Inspecting Game Code with Ghidra

See the Ghidra file in the moddingResources folder. Offset references in this article are references to specific points in the compiled game code (ex. +0x221ed0). Ghidra by default mounts the game code at base address 0x00400000. If you don't change it, Ghidra will show the example offset as the absolute address of 0x00621ed0. You can change the base address via Window -> Memory map -> Set Image Base (House icon)

In Ghidra, some labels of note include main, main_game_loop, and update_players.

Fibers

GGXXACPR uses Fibers to handle asynchronous code. When the game boots it converts it's main thread into a fiber with ConvertThreadToFiber (+0x10a046). New fibers are created through the create_fiber function. Fibers and their state data are managed in the named_fiber_array. From within a fiber, calling the winnt.h macro GetFiberData will return a pointer to the current fiber's entry in the named_fiber_array.