☰

2048bot

Lie back and watch dumb bot play 2048!

当前为 2022-06-22 提交的版本，查看 最新版本。

// ==UserScript==
// @name         2048bot
// @namespace    http://tampermonkey.net/
// @version      0.9
// @description  Lie back and watch dumb bot play 2048!
// @author       boynextdesk
// @match        https://play2048.co/*
// @icon         https://play2048.co/favicon.ico
// @grant        none
// @license      GNU General Public License v3.0
// ==/UserScript==

(function() {
    // class="game-message game-over"
    // todo: inspect whether game is over
    // todo: train strategy after game-over
    // todo: set speed through page
    // todo: beautify layout
    'use strict';
    const aboveBox = document.getElementsByClassName("above-game")[0];
    const btnTemplate = document.getElementsByClassName("restart-button")[0];
    var speed = 10
    aboveBox.appendChild(btnTemplate.cloneNode(false));
    aboveBox.appendChild(btnTemplate.cloneNode(false));
    aboveBox.appendChild(btnTemplate.cloneNode(false));
    //
    const btns = document.getElementsByClassName("restart-button");
    //
    var btnStartAuto = btns[1]
    const startText = document.createTextNode("Start Auto");
    btnStartAuto.appendChild(startText)
    //
    var btnStopAuto = btns[2]
    const stopText = document.createTextNode("Stop Auto");
    btnStopAuto.appendChild(stopText)
    //
    var btnSpeedAuto = btns[3]
    const speedText = document.createTextNode("Change Speed");
    btnSpeedAuto.appendChild(speedText)
    //
    var moveOn = false
    var moveOneKey = function () {
        if(!moveOn){
            console.log("Cancelled.")
            return
        }
        var eventUp = new KeyboardEvent('keydown', {
            key: "w",
            keyCode: 87,
            which: 87,
            code: "KeyW",
            location: 0,
            description: "w"
        })
        var eventLeft = new KeyboardEvent('keydown' , {
            key: "a",
            keyCode: 65,
            which: 65,
            code: "KeyA",
            location: 0,
            description: "a"
        })
        var eventRight = new KeyboardEvent('keydown' , {
            key: "d",
            keyCode: 68,
            which: 68,
            code: "KeyD",
            location: 0,
            description: "d"
        })
        var eventDown = new KeyboardEvent('keydown' , {
            key: "s",
            keyCode: 83,
            which: 83,
            code: "KeyS",
            location: 0,
            description: "s"
        })
        document.tagName = "not input"
        var num = Math.random()
        var dispatchee = null
        if (num < 0.05) {
            dispatchee = eventDown;
            console.log("down");
        }else if(num < 0.10){
            dispatchee = eventRight;
            console.log("right");
        }else if(num < 0.55){
            dispatchee = eventLeft;
            console.log("left");
        }else{
            dispatchee = eventUp;
            console.log("up");
        }
        document.dispatchEvent(dispatchee)
    }

    //thanks to https://zeit.co/blog/async-and-await
    function sleep (time) {
        return new Promise((resolve) => setTimeout(resolve, time));
    }

    const startListener = async function () {
        console.log("start")
        moveOn = true;
        while (moveOn) {
            await sleep(70 * speed).then(moveOneKey)
            await sleep(10 * speed).then(() => {
                //const elements = document.getElementsByClassName("game-message game-over")
                // moveOn |= elements[0] == null;
            })
        }
    };

    const stopListener = function () {
        moveOn = false;
    }
    const speedListener = function () {
        if (speed == 1){
            console.log("switch to low speed")
            speed = 10
        }else{
            console.log("switch to fast speed")
            speed = 1
        }
    }

    btnStartAuto.addEventListener('click', startListener)
    btnStopAuto.addEventListener('click', stopListener)
    btnSpeedAuto.addEventListener('click', speedListener)

})();