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DirectDraw

 
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bio777
How do I cheat?
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Joined: 29 Jul 2009
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PostPosted: Wed Jul 29, 2009 5:35 pm    Post subject: DirectDraw Reply with quote
Greetings.

I have been trying to create a directdraw overlay for an FPS game so that I could draw my ESP over it (I have been using GDI and it flickers...)

The ESP values are obtained using ReadProcessMemory windows API function.

I would appreciate it if you could give me an example usage of directdraw overlay that you have made. There are some examples I have found but they are not for overlaying windows only full screen and they don't really work.

Thank you for your time.

PS: Thats how it looks like with GDI

turboimagehost [DOT] com/p/1924398/money_esp.JPG [DOT ]html

Last edited by bio777 on Wed Jul 29, 2009 8:16 pm; edited 1 time in total
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hcavolsdsadgadsg
I'm a spammer
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PostPosted: Wed Jul 29, 2009 6:06 pm    Post subject: Reply with quote
It's possible to use GDI and not get flicker, it flickers because it has no notion of synchronizing with the frames the game is drawing.

You can probably just hijack part of the games render loop, jump to a code cave where you draw your stuff, then go back.



Or you may just find it easier to hook the games DX / OGL interface and handle all your drawing like that.
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karmah
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Joined: 28 Jul 2009
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Location: Edinburgh UK
PostPosted: Wed Jul 29, 2009 6:13 pm    Post subject: Reply with quote
I think this might be what you're looking for (assuming you do mean direct3d and not directdraw)

http://www.gamedev.net/community/forums/topic.asp?topic_id=359794

You know what to do with the URL...


Instead of hooking the direct3create9, i've also seen a few mods with a wrapper d3d9.dll file, so once you have the juicy guts of the canvas, you can again do what you want with a few code hooks Smile

Hope it helps!
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dnsi0
I post too much
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PostPosted: Wed Jul 29, 2009 6:29 pm    Post subject: Reply with quote
karmah wrote:
I think this might be what you're looking for (assuming you do mean direct3d and not directdraw)

http://www.gamedev.net/community/forums/topic.asp?topic_id=359794

You know what to do with the URL...


Instead of hooking the direct3create9, i've also seen a few mods with a wrapper d3d9.dll file, so once you have the juicy guts of the canvas, you can again do what you want with a few code hooks Smile

Hope it helps!


That's the place where it got me started.
I nearly fell off of my chair when I saw DirectDraw and FPS...
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bio777
How do I cheat?
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PostPosted: Wed Jul 29, 2009 8:02 pm    Post subject: Reply with quote
Excuse me but no, the whole idea behind my cheat is to make it silent, it doesn't alter the game process in any way. Also the reason why I inquired about DirectDraw is because I saw what it does, it draws on top of anything at a hardware level, all screenshots come clean and it doesn't flicker.

So if anyone can help me with a simple example how to draw inside a window using a HWND I will greatly appreciate it.

In case you wonder why I use GDI in a d3d game, I have my own world to screen functions that the do the job beautifully.
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karmah
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PostPosted: Thu Jul 30, 2009 2:49 am    Post subject: Reply with quote
Without any sort of modification.. it might be hard to get either a synchronous paint with the GDI or even add directdraw capabilities to the window since... Im sure if you evn managed to overlay with D3D, when the buffer's painted to the screen you'd probably get all the pixels surrounting your image blanking out the rest of the screen..

You seen this done for real before?

An alternative without any modification:
You said you're playing windowed? You can get away with reshaping an alwaysontop window over your app I suppose.. just take into account the size of the draw window's titlebar and border?
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tombana
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PostPosted: Thu Jul 30, 2009 6:06 am    Post subject: Reply with quote
This is a part of my directdraw overlay code. You'll need to alter some stuff to make it work for you:

Code:

   if( FAILED(DirectDrawCreate(0, &lpDD, 0)) )
      return MessageBox(0, _T("DirectDrawCreate() failed!"), Caption, MB_ICONERROR);

   if( FAILED(lpDD->SetCooperativeLevel(0, DDSCL_NORMAL)) ){
      CleanUp();
      return MessageBox(0, _T("SetCooperativeLevel() failed!"), Caption, MB_ICONERROR);
   }

   DDSURFACEDESC ddsd;
   ZeroMemory(&ddsd, sizeof(ddsd));
   ddsd.dwSize = sizeof(ddsd);
   ddsd.dwFlags = DDSD_CAPS;
   ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE;
   if( FAILED(lpDD->CreateSurface(&ddsd, &lpPrimary, 0)) ){
      CleanUp();
      return MessageBox(0, _T("CreateSurface(Primary) failed!"), Caption, MB_ICONERROR);
   }
   ZeroMemory(&ddsd, sizeof(ddsd));
   ddsd.dwSize = sizeof(ddsd);
   ddsd.dwFlags = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH;
   ddsd.ddsCaps.dwCaps = DDSCAPS_OVERLAY;
   ddsd.dwWidth = OVERLAY_WIDTH;
   ddsd.dwHeight = OVERLAY_HEIGHT;
   if( FAILED(lpDD->CreateSurface(&ddsd, &lpOverlay, 0)) ){
      CleanUp();
      return MessageBox(0, _T("CreateSurface(Overlay) failed!"), Caption, MB_ICONERROR);
   }
   ZeroMemory(&ddsd, sizeof(ddsd));
   ddsd.dwSize = sizeof(ddsd);
   ddsd.dwFlags = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH;
   ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN;
   ddsd.dwWidth = OVERLAY_WIDTH;
   ddsd.dwHeight = OVERLAY_HEIGHT;
   if( FAILED(lpDD->CreateSurface(&ddsd, &lpSource, 0)) ){
      CleanUp();
      return MessageBox(0, _T("CreateSurface(Source) failed!"), Caption, MB_ICONERROR);
   }


   HANDLE hBitmap = LoadImage(hInst, _T("dream.bmp"), IMAGE_BITMAP, OVERLAY_WIDTH, OVERLAY_HEIGHT, LR_LOADFROMFILE);
   if( !hBitmap ){
      CleanUp();
      return MessageBox(0, _T("LoadImage() failed!"), Caption, MB_ICONERROR);
   }

   HDC hdcSource;
   if( FAILED(lpSource->GetDC(&hdcSource)) ){
      CleanUp();
      return MessageBox(0, _T("GetDC() failed!"), Caption, MB_ICONERROR);
   }

   HDC hdcImage = CreateCompatibleDC(hdcSource);
   if( !hdcImage ){
      CleanUp();
      return MessageBox(0, _T("CreateCompatibleDC() failed!"), Caption, MB_ICONERROR);
   }

   if( SelectObject(hdcImage, hBitmap) ){
      BitBlt(hdcSource, 0, 0, OVERLAY_WIDTH, OVERLAY_HEIGHT, hdcImage, 0, 0, SRCCOPY);
   }
   lpSource->ReleaseDC(hdcSource);
   
   DeleteObject(hBitmap);

   DDCOLORKEY ColorKey;
   ColorKey.dwColorSpaceLowValue = 0;
   ColorKey.dwColorSpaceLowValue = 0xffffffff;
   lpSource->SetColorKey(DDCKEY_SRCBLT, &ColorKey);

   //Put the image on the overlay. DirectDraw will take care of the color formats
   lpOverlay->Blt(0, lpSource, 0, DDBLT_WAIT | DDBLT_KEYSRC, 0);

   //Enable the overlay on certain part of the screen:
   RECT DestRect;
   DestRect.left = 100;
   DestRect.top = 100;
   DestRect.right = DestRect.left + OVERLAY_WIDTH;
   DestRect.bottom = DestRect.top + OVERLAY_HEIGHT;
   DDOVERLAYFX fx = {0};
   fx.dwSize = sizeof(fx);
   fx.dckDestColorkey.dwColorSpaceLowValue  = 0;
   fx.dckDestColorkey.dwColorSpaceHighValue = 0xffffffff;
   lpOverlay->UpdateOverlay(0, lpPrimary, &DestRect, DDOVER_SHOW | DDOVER_DDFX | DDOVER_KEYSRCOVERRIDE, &fx);


//If you would want to hide the overlay:
//lpOverlay->UpdateOverlay(0, lpPrimary, 0, DDOVER_HIDE, 0);
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bio777
How do I cheat?
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Joined: 29 Jul 2009
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PostPosted: Thu Jul 30, 2009 9:18 am    Post subject: Reply with quote
tombana wrote:
This is a part of my directdraw overlay code. You'll need to alter some stuff to make it work for you:


Thank you, I have went over the code and learned some things about directdraw.

I will try to implement it.

Edit: After some modifications I keep getting "CreateSurface(Overlay) failed!"
Just to clarify, which version are you using? It's not 7 because of the DDSURFACEDESC ddsd;
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