☰

Slither.io auto play bot 2025

auto play bot for slither.io

// ==UserScript==
// @name Slither.io auto play bot 2025
// @include     http://slither.com/io
// @author      Saarlooswolf
// @description auto play bot for slither.io 
// @namespace    http://tampermonkey.net/
// @version      0.2.1
// @match        *://Slither.com/io/*
// @license MIT License
// ==/UserScript==

/*Copyright 2025 Saarlooswolf

Permission is hereby granted, free of charge, to any person obtaining a copy of 
this software and associated documentation files (the “Software”), to deal in 
the Software without restriction, including without limitation the rights to 
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so, 
subject to the following conditions:

The above copyright notice and this permission notice shall be included in all 
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR 
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER 
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.*/

var el = document.getElementsByTagName('iframe');

for (var i = 0; i < el.length; i++) {
    var currentEl = el[i];
    currentEl.remove();
}

// remove the vote text
if (document.getElementById("votetxth") !== null) {
    document.getElementById("votetxth").remove()
}
if (document.getElementById("trumpbtnh") !== null) {
    document.getElementById("trumpbtnh").remove()
}
if (document.getElementById("kamalabtnh") !== null) {
    document.getElementById("kamalabtnh").remove()
}


if (window.top != window.self) 

REALSCORE = 10;
REALDNA = [1,1,1,1,1,1,1,1,1,1,1,1];

BESTRANK = 1000;
BESTSCORE = 1;

printbot = function() {
	console.log("Dumping bot data:\nREALDNA = " + JSON.stringify(REALDNA) + ";\nREALSCORE = " + REALSCORE + ";\nBESTRANK = " + BESTRANK + ";\nBESTSCORE = " + BESTSCORE + ";");
}

savedna = function() {
	if(typeof(Storage) !== "undefined") {
		localStorage["REALSCORE"] = REALSCORE;
		localStorage["REALDNA"] = JSON.stringify(REALDNA);
		localStorage["BESTRANK"] = BESTRANK;
		localStorage["BESTSCORE"] = BESTSCORE;
	}		
}

cleardna = function() {
	localStorage.removeItem("REALSCORE");
	localStorage.removeItem("REALDNA");
	
	localStorage.removeItem("BESTRANK");
	localStorage.removeItem("BESTSCORE");
	
	REALSCORE = 30;
	BESTRANK = 1000;
	
	var distavoid = 90;
	var preykerroin = 5;
	var viholliskerroin = 544;
	var vaarakerroin = 200;
	var chargedistance = 500;
	var pakoondistance = 70;
	var keskikerroin = 2.0;
	var keskihakukerroin = 0.1;

	REALDNA = [distavoid,preykerroin,viholliskerroin,vaarakerroin,chargedistance,pakoondistance,keskikerroin,keskihakukerroin];
		
	TESTDNA = REALDNA.slice();
	TESTSCORE = REALSCORE;
	
	testingdna = 1;
	DNA = REALDNA.slice();
	
	savedna();
}

if(typeof(Storage) !== "undefined") {
    // Code for localStorage/sessionStorage.
	
	if (!localStorage.REALSCORE || !localStorage.REALDNA || !localStorage.BESTRANK || !localStorage.BESTSCORE) {
		cleardna();
	}
	else
	{
		REALSCORE = localStorage["REALSCORE"]*1;
		REALDNA = JSON.parse(localStorage["REALDNA"]);
		BESTRANK = localStorage["BESTRANK"]*1;
		BESTSCORE = localStorage["BESTSCORE"]*1;
	}
} else {
    // Sorry! No Web Storage support..
}


TESTDNA = REALDNA.slice();
TESTSCORE = REALSCORE;

testingdna = 1;
DNA = REALDNA.slice();

var injected_dead = true;

var lastscore = 0;
var bestscore = 0;

var lastrank = 0;
var bestrank = 1000;
var uhka = false;


var ruokakerroin = 1/40;
var ruokapower = 1;
var vihollispower = 2;
var vaarapower = 2;
var preypower = 1;
var keskipower = 1;


var preychase = true;

var learnrate = 0.3;
var	precision = 100;
var EnableBot = true;

	
INJECTED = function() {
	var kerroin = 10000;
    // Enable or disable bot if E is pressed.
    document.addEventListener('keydown', (event) => {
        var ShouldHandleKeyDown = true;
        if (event.key === 'e' && ShouldHandleKeyDown === true) {
            console.log("Enableing bot")
            EnableBot = !EnableBot;
        }
    });

	if (animating && EnableBot) {
		if (slither) {
			accelerate = false;
			injected_dead = false;
			
			//xm = grd-slither.xx;
			//ym = grd-slither.yy;
			
			xt = 0;
			yt = 0;
			
			mindist = grd;
			
			
			for (var i = 0; i < preys.length; i++) {
				xtd = (preys[i].xx-slither.xx);
				ytd = (preys[i].yy-slither.yy);
				
				dist = Math.sqrt(xtd*xtd + ytd*ytd);
				
				xt += xtd/Math.pow(dist,preypower+1)*DNA[1];
				yt += ytd/Math.pow(dist,preypower+1)*DNA[1];
				
				if (dist < DNA[4] && preychase)
				{
					accelerate = true;
				}
			}

			uhka = false;
			for (var i = 0; i < slithers.length; i++) {
				//alert(myStringArray[i]);
				
				target = slithers[i];
				
				if (slither.id!=target.id)
				{
					xtd = (target.xx-slither.xx);
					ytd = (target.yy-slither.yy);
					
					dist = Math.sqrt(xtd*xtd + ytd*ytd)-DNA[0];
					dist = Math.max(1, dist);
					
					xt += -xtd/Math.pow(dist,vihollispower+1)*DNA[2];
					yt += -ytd/Math.pow(dist,vihollispower+1)*DNA[2];
					
					
					
					if (dist < DNA[5])
					{
						accelerate = true;
					}
					
					if (dist<mindist)
					{
						uhka = target;
						mindist = dist;
						/*if (mindist<300)
						{
							accelerate = true;
						}*/
					}
					
					parts = target.pts;
					for (var k = 0; k < parts.length; k++)
					{
						part = parts[k];
					
						xtd = (part.xx-slither.xx);
						ytd = (part.yy-slither.yy);
						
						dist = Math.sqrt(xtd*xtd + ytd*ytd)-DNA[0];
						dist = Math.max(1, dist);
						
						xt += -xtd/Math.pow(dist,vaarapower+1)*DNA[3];
						yt += -ytd/Math.pow(dist,vaarapower+1)*DNA[3];
					}
		
				}
			}
			
						
			if (!(preychase && preys.length>0))
			{
				for (var i = 0; i < foods_c; i++) {
					//alert(myStringArray[i]);
					
					xtd = (foods[i].xx-slither.xx);
					ytd = (foods[i].yy-slither.yy);
					
					dist = Math.sqrt(xtd*xtd + ytd*ytd);
					
					//xt += Math.pow(ruokakerroin*foods[i].fw,2)*xtd/Math.pow(dist,ruokapower+1);
					//yt += Math.pow(ruokakerroin*foods[i].fw,2)*ytd/Math.pow(dist,ruokapower+1);
					xt += Math.pow(foods[i].gr,2)*xtd/Math.pow(dist,ruokapower+1);
					yt += Math.pow(foods[i].gr,2)*ytd/Math.pow(dist,ruokapower+1);
				}
						
				xtd = (grd-slither.xx);
				ytd = (grd-slither.yy);
				
				dist = Math.sqrt(xtd*xtd + ytd*ytd);
				
				xt += xtd/Math.pow(grd-dist,keskipower+1)*DNA[6];
				yt += ytd/Math.pow(grd-dist,keskipower+1)*DNA[6];
				
				xt += xtd/grd*DNA[7];
				yt += ytd/grd*DNA[7];
				
				
			}
			
			xm = xt*kerroin;
			ym = yt*kerroin;
			
			lsxm = -xm;
			lsym = -ym;
			
			if (accelerate)
			{
				setAcceleration(1);
			}
			else
			{
				setAcceleration(0);
			}
			
			//console.log("xx:" +  view_xx + "yy:" + view_yy);
			//console.log("slither.xx:" +  slither.xx + "slither.yy:" + slither.yy);
			//console.log("slither.fx:" +  slither.fx + "slither.fy:" + slither.fy);
			//console.log("fvx:" +  fvx + "fvy:" + fvy);
			//console.log("");
			
			//console.log("foods_c:" + foods_c);
			//console.log("slithers.length:" + slithers.length);
			
			//console.log("D:" + Math.sqrt(xm*xm + ym*ym));
			
			lastscore = Math.floor(150 * (fpsls[slither.sct] + slither.fam / fmlts[slither.sct] - 1) - 50) / 10;
			if (!lastscore)
			{
				lastscore = 1;
			}
			lastrank = rank;
			if (!lastrank)
			{
				lastrank = 500;
			}
		}
		else
		{
			if (!injected_dead)
			{
				injected_dead = true;
				
				if (lastscore>bestscore)
				{
					console.log("Last score: " + lastscore + "(new best)");
					bestscore = lastscore;
					
					BESTSCORE = bestscore;
				}
				else
				{
					console.log("Last score: " + lastscore + " Best: " + bestscore);
				}
				
				if (lastrank<bestrank)
				{
					console.log("Last rank: " + lastrank + "(new best)");
					bestrank = lastrank;
					
					BESTRANK = bestrank;
				}
				else
				{
					console.log("Last rank: " + lastrank + " Best: " + bestrank);
				}
				
				if (testingdna>0)
				{
					TESTSCORE = lastscore/(lastrank+1);

				}
				else
				{
					REALSCORE = (REALSCORE+lastscore/lastrank)/2;
				}
				lastscore = 0;

				for (var key in DNA)
				{		
					if (TESTSCORE > REALSCORE)
					{
						var mul = TESTSCORE/REALSCORE
						REALDNA[key] = (REALDNA[key] + TESTDNA[key]*mul)/(1+mul);
						REALDNA[key] = Math.round(REALDNA[key]*precision)/precision;
					}

					if (testingdna<0)
					{
						TESTDNA[key] = REALDNA[key] + REALDNA[key]*(Math.random() - Math.random())*learnrate;
						TESTDNA[key] = Math.round(TESTDNA[key]*precision)/precision;
					}
				}
				
				savedna();

				testingdna = -testingdna;

				if (testingdna>0)
				{
					DNA = TESTDNA.slice();
				}
				else
				{
					DNA = REALDNA.slice();
				}
				//console.log("DNA = [" + DNA + "];");
				
				setTimeout(connect, 3000);
				//console.log("Reconnecting");
			}
		}
	}
}

var injectbot = function() {
	if (typeof(redraw) != "undefined")
	{
		oldredraw = redraw;

		redraw = function() {
			INJECTED();
			oldredraw();
		}
		console.log("injected")
		window.onmousemove = null;
	}
	else
	{
		setTimeout(injectbot, 1000);
		console.log("retrying")
	}
}
injectbot();