C++ (Cpp) I_Realloc Examples

Example #1

File: p_saveg.c Project: bradharding/doomretro

//
// P_UnArchiveMap
//
void P_UnArchiveMap(void)
{
    if ((automapactive = saveg_read_bool()) || mapwindow)
        AM_Start(automapactive);

    if ((markpointnum = saveg_read32()))
    {
        markpoints = I_Realloc(markpoints, markpointnum * sizeof(*markpoints));

        for (int i = 0; i < markpointnum; i++)
        {
            markpoints[i].x = saveg_read32();
            markpoints[i].y = saveg_read32();
        }
    }

    if ((pathpointnum = saveg_read32()))
    {
        pathpoints = I_Realloc(pathpoints, pathpointnum * sizeof(*pathpoints));

        for (int i = 0; i < pathpointnum; i++)
        {
            pathpoints[i].x = saveg_read32();
            pathpoints[i].y = saveg_read32();
        }
    }
}

Example #2

File: r_plane.c Project: fabiangreffrath/crispy-doom

// [crispy] remove MAXVISPLANES limit
static void R_RaiseVisplanes (visplane_t** vp)
{
    if (lastvisplane - visplanes == numvisplanes)
    {
	int numvisplanes_old = numvisplanes;
	visplane_t* visplanes_old = visplanes;

	numvisplanes = numvisplanes ? 2 * numvisplanes : MAXVISPLANES;
	visplanes = I_Realloc(visplanes, numvisplanes * sizeof(*visplanes));
	memset(visplanes + numvisplanes_old, 0, (numvisplanes - numvisplanes_old) * sizeof(*visplanes));

	lastvisplane = visplanes + numvisplanes_old;
	floorplane = visplanes + (floorplane - visplanes_old);
	ceilingplane = visplanes + (ceilingplane - visplanes_old);

	if (numvisplanes_old)
	    fprintf(stderr, "R_FindPlane: Hit MAXVISPLANES limit at %d, raised to %d.\n", numvisplanes_old, numvisplanes);

	// keep the pointer passed as argument in relation to the visplanes pointer
	if (vp)
	    *vp = visplanes + (*vp - visplanes_old);
    }
}

Example #3

File: w_wad.c Project: bhdminh/uGFX

void W_AddFile (char *filename)
{
    wadinfo_t		header;
    lumpinfo_t*		lump_p;
    unsigned		i;
    int			handle;
    int			length;
    int			startlump;
    filelump_t*		fileinfo;
    filelump_t		singleinfo;
    int			storehandle;
    
    // open the file and add to directory

    // handle reload indicator.
    if (filename[0] == '~')
    {
	filename++;
	reloadname = filename;
	reloadlump = numlumps;
    }
		
    if ( (handle = I_FileOpenRead(filename)) == -1)
    {
	I_printf (" couldn't open %s\n",filename);
	return;
    }

    I_printf (" adding %s\n",filename);
    startlump = numlumps;
	
    if (strcmp (filename+strlen(filename)-3 , "wad" ) && strcmp (filename+strlen(filename)-3 , "WAD" ) )
    {
	// single lump file
	fileinfo = &singleinfo;
	singleinfo.filepos = 0;
	singleinfo.size = LONG(filelength(handle));
	ExtractFileBase (filename, singleinfo.name);
	numlumps++;
    }
    else 
    {
	// WAD file
	I_FileRead (handle, &header, sizeof(header));
	if (strncmp(header.identification,"IWAD",4))
	{
	    // Homebrew levels?
	    if (strncmp(header.identification,"PWAD",4))
	    {
		I_Error ("Wad file %s doesn't have IWAD "
			 "or PWAD id\n", filename);
	    }
	    
	    // ???modifiedgame = true;		
	}
	header.numlumps = LONG(header.numlumps);
	header.infotableofs = LONG(header.infotableofs);
	length = header.numlumps*sizeof(filelump_t);
	fileinfo = alloca (length);
	I_FilePos(handle, header.infotableofs);
	I_FileRead(handle, fileinfo, length);
	numlumps += header.numlumps;
    }

    
    // Fill in lumpinfo
    lumpinfo = I_Realloc (lumpinfo, numlumps*sizeof(lumpinfo_t));

    if (!lumpinfo)
	I_Error ("Couldn't realloc lumpinfo");

    lump_p = &lumpinfo[startlump];
	
    storehandle = reloadname ? -1 : handle;
	
    for (i=startlump ; i<numlumps ; i++,lump_p++, fileinfo++)
    {
	lump_p->handle = storehandle;
	lump_p->position = LONG(fileinfo->filepos);
	lump_p->size = LONG(fileinfo->size);
	strncpy (lump_p->name, fileinfo->name, 8);
    }
	
    if (reloadname)
	I_FileClose(handle);
}