Orbita is a multiplayer 2D space MMO, powered by a Unity client and a custom C# server.
It features smooth real-time movement and rotation with client-side interpolation, efficient TCP networking, and a clean, modular architecture via shared protocol and dependency injection.

This project is made for learning purpose and is far from finished

• 🌌 Unity-based 2D space environment with player and NPC ships
• 🛰️ Real-time movement with buffered interpolation and smooth rotation
• 📡 Custom C# TCP server using lightweight protocol/message system (binary/text hybrid)
• 🔁 Shared protocol library between client and server for consistent communication
• ⚔️ Combat system with:
  • "In combat" state detection
  • Damage sync and feedback
  • Targeting logic and combat-aware UI updates
• 🎯 Display system:
  • Health/shield bars based on combat state or targeting
  • Always-on minimal self-health UI
  • Target indicators and nameplates
  • Smooth screen-space following using a world-space → UI bridge
• 🔄 Client-side Event Bus for clean decoupling of gameplay/UI logic
• 🧩 Dependency injection via VContainer for modular game systems
• ⏱️ Server tickrate control with stopwatch-based precision timing and profiler support
• 🗺️ Dynamic map loading from YAML configuration
• 🚪 Seamless map transitions, with optional black screen fade
• 🧠 Entity Component System architecture (movement, life, combat, targeting, display, etc.)
• 📦 Efficient packet handling — sends only changed state to reduce bandwidth
• 🧪 Built-in debug hooks and tools for smooth gameplay iteration

Prerequisites

• .NET 8.0 SDK or newer

Run the server

cd Server
dotnet run

Prerequisites

• Unity 2022.3 LTS or compatible version

Run the client

1. Open Game/ in Unity.
2. Press Play to launch the client.
3. By default, it connects to 127.0.0.1:7777.

You can build the client and launch two instances to test multiplayer.

• Server port: 7777
• Tick rate: 20 ticks/sec (configurable)
• Send rate: 20 packets/sec from client
• Interpolation delay: 100ms for remote smoothing

• Microsoft.Extensions.DependencyInjection – DI framework
• Serilog – logging
• Custom TCP implementation (no third-party networking libs)

• Unity 2D URP
• VContainer – DI for Unity
• TextMeshPro – for nameplates

The server includes a built-in profiler to track:

• Average and highest tick rate
• Packets sent/received per second
• Exposed via an API

• NPC movement & combat
• Spatial partitioning (quadtree or per-sector maps)
• Bullet/projectile system with hit validation
• Chat, inventory, skills
• Server-authoritative physics or collisions

MIT License — free to use, modify, and share.

Made by @Roxeez