Nebula

A work in progress game server emulator for a certain anime game.

For any extra support, questions, or discussions, check out our Discord.

Notable features

• Basic profile features
• Character system implemented (except for affinity)
• Inventory/Discs working
• Energy system
• Mail system
• Story (untested)
• Daily quests
• Battle pass
• Gacha
• Friend system (sending energy not implemented)
• Shop (using only in-game currency)
• Commissions
• Heartlink (missing advanced affinity related features)
• Monoliths (completeable but many other features missing)
• Bounty Trials
• Menance Arena
• Proving grounds
• Catacylsm Survivor (talents not fully working, score not calculated properly)
• Boss Blitz

Not implemented

• Achievements
• Events

Running the server and client

Prerequisites

• Java 21

Recommended

• MongoDB 4.0+

Compiling the server

1. Open your system terminal, and compile the server with ./gradlew jar
2. Create a folder named resources in your server directory
3. Download the bin, language folders from a repository with datamined game data and place them into your resources folder.
4. Run the server with java -jar Nebula.jar from your system terminal. This server comes with a built-in internal MongoDB server for its database, so no Mongodb installation is required. However, it is highly recommended to install Mongodb anyway.

Connecting with the client (Fiddler method)

1. Log in with the client to an official server at least once to download game data.
2. Install and have Fiddler Classic running.
3. Copy and paste the following code into the Fiddlerscript tab of Fiddler Classic. Remember to save the fiddler script after you copy and paste it:

import System;
import System.Windows.Forms;
import Fiddler;
import System.Text.RegularExpressions;

class Handlers
{
    static function OnBeforeRequest(oS: Session) {
        if (oS.host.EndsWith(".yostarplat.com") || oS.host.EndsWith(".stellasora.global")) {
            oS.oRequest.headers.UriScheme = "http";
            oS.host = "localhost"; // This can also be replaced with another IP address.
        }
    }
};

4. If autoCreateAccount is set to true in the config, then you can skip this step. Otherwise, type /account create [account email] in the server console to create an account.
5. Login with your account name, the code field is ignored by the server and can be set to anything.

Server commands

Server commands need to be run in the server console OR in the signature edit menu of your profile.

!account {create | delete} [email] (reserved player uid) = Creates or deletes an account.
!char [all | {characterId}] lv(level) a(ascension) s(skill level) t(talent level) = Changes the properties of the targeted characters.
!disc [all | {discId}] lv(level) a(ascension) c(crescendo level) = Changes the properties of the targeted discs.
!give [item id] x[amount] = Gives the targeted player an item through the mail.
!giveall [characters | discs | materials] = Gives the targeted player items.
!mail = Sends the targeted player a system mail.
!reload = Reloads the server config.