snakeDirection === 'down') { newHead.y += 10; }
      if (snakeDirection === 'left') { newHead.x -= 10; }
      if (snakeDirection === 'right') { newHead.x += 10; }
      
      snake.unshift(newHead);
      
      if (newHead.x === food.x && newHead.y === food.y) {
        food.x = Math.floor(Math.random() * 30) * 10;
        food.y = Math.floor(Math.random() * 30) * 10;
      } else {
        snake.pop();
      }
      
      if (newHead.x < 0 || newHead.x >= 300 || newHead.y < 0 || newHead.y >= 300) {
        clearInterval(gameLoop);
        alert('Game Over!');
        location.reload();
      }
    }
    
    function loop() {
      update();
      draw();
    }
    
    draw();
    let gameLoop = setInterval(loop, 100);
    
    document.addEventListener('keydown', (event) => {
      if (event.key === 'ArrowUp' && snakeDirection !== 'down') {
        snakeDirection = 'up';
      }
      if (event.key === 'ArrowDown' && snakeDirection !== 'up') {
        snakeDirection = 'down';
      }
      if (event.key === 'ArrowLeft' && snakeDirection !== 'right') {
        snakeDirection = 'left';
      }
      if (event.key === 'ArrowRight' && snakeDirection !== 'left') {
        snakeDirection = 'right';
      }
    });
  </script>
</body>
</html>