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hzqst / MetaHookSv

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This is a porting of MetaHook for SvEngine (GoldSrc engine modified by Sven Co-op Team),

Mainly to keep you a good game experience in Sven Co-op.

Most of plugins are still compatible with vanilla GoldSrc engine. please check plugin docs for compatibility.



GitHub Release

Risk of VAC ?

Although using hook is likely to be dangerous in games, there is no VAC ban reported yet.

Btw Sven Co-op is not a game protected by VAC

You can even connect to a "VAC protected" server with -insecure, as VAC is not working at all in Sven Co-op.

Use a separate account to play Sven Co-op if you still worry about VAC ban wave. Sven Co-op is a free game.

One Click Installation

  1. Download from GitHub Release, then unzip it.

  2. Run install-to-SvenCoop.bat

  3. Launch game from shortcut MetaHook for SvenCoop or \SteamLibrary\steamapps\common\Sven Co-op\svencoop.exe

  • Other games follow the same instruction.

  • You should have your Steam running otherwise the SteamAppsLocation will probably not going to find GameInstallDir.

Manual Installation

  1. Download from GitHub Release, then unzip it.

  2. All required executable and resource files are in Build folder, pick whatever you want and copy them to \SteamLibrary\steamapps\common\Sven Co-op\.

  3. (Optional) Rename \SteamLibrary\steamapps\common\Sven Co-op\svencoop\metahook\configs\plugins_svencoop.lst to plugins.lst

  4. Launch game from Steam Game Library or \SteamLibrary\steamapps\common\Sven Co-op\svencoop.exe

  • The new svencoop.exe is renamed from metahook.exe, you could run game from "metahook.exe -game svencoop" however it will cause game crash when changing video settings.

  • Plugins can be disabled or enabled in \SteamLibrary\steamapps\common\Sven Co-op\svencoop\metahook\configs\plugins.lst

  • The SDL2.dll fixes a bug that the IME input handler from original SDL library provided by Valve was causing buffer overflow and game crash when using non-english IME. you don't need to copy it if you don't have a non-english IME. The SDL2.dll from Steam install dir is okay too (It should be at C:\Program Files (x86)\Steam if you didn't change install location at Steam installation)

Build Requirements

  1. Visual Studio 2017 / 2019 / 2022, with vc141 / vc142 / vc143 toolset

  2. CMake

  3. Git for Windows

Build Instruction

Let's assume that you have all requirements installed correctly.

  1. git clone https://github.com/hzqst/MetaHookSv

  2. Run build-initdeps.bat, wait until all required submodules / dependencies are pulled. (this may takes couple of minutes, depending on your network connection and download speed)

  3. Run build-MetaHook.bat, wait until svencoop.exe generated at Build directory.

  4. Run build-(SpecifiedPluginName).bat, wait until (SpecifiedPluginName).dll generated. Current available plugins : CaptionMod, Renderer, StudioEvents, SteamScreenshots, SCModelDownloader, CommunicationDemo, DontFlushSoundCache.

  5. If generated without problem, plugins should be at Build\svencoop\metahook\plugins\ directory.


  1. git clone https://github.com/hzqst/MetaHookSv (Ignore if you have already done this before)

  2. Run build-initdeps.bat, wait until all required submodules / dependencies are pulled. (Ignore if you have already done this before) (this may takes couple of minutes, depending on your network connection and download speed)

  3. Run debug-SvenCoop.bat (or debug-(WhateverGameYouWant).bat, depends on which you are going to debug with)

  4. Open MetaHook.sln with Visual Studio IDE, set specified project as launch project, compile the project, then press F5 to start debugging.

  • Other games follow the same instruction.

  • You should restart Visual Studio IDE to apply changes to debugging profile, if Visual Studio IDE was running.

MetaHookSv (V3) new features compare to nagist's old metahook (V2)

  1. New and better capstone API to disassemble and analyze engine code, new API to reverse search the function begin.

  2. Blocking duplicate plugins (which may introduce infinite-recursive calling) from loading.

  3. A transaction will be there at stage LoadEngine and LoadClient, to prevent InlineHook issued by multiple plugins from immediately taking effect. Allowing multiple plugins to SearchPattern and InlineHook same function without conflict.

Load Order

  1. \(GameDirectory)\metahook\configs\plugins_avx2.lst (Only when AVX2 instruction set is supported)

  2. \(GameDirectory)\metahook\configs\plugins_svencoop_avx2.lst or \(GameDirectory)\metahook\configs\plugins_goldsrc_avx2.lst (Only when AVX2 instruction set is supported)

  3. \(GameDirectory)\metahook\configs\plugins_avx.lst (Only when AVX instruction set is supported)

  4. \(GameDirectory)\metahook\configs\plugins_svencoop_avx.lst or \(GameDirectory)\metahook\configs\plugins_goldsrc_avx.lst (Only when AVX instruction set is supported)

  5. \(GameDirectory)\metahook\configs\plugins_sse2.lst (Only when SSE2 instruction set is supported)

  6. \(GameDirectory)\metahook\configs\plugins_svencoop_sse2.lst or \(GameDirectory)\metahook\configs\plugins_goldsrc_sse2.lst (Only when SSE2 instruction set is supported)

  7. \(GameDirectory)\metahook\configs\plugins_sse.lst (Only when SSE instruction set is supported)

  8. \(GameDirectory)\metahook\configs\plugins_svencoop_sse.lst or \(GameDirectory)\metahook\configs\plugins_goldsrc_sse.lst (Only when SSE instruction set is supported)

  9. \(GameDirectory)\metahook\configs\plugins.lst

  10. \(GameDirectory)\metahook\configs\plugins_svencoop.lst or \(GameDirectory)\metahook\configs\plugins_goldsrc.lst

  • MetahookSv loader will load the first available plugin list file, then load the dll(s) listed in the file.



A subtitle plugin designed for displaying subtitles and translate in-game HUD text.



A plugin that transform player model into ragdoll when player is dead or being caught by barnacle.



A graphic enhancement plugin that modifiy the original render engine.

You can even play with 200k epolys models and still keep a high framerate.



This plugin can block studio-event sound spamming with controllable cvars.


SteamScreenshots (Sven Co-op only)

This plugin intercepts snapshot command and replace it with ISteamScreenshots interface which will upload the snapshot to Steam Screenshot Manager.

SCModelDownloader (Sven Co-op only)

This plugin downloads missing player models from https://wootguy.github.io/scmodels/ automatically and reload them once mdl files are ready.

Cvar : scmodel_autodownload 0 / 1 Automatically download missing model from scmodel database.

Cvar : scmodel_downloadlatest 0 / 1 Download latest version of this model if there are multiple ones with different version.

Cvar : scmodel_usemirror 0 / 1 Use mirror (cdn.jsdelivr.net) if github is not available.

CommunicationDemo (Sven Co-op only)

This plugin exposes an interface to communicate with Sven Co-op server.

DontFlushSoundCache (Sven Co-op only)

This plugin prevents client from flushing soundcache at retry (engine issues retry command everytime when HTTP download progress is finished), make it possible to preserve soundcache txt downloaded from fastdl resource server (sv_downloadurl).

The fastdl procedure only works when game server uploads current map's soundcache txt to the fastdl resource server. (I am using AliyunOSS)

The reason why I made this plugin is because transfering soundcache txt via UDP netchannel is really not a good idea as server bandwidth and file IO resource is expensive.

ABCEnchance (third-party) (Sven Co-op only)

ABCEnchance is a metahook plugin that provides experience improvement for Sven co-op.

  1. CSGO style health and ammo HUD
  2. Annular weapon menu
  3. Dynamic damage indicator
  4. Dynamic crosshair
  5. Minimap which is rendered at real time
  6. Teammate health, armor and name display with floattext.
  7. Some useless blood efx


HUDColor (third-party) (Sven Co-op only)

Changing HUD colors in game.


MetaAudio (third-party) (GoldSrc only)

This is a plugin for GoldSrc that adds OpenAL support to its sound system. This fork fixes some bugs and uses Alure instead of OpenAL directly for easier source management.

Since SvEngine uses FMOD as it's sound system, you really shouldn't use this plugin in Sven Co-op.



MetaHook的SvenCoop移植版本 expand collapse
C++ and 5 more languages


No release





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