add xinput shim option

README.md

@@ -21,8 +21,9 @@ This is not a virus, but you probably shouldn't believe a random file on the int
   - You can also run or create a shortcut to `MAXWELL.exe --launch_game ..` to launch the game automatically
   - Check `--help` for other command line switches
 - `MAXWELL.dll` also works with other generic DLL injectors
-- Also works with Wine 9
-- Might work with Proton, but trying to load MAXWELL through Steam will probably just make things more complicated
+- Also works with Wine 9 / Proton 9
+- You can also rename `MAXWELL.dll` to `xinput9_1_0.dll` and place it next to `Animal Well.exe` to load it without the injector
+  - Use the Steam launch options `PROTON_USE_WINED3D=1 WINEDLLOVERRIDES="xinput9_1_0=n,b" %command%` to load this on Proton
 - Doesn't seem to work with some builds of Goldberg's emulator if it has overlay enabled
   - To fix this, create a `Animal Well/steam_settings/disable_overlay.txt` file
 

dllmain.cpp

@@ -122,3 +122,16 @@ BOOL APIENTRY DllMain(HMODULE hModule, DWORD ul_reason_for_call,
 extern "C" __declspec(dllexport) const char *dll_version() {
   return get_version_cstr();
 }
+
+auto xinput = LoadLibraryA("c:\\Windows\\system32\\xinput9_1_0.dll");
+typedef DWORD(__stdcall *XInputFun)(DWORD, void *);
+auto xinput_get_state =
+    reinterpret_cast<XInputFun>(GetProcAddress(xinput, "XInputGetState"));
+auto xinput_set_state =
+    reinterpret_cast<XInputFun>(GetProcAddress(xinput, "XInputSetState"));
+extern "C" __declspec(dllexport) DWORD XInputGetState(DWORD a, void *b) {
+  return xinput_get_state(a, b);
+}
+extern "C" __declspec(dllexport) DWORD XInputSetState(DWORD a, void *b) {
+  return xinput_set_state(a, b);
+}