#include <Windows.h>
#include <d3d9.h>
#include <d3dx9.h>
#pragma comment(lib, "d3d9.lib")
#pragma comment(lib, "d3dx9.lib")

#define pYellow  D3DCOLOR_ARGB( 255, 255, 255, 000 )
#define pRed  D3DCOLOR_ARGB( 255, 255, 000, 000 )
#define pGreen  D3DCOLOR_ARGB( 255, 000, 255, 000 )

typedef HRESULT (WINAPI* pEndScene)(LPDIRECT3DDEVICE9);
pEndScene  oEndScene  = NULL;
HRESULT WINAPI MyEndScene(LPDIRECT3DDEVICE9);

void *DetourFunc(BYTE *src, const BYTE *dst, const int len);

DWORD* Direct3D_VMTable = NULL;

bool ClossHair =     true;
HMODULE              D3D9;
LPDIRECT3D9          pD3D;
LPDIRECT3DDEVICE9    pDev;
D3DVIEWPORT9         Viewport;

LRESULT CALLBACK MsgProc(HWND hwnd,UINT uMsg,WPARAM wParam,LPARAM lParam){return DefWindowProc(hwnd, uMsg, wParam, lParam);}


VOID WINAPI MYHOOK( VOID )
{
    WNDCLASSEX wc = {sizeof(WNDCLASSEX),CS_CLASSDC,MsgProc,0L,0L, GetModuleHandle(NULL),NULL,NULL,NULL,NULL,"DX",NULL};
    RegisterClassEx(&wc);
    HWND hWnd = CreateWindow("DX",NULL,WS_OVERLAPPEDWINDOW,100,100,300,300,GetDesktopWindow(),NULL,wc.hInstance,NULL);

   while( D3D9 == NULL )
   {
      D3D9 = GetModuleHandleA( "d3d9.dll" );
      Sleep( 100 );
   }

    D3DPRESENT_PARAMETERS D3D_PP = {0};
    IDirect3D9 * (WINAPI *oDirect3DCreate9)(UINT SDKVersion);


   *(PDWORD)&oDirect3DCreate9 = (DWORD)GetProcAddress( D3D9, "Direct3DCreate9" );

   pD3D = oDirect3DCreate9( D3D_SDK_VERSION );

   D3D_PP.Windowed = TRUE;
   D3D_PP.SwapEffect = D3DSWAPEFFECT_DISCARD;
   D3D_PP.BackBufferFormat = D3DFMT_UNKNOWN;

   pD3D->CreateDevice( D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL,hWnd, D3DCREATE_SOFTWARE_VERTEXPROCESSING, &D3D_PP, &pDev );

   Direct3D_VMTable = *(DWORD**)pDev;
   {
       oEndScene = (pEndScene) DetourFunc((BYTE*)Direct3D_VMTable[42], (BYTE*) MyEndScene, 5);
   }

   Sleep( 400 );
   pDev->Release( );
   pD3D->Release( );
   DestroyWindow(hWnd);
}
void FuncCross(LPDIRECT3DDEVICE9 pDev, DWORD color, int i)
{
    pDev->GetViewport( &Viewport );
    DWORD ScreenCenterX = (Viewport.Width / 2);
    DWORD ScreenCenterY = (Viewport.Height / 2);
    D3DRECT rec1 = {ScreenCenterX-i, ScreenCenterY, ScreenCenterX+ i, ScreenCenterY+1};
    D3DRECT rec2 = {ScreenCenterX, ScreenCenterY-i, ScreenCenterX+ 1,ScreenCenterY+i};

    pDev->Clear( 1, &rec1, D3DCLEAR_TARGET, color, 0, 0 );
    pDev->Clear( 1, &rec2, D3DCLEAR_TARGET, color, 0, 0 );
}


HRESULT WINAPI MyEndScene (LPDIRECT3DDEVICE9 pDev)
{
    if(ClossHair)
    {
        FuncCross(pDev, pGreen, 50);
    }
    return oEndScene(pDev);
}


BOOL WINAPI DllMain( HINSTANCE hModule, DWORD dwReason, LPVOID lpvReserved )
{
   if( dwReason == DLL_PROCESS_ATTACH )
   {
      CreateThread( NULL, NULL, (LPTHREAD_START_ROUTINE)MYHOOK, NULL, NULL, NULL);
      MessageBox(NULL,"Credits : JasperXD","JasperXD pub v1 Crosshair",NULL);
   }
   return TRUE;
}

void *DetourFunc(BYTE *src, const BYTE *dst, const int len)
{
    BYTE *jmp = (BYTE*)malloc(len+5);
    DWORD dwback;

    VirtualProtect(src, len, PAGE_READWRITE, &dwback);

    memcpy(jmp, src, len);    jmp += len;

    jmp[0] = 0xE9;

    *(DWORD*)(jmp+1) = (DWORD)(src+len - jmp) - 5;

    src[0] = 0xE9;

    *(DWORD*)(src+1) = (DWORD)(dst - src) - 5;

    VirtualProtect(src, len, dwback, &dwback);

    return (jmp-len);
}