can someone tell me what is wrong with this code:

  


int Game_Init(void *parms, int num_parms)
{
	fin.open("map1.txt", ios::in);

// first create base IDirectDraw interface

	if (FAILED(DirectDrawCreate(NULL, &lpdd1, NULL)))
	return(0);

// now query for IDirectDraw7

	if (FAILED(lpdd1->QueryInterface(IID_IDirectDraw7,(LPVOID *)&lpdd7)))
	return(0);

// set cooperation to full screen

	if (FAILED(lpdd7->SetCooperativeLevel(main_window_handle,DDSCL_FULLSCREEN |
		DDSCL_ALLOWMODEX | DDSCL_EXCLUSIVE | DDSCL_ALLOWREBOOT)))
	return(0);


// set display mode

	if (FAILED(lpdd7->SetDisplayMode(WWIDTH,WHEIGHT,BPP,0,0)))
		return(0);

	DD_INIT_STRUCT(ddsd);
	ddsd.dwFlags = DDSD_CAPS | DDSD_BACKBUFFERCOUNT;
	ddsd.dwBackBufferCount = 1;
	ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE | DDSCAPS_COMPLEX | DDSCAPS_FLIP;
//create primary surface

	if (FAILED(lpdd7->CreateSurface(&ddsd, &lpddsprimary, NULL)))
	return 0;
//create offscreen surface

	offsurface = createsurface(WWIDTH,WHEIGHT,DDSCAPS_VIDEOMEMORY);
	ddsd.ddsCaps.dwCaps = DDSCAPS_BACKBUFFER;
	if (FAILED(lpddsprimary->GetAttachedSurface(&ddsd.ddsCaps, &lpddsback)))
	return(0); 

	if (!loadbitmap(&bitmap,"base1.bmp"))
	return(0);
	offsurface->Lock(NULL,&ddsd, DDLOCK_SURFACEMEMORYPTR | DDLOCK_WAIT,NULL);
// get video pointer to primary surfce

	UCHAR *image_buffer = (UCHAR *)ddsd.lpSurface;
	for (int x=0;x<WHEIGHT;x++)
	{
		memcpy(ℑ_buffer[x*ddsd.lPitch],&bitmap.buffer[x*WWIDTH*2],WWIDTH*2);
	}
	if (FAILED(offsurface->Unlock(NULL)))
	return 0;
	readmap();
	unloadbitmap(&bitmap);
	fin.close();
	return 1; 
}

int Game_Main(void *parms, int num_parms)
{
	// make sure this isn't executed again

	if (window_closed)
		return(0);

// for now test if user is hitting ESC and send WM_CLOSE

	if (KEYDOWN(VK_ESCAPE))
	{
		PostMessage(main_window_handle,WM_CLOSE,0,0);
		window_closed = 1;
	} // end if

		drawmap();
		lpddsprimary->Flip(NULL, DDFLIP_WAIT);
	return 1;
} // end Game_Main


  

Edited by - omegasyphon on 12/28/00 12:08:51 AM

you need to tell us what AREA you are having probelm with and EXPLAIN WTF you are trying to do before asking a question like this... gezz.. PLUS I see that it looks like code for the book programing Tips of the Gurus... by Lamothe

You have a variable problem. It seems like you want offscreen to point to an off-screen buffer. But in the GetAttachedSurface() you used lpddsback.

what's the screen width?
whats the screen height?
how mny bits per pixel?




offsurface->Lock(NULL,&ddsd, DDLOCK_SURFACEMEMORYPTR | DDLOCK_WAIT,NULL);
// get video pointer to primary surfce
UCHAR *image_buffer = (UCHAR *)ddsd.lpSurface;
for (int x=0;x{
memcpy(ℑ_buffer[x*ddsd.lPitch],&bitmap.buffer[x*WWIDTH*2],WWIDTH*2);
}

if (FAILED(offsurface->Unlock(NULL)))
return 0;


there's the bug

DON'T mix up LaMothe's code with high-color modes if you are learning the basics.







Edited by - myself on December 28, 2000 1:01:03 PM

well my screen is 800x600 16 bit

it wont run it just quits when i run it.
i am curious as how i can restructure my init file so its
coded better