lastchaos-classic-emulator

health-potion

Installation

Set up the Database

Import the lastchaos.sql file into your MariaDB instance. This will set up the necessary database structure for the server.

Configure the Environment

Update the .env file with your database connection details.

Install Dependencies

Run npm install in your terminal. This will install all the necessary dependencies for the project.

Run the Servers

npm run loginserver
npm run gameserver

Client Version

This server is currently based on the following client:	Version	Nation	Release date
1107	USA	07.2008

You can download it here.

Client Installation

Modify Connection Details

Update the connection details in the sl.dta file. You can do this using the LastChaosDTA editor.
- Alternatively, you can download a pre-configured file from here.

Apply Patches

Apply the necessary client patches. These can be found in the Patches section of this document.

Launch the Client

Run the client by executing the following command: start bin/Nksp.exe 6574.

Log In

Use the credentials test:test to log in.

Tools

packet-sniffer

py ./tools/packet-sniffer.py --version <clientVersion> --packdefault <true/false>

Dumps sent/received packets into msglog.txt. The file is saved in your client directory. \ You need to have Python and Frida installed pip install frida to use it.

export-packet-definition

npm run tools/export-packet-definition <jsonfileName> <MessageType.h>

Export packet definitions from official sources into .json file.

convert-packet-dump

npm run tools/convert-packet-dump <packetDefinitionsFilePath> <packetDumpFilePath>

Converts first two bytes (which should be type and subtype) of every dumped packet in msglog.txt file into packet definition names.

also compatible with log.txt created by this this library

Patches

| File | Description | Offset(s) | From | To | | --- | --- | --- | --- | --- | | Engine.dll | IP Filter Patch | 0x107379 | 3C 3D 75 16 80 3D 29 C1 58 10 68 | E9 EC 03 00 00 90 90 90 90 90 90 | | Engine.dll | ReceiveFromServerNew() Encryption Patch | 0x11110F | 85 C0 7D 04 33 F6 EB 1F 8B 7B 04 8B C8 8B D1 C1 E9 02 8D B5 0C FC FF FF F3 A5 8B CA 83 E1 03 F3 A4 8B 75 08 89 43 10 | 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 | | Engine.dll | SendToServerNew() Encryption Patch | 0x111295 | 50 8D 4D BC E8 E2 0E 00 00 | 90 90 90 90 90 90 90 90 90 | | Engine.dll | RenderToolTip() Time Calculation Patch (WORLDTIME_MUL Removal) | 0x22268F, 0x222634, 0x2225DC | 18 | 01 | | EntitiesMP.dll | SendMyNextMovePosition() Tick Patch (1s -> 100ms) | 0x00ED880 | E8 03 00 00 | 64 00 00 00 |

You can download the patched game-ready files here:

Replace these files in the Bin folder.

5z3f / lastchaos-classic-emulator

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