dllmain.cpp

#include "stdafx.h"

struct Screen
{
    int32_t Width;
    int32_t Height;
    float fWidth;
    float fHeight;
    float fAspectRatio;
} Screen;

void Init()
{
    if (!Screen.Width || !Screen.Height)
        std::tie(Screen.Width, Screen.Height) = GetDesktopRes();

    Screen.fWidth = static_cast<float>(Screen.Width);
    Screen.fHeight = static_cast<float>(Screen.Height);
    Screen.fAspectRatio = (Screen.fWidth / Screen.fHeight);

    auto pattern = hook::pattern("D9 05 ? ? ? ? D8 73 68 D9 05 ? ? ? ? D8 73 6C D9 C9"); //0x4460E7
    struct SetScaleHook
    {
        void operator()(injector::reg_pack& regs)
        {
            static float fScaleValue = ((1.0f / Screen.fAspectRatio) * (4.0f / 3.0f));
            _asm fld    dword ptr[fScaleValue]
        }
    }; injector::MakeInline<SetScaleHook>(pattern.get_first(0), pattern.get_first(6));
}

CEXP void InitializeASI()
{
    std::call_once(CallbackHandler::flag, []()
        {
            CallbackHandler::RegisterCallback(Init, hook::pattern("83 EC 58 53 56 57 89 65 E8"));
        });
}

BOOL APIENTRY DllMain(HMODULE hModule, DWORD reason, LPVOID lpReserved)
{
    if (reason == DLL_PROCESS_ATTACH)
    {
        if (!IsUALPresent()) { InitializeASI(); }
    }
    return TRUE;
}