Metin2 Client Executable: Understanding the Game Memory Layout
The Metin2 client is a 32-bit Windows executable. Understanding its memory layout helps when you are debugging issues, analyzing network traffic, or working with the game's data structures. This overview covers the basic architecture without diving into specific addresses that change between versions.
Process Memory Basics
When the Metin2 client runs, Windows allocates a virtual address space for the process. This space is divided into several regions. The executable code sits at the base address. Above it are the heap, stack, and loaded libraries.
The heap is where dynamic memory is allocated. Game objects like character data, item information, and UI elements are stored on the heap. The stack is used for function calls and local variables. Each thread gets its own stack.
Loaded Libraries
The Metin2 client loads several DLL files at startup. These include graphics libraries like DirectX, networking libraries, and the game's own modules. Each DLL occupies a region of the virtual address space.
The order in which DLLs load can vary between systems. This is why hardcoded addresses that work on one machine may fail on another. Tools that scan for patterns instead of using fixed addresses are more reliable across different installations.
Data Structures
Game data is stored in structures that the client reads from memory. Character position, health, and inventory are all stored in memory while the game runs. The exact layout of these structures can change when the game updates.
Network data arrives in packets that the client parses and stores in these structures. Understanding the packet format helps you understand how the client represents game state internally.
Working with Memory Safely
Reading game memory for debugging or analysis is a common practice. Writing to game memory is against the game's terms of service and can result in a ban. If you are working on a private server, you control the client and can modify it freely.
Tools like Cheat Engine can inspect process memory. For private server development, you typically work with the server-side code rather than modifying the client. The server sends packets that the client interprets, so understanding the packet format is more useful than modifying client memory.
Source
[1] EterNexus Project on GitHub
[2] Metin2 Development Community