mirror of
https://github.com/ZDoom/gzdoom.git
synced 2024-11-29 07:12:36 +00:00
416 lines
11 KiB
C++
416 lines
11 KiB
C++
/*
|
|
** p_openmap.cpp
|
|
**
|
|
** creates the data structures needed to load a map from the resource files.
|
|
**
|
|
**---------------------------------------------------------------------------
|
|
** Copyright 2005-2018 Christoph Oelckers
|
|
** Copyright 2005-2016 Randy Heit
|
|
** All rights reserved.
|
|
**
|
|
** Redistribution and use in source and binary forms, with or without
|
|
** modification, are permitted provided that the following conditions
|
|
** are met:
|
|
**
|
|
** 1. Redistributions of source code must retain the above copyright
|
|
** notice, this list of conditions and the following disclaimer.
|
|
** 2. Redistributions in binary form must reproduce the above copyright
|
|
** notice, this list of conditions and the following disclaimer in the
|
|
** documentation and/or other materials provided with the distribution.
|
|
** 3. The name of the author may not be used to endorse or promote products
|
|
** derived from this software without specific prior written permission.
|
|
**
|
|
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
**---------------------------------------------------------------------------
|
|
**
|
|
*/
|
|
|
|
#include "p_setup.h"
|
|
|
|
#include "cmdlib.h"
|
|
#include "filesystem.h"
|
|
#include "md5.h"
|
|
#include "g_levellocals.h"
|
|
#include "cmdlib.h"
|
|
|
|
#define IWAD_ID MAKE_ID('I','W','A','D')
|
|
#define PWAD_ID MAKE_ID('P','W','A','D')
|
|
|
|
|
|
inline bool P_IsBuildMap(MapData *map)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
//===========================================================================
|
|
//
|
|
// GetMapIndex
|
|
//
|
|
// Gets the type of map lump or -1 if invalid or -2 if required and not found.
|
|
//
|
|
//===========================================================================
|
|
|
|
struct checkstruct
|
|
{
|
|
const char lumpname[9];
|
|
bool required;
|
|
};
|
|
|
|
static int GetMapIndex(const char *mapname, int lastindex, const char *lumpname, bool needrequired)
|
|
{
|
|
static const checkstruct check[] =
|
|
{
|
|
{"", true},
|
|
{"THINGS", true},
|
|
{"LINEDEFS", true},
|
|
{"SIDEDEFS", true},
|
|
{"VERTEXES", true},
|
|
{"SEGS", false},
|
|
{"SSECTORS", false},
|
|
{"NODES", false},
|
|
{"SECTORS", true},
|
|
{"REJECT", false},
|
|
{"BLOCKMAP", false},
|
|
{"BEHAVIOR", false},
|
|
{"LIGHTMAP", false },
|
|
//{"SCRIPTS", false},
|
|
};
|
|
|
|
if (lumpname==NULL) lumpname="";
|
|
|
|
for(size_t i=lastindex+1;i<countof(check);i++)
|
|
{
|
|
if (!strnicmp(lumpname, check[i].lumpname, 8))
|
|
return (int)i;
|
|
|
|
if (check[i].required)
|
|
{
|
|
if (needrequired)
|
|
{
|
|
I_Error("'%s' not found in %s\n", check[i].lumpname, mapname);
|
|
}
|
|
return -2;
|
|
}
|
|
}
|
|
|
|
return -1; // End of map reached
|
|
}
|
|
|
|
//===========================================================================
|
|
//
|
|
// Opens a map for reading
|
|
//
|
|
//===========================================================================
|
|
|
|
MapData *P_OpenMapData(const char * mapname, bool justcheck)
|
|
{
|
|
MapData * map = new MapData;
|
|
FileReader * wadReader = nullptr;
|
|
bool externalfile = !strnicmp(mapname, "file:", 5);
|
|
|
|
if (externalfile)
|
|
{
|
|
mapname += 5;
|
|
if (!FileExists(mapname))
|
|
{
|
|
delete map;
|
|
return NULL;
|
|
}
|
|
map->resource = FResourceFile::OpenResourceFile(mapname);
|
|
wadReader = map->resource->GetReader();
|
|
}
|
|
else
|
|
{
|
|
FString fmt;
|
|
int lump_wad;
|
|
int lump_map;
|
|
int lump_name = -1;
|
|
|
|
// Check for both *.wad and *.map in order to load Build maps
|
|
// as well. The higher one will take precedence.
|
|
// Names with more than 8 characters will only be checked as .wad and .map.
|
|
if (strlen(mapname) <= 8) lump_name = fileSystem.CheckNumForName(mapname);
|
|
fmt.Format("maps/%s.wad", mapname);
|
|
lump_wad = fileSystem.CheckNumForFullName(fmt);
|
|
fmt.Format("maps/%s.map", mapname);
|
|
lump_map = fileSystem.CheckNumForFullName(fmt);
|
|
|
|
if (lump_name > lump_wad && lump_name > lump_map && lump_name != -1)
|
|
{
|
|
int lumpfile = fileSystem.GetFileContainer(lump_name);
|
|
int nextfile = fileSystem.GetFileContainer(lump_name+1);
|
|
|
|
map->lumpnum = lump_name;
|
|
|
|
if (lumpfile != nextfile)
|
|
{
|
|
// The following lump is from a different file so whatever this is,
|
|
// it is not a multi-lump Doom level so let's assume it is a Build map.
|
|
map->MapLumps[0].Reader = fileSystem.ReopenFileReader(lump_name);
|
|
if (!P_IsBuildMap(map))
|
|
{
|
|
delete map;
|
|
return NULL;
|
|
}
|
|
return map;
|
|
}
|
|
|
|
// This case can only happen if the lump is inside a real WAD file.
|
|
// As such any special handling for other types of lumps is skipped.
|
|
map->MapLumps[0].Reader = fileSystem.ReopenFileReader(lump_name);
|
|
strncpy(map->MapLumps[0].Name, fileSystem.GetFileFullName(lump_name), 8);
|
|
map->InWad = true;
|
|
|
|
int index = 0;
|
|
|
|
if (stricmp(fileSystem.GetFileFullName(lump_name + 1), "TEXTMAP") != 0)
|
|
{
|
|
for(int i = 1;; i++)
|
|
{
|
|
// Since levels must be stored in WADs they can't really have full
|
|
// names and for any valid level lump this always returns the short name.
|
|
const char * lumpname = fileSystem.GetFileFullName(lump_name + i);
|
|
try
|
|
{
|
|
index = GetMapIndex(mapname, index, lumpname, !justcheck);
|
|
}
|
|
catch(...)
|
|
{
|
|
delete map;
|
|
throw;
|
|
}
|
|
if (index == -2)
|
|
{
|
|
delete map;
|
|
return NULL;
|
|
}
|
|
if (index == ML_BEHAVIOR) map->HasBehavior = true;
|
|
|
|
// The next lump is not part of this map anymore
|
|
if (index < 0) break;
|
|
|
|
map->MapLumps[index].Reader = fileSystem.ReopenFileReader(lump_name + i);
|
|
strncpy(map->MapLumps[index].Name, lumpname, 8);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
map->isText = true;
|
|
map->MapLumps[1].Reader = fileSystem.ReopenFileReader(lump_name + 1);
|
|
for(int i = 2;; i++)
|
|
{
|
|
const char * lumpname = fileSystem.GetFileFullName(lump_name + i);
|
|
|
|
if (lumpname == NULL)
|
|
{
|
|
I_Error("Invalid map definition for %s", mapname);
|
|
}
|
|
else if (!stricmp(lumpname, "ZNODES"))
|
|
{
|
|
index = ML_GLZNODES;
|
|
}
|
|
else if (!stricmp(lumpname, "BLOCKMAP"))
|
|
{
|
|
// there is no real point in creating a blockmap but let's use it anyway
|
|
index = ML_BLOCKMAP;
|
|
}
|
|
else if (!stricmp(lumpname, "REJECT"))
|
|
{
|
|
index = ML_REJECT;
|
|
}
|
|
else if (!stricmp(lumpname, "DIALOGUE"))
|
|
{
|
|
index = ML_CONVERSATION;
|
|
}
|
|
else if (!stricmp(lumpname, "BEHAVIOR"))
|
|
{
|
|
index = ML_BEHAVIOR;
|
|
map->HasBehavior = true;
|
|
}
|
|
else if (!stricmp(lumpname, "LIGHTMAP"))
|
|
{
|
|
index = ML_LIGHTMAP;
|
|
}
|
|
else if (!stricmp(lumpname, "ENDMAP"))
|
|
{
|
|
break;
|
|
}
|
|
else continue;
|
|
map->MapLumps[index].Reader = fileSystem.ReopenFileReader(lump_name + i);
|
|
strncpy(map->MapLumps[index].Name, lumpname, 8);
|
|
}
|
|
}
|
|
return map;
|
|
}
|
|
else
|
|
{
|
|
if (lump_map > lump_wad)
|
|
{
|
|
lump_wad = lump_map;
|
|
}
|
|
if (lump_wad == -1)
|
|
{
|
|
delete map;
|
|
return NULL;
|
|
}
|
|
map->lumpnum = lump_wad;
|
|
auto reader = fileSystem.ReopenFileReader(lump_wad);
|
|
map->resource = FResourceFile::OpenResourceFile(fileSystem.GetFileFullName(lump_wad), reader, true);
|
|
wadReader = map->resource->GetReader();
|
|
}
|
|
}
|
|
uint32_t id;
|
|
|
|
// Although we're using the resource system, we still want to be sure we're
|
|
// reading from a wad file.
|
|
wadReader->Seek(0, FileReader::SeekSet);
|
|
wadReader->Read(&id, sizeof(id));
|
|
|
|
if (id == IWAD_ID || id == PWAD_ID)
|
|
{
|
|
char maplabel[9]="";
|
|
int index=0;
|
|
|
|
map->MapLumps[0].Reader = map->resource->GetLump(0)->NewReader();
|
|
uppercopy(map->MapLumps[0].Name, map->resource->GetLump(0)->getName());
|
|
|
|
for(uint32_t i = 1; i < map->resource->LumpCount(); i++)
|
|
{
|
|
const char* lumpname = map->resource->GetLump(i)->getName();
|
|
|
|
if (i == 1 && !strnicmp(lumpname, "TEXTMAP", 8))
|
|
{
|
|
map->isText = true;
|
|
map->MapLumps[ML_TEXTMAP].Reader = map->resource->GetLump(i)->NewReader();
|
|
strncpy(map->MapLumps[ML_TEXTMAP].Name, lumpname, 8);
|
|
for(int i = 2;; i++)
|
|
{
|
|
lumpname = map->resource->GetLump(i)->getName();
|
|
if (!strnicmp(lumpname, "ZNODES",8))
|
|
{
|
|
index = ML_GLZNODES;
|
|
}
|
|
else if (!strnicmp(lumpname, "BLOCKMAP",8))
|
|
{
|
|
// there is no real point in creating a blockmap but let's use it anyway
|
|
index = ML_BLOCKMAP;
|
|
}
|
|
else if (!strnicmp(lumpname, "REJECT",8))
|
|
{
|
|
index = ML_REJECT;
|
|
}
|
|
else if (!strnicmp(lumpname, "DIALOGUE",8))
|
|
{
|
|
index = ML_CONVERSATION;
|
|
}
|
|
else if (!strnicmp(lumpname, "BEHAVIOR",8))
|
|
{
|
|
index = ML_BEHAVIOR;
|
|
map->HasBehavior = true;
|
|
}
|
|
else if (!strnicmp(lumpname, "LIGHTMAP", 8))
|
|
{
|
|
index = ML_LIGHTMAP;
|
|
}
|
|
else if (!strnicmp(lumpname, "ENDMAP",8))
|
|
{
|
|
return map;
|
|
}
|
|
else continue;
|
|
map->MapLumps[index].Reader = map->resource->GetLump(i)->NewReader();
|
|
strncpy(map->MapLumps[index].Name, lumpname, 8);
|
|
}
|
|
}
|
|
|
|
if (i>0)
|
|
{
|
|
try
|
|
{
|
|
index = GetMapIndex(maplabel, index, lumpname, !justcheck);
|
|
}
|
|
catch(...)
|
|
{
|
|
delete map;
|
|
throw;
|
|
}
|
|
if (index == -2)
|
|
{
|
|
delete map;
|
|
return NULL;
|
|
}
|
|
if (index == ML_BEHAVIOR) map->HasBehavior = true;
|
|
|
|
// The next lump is not part of this map anymore
|
|
if (index < 0) break;
|
|
}
|
|
else
|
|
{
|
|
strncpy(maplabel, lumpname, 8);
|
|
maplabel[8]=0;
|
|
}
|
|
|
|
map->MapLumps[index].Reader = map->resource->GetLump(i)->NewReader();
|
|
strncpy(map->MapLumps[index].Name, lumpname, 8);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// This is a Build map and not subject to WAD consistency checks.
|
|
//map->MapLumps[0].Size = wadReader->GetLength();
|
|
if (!P_IsBuildMap(map))
|
|
{
|
|
delete map;
|
|
return NULL;
|
|
}
|
|
}
|
|
return map;
|
|
}
|
|
|
|
bool P_CheckMapData(const char *mapname)
|
|
{
|
|
MapData *mapd = P_OpenMapData(mapname, true);
|
|
if (mapd == NULL) return false;
|
|
delete mapd;
|
|
return true;
|
|
}
|
|
|
|
//===========================================================================
|
|
//
|
|
// MapData :: GetChecksum
|
|
//
|
|
// Hashes a map based on its header, THINGS, LINEDEFS, SIDEDEFS, SECTORS,
|
|
// and BEHAVIOR lumps. Node-builder generated lumps are not included.
|
|
//
|
|
//===========================================================================
|
|
|
|
void MapData::GetChecksum(uint8_t cksum[16])
|
|
{
|
|
MD5Context md5;
|
|
|
|
if (isText)
|
|
{
|
|
md5Update(Reader(ML_TEXTMAP), md5, Size(ML_TEXTMAP));
|
|
}
|
|
else
|
|
{
|
|
md5Update(Reader(ML_LABEL), md5, Size(ML_LABEL));
|
|
md5Update(Reader(ML_THINGS), md5, Size(ML_THINGS));
|
|
md5Update(Reader(ML_LINEDEFS), md5, Size(ML_LINEDEFS));
|
|
md5Update(Reader(ML_SIDEDEFS), md5, Size(ML_SIDEDEFS));
|
|
md5Update(Reader(ML_SECTORS), md5, Size(ML_SECTORS));
|
|
}
|
|
if (HasBehavior)
|
|
{
|
|
md5Update(Reader(ML_BEHAVIOR), md5, Size(ML_BEHAVIOR));
|
|
}
|
|
md5.Final(cksum);
|
|
}
|