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Snake Game
Developer Winnerweiner2113｜Date and time 24/3/23 6:10:10
Build time 11.141 sec｜Game capacity 2.662KB｜

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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.

```html
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Snake Game</title>
  <style>
    #game-board {
      display: grid;
      grid-template-columns: repeat(10, 1fr);
      grid-template-rows: repeat(10, 1fr);
      width: 300px;
      height: 300px;
    }

.cell {
      background-color: lightgray;
      border: 1px solid white;
    }
  </style>
</head>
<body>
  <div id="game-board"></div>

function drawBoard() {
      board.innerHTML = '';

for (let i = 0; i < gridSize * gridSize; i++) {
        const cell = document.createElement('div');
        cell.classList.add('cell');
        board.appendChild(cell);
        cells.push(cell);
      }
    }

function drawSnake() {
      snake.forEach(segment => {
        const index = segment.x + segment.y * gridSize;
        cells[index].style.backgroundColor = 'green';
      });
    }

function drawFruit() {
      const index = fruit.x + fruit.y * gridSize;
      cells[index].style.backgroundColor = 'red';
    }

function updateGame() {
      moveSnake();
      drawSnake();
      drawFruit();
      setTimeout(updateGame, 100);
    }

function moveSnake() {
      let newPos;

switch (direction) {
        case 'up':
          newPos = { x: snake[0].x, y: snake[0].y - 1 };
          break;

case 'down':
          newPos = { x: snake[0].x, y: snake[0].y + 1 };
          break;

case 'left':
          newPos = { x: snake[0].x - 1, y: snake[0].y };
          break;

case 'right':
          newPos = { x: snake[0].x + 1, y: snake[0].y };
          break;
      }

snake.unshift(newPos);

if (newPos.x === fruit.x && newPos.y === fruit.y) {
        fruit = { x: Math.floor(Math.random() * gridSize), y: Math.floor(Math.random() * gridSize) };
      } else {
        snake.pop();
      }
    }

document.addEventListener('keydown', event => {
      switch (event.key) {
        case 'ArrowUp':
          direction = 'up';
          break;

case 'ArrowDown':
          direction = 'down';
          break;

case 'ArrowLeft':
          direction = 'left';
          break;

case 'ArrowRight':
          direction = 'right';
          break;
      }
    });

drawBoard();
    updateGame();
  </script>
</body>
</html>
```