OpenGT

OpenGT is a modular, high-performance Growtopia Private Server emulator written in C++17.

It is designed to be clean, easy to maintain, and cross-platform compared to traditional monolithic Growtopia Server implementations.

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Features

• Cross-Platform Support: Compiles and runs on both Windows (MSVC / MinGW) and Linux (GCC / Clang) using CMake.
• Modular Multi-Node Design: Split into independent server services (OpenGT.Main, OpenGT.Logon, OpenGT.Trans, OpenGT.Messenger, OpenGT.Game) for easy maintenance and scalability.
• Modern C++17: Uses standard C++17 for clean, maintainable code without legacy OS lock-in.

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Building

Prerequisites

• C++17 compatible compiler (GCC 8+, Clang 7+, or MSVC 2019+)
• CMake 3.10 or higher

Build Instructions

Windows

cmake -B build -S .
cmake --build build --config Debug

Linux

sudo apt update && sudo apt install build-essential cmake
cmake -B build -S .
cmake --build build

Compiled binaries will be placed in the bin/ directory.

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Project Structure

• OpenGT.Main/: Main controller and session manager
• OpenGT.Gateway/: User gateway and relay service
• OpenGT.Logon/: Authentication and logon service
• OpenGT.Game/: User game service
• shared/: Shared networking, logger, and utility core
• bin/: Executables and configuration files

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Credits

• ENet: Reliable UDP networking library for multiplayer game protocols.
• RebillionXX: Original project concept and architecture design.
• OpenGT Contributors: Developers contributing to OpenGT.

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License

This project is licensed under the MIT License. See LICENSE for details.