Snake Game's game | AI game creator

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No:46181

137

Snake Game
Developer User19969｜Date and time 24/2/23 22:29:38
Build time 13.844 sec｜Game capacity 2.867KB｜

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<!DOCTYPE html>
<html>
<head>
  <title>Snake Game</title>
  <style>
    canvas {
      border: 1px solid black;
    }
  </style>
</head>
<body>
  <canvas id="gameCanvas" width="400" height="400"></canvas>

<script>
    const canvas = document.getElementById("gameCanvas");
    const ctx = canvas.getContext("2d");

const snakeSize = 20;
    const snakeColor = "green";
    const appleColor = "red";

let snake = [{ x: 100, y: 100 }];
    let dx = 0;
    let dy = 0;
    let apple = { x: 200, y: 200 };

function drawSnake() {
      ctx.fillStyle = snakeColor;
      snake.forEach(part => {
        ctx.fillRect(part.x, part.y, snakeSize, snakeSize);
      });
    }

function drawApple() {
      ctx.fillStyle = appleColor;
      ctx.fillRect(apple.x, apple.y, snakeSize, snakeSize);
    }

function drawGame() {
      ctx.clearRect(0, 0, canvas.width, canvas.height);
      drawSnake();
      drawApple();
    }

function moveSnake() {
      const head = { x: snake[0].x + dx, y: snake[0].y + dy };
      snake.unshift(head);
      if (head.x === apple.x && head.y === apple.y) {
        apple.x = Math.floor(Math.random() * canvas.width / snakeSize) * snakeSize;
        apple.y = Math.floor(Math.random() * canvas.height / snakeSize) * snakeSize;
      } else {
        snake.pop();
      }
    }

function changeDirection(event) {
      const keyPressed = event.key;
      if (keyPressed === "ArrowLeft" && dx !== snakeSize) {
        dx = -snakeSize;
        dy = 0;
      } else if (keyPressed === "ArrowRight" && dx !== -snakeSize) {
        dx = snakeSize;
        dy = 0;
      } else if (keyPressed === "ArrowUp" && dy !== snakeSize) {
        dx = 0;
        dy = -snakeSize;
      } else if (keyPressed === "ArrowDown" && dy !== -snakeSize) {
        dx = 0;
        dy = snakeSize;
      }
    }

function checkCollision() {
      if (snake[0].x < 0 || snake[0].x >= canvas.width || snake[0].y < 0 || snake[0].y >= canvas.height) {
        clearInterval(gameInterval);
        alert("Game Over! Press OK to play again.");
        snake = [{ x: 100, y: 100 }];
        dx = 0;
        dy = 0;
        apple = { x: 200, y: 200 };
        gameInterval = setInterval(updateGame, 100);
      }
      snake.slice(1).forEach(part => {
        if (part.x === snake[0].x && part.y === snake[0].y) {
          clearInterval(gameInterval);
          alert("Game Over! Press OK to play again.");
          snake = [{ x: 100, y: 100 }];
          dx = 0;
          dy = 0;
          apple = { x: 200, y: 200 };
          gameInterval = setInterval(updateGame, 100);
        }
      });
    }

function updateGame() {
      moveSnake();
      checkCollision();
      drawGame();
    }

document.addEventListener("keydown", changeDirection);
    
    let gameInterval = setInterval(updateGame, 100);
  </script>
</body>
</html>