A client-side modding framework, plugin collection and toolchain for GoldSrc / Sven Co-op.

MetaHookSv is a port of MetaHook to SvEngine, the GoldSrc engine modified by the Sven Co-op team. It launches the game with a plugin host compiled in and exposes a stable C++ API, so client-side plugins can hook the engine without modifying the game's own files.

Most plugins still work on vanilla GoldSrc — check each plugin's own documentation for engine compatibility.

• Renderer — a graphics enhancement plugin that completely overhauls the legacy GoldSrc renderer with OpenGL 4.4.
• VGUI2Extension — a VGUI2 modding framework other plugins use to hook and patch VGUI2 components; adds multi-byte text, HiDPI and input-method support.
• CaptionMod — closed captions, HUD text translation and a Source-2007-style chat dialog.
• SteamScreenshots — takes over the snapshot command and sends the captured image to the Steam Screenshot Manager.

• BulletPhysics — client physics: ragdolls, jiggle bones, collision with moving brushes, buoyancy and barnacle/gargantua interactions.
• SCCameraFix — fixes spectator/chase camera glitches (Sven Co-op only).
• StudioEvents — filters studio-event sounds to stop repeated or overlapping playback.
• SCModelDownloader — downloads missing player models from the scmodel database and reloads them once ready (Sven Co-op only).

• BetterSpray — upgrades the spray system with external and high-res images, correct aspect ratios, dynamic reloading and Steam sharing.
• ResourceReplacer — redirects model and sound loading through global and per-map .gmr / .gsr rules.
• PrecacheManager — adds a command that dumps every precached sound, model and generic file next to the map.
• ThreadGuard — waits for engine threads to finish before a module unloads, fixing crash-on-exit.
• HeapPatch — breaks through the GoldSrc heap limitation.
• HUDColor — changes HUD colors in game; also serves as a compact sample plugin. Forked from DrAbcOfficial/HUDColor.

Third-party plugins such as ABCEnchance, halflife-cli, MetaAudio and Trinity-EngineSv are covered in the main README.

Shared libraries consumed by the plugins above:

• SteamAPIBridge — the shared SteamAPIBridge.dll behind SteamScreenshots, BetterSpray and UtilHTTPClient_SteamAPI.
• UtilAssetsIntegrity — validates GoldSrc StudioModel assets and indexed-color BMP images.
• UtilHTTPClient_SteamAPI — HTTP client built on the Steamworks HTTP API.
• UtilHTTPClient_libcurl — HTTP client built on libcurl.
• UtilThreadTask — a standalone task queue.

Mirrors kept so the build stays reproducible:

• SteamSDK — mirror of the Steamworks SDK (© Valve Corporation).
• MemoryModulePP — mirror of bb107/MemoryModulePP with CMake support.

• BSPLocalizationTools — toolsets for GoldSrc BSP localization (C#).
• SteamAppsLocation — a Windows x86 CLI that locates an installed Steam game by AppId.
• MetahookInstaller — GUI installer and CLI (see Core).