Draw Text in GL

[zero_tolerance]

By monkey6666

Works on any GL game.

// for glPrint()
HDC				hDC;
HFONT			hOldFont;				
HFONT			hFont;
UINT			FontBase, FontBaseUnderline, FontBaseBig;
bool                     bFontsBuild = 0;

// ----------------------------------------------------------------------

void BuildFonts()
{
	hDC			= wglGetCurrentDC();
		
	FontBase	= glGenLists(96);
	hFont		= CreateFont(-12, 0, 0, 0, FW_NORMAL,	FALSE, FALSE, FALSE, ANSI_CHARSET, OUT_TT_PRECIS, CLIP_DEFAULT_PRECIS, PROOF_QUALITY, FF_DONTCARE|DEFAULT_PITCH, "Courier"); //"Lucida Console");					
	hOldFont	= (HFONT) SelectObject(hDC, hFont);           
	wglUseFontBitmaps(hDC, 32, 96, FontBase);				
	SelectObject(hDC, hOldFont);							
	DeleteObject(hFont);	
		
	FontBaseUnderline = glGenLists(96);
	hFont			= CreateFont(-10, 0, 0, 0, FW_NORMAL, FALSE, TRUE, FALSE, ANSI_CHARSET, OUT_TT_PRECIS, CLIP_DEFAULT_PRECIS, PROOF_QUALITY, FF_DONTCARE|DEFAULT_PITCH, "Courier"); 					
	hOldFont		= (HFONT) SelectObject(hDC, hFont);           
	wglUseFontBitmaps(hDC, 32, 96, FontBaseUnderline);				
	SelectObject(hDC, hOldFont);							
	DeleteObject(hFont);

	FontBaseBig		= glGenLists(96);
	hFont			= CreateFont(-14, 0, 0, 0, FW_BOLD, FALSE, FALSE, FALSE, ANSI_CHARSET, OUT_TT_PRECIS, CLIP_DEFAULT_PRECIS, PROOF_QUALITY, FF_DONTCARE|DEFAULT_PITCH, "Courier"); 					
	hOldFont		= (HFONT) SelectObject(hDC, hFont);           
	wglUseFontBitmaps(hDC, 32, 96, FontBaseBig);				
	SelectObject(hDC, hOldFont);							
	DeleteObject(hFont);
	
	bFontsBuild = true;
}

// ----------------------------------------------------------------------

void glPrint(int x, int y, const char *fmt, ...)					
{
	if (!bFontsBuild) BuildFonts();

	if (fmt == NULL)	return;	

	glRasterPos2i(x,y);

	char		text[256];								
	va_list		ap;	

	va_start(ap, fmt);									
	vsprintf(text, fmt, ap);						
	va_end(ap);		

	glPushAttrib(GL_LIST_BIT);							
	glListBase(FontBase - 32);								
	glCallLists(strlen(text), GL_UNSIGNED_BYTE, text);	
	glPopAttrib();										
}

// ----------------------------------------------------------------------

void glPrintUnderline(int x, int y, const char *fmt, ...)					
{
	if (!bFontsBuild) BuildFonts();

	if (fmt == NULL)	return;	

	glRasterPos2i(x,y);

	char		text[256];								
	va_list		ap;	

	va_start(ap, fmt);									
	vsprintf(text, fmt, ap);						
	va_end(ap);		

	glPushAttrib(GL_LIST_BIT);							
	glListBase(FontBaseUnderline - 32);								
	glCallLists(strlen(text), GL_UNSIGNED_BYTE, text);	
	glPopAttrib();										
}

// ----------------------------------------------------------------------

void glPrintBig(int x, int y, const char *fmt, ...)					
{
	if (!bFontsBuild) BuildFonts();	
	
	if (fmt == NULL)	return;

	glRasterPos2i(x,y);

	char		text[256];								
	va_list		ap;	

	va_start(ap, fmt);
    vsprintf(text, fmt, ap);
	va_end(ap);

	glPushAttrib(GL_LIST_BIT);							
	glListBase(FontBaseBig - 32);								
	glCallLists(strlen(text), GL_UNSIGNED_BYTE, text);	
	glPopAttrib();										
}

creds Pansemuckl