Snake Game

Greasy Fork is available in English.
Snake Game

Play Snake on any webpage by pressing 'S'
Skrip ini tidak untuk dipasang secara langsung. Ini adalah pustaka skrip lain untuk disertakan dengan direktif meta // @require https://update.greasyfork.org/scripts/491883/1355808/Snake%20Game.js
Ask a question, post a review, or report the script.
Wrap lines
// ==UserScript==
// @name         Snake Game
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Play Snake on any webpage by pressing 'S'
// @author       You
// @match        https://*/*
// @match        http://*/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    let snakeInterval;
    let snake;
    let food;
    let direction;
    let score;

    function initSnake() {
        snake = [{x: 10, y: 10}];
        food = getRandomPosition();
        direction = 'right';
        score = 0;
        snakeInterval = setInterval(moveSnake, 100);
    }

    function getRandomPosition() {
        return {
            x: Math.floor(Math.random() * 20),
            y: Math.floor(Math.random() * 20)
        };
    }

    function moveSnake() {
        const head = { ...snake[0] };

        switch (direction) {
            case 'up':
                head.y--;
                break;
            case 'down':
                head.y++;
                break;
            case 'left':
                head.x--;
                break;
            case 'right':
                head.x++;
                break;
        }

        if (head.x < 0 || head.x >= 20 || head.y < 0 || head.y >= 20 || isSnakeCollided(head)) {
            clearInterval(snakeInterval);
            alert('Game Over! Score: ' + score);
            initSnake();
            return;
        }

        snake.unshift(head);

        if (head.x === food.x && head.y === food.y) {
            score++;
            food = getRandomPosition();
        } else {
            snake.pop();
        }

        drawSnake();
    }

    function isSnakeCollided(head) {
        return snake.some(segment => segment.x === head.x && segment.y === head.y);
    }

    function drawSnake() {
        const canvas = document.getElementById('snakeCanvas');
        const ctx = canvas.getContext('2d');

        ctx.clearRect(0, 0, canvas.width, canvas.height);

        snake.forEach(segment => {
            ctx.fillStyle = 'green';
            ctx.fillRect(segment.x * 20, segment.y * 20, 20, 20);
        });

        ctx.fillStyle = 'red';
        ctx.fillRect(food.x * 20, food.y * 20, 20, 20);
    }

    function handleKeydown(event) {
        switch (event.key) {
            case 'ArrowUp':
                direction = 'up';
                break;
            case 'ArrowDown':
                direction = 'down';
                break;
            case 'ArrowLeft':
                direction = 'left';
                break;
            case 'ArrowRight':
                direction = 'right';
                break;
            case 's':
            case 'S':
                if (!snakeInterval) {
                    initSnake();
                }
                break;
        }
    }

    function createCanvas() {
        const canvas = document.createElement('canvas');
        canvas.id = 'snakeCanvas';
        canvas.width = 400;
        canvas.height = 400;
        canvas.style.border = '1px solid black';
        canvas.style.position = 'fixed';
        canvas.style.top = '50%';
        canvas.style.left = '50%';
        canvas.style.transform = 'translate(-50%, -50%)';
        canvas.style.zIndex = '9999';
        document.body.appendChild(canvas);
    }

    createCanvas();
    document.addEventListener('keydown', handleKeydown);

})();