633 lines
16 KiB
C
633 lines
16 KiB
C
//=======================================================================
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// Copyright XashXT Group 2007 ©
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// bspfile.c - read\save bsp file
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//=======================================================================
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#include <stdio.h> // sscanf support
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#include "bsplib.h"
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#include "byteorder.h"
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#include "const.h"
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//=============================================================================
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wfile_t *handle;
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file_t *wadfile;
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dheader_t *header;
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int num_entities;
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bsp_entity_t entities[MAX_MAP_ENTITIES];
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int nummodels;
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dmodel_t dmodels[MAX_MAP_MODELS];
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int visdatasize;
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byte dvisdata[MAX_MAP_VISIBILITY];
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dvis_t *dvis = (dvis_t *)dvisdata;
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int lightdatasize;
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byte dlightdata[MAX_MAP_LIGHTING];
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int entdatasize;
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char dentdata[MAX_MAP_ENTSTRING];
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int numleafs;
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dleaf_t dleafs[MAX_MAP_LEAFS];
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int numplanes;
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dplane_t dplanes[MAX_MAP_PLANES];
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int numvertexes;
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dvertex_t dvertexes[MAX_MAP_VERTS];
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int numnodes;
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dnode_t dnodes[MAX_MAP_NODES];
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int numtexinfo;
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dtexinfo_t texinfo[MAX_MAP_TEXINFO];
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int numsurfaces;
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dsurface_t dsurfaces[MAX_MAP_SURFACES];
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int numedges;
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dedge_t dedges[MAX_MAP_EDGES];
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int numleafsurfaces;
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dleafface_t dleafsurfaces[MAX_MAP_LEAFFACES];
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int numleafbrushes;
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dleafbrush_t dleafbrushes[MAX_MAP_LEAFBRUSHES];
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int numsurfedges;
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dsurfedge_t dsurfedges[MAX_MAP_SURFEDGES];
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int numbrushes;
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dbrush_t dbrushes[MAX_MAP_BRUSHES];
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int numbrushsides;
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dbrushside_t dbrushsides[MAX_MAP_BRUSHSIDES];
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int numshaders;
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dshader_t dshaders[MAX_MAP_SHADERS];
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int numareas;
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darea_t dareas[MAX_MAP_AREAS];
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int numareaportals;
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dareaportal_t dareaportals[MAX_MAP_AREAPORTALS];
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byte dcollision[MAX_MAP_COLLISION];
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int dcollisiondatasize;
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/*
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===============
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CompressVis
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===============
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*/
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int CompressVis( byte *vis, byte *dest )
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{
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int j;
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int rep;
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int visrow;
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byte *dest_p;
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dest_p = dest;
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visrow = (dvis->numclusters + 7)>>3;
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for (j=0 ; j<visrow ; j++)
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{
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*dest_p++ = vis[j];
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if (vis[j])
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continue;
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rep = 1;
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for ( j++; j<visrow ; j++)
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if (vis[j] || rep == 255)
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break;
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else rep++;
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*dest_p++ = rep;
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j--;
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}
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return dest_p - dest;
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}
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/*
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===================
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DecompressVis
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===================
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*/
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void DecompressVis( byte *in, byte *decompressed )
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{
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int c;
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byte *out;
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int row;
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row = (dvis->numclusters+7)>>3;
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out = decompressed;
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do
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{
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if (*in)
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{
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*out++ = *in++;
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continue;
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}
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c = in[1];
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if (!c) Sys_Error("DecompressVis: 0 repeat");
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in += 2;
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while (c)
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{
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*out++ = 0;
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c--;
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}
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} while (out - decompressed < row);
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}
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//=============================================================================
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/*
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=============
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SwapBSPFile
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Byte swaps all data in a bsp file.
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=============
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*/
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void SwapBSPFile( bool todisk )
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{
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int i, j;
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// models
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SwapBlock((int *)dmodels, nummodels * sizeof( dmodels[0] ));
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// vertexes
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SwapBlock( (int *)dvertexes, numvertexes * sizeof( dvertexes[0] ));
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// planes
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SwapBlock( (int *)dplanes, numplanes * sizeof( dplanes[0] ));
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// texinfos
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SwapBlock( (int *)texinfo, numtexinfo * sizeof( texinfo[0] ));
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// nodes
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SwapBlock( (int *)dnodes, numnodes * sizeof( dnodes[0] ));
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// leafs
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SwapBlock( (int *)dleafs, numleafs * sizeof( dleafs[0] ));
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// leaffaces
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SwapBlock( (int *)dleafsurfaces, numleafsurfaces * sizeof( dleafsurfaces[0] ));
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// leafbrushes
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SwapBlock( (int *)dleafbrushes, numleafbrushes * sizeof( dleafbrushes[0] ));
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// surfedges
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SwapBlock( (int *)dsurfedges, numsurfedges * sizeof( dsurfedges[0] ));
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// edges
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SwapBlock( (int *)dedges, numedges * sizeof( dedges[0] ));
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// brushes
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SwapBlock( (int *)dbrushes, numbrushes * sizeof( dbrushes[0] ));
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// areas
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SwapBlock( (int *)dareas, numareas * sizeof( dareas[0] ));
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// areasportals
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SwapBlock( (int *)dareaportals, numareaportals * sizeof( dareaportals[0] ));
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// brushsides
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SwapBlock( (int *)dbrushsides, numbrushsides * sizeof( dbrushsides[0] ));
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// shaders
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for( i = 0; i < numshaders; i++ )
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{
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dshaders[i].size[0] = LittleLong( dshaders[i].size[0] );
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dshaders[i].size[1] = LittleLong( dshaders[i].size[1] );
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dshaders[i].surfaceFlags = LittleLong( dshaders[i].surfaceFlags );
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dshaders[i].contentFlags = LittleLong( dshaders[i].contentFlags );
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}
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// faces
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for( i = 0; i < numsurfaces; i++ )
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{
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dsurfaces[i].planenum = LittleLong( dsurfaces[i].planenum );
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dsurfaces[i].side = LittleLong (dsurfaces[i].side);
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dsurfaces[i].firstedge = LittleLong( dsurfaces[i].firstedge );
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dsurfaces[i].numedges = LittleLong( dsurfaces[i].numedges );
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dsurfaces[i].texinfo = LittleLong( dsurfaces[i].texinfo );
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dsurfaces[i].lightofs = LittleLong( dsurfaces[i].lightofs );
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}
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// visibility
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if( todisk ) j = dvis->numclusters;
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else j = LittleLong( dvis->numclusters );
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dvis->numclusters = LittleLong( dvis->numclusters );
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for( i = 0; i < j; i++ )
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{
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dvis->bitofs[i][0] = LittleLong( dvis->bitofs[i][0] );
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dvis->bitofs[i][1] = LittleLong( dvis->bitofs[i][1] );
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}
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}
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#ifdef BSP_WADFILE
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size_t CopyLump( const char *lumpname, void *dest, size_t block_size )
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{
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size_t length;
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byte *in;
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if( !handle ) return 0;
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in = WAD_Read( handle, lumpname, &length, TYPE_BINDATA );
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if( length % block_size ) Sys_Break( "LoadBSPFile: %s funny lump size\n", lumpname );
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Mem_Copy( dest, in, length );
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Mem_Free( in ); // no need more
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return length / block_size;
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}
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void AddLump( const char *lumpname, const void *data, size_t length )
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{
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int compress = CMP_NONE;
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if( !handle ) return;
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if( length > 0xffff ) compress = CMP_ZLIB; // save hdd space
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WAD_Write( handle, lumpname, data, length, TYPE_BINDATA, compress );
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}
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#else
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size_t CopyLump( const int lumpname, void *dest, size_t block_size )
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{
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size_t length, ofs;
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length = header->lumps[lumpname].filelen;
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ofs = header->lumps[lumpname].fileofs;
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if( length % block_size) Sys_Break( "LoadBSPFile: %i funny lump size\n", lumpname );
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Mem_Copy(dest, (byte *)header + ofs, length);
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return length / block_size;
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}
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void AddLump( const int lumpname, const void *data, size_t length )
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{
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lump_t *lump;
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lump = &header->lumps[lumpname];
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lump->fileofs = LittleLong( FS_Tell( wadfile ));
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lump->filelen = LittleLong( length );
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FS_Write( wadfile, data, (length + 3) & ~3 );
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}
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#endif
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/*
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=============
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LoadBSPFile
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=============
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*/
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bool LoadBSPFile( void )
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{
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byte *buffer;
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buffer = (byte *)FS_LoadFile( va("maps/%s.bsp", gs_filename ), NULL );
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if( !buffer ) return false;
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header = (dheader_t *)buffer; // load the file header
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if( pe ) pe->LoadBSP( buffer );
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MsgDev( D_NOTE, "reading %s.bsp\n", gs_filename );
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// swap the header
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SwapBlock( (int *)header, sizeof( header ));
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if( header->ident != IDBSPMODHEADER )
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Sys_Break( "%s.bsp is not a IBSP file\n", gs_filename );
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if( header->version != BSPMOD_VERSION )
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Sys_Break( "%s.bsp is version %i, not %i\n", gs_filename, header->version, BSPMOD_VERSION );
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entdatasize = CopyLump( LUMP_ENTITIES, dentdata, 1 );
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numplanes = CopyLump( LUMP_PLANES, dplanes, sizeof( dplanes[0] ));
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numvertexes = CopyLump( LUMP_VERTEXES, dvertexes, sizeof( dvertexes[0] ));
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visdatasize = CopyLump( LUMP_VISIBILITY, dvisdata, 1 );
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numnodes = CopyLump( LUMP_NODES, dnodes, sizeof( dnodes[0] ));
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numtexinfo = CopyLump( LUMP_TEXINFO, texinfo, sizeof( texinfo[0] ));
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numsurfaces = CopyLump( LUMP_SURFACES, dsurfaces, sizeof( dsurfaces[0] ));
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lightdatasize = CopyLump( LUMP_LIGHTING, dlightdata, 1 );
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numleafs = CopyLump( LUMP_LEAFS, dleafs, sizeof( dleafs[0] ));
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numleafsurfaces = CopyLump( LUMP_LEAFFACES, dleafsurfaces, sizeof( dleafsurfaces[0] ));
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numleafbrushes = CopyLump( LUMP_LEAFBRUSHES, dleafbrushes, sizeof( dleafbrushes[0] ));
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numedges = CopyLump( LUMP_EDGES, dedges, sizeof( dedges[0] ));
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numsurfedges = CopyLump( LUMP_SURFEDGES, dsurfedges, sizeof( dsurfedges[0] ));
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nummodels = CopyLump( LUMP_MODELS, dmodels, sizeof( dmodels[0] ));
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numbrushes = CopyLump( LUMP_BRUSHES, dbrushes, sizeof( dbrushes[0] ));
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numbrushsides = CopyLump( LUMP_BRUSHSIDES, dbrushsides, sizeof( dbrushsides[0] ));
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dcollisiondatasize = CopyLump( LUMP_COLLISION, dcollision, 1 );
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numshaders = CopyLump( LUMP_SHADERS, dshaders, sizeof( dshaders[0] ));
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numareas = CopyLump ( LUMP_AREAS, dareas, sizeof( dareas[0] ));
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numareaportals = CopyLump( LUMP_AREAPORTALS, dareaportals, sizeof( dareaportals[0] ));
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// swap everything
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SwapBSPFile( false );
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return true;
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}
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//============================================================================
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/*
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=============
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WriteBSPFile
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Swaps the bsp file in place, so it should not be referenced again
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=============
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*/
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void WriteBSPFile( void )
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{
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static dheader_t outheader;
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header = &outheader;
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Mem_Set( header, 0, sizeof( dheader_t ));
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SwapBSPFile( true );
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header->ident = LittleLong( IDBSPMODHEADER );
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header->version = LittleLong( BSPMOD_VERSION );
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MsgDev( D_NOTE, "\n\nwriting %s.bsp\n", gs_filename );
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if( pe ) pe->FreeBSP();
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wadfile = FS_Open( va( "maps/%s.bsp", gs_filename ), "wb" );
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FS_Write( wadfile, header, sizeof( dheader_t )); // overwritten later
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Msg("add collision lump %i\n", dcollisiondatasize );
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AddLump( LUMP_ENTITIES, dentdata, entdatasize );
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AddLump( LUMP_PLANES, dplanes, numplanes * sizeof( dplanes[0] ));
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AddLump( LUMP_VERTEXES, dvertexes, numvertexes * sizeof( dvertexes[0] ));
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AddLump( LUMP_VISIBILITY, dvisdata, visdatasize );
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AddLump( LUMP_NODES, dnodes, numnodes * sizeof( dnodes[0] ));
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AddLump( LUMP_TEXINFO, texinfo, numtexinfo * sizeof( texinfo[0] ));
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AddLump( LUMP_SURFACES, dsurfaces, numsurfaces * sizeof( dsurfaces[0] ));
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AddLump( LUMP_LIGHTING, dlightdata, lightdatasize );
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AddLump( LUMP_LEAFS, dleafs, numleafs * sizeof( dleafs[0] ));
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AddLump( LUMP_LEAFFACES, dleafsurfaces, numleafsurfaces * sizeof( dleafsurfaces[0] ));
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AddLump( LUMP_LEAFBRUSHES, dleafbrushes, numleafbrushes * sizeof( dleafbrushes[0] ));
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AddLump( LUMP_EDGES, dedges, numedges * sizeof( dedges[0] ));
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AddLump( LUMP_SURFEDGES, dsurfedges, numsurfedges * sizeof( dsurfedges[0] ));
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AddLump( LUMP_MODELS, dmodels, nummodels * sizeof( dmodels[0] ));
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AddLump( LUMP_BRUSHES, dbrushes, numbrushes * sizeof( dbrushes[0] ));
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AddLump( LUMP_BRUSHSIDES, dbrushsides, numbrushsides * sizeof( dbrushsides[0] ));
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AddLump( LUMP_COLLISION, dcollision, dcollisiondatasize );
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AddLump( LUMP_SHADERS, dshaders, numshaders * sizeof( dshaders[0] ));
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AddLump( LUMP_AREAS, dareas, numareas * sizeof( dareas[0] ));
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AddLump( LUMP_AREAPORTALS, dareaportals, numareaportals * sizeof( dareaportals[0] ));
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// merge header
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FS_Seek( wadfile, 0, SEEK_SET );
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FS_Write( wadfile, header, sizeof( dheader_t ));
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FS_Close( wadfile );
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}
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//============================================
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// misc parse functions
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//============================================
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void StripTrailing( char *e )
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{
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char *s;
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s = e + com.strlen( e ) - 1;
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while( s >= e && *s <= 32 )
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{
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*s = 0;
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s--;
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}
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}
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/*
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=================
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ParseEpair
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=================
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*/
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epair_t *ParseEpair( token_t *token )
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{
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epair_t *e;
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e = Malloc( sizeof( epair_t ));
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if( com.strlen( token->string ) >= MAX_KEY - 1 )
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Sys_Break( "ParseEpair: token too long\n" );
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e->key = copystring( token->string );
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Com_ReadToken( mapfile, SC_PARSE_GENERIC, token );
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if( com.strlen( token->string ) >= MAX_VALUE - 1 )
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Sys_Break( "ParseEpair: token too long\n" );
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e->value = copystring( token->string );
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// strip trailing spaces
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StripTrailing( e->key );
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StripTrailing( e->value );
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return e;
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}
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/*
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================
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ParseEntity
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================
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*/
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bool ParseEntity( void )
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{
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epair_t *e;
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token_t token;
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bsp_entity_t *mapent;
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if( !Com_ReadToken( mapfile, SC_ALLOW_NEWLINES, &token ))
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return false;
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if( com.stricmp( token.string, "{" )) Sys_Break( "ParseEntity: '{' not found\n" );
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if( num_entities == MAX_MAP_ENTITIES ) Sys_Break( "MAX_MAP_ENTITIES limit excceded\n" );
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mapent = &entities[num_entities];
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num_entities++;
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while( 1 )
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{
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if( !Com_ReadToken( mapfile, SC_ALLOW_NEWLINES|SC_PARSE_GENERIC, &token ))
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Sys_Break( "ParseEntity: EOF without closing brace\n" );
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if( !com.stricmp( token.string, "}" )) break;
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e = ParseEpair( &token );
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e->next = mapent->epairs;
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mapent->epairs = e;
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}
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return true;
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}
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/*
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================
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ParseEntities
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Parses the dentdata string into entities
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================
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*/
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void ParseEntities( void )
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{
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num_entities = 0;
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mapfile = Com_OpenScript( "entities", dentdata, entdatasize );
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if( mapfile ) while( ParseEntity( ));
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Com_CloseScript( mapfile );
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}
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/*
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================
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UnparseEntities
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Generates the dentdata string from all the entities
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================
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*/
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void UnparseEntities( void )
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{
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epair_t *ep;
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char *buf, *end;
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char line[2048];
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char key[MAX_KEY], value[MAX_VALUE];
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const char *value2;
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int i;
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buf = dentdata;
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end = buf;
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*end = 0;
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for( i = 0; i < num_entities; i++ )
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{
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ep = entities[i].epairs;
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if( !ep ) continue; // ent got removed
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// certain entities get stripped from bsp file */
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value2 = ValueForKey( &entities[i], "classname" );
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if(!com.stricmp( value2, "_decal" ) || !com.stricmp( value2, "_skybox" ))
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continue;
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com.strcat( end, "{\n" );
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end += 2;
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for( ep = entities[i].epairs; ep; ep = ep->next )
|
|
{
|
|
com.strncpy( key, ep->key, MAX_KEY );
|
|
StripTrailing( key );
|
|
com.strncpy( value, ep->value, MAX_VALUE );
|
|
StripTrailing( value );
|
|
|
|
com.snprintf( line, 2048, "\"%s\" \"%s\"\n", key, value );
|
|
com.strcat( end, line );
|
|
end += com.strlen( line );
|
|
}
|
|
com.strcat( end, "}\n" );
|
|
end += 2;
|
|
|
|
if( end > buf + MAX_MAP_ENTSTRING )
|
|
Sys_Break( "Entity text too long\n" );
|
|
}
|
|
entdatasize = end - buf + 1;
|
|
}
|
|
|
|
void SetKeyValue( bsp_entity_t *ent, const char *key, const char *value )
|
|
{
|
|
epair_t *ep;
|
|
|
|
for( ep = ent->epairs; ep; ep = ep->next )
|
|
{
|
|
if(!com.strcmp( ep->key, key ))
|
|
{
|
|
Mem_Free( ep->value );
|
|
ep->value = copystring( value );
|
|
return;
|
|
}
|
|
}
|
|
ep = Malloc( sizeof( *ep ));
|
|
ep->next = ent->epairs;
|
|
ent->epairs = ep;
|
|
ep->key = copystring( key );
|
|
ep->value = copystring( value );
|
|
}
|
|
|
|
char *ValueForKey( const bsp_entity_t *ent, const char *key )
|
|
{
|
|
epair_t *ep;
|
|
|
|
if( !ent ) return "";
|
|
|
|
for( ep = ent->epairs; ep; ep = ep->next )
|
|
{
|
|
if(!com.strcmp( ep->key, key ))
|
|
return ep->value;
|
|
}
|
|
return "";
|
|
}
|
|
|
|
long IntForKey( const bsp_entity_t *ent, const char *key )
|
|
{
|
|
char *k;
|
|
|
|
k = ValueForKey( ent, key );
|
|
return com.atoi( k );
|
|
}
|
|
|
|
vec_t FloatForKey( const bsp_entity_t *ent, const char *key )
|
|
{
|
|
char *k;
|
|
|
|
k = ValueForKey( ent, key );
|
|
return com.atof( k );
|
|
}
|
|
|
|
void GetVectorForKey( const bsp_entity_t *ent, const char *key, vec3_t vec )
|
|
{
|
|
char *k;
|
|
double v1, v2, v3;
|
|
|
|
k = ValueForKey( ent, key );
|
|
|
|
// scanf into doubles, then assign, so it is vec_t size independent
|
|
v1 = v2 = v3 = 0;
|
|
sscanf( k, "%lf %lf %lf", &v1, &v2, &v3 );
|
|
VectorSet( vec, v1, v2, v3 );
|
|
}
|
|
|
|
/*
|
|
================
|
|
FindTargetEntity
|
|
|
|
finds an entity target
|
|
================
|
|
*/
|
|
bsp_entity_t *FindTargetEntity( const char *target )
|
|
{
|
|
int i;
|
|
const char *n;
|
|
|
|
|
|
// walk entity list
|
|
for( i = 0; i < num_entities; i++ )
|
|
{
|
|
n = ValueForKey( &entities[i], "targetname" );
|
|
if( !com.strcmp( n, target ))
|
|
return &entities[i];
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
void Com_CheckToken( script_t *script, const char *match )
|
|
{
|
|
token_t token;
|
|
|
|
Com_ReadToken( script, SC_ALLOW_NEWLINES, &token );
|
|
|
|
if( com.stricmp( token.string, match ))
|
|
{
|
|
Sys_Break( "Com_CheckToken: \"%s\" not found\n", match );
|
|
}
|
|
}
|
|
|
|
void Com_Parse1DMatrix( script_t *script, int x, vec_t *m )
|
|
{
|
|
int i;
|
|
|
|
Com_CheckToken( script, "(" );
|
|
for( i = 0; i < x; i++ )
|
|
Com_ReadFloat( script, false, &m[i] );
|
|
Com_CheckToken( script, ")" );
|
|
}
|
|
|
|
void Com_Parse2DMatrix( script_t *script, int y, int x, vec_t *m )
|
|
{
|
|
int i;
|
|
|
|
Com_CheckToken( script, "(" );
|
|
for( i = 0; i < y; i++ )
|
|
Com_Parse1DMatrix( script, x, m+i*x );
|
|
Com_CheckToken( script, ")" );
|
|
} |