☰

RoJoin

(WORKING AS OF 11/21/24) Allows you to join to any player in a Roblox game.

// ==UserScript==
// @name         RoJoin
// @namespace    http://tampermonkey.net/
// @version      1.1.2
// @description  (WORKING AS OF 11/21/24) Allows you to join to any player in a Roblox game.
// @author       ryi3r
// @license      MIT
// @match        https://www.roblox.com/*
// @grant        none
// ==/UserScript==

/*
The original script was made by PoseidonCoder.
You can find the original script in their Github.

The modified version (this script) was made by me, ryi3r.
Hook me up on Discord if you find any issues, my tag is `ryi3r`.
*/

"use strict";

let isRunning = false;

const delay = ms => new Promise(res => setTimeout(res, ms));

const getJson = (url, args = {}) => {
    if (!args.headers)
        args.headers = {};
    return fetch(url, args)
        .then((r) => r.json())
        .catch((e) => console.log("error:", e));
};

const inst = document.getElementById("running-game-instances-container");
if (inst) {
    const div = document.createElement("div");
    div.classList = "section";

    const header = document.createElement("h2");
    header.innerText = "RoJoin 1.1";
    div.appendChild(header);

    const img = document.createElement("img");
    img.height = "40";
    img.style = "margin-top: -6px; margin-bottom: 4px;";
    img.style.display = "none";
    div.appendChild(img);

    const form = document.createElement("form");
    div.appendChild(form);

    const input = document.createElement("input");
    input.classList = "input-field";
    input.placeholder = "Username";
    input.addEventListener("input", (e) => {
        search.disabled = e.target.value.length === 0;
    });
    form.appendChild(input);

    const search = document.createElement("button");
    search.classList = "btn-primary-md";
    search.style = "margin-left: 4px;";
    search.innerText = "Search";
    search.disabled = true;
    form.appendChild(search);


    const status = document.createElement("p");
    form.appendChild(status);

    const join = document.createElement("button");
    join.style.display = "none";
    join.innerText = "Join";
    join.classList = "btn-control-xs rbx-game-server-join game-server-join-btn btn-primary-md btn-min-width";
    div.appendChild(join);

    const copy = document.createElement("button");
    copy.style = "margin-left: 4px;";
    copy.style.display = "none";
    copy.innerText = "Copy Join Link";
    copy.classList = "btn-control-xs rg-btn btn-primary-md btn-min-width";
    div.appendChild(copy);

    inst.insertBefore(div, inst.firstChild);

    const placeID = location.href.match(/\d+/)[0];

    form.addEventListener("submit", async (event) => {
        event.preventDefault();

        if (isRunning)
            return;

        isRunning = true;
        try {
            join.style.display = "none";
            copy.style.display = "none";

            status.innerText = "Loading...";
            let userID;
            try {
                const profileData = await fetch(`https://www.roblox.com/users/profile?username=${input.value}`);
                if (!profileData.ok)
                    throw `User "${input.value}" not found`;
                userID = profileData.url.match(/\d+/)[0];
            }
            catch (e) {
                console.log("error:", e);
                status.innerText = `Error: ${e}`;
                img.style.display = "none";
                return;
            }
            const userThumb = (await getJson(`https://thumbnails.roblox.com/v1/users/avatar-headshot?userIds=${userID}&format=Png&size=150x150`)).data[0].imageUrl;
            img.src = userThumb.split("/").slice(0, -1).join("/") + "/isCircular";
            img.style.display = "";

            let cursor = null;
            let found = false;

            let serversSearched = 0;
            let serversStatus = "";

            while (true) {
                let url = `https://games.roblox.com/v1/games/${placeID}/servers/0?limit=100`;
                if (cursor)
                    url += "&cursor=" + cursor;
                const servers = await getJson(url, {
                    "credentials": "omit", // This may be slower, but will find the player if they're on a public server.
                }).catch(() => null);

                if (servers !== undefined && servers.data !== undefined) {
                    for (let i = 0; i < servers.data.length; i++) {
                        const place = servers.data[i];
                        if (!found) {
                            serversSearched++;
                            serversStatus = `Servers searched: ${serversSearched}`;
                            status.innerText = serversStatus;

                            if (place.playerTokens.length === 0)
                                return;

                            let data;
                            while (true) {
                                let body = [];

                                place.playerTokens.forEach((token) => {
                                    body.push({
                                        requestId: `0:${token}:AvatarHeadshot:150x150:png:regular`,
                                        type: "AvatarHeadShot",
                                        targetId: 0,
                                        token,
                                        format: "png",
                                        size: "150x150",
                                    });
                                });
                                try {
                                    data = await getJson("https://thumbnails.roblox.com/v1/batch", {
                                        method: "POST",
                                        headers: {
                                            "Content-Type": "application/json",
                                            Accept: "application/json",
                                        },
                                        body: JSON.stringify(body),
                                    });
                                    break;
                                } catch (e) {
                                    console.log("Error:", e);
                                    await delay(1000);
                                }
                            }
                            if (!data.data)
                                status.innerText = "Error: " + data;
                            else {
                                for (let k = 0; k < data.data.length; k++) {
                                    const thumb = data.data[k];
                                    if (thumb && thumb.imageUrl === userThumb) {
                                        found = true;

                                        status.innerText = `User found\n${serversStatus}\n${place.playing} of ${place.maxPlayers} people max`;
                                        join.style.display = "";
                                        join.onclick = () => {
                                            window.Roblox.GameLauncher.joinGameInstance(
                                                placeID,
                                                place.id,
                                            );
                                        };
                                        copy.style.display = "";
                                        copy.onclick = () => {
                                            copy.innerText = "Copied!";
                                            navigator.clipboard.writeText(`https://www.roblox.com/games/start?placeId=${placeID}&gameId=${place.id}`).finally(() => {
                                                delay(1000).then(() => {
                                                    copy.innerText = "Copy Join Link";
                                                });
                                            });
                                        };
                                        break;
                                    }
                                }
                            }
                        } else {
                            break;
                        }
                    }

                    cursor = servers.nextPageCursor;
                    if (!cursor || found)
                        break;
                    else {
                        let amount = 5;
                        while (amount > 0) {
                            let secDef = "seconds";
                            if (amount === 1)
                                secDef = "second";
                            status.innerText = `Waiting ${amount} ${secDef}...\n${serversStatus}`;
                            amount--;
                            await delay(1000);
                        }
                        status.innerText = `Continuing...\n${serversStatus}`;
                    }
                } else
                    await delay(1000); // Probably got rate limited...
            }

            if (!found)
                status.innerText = `User not found within the checked servers\n${serversStatus}`;
        } finally {
            isRunning = false;
        }
    });
}