Provides a generic function hooking infrastructure using detours and trampolines. Supports multiple calling conventions (thiscall, stdcall, fastcall) and automatic argument forwarding. The HOOK_METHOD and HOOK_STATIC macros allow clean declaration of hooks with minimal boilerplate. This component is self-contained within libzhl and could be extracted for use in other Windows game modding projects.

Implements a fluent builder pattern for constructing and applying inline assembly patches at runtime. Supports register save/restore, relative jumps, calls, and arbitrary byte sequences. The ASMPatch class allows building patches declaratively, and the ASMPatcher applies them to target addresses. This is a reusable low-level utility for runtime code modification, independent of the game's specific structures.

Provides foundational Lua binding utilities used throughout the project. Includes RegisterNewClass for creating Lua userdata metatables, RegisterFunction for adding methods, LuaStackProtector for RAII stack balance checking, and LuaCaller for type-safe Lua function invocation. These patterns are generic and could be reused in any C++ project that needs to expose classes to Lua.

Defines a generic binary save file abstraction with chunk-based structure, checksum validation, and read/write operations. The SaveFile class handles file I/O, checksum computation, and chunk iteration. It is designed for the game's save format but the pattern (header, chunks, checksums) is reusable for any binary save system requiring integrity verification.

Implements a tree-based UI element system that can be constructed and manipulated from Lua. Elements (windows, menus, tabs, inputs) have children, callbacks, and data storage. The DrawElements function recursively renders the tree using ImGui. This pattern decouples UI structure from rendering logic and is reusable for any project that wants to expose a dynamic UI to a scripting language.