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Why OpenCore?

The Vision​

OpenCore is designed to solve the structural problems that have plagued FiveM development for years: spaghetti code, lack of testability, and tight coupling between resources.

By bringing modern software engineering patterns (Inversion of Control, Hexagonal Architecture, and Type-Safety) to the world of GTA V modding, we enable developers to build complex, maintainable, and high-performance game servers.

Key Pillars​

1. Architectural Integrity​

Stop writing global variables and nested callbacks. OpenCore enforces a clean separation between your business logic (Services), your entry points (Controllers), and the underlying game engine (Adapters/Ports).

2. True Modularity​

In FiveM, resources usually talk to each other via raw strings and events. OpenCore uses Ports and Adapters to provide type-safe, compiled interfaces across resources. If you change a method name in the Core, your other resources will fail at compile time, not runtime.

3. Developer Productivity​

  • Dependency Injection: Focus on logic, let the framework handle object instantiation.
  • Declarative Programming: Use decorators (@Server.Command, @Server.Guard) to describe what your code should do, not how to wire it up.
  • Dev Mode: Real-time feedback loops with Hot Reload and Player Simulation.

4. Scalability​

OpenCore is built for large-scale servers. From the built-in rate limiter to the optimized parallel processing service, the framework is designed to handle hundreds of players and complex interactions without breaking a sweat.

Is it for me?​

If you are tired of debugging nil values in Lua, fighting with inconsistent exports, or maintaining thousands of lines of unorganized code, OpenCore is for you. It's not just a library; it's a foundation for the next generation of FiveM servers.