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a0828ddd06
Delete all bogus bsp limits, fixing the code that depended on them. Document those limits that are dictated by the format.
309 lines
8.3 KiB
C
309 lines
8.3 KiB
C
/*
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bspfile.h
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BSP (Binary Space Partitioning) file definitions
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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$Id$
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*/
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#ifndef __bspfile_h_
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#define __bspfile_h_
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#include "QF/qtypes.h"
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#include "QF/quakeio.h"
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// upper design bounds
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#define MAX_MAP_HULLS 4 // format limit (array)
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#define MAX_MAP_PLANES 32767 // format limit (s16) FIXME u16 ok?
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#define MAX_MAP_NODES 65520 // because negative shorts are contents
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#define MAX_MAP_CLIPNODES 65520 // but contents "max" is -15, so
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#define MAX_MAP_LEAFS 65520 // -32768 to -17 are available
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#define MAX_MAP_VERTS 65535 // format limit (u16)
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#define MAX_MAP_FACES 65535 // format limit (u16)
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#define MAX_MAP_MARKSURFACES 65535 // format limit (u16)
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//=============================================================================
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#define BSPVERSION 29
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#define Q2BSPVERSION 38
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#define TOOLVERSION 2
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typedef struct lump_s {
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int32_t fileofs;
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int32_t filelen;
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} lump_t;
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#define LUMP_ENTITIES 0
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#define LUMP_PLANES 1
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#define LUMP_TEXTURES 2
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#define LUMP_VERTEXES 3
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#define LUMP_VISIBILITY 4
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#define LUMP_NODES 5
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#define LUMP_TEXINFO 6
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#define LUMP_FACES 7
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#define LUMP_LIGHTING 8
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#define LUMP_CLIPNODES 9
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#define LUMP_LEAFS 10
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#define LUMP_MARKSURFACES 11
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#define LUMP_EDGES 12
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#define LUMP_SURFEDGES 13
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#define LUMP_MODELS 14
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#define HEADER_LUMPS 15
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typedef struct dmodel_s {
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float mins[3], maxs[3];
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float origin[3];
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int32_t headnode[MAX_MAP_HULLS];
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int32_t visleafs; // not including the solid leaf 0
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int32_t firstface, numfaces;
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} dmodel_t;
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typedef struct dheader_s {
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int32_t version;
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lump_t lumps[HEADER_LUMPS];
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} dheader_t;
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typedef struct dmiptexlump_s {
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int32_t nummiptex;
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int32_t dataofs[4]; // [nummiptex]
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} dmiptexlump_t;
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#define MIPTEXNAME 16
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#define MIPLEVELS 4
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typedef struct miptex_s {
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char name[MIPTEXNAME];
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uint32_t width, height;
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uint32_t offsets[MIPLEVELS]; // four mip maps stored
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} miptex_t;
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typedef struct dvertex_s {
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float point[3];
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} dvertex_t;
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// 0-2 are axial planes
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#define PLANE_X 0
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#define PLANE_Y 1
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#define PLANE_Z 2
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// 3-5 are non-axial planes snapped to the nearest
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#define PLANE_ANYX 3
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#define PLANE_ANYY 4
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#define PLANE_ANYZ 5
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typedef struct dplane_s {
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float normal[3];
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float dist;
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int32_t type; // PLANE_X - PLANE_ANYZ
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} dplane_t;
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#define CONTENTS_EMPTY -1
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#define CONTENTS_SOLID -2
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#define CONTENTS_WATER -3
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#define CONTENTS_SLIME -4
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#define CONTENTS_LAVA -5
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#define CONTENTS_SKY -6
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#define CONTENTS_ORIGIN -7 // removed at csg time
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#define CONTENTS_CLIP -8 // changed to contents_solid
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#define CONTENTS_CURRENT_0 -9
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#define CONTENTS_CURRENT_90 -10
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#define CONTENTS_CURRENT_180 -11
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#define CONTENTS_CURRENT_270 -12
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#define CONTENTS_CURRENT_UP -13
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#define CONTENTS_CURRENT_DOWN -14
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typedef struct dnode_s {
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int32_t planenum;
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int16_t children[2]; // negative numbers are -(leafs+1), not nodes
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int16_t mins[3]; // for sphere culling
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int16_t maxs[3];
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uint16_t firstface;
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uint16_t numfaces; // counting both sides
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} dnode_t;
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typedef struct dclipnode_s {
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int32_t planenum;
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int16_t children[2]; // negative numbers are contents
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} dclipnode_t;
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typedef struct texinfo_s {
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float vecs[2][4]; // [s/t][xyz offset]
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int32_t miptex;
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int32_t flags;
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} texinfo_t;
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#define TEX_SPECIAL 1 // sky or slime, no lightmap or 256 subdivision
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#define TEX_MISSING 2 // this texinfo does not have a texture
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// note that edge 0 is never used, because negative edge nums are used for
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// counterclockwise use of the edge in a face
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typedef struct dedge_s {
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uint16_t v[2]; // vertex numbers
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} dedge_t;
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#define MAXLIGHTMAPS 4
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typedef struct dface_s {
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int16_t planenum;
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int16_t side;
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int32_t firstedge; // we must support > 64k edges
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int16_t numedges;
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int16_t texinfo;
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// lighting info
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byte styles[MAXLIGHTMAPS];
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int32_t lightofs; // start of [numstyles*surfsize] samples
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} dface_t;
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#define AMBIENT_WATER 0
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#define AMBIENT_SKY 1
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#define AMBIENT_SLIME 2
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#define AMBIENT_LAVA 3
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#define NUM_AMBIENTS 4 // automatic ambient sounds
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// leaf 0 is the generic CONTENTS_SOLID leaf, used for all solid areas
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// all other leafs need visibility info
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typedef struct dleaf_s {
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int32_t contents;
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int32_t visofs; // -1 = no visibility info
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int16_t mins[3]; // for frustum culling
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int16_t maxs[3];
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uint16_t firstmarksurface;
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uint16_t nummarksurfaces;
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byte ambient_level[NUM_AMBIENTS];
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} dleaf_t;
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//============================================================================
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typedef struct bsp_s {
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int own_header;
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dheader_t *header;
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int own_models;
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int nummodels;
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dmodel_t *models;
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int own_visdata;
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size_t visdatasize;
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byte *visdata;
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int own_lightdata;
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size_t lightdatasize;
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byte *lightdata;
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int own_texdata;
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size_t texdatasize;
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byte *texdata; // (dmiptexlump_t)
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int own_entdata;
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size_t entdatasize;
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char *entdata;
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int own_leafs;
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int numleafs;
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dleaf_t *leafs;
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int own_planes;
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int numplanes;
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dplane_t *planes;
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int own_vertexes;
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int numvertexes;
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dvertex_t *vertexes;
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int own_nodes;
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int numnodes;
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dnode_t *nodes;
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int own_texinfo;
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int numtexinfo;
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texinfo_t *texinfo;
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int own_faces;
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int numfaces;
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dface_t *faces;
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int own_clipnodes;
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int numclipnodes;
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dclipnode_t *clipnodes;
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int own_edges;
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int numedges;
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dedge_t *edges;
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int own_marksurfaces;
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int nummarksurfaces;
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uint16_t *marksurfaces;
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int own_surfedges;
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int numsurfedges;
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int32_t *surfedges;
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} bsp_t;
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/** Create a bsp structure from a memory buffer.
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The returned structure will be setup to point into the supplied buffer.
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All structures within the bsp will be byte-swapped. For this reason, if
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a callback is provided, the callback be called after byteswapping the
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header, but before byteswapping any data in the lumps.
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\param mem The buffer holding the bsp data.
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\param size The size of the buffer. This is used for sanity checking.
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\param cb Pointer to the callback function.
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\param cbdata Pointer to extra data for the callback.
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\return Initialized bsp structure.
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\note The caller maintains ownership of the memory buffer. BSP_Free will
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free only the bsp structure itself. However, if the caller wishes to
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relinquish ownership of the buffer, set bsp_t::own_header to true.
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*/
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bsp_t *LoadBSPMem (void *mem, size_t size, void (*cb) (const bsp_t *, void *),
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void *cbdata);
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bsp_t *LoadBSPFile (QFile *file, size_t size);
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void WriteBSPFile (const bsp_t *bsp, QFile *file);
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bsp_t *BSP_New (void);
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void BSP_Free (bsp_t *bsp);
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void BSP_AddPlane (bsp_t *bsp, const dplane_t *plane);
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void BSP_AddLeaf (bsp_t *bsp, const dleaf_t *leaf);
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void BSP_AddVertex (bsp_t *bsp, const dvertex_t *vertex);
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void BSP_AddNode (bsp_t *bsp, const dnode_t *node);
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void BSP_AddTexinfo (bsp_t *bsp, const texinfo_t *texinfo);
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void BSP_AddFace (bsp_t *bsp, const dface_t *face);
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void BSP_AddClipnode (bsp_t *bsp, const dclipnode_t *clipnode);
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void BSP_AddMarkSurface (bsp_t *bsp, int marksurface);
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void BSP_AddSurfEdge (bsp_t *bsp, int surfedge);
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void BSP_AddEdge (bsp_t *bsp, const dedge_t *edge);
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void BSP_AddModel (bsp_t *bsp, const dmodel_t *model);
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void BSP_AddLighting (bsp_t *bsp, const byte *lightdata, size_t lightdatasize);
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void BSP_AddVisibility (bsp_t *bsp, const byte *visdata, size_t visdatasize);
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void BSP_AddEntities (bsp_t *bsp, const char *entdata, size_t entdatasize);
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void BSP_AddTextures (bsp_t *bsp, const byte *texdata, size_t texdatasize);
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#endif//__bspfile_h_
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