//===========================================================================
// allocate memory and read a lump of a AAS file
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
char *AAS_LoadAASLump( FILE *fp, int offset, int length, void *buf ) {
if ( !length ) {
printf( "lump size 0\n" );
return buf;
} //end if
//seek to the data
if ( fseek( fp, offset, SEEK_SET ) ) {
AAS_Error( "can't seek to lump\n" );
AAS_DumpAASData();
fclose( fp );
return 0;
} //end if
//allocate memory
if ( !buf ) {
buf = (void *) GetClearedMemory( length );
}
//read the data
if ( fread( (char *) buf, 1, length, fp ) != length ) {
AAS_Error( "can't read lump\n" );
FreeMemory( buf );
AAS_DumpAASData();
fclose( fp );
return NULL;
} //end if
return buf;
} //end of the function AAS_LoadAASLump
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
void AAS_Shutdown(void)
{
// Ridah, do each of the worlds
int i;
for(i = 0; i < MAX_AAS_WORLDS; i++)
{
AAS_SetCurrentWorld(i);
// Ridah, kill the route-table data
AAS_RT_ShutdownRouteTable();
AAS_ShutdownAlternativeRouting();
AAS_DumpBSPData();
//free routing caches
AAS_FreeRoutingCaches();
//free aas link heap
AAS_FreeAASLinkHeap();
//free aas linked entities
AAS_FreeAASLinkedEntities();
//free the aas data
AAS_DumpAASData();
if(i == 0)
{
//free the entities
if((*aasworld).entities)
{
FreeMemory((*aasworld).entities);
}
}
//clear the (*aasworld) structure
memset(&(*aasworld), 0, sizeof(aas_t));
//aas has not been initialized
(*aasworld).initialized = qfalse;
}
//NOTE: as soon as a new .bsp file is loaded the .bsp file memory is
// freed an reallocated, so there's no need to free that memory here
//print shutdown
botimport.Print(PRT_MESSAGE, "AAS shutdown.\n");
} //end of the function AAS_Shutdown
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
void AAS_Shutdown(void)
{
AAS_ShutdownAlternativeRouting();
//
AAS_DumpBSPData();
//free routing caches
AAS_FreeRoutingCaches();
//free aas link heap
AAS_FreeAASLinkHeap();
//free aas linked entities
AAS_FreeAASLinkedEntities();
//free the aas data
AAS_DumpAASData();
//free the entities
if (aasworld.entities) FreeMemory(aasworld.entities);
//clear the aasworld structure
Com_Memset(&aasworld, 0, sizeof(aas_t));
//aas has not been initialized
aasworld.initialized = qfalse;
//NOTE: as soon as a new .bsp file is loaded the .bsp file memory is
// freed an reallocated, so there's no need to free that memory here
//print shutdown
botimport.Print(PRT_MESSAGE, "AAS shutdown.\n");
} //end of the function AAS_Shutdown
//===========================================================================
// load an aas file
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
qboolean AAS_LoadAASFile( char *filename, int fpoffset, int fplength ) {
FILE *fp;
aas_header_t header;
int offset, length;
//dump current loaded aas file
AAS_DumpAASData();
//open the file
fp = fopen( filename, "rb" );
if ( !fp ) {
AAS_Error( "can't open %s\n", filename );
return false;
} //end if
//seek to the correct position (in the pak file)
if ( fseek( fp, fpoffset, SEEK_SET ) ) {
AAS_Error( "can't seek to file %s\n" );
fclose( fp );
return false;
} //end if
//read the header
if ( fread( &header, sizeof( aas_header_t ), 1, fp ) != 1 ) {
AAS_Error( "can't read header of file %s\n", filename );
fclose( fp );
return false;
} //end if
//check header identification
header.ident = LittleLong( header.ident );
if ( header.ident != AASID ) {
AAS_Error( "%s is not an AAS file\n", filename );
fclose( fp );
return false;
} //end if
//check the version
header.version = LittleLong( header.version );
if ( header.version != AASVERSION ) {
AAS_Error( "%s is version %i, not %i\n", filename, header.version, AASVERSION );
fclose( fp );
return false;
} //end if
//
if ( header.version == AASVERSION ) {
AAS_DData( (unsigned char *) &header + 8, sizeof( aas_header_t ) - 8 );
} //end if
( *aasworld ).bspchecksum = LittleLong( header.bspchecksum );
//load the lumps:
//bounding boxes
offset = fpoffset + LittleLong( header.lumps[AASLUMP_BBOXES].fileofs );
length = LittleLong( header.lumps[AASLUMP_BBOXES].filelen );
( *aasworld ).bboxes = (aas_bbox_t *) AAS_LoadAASLump( fp, offset, length, ( *aasworld ).bboxes );
if ( !( *aasworld ).bboxes ) {
return false;
}
( *aasworld ).numbboxes = length / sizeof( aas_bbox_t );
//vertexes
offset = fpoffset + LittleLong( header.lumps[AASLUMP_VERTEXES].fileofs );
length = LittleLong( header.lumps[AASLUMP_VERTEXES].filelen );
( *aasworld ).vertexes = (aas_vertex_t *) AAS_LoadAASLump( fp, offset, length, ( *aasworld ).vertexes );
if ( !( *aasworld ).vertexes ) {
return false;
}
( *aasworld ).numvertexes = length / sizeof( aas_vertex_t );
//planes
offset = fpoffset + LittleLong( header.lumps[AASLUMP_PLANES].fileofs );
length = LittleLong( header.lumps[AASLUMP_PLANES].filelen );
( *aasworld ).planes = (aas_plane_t *) AAS_LoadAASLump( fp, offset, length, ( *aasworld ).planes );
if ( !( *aasworld ).planes ) {
return false;
}
( *aasworld ).numplanes = length / sizeof( aas_plane_t );
//edges
offset = fpoffset + LittleLong( header.lumps[AASLUMP_EDGES].fileofs );
length = LittleLong( header.lumps[AASLUMP_EDGES].filelen );
( *aasworld ).edges = (aas_edge_t *) AAS_LoadAASLump( fp, offset, length, ( *aasworld ).edges );
if ( !( *aasworld ).edges ) {
return false;
}
( *aasworld ).numedges = length / sizeof( aas_edge_t );
//edgeindex
offset = fpoffset + LittleLong( header.lumps[AASLUMP_EDGEINDEX].fileofs );
length = LittleLong( header.lumps[AASLUMP_EDGEINDEX].filelen );
( *aasworld ).edgeindex = (aas_edgeindex_t *) AAS_LoadAASLump( fp, offset, length, ( *aasworld ).edgeindex );
if ( !( *aasworld ).edgeindex ) {
return false;
}
( *aasworld ).edgeindexsize = length / sizeof( aas_edgeindex_t );
//faces
offset = fpoffset + LittleLong( header.lumps[AASLUMP_FACES].fileofs );
length = LittleLong( header.lumps[AASLUMP_FACES].filelen );
( *aasworld ).faces = (aas_face_t *) AAS_LoadAASLump( fp, offset, length, ( *aasworld ).faces );
if ( !( *aasworld ).faces ) {
return false;
}
( *aasworld ).numfaces = length / sizeof( aas_face_t );
//faceindex
offset = fpoffset + LittleLong( header.lumps[AASLUMP_FACEINDEX].fileofs );
length = LittleLong( header.lumps[AASLUMP_FACEINDEX].filelen );
( *aasworld ).faceindex = (aas_faceindex_t *) AAS_LoadAASLump( fp, offset, length, ( *aasworld ).faceindex );
if ( !( *aasworld ).faceindex ) {
return false;
}
( *aasworld ).faceindexsize = length / sizeof( int );
//convex areas
offset = fpoffset + LittleLong( header.lumps[AASLUMP_AREAS].fileofs );
length = LittleLong( header.lumps[AASLUMP_AREAS].filelen );
( *aasworld ).areas = (aas_area_t *) AAS_LoadAASLump( fp, offset, length, ( *aasworld ).areas );
if ( !( *aasworld ).areas ) {
return false;
}
( *aasworld ).numareas = length / sizeof( aas_area_t );
//area settings
offset = fpoffset + LittleLong( header.lumps[AASLUMP_AREASETTINGS].fileofs );
length = LittleLong( header.lumps[AASLUMP_AREASETTINGS].filelen );
( *aasworld ).areasettings = (aas_areasettings_t *) AAS_LoadAASLump( fp, offset, length, ( *aasworld ).areasettings );
if ( !( *aasworld ).areasettings ) {
return false;
}
( *aasworld ).numareasettings = length / sizeof( aas_areasettings_t );
//reachability list
offset = fpoffset + LittleLong( header.lumps[AASLUMP_REACHABILITY].fileofs );
length = LittleLong( header.lumps[AASLUMP_REACHABILITY].filelen );
( *aasworld ).reachability = (aas_reachability_t *) AAS_LoadAASLump( fp, offset, length, ( *aasworld ).reachability );
if ( length && !( *aasworld ).reachability ) {
return false;
}
( *aasworld ).reachabilitysize = length / sizeof( aas_reachability_t );
//nodes
offset = fpoffset + LittleLong( header.lumps[AASLUMP_NODES].fileofs );
length = LittleLong( header.lumps[AASLUMP_NODES].filelen );
( *aasworld ).nodes = (aas_node_t *) AAS_LoadAASLump( fp, offset, length, ( *aasworld ).nodes );
if ( !( *aasworld ).nodes ) {
return false;
}
( *aasworld ).numnodes = length / sizeof( aas_node_t );
//cluster portals
offset = fpoffset + LittleLong( header.lumps[AASLUMP_PORTALS].fileofs );
length = LittleLong( header.lumps[AASLUMP_PORTALS].filelen );
( *aasworld ).portals = (aas_portal_t *) AAS_LoadAASLump( fp, offset, length, ( *aasworld ).portals );
if ( length && !( *aasworld ).portals ) {
return false;
}
( *aasworld ).numportals = length / sizeof( aas_portal_t );
//cluster portal index
offset = fpoffset + LittleLong( header.lumps[AASLUMP_PORTALINDEX].fileofs );
length = LittleLong( header.lumps[AASLUMP_PORTALINDEX].filelen );
( *aasworld ).portalindex = (aas_portalindex_t *) AAS_LoadAASLump( fp, offset, length, ( *aasworld ).portalindex );
if ( length && !( *aasworld ).portalindex ) {
return false;
}
( *aasworld ).portalindexsize = length / sizeof( aas_portalindex_t );
//clusters
offset = fpoffset + LittleLong( header.lumps[AASLUMP_CLUSTERS].fileofs );
length = LittleLong( header.lumps[AASLUMP_CLUSTERS].filelen );
( *aasworld ).clusters = (aas_cluster_t *) AAS_LoadAASLump( fp, offset, length, ( *aasworld ).clusters );
if ( length && !( *aasworld ).clusters ) {
return false;
}
( *aasworld ).numclusters = length / sizeof( aas_cluster_t );
//swap everything
AAS_SwapAASData();
//aas file is loaded
( *aasworld ).loaded = true;
//close the file
fclose( fp );
return true;
} //end of the function AAS_LoadAASFile