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Added support for loading BLOCKMAP lumps from MAPXX.wad maps in /Maps/ in PK3s

This commit is contained in:
Monster Iestyn 2018-01-09 19:43:59 +00:00
parent 0e8db59f4b
commit 2d98da3bcb
1 changed files with 97 additions and 27 deletions
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124
src/p_setup.c
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@ -1893,6 +1893,30 @@ static void P_CreateBlockMap(void)
}
}
// Split from P_LoadBlockMap for convenience
// -- Monster Iestyn 08/01/18
static void P_ReadBlockMapLump(INT16 *wadblockmaplump, size_t count)
{
size_t i;
blockmaplump = Z_Calloc(sizeof (*blockmaplump) * count, PU_LEVEL, NULL);
// killough 3/1/98: Expand wad blockmap into larger internal one,
// by treating all offsets except -1 as unsigned and zero-extending
// them. This potentially doubles the size of blockmaps allowed,
// because Doom originally considered the offsets as always signed.
blockmaplump[0] = SHORT(wadblockmaplump[0]);
blockmaplump[1] = SHORT(wadblockmaplump[1]);
blockmaplump[2] = (INT32)(SHORT(wadblockmaplump[2])) & 0xffff;
blockmaplump[3] = (INT32)(SHORT(wadblockmaplump[3])) & 0xffff;
for (i = 4; i < count; i++)
{
INT16 t = SHORT(wadblockmaplump[i]); // killough 3/1/98
blockmaplump[i] = t == -1 ? (INT32)-1 : (INT32) t & 0xffff;
}
}
//
// P_LoadBlockMap
//
@ -1919,38 +1943,20 @@ static boolean P_LoadBlockMap(lumpnum_t lumpnum)
return false;
{
size_t i;
INT16 *wadblockmaplump = malloc(count); //INT16 *wadblockmaplump = W_CacheLumpNum (lump, PU_LEVEL);
if (wadblockmaplump) W_ReadLump(lumpnum, wadblockmaplump);
else return false;
if (!wadblockmaplump)
return false;
W_ReadLump(lumpnum, wadblockmaplump);
count /= 2;
blockmaplump = Z_Calloc(sizeof (*blockmaplump) * count, PU_LEVEL, 0);
// killough 3/1/98: Expand wad blockmap into larger internal one,
// by treating all offsets except -1 as unsigned and zero-extending
// them. This potentially doubles the size of blockmaps allowed,
// because Doom originally considered the offsets as always signed.
blockmaplump[0] = SHORT(wadblockmaplump[0]);
blockmaplump[1] = SHORT(wadblockmaplump[1]);
blockmaplump[2] = (INT32)(SHORT(wadblockmaplump[2])) & 0xffff;
blockmaplump[3] = (INT32)(SHORT(wadblockmaplump[3])) & 0xffff;
for (i = 4; i < count; i++)
{
INT16 t = SHORT(wadblockmaplump[i]); // killough 3/1/98
blockmaplump[i] = t == -1 ? (INT32)-1 : (INT32) t & 0xffff;
}
P_ReadBlockMapLump(wadblockmaplump, count);
free(wadblockmaplump);
bmaporgx = blockmaplump[0]<<FRACBITS;
bmaporgy = blockmaplump[1]<<FRACBITS;
bmapwidth = blockmaplump[2];
bmapheight = blockmaplump[3];
}
bmaporgx = blockmaplump[0]<<FRACBITS;
bmaporgy = blockmaplump[1]<<FRACBITS;
bmapwidth = blockmaplump[2];
bmapheight = blockmaplump[3];
// clear out mobj chains
count = sizeof (*blocklinks)* bmapwidth*bmapheight;
blocklinks = Z_Calloc(count, PU_LEVEL, NULL);
@ -1984,6 +1990,53 @@ static boolean P_LoadBlockMap(lumpnum_t lumpnum)
#endif
}
// This needs to be a separate function
// because making both the WAD and PK3 loading code use
// the same functions is trickier than it looks for blockmap
// -- Monster Iestyn 09/01/18
static boolean P_LoadRawBlockMap(UINT8 *data, size_t count, const char *lumpname)
{
#if 0
(void)data;
(void)count;
(void)lumpname;
return false;
#else
// Check if the lump is named "BLOCKMAP"
if (!lumpname || !memcmp(lumpname, "BLOCKMAP", 8) != 0)
{
CONS_Printf("No blockmap lump found for pk3!");
return false;
}
if (!count || count >= 0x20000)
return false;
CONS_Printf("Reading blockmap lump for pk3...");
// no need to malloc anything, assume the data is uncompressed for now
count /= 2;
P_ReadBlockMapLump((INT16 *)data, count);
bmaporgx = blockmaplump[0]<<FRACBITS;
bmaporgy = blockmaplump[1]<<FRACBITS;
bmapwidth = blockmaplump[2];
bmapheight = blockmaplump[3];
// clear out mobj chains
count = sizeof (*blocklinks)* bmapwidth*bmapheight;
blocklinks = Z_Calloc(count, PU_LEVEL, NULL);
blockmap = blockmaplump+4;
#ifdef POLYOBJECTS
// haleyjd 2/22/06: setup polyobject blockmap
count = sizeof(*polyblocklinks) * bmapwidth * bmapheight;
polyblocklinks = Z_Calloc(count, PU_LEVEL, NULL);
#endif
return true;
#endif
}
//
// P_GroupLines
// Builds sector line lists and subsector sector numbers.
@ -2771,7 +2824,20 @@ boolean P_SetupLevel(boolean skipprecip)
UINT8 *wadData = W_CacheLumpNum(lastloadedmaplumpnum, PU_STATIC);
//filelump_t *fileinfo = wadData + ((wadinfo_t *)wadData)->infotableofs;
filelump_t *fileinfo = (filelump_t *)(wadData + ((wadinfo_t *)wadData)->infotableofs);
UINT32 numlumps = ((wadinfo_t *)wadData)->numlumps;
if (numlumps < ML_REJECT) // at least 9 lumps should be in the wad for a map to be loaded
{
I_Error("Bad WAD file for map %s!\n", maplumpname);
}
if (numlumps > ML_BLOCKMAP) // enough room for a BLOCKMAP lump at least
{
loadedbm = P_LoadRawBlockMap(
wadData + (fileinfo + ML_BLOCKMAP)->filepos,
(fileinfo + ML_BLOCKMAP)->size,
(fileinfo + ML_BLOCKMAP)->name);
}
P_LoadRawVertexes(wadData + (fileinfo + ML_VERTEXES)->filepos, (fileinfo + ML_VERTEXES)->size);
P_LoadRawSectors(wadData + (fileinfo + ML_SECTORS)->filepos, (fileinfo + ML_SECTORS)->size);
P_LoadRawSideDefs((fileinfo + ML_SIDEDEFS)->size);
@ -2780,6 +2846,10 @@ boolean P_SetupLevel(boolean skipprecip)
P_LoadRawSubsectors(wadData + (fileinfo + ML_SSECTORS)->filepos, (fileinfo + ML_SSECTORS)->size);
P_LoadRawNodes(wadData + (fileinfo + ML_NODES)->filepos, (fileinfo + ML_NODES)->size);
P_LoadRawSegs(wadData + (fileinfo + ML_SEGS)->filepos, (fileinfo + ML_SEGS)->size);
if (numlumps > ML_REJECT) // enough room for a REJECT lump at least
{
// placeholder
}
// Important: take care of the ordering of the next functions.
if (!loadedbm)