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Snake Game
Developer User20593｜Date and time 24/2/29 1:29:58
Build time 15.418 sec｜Game capacity 3.022KB｜

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 lang="pt-br">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Jogo da Cobrinha</title>
  <style>
    canvas {
      border: 1px solid black;
    }
  </style>
</head>
<body>
  <canvas id="snakeCanvas" width="400" height="400"></canvas>

const blockSize = 10;
    let snake = [
      { x: 10, y: 10 },
      { x: 10, y: 20 },
      { x: 10, y: 30 }
    ];
    let food = { x: 20, y: 20 };
    let direction = 'right';

function drawSnakePart(part) {
      ctx.fillStyle = 'green';
      ctx.fillRect(part.x, part.y, blockSize, blockSize);
    }

function drawFood() {
      ctx.fillStyle = 'red';
      ctx.fillRect(food.x, food.y, blockSize, blockSize);
    }

function drawSnake() {
      snake.forEach((part) => {
        drawSnakePart(part);
      });
    }

function moveSnake() {
      let head = { x: snake[0].x, y: snake[0].y };

if (direction === 'right') {
        head.x += blockSize;
      } else if (direction === 'left') {
        head.x -= blockSize;
      } else if (direction === 'up') {
        head.y -= blockSize;
      } else if (direction === 'down') {
        head.y += blockSize;
      }

snake.unshift(head);

if (head.x === food.x && head.y === food.y) {
        food.x = Math.floor(Math.random() * canvas.width / blockSize) * blockSize;
        food.y = Math.floor(Math.random() * canvas.height / blockSize) * blockSize;
      } else {
        snake.pop();
      }
    }

function changeDirection(event) {
      const keyPressed = event.key;

if ((keyPressed === 'ArrowUp' || keyPressed === 'w') && direction !== 'down') {
        direction = 'up';
      }
      if ((keyPressed === 'ArrowDown' || keyPressed === 's') && direction !== 'up') {
        direction = 'down';
      }
      if ((keyPressed === 'ArrowLeft' || keyPressed === 'a') && direction !== 'right') {
        direction = 'left';
      }
      if ((keyPressed === 'ArrowRight' || keyPressed === 'd') && direction !== 'left') {
        direction = 'right';
      }
    }

function clearCanvas() {
      ctx.clearRect(0, 0, canvas.width, canvas.height);
    }

function checkCollision() {
      if (snake[0].x < 0 || snake[0].x >= canvas.width || snake[0].y < 0 || snake[0].y >= canvas.height) {
        return true;
      }

for (let i = 1; i < snake.length; i++) {
        if (snake[0].x === snake[i].x && snake[0].y === snake[i].y) {
          return true;
        }
      }

return false;
    }

function gameLoop() {
      if (checkCollision()) {
        alert('Game Over!');
        window.location.reload();
      }

clearCanvas();
      drawFood();
      moveSnake();
      drawSnake();
    }

drawSnake();
    drawFood();

setInterval(gameLoop, 100);

document.addEventListener('keydown', changeDirection);
  </script>
</body>
</html>