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TinyModInjector

A very tiny (8KB!) mod injector. Poses as dinput8.dll, loads DLLs from NativeMods/.

How it works

  • You place the DLL next to the game executable (or in a directory that it looks for DLLs in).
  • The game loads the DLL instead of the real dinput8.dll.
  • On default configuration, the DLL loads other DLLs from NativeMods folder as soon as it's loaded (on DLL_PROCESS_ATTACH).
    On "delay" configuration, the DLL only does so when DirectInput8Create is called for the first time, which can be safer for some games (read: don't use it unless the default configuration causes the game to hard crash).
  • The real dinput8.dll (in System32 or SysWOW64) is loaded as necessary and calls are forwarded to it.

Supported games

  • GameMaker games (GMS1, GMS2)
  • Unreal Engine games (3, 4?)
  • Various random other games that load dinput8.dll (read: support DirectInput gamepads) - so long as you can figure out which directory(ies) the game is looking for DLLs in.

Versions

  • TinyModInjector-x86: 32-bit, loads mods immediately.
  • TinyModInjector-x86-delay: 32-bit, loads mods on first DirectInput8Create call.
  • TinyModInjector-x64: 64-bit, loads mods immediately.
  • TinyModInjector-x64-delay: 64-bit, loads mods on first DirectInput8Create call.

Debugging

If you need help figuring out whether the DLL and/or mods are getting loaded or not, you can add a -tmi-debug option to the game's command-line flags or create an empty text file called "tmi-debug" (so, tmi-debug.txt) in the game directory ("current working directory"). This will display message boxes on important events (DLL loaded, loading the real dinput8.dll, mods loaded).

Caveats

  • No API, just DLL loading - you'll want to make a DLL that implements an API for a game and then loads other mod DLLs from a different directory.

Compiling

Run build.bat - this invokes msbuild with different configurations and packages them using 7-zip (7z).

About

Made by YellowAfterlife

Inspired by an undocumented (yet most certainly alike) injector used in this Dishonored mod.

MIT license; if you want to bundle the DLL with your mod as a drop-in injector option, you can do so - credits are listed in DLL's "version info".