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/*

Copyright (C) 1996-1997 Id Software, Inc.

This program is free software; you can redistribute it and/or

modify it under the terms of the GNU General Public License

as published by the Free Software Foundation; either version 2

of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License

along with this program; if not, write to the Free Software

Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/

// upper design bounds

#define	MAX_MAP_HULLS		4

#define	MAX_MAP_MODELS		256

#define	MAX_MAP_BRUSHES		4096

#define	MAX_MAP_ENTITIES	1024

#define	MAX_MAP_ENTSTRING	65536

#define	MAX_MAP_PLANES		32767

#define	MAX_MAP_NODES		32767		// because negative shorts are contents

#define	MAX_MAP_CLIPNODES	32767		//

#define	MAX_MAP_LEAFS		8192

#define	MAX_MAP_VERTS		65535

#define	MAX_MAP_FACES		65535

#define	MAX_MAP_MARKSURFACES 65535

#define	MAX_MAP_TEXINFO		4096

#define	MAX_MAP_EDGES		256000

#define	MAX_MAP_SURFEDGES	512000

#define	MAX_MAP_TEXTURES	512

#define	MAX_MAP_MIPTEX		0x200000

#define	MAX_MAP_LIGHTING	0x100000

#define	MAX_MAP_VISIBILITY	0x100000

#define	MAX_MAP_PORTALS		65536

// key / value pair sizes

#define	MAX_KEY		32

#define	MAX_VALUE	1024

//=============================================================================

#define BSPVERSION	29

#define	TOOLVERSION	2

typedef struct

{

	int		fileofs, filelen;

} lump_t;

#define	LUMP_ENTITIES	0

#define	LUMP_PLANES		1

#define	LUMP_TEXTURES	2

#define	LUMP_VERTEXES	3

#define	LUMP_VISIBILITY	4

#define	LUMP_NODES		5

#define	LUMP_TEXINFO	6

#define	LUMP_FACES		7

#define	LUMP_LIGHTING	8

#define	LUMP_CLIPNODES	9

#define	LUMP_LEAFS		10

#define	LUMP_MARKSURFACES 11

#define	LUMP_EDGES		12

#define	LUMP_SURFEDGES	13

#define	LUMP_MODELS		14

#define	HEADER_LUMPS	15

typedef struct

{

	float		mins[3], maxs[3];

	float		origin[3];

	int			headnode[MAX_MAP_HULLS];

	int			visleafs;		// not including the solid leaf 0

	int			firstface, numfaces;

} dmodel_t;

typedef struct

{

	int			version;

	lump_t		lumps[HEADER_LUMPS];

} dheader_t;

typedef struct

{

	int			nummiptex;

	int			dataofs[4];		// [nummiptex]

} dmiptexlump_t;

#define	MIPLEVELS	4

typedef struct miptex_s

{

	char		name[16];

	unsigned	width, height;

	unsigned	offsets[MIPLEVELS];		// four mip maps stored

} miptex_t;

typedef struct

{

	float	point[3];

} dvertex_t;

// 0-2 are axial planes

#define	PLANE_X			0

#define	PLANE_Y			1

#define	PLANE_Z			2

// 3-5 are non-axial planes snapped to the nearest

#define	PLANE_ANYX		3

#define	PLANE_ANYY		4

#define	PLANE_ANYZ		5

typedef struct

{

	float	normal[3];

	float	dist;

	int		type;		// PLANE_X - PLANE_ANYZ ?remove? trivial to regenerate

} dplane_t;

#define	CONTENTS_EMPTY		-1

#define	CONTENTS_SOLID		-2

#define	CONTENTS_WATER		-3

#define	CONTENTS_SLIME		-4

#define	CONTENTS_LAVA		-5

#define	CONTENTS_SKY		-6

#define	CONTENTS_ORIGIN		-7		// removed at csg time

#define	CONTENTS_CLIP		-8		// changed to contents_solid

#define	CONTENTS_CURRENT_0		-9

#define	CONTENTS_CURRENT_90		-10

#define	CONTENTS_CURRENT_180	-11

#define	CONTENTS_CURRENT_270	-12

#define	CONTENTS_CURRENT_UP		-13

#define	CONTENTS_CURRENT_DOWN	-14

// !!! if this is changed, it must be changed in asm_i386.h too !!!

typedef struct

{

	int			planenum;

	short		children[2];	// negative numbers are -(leafs+1), not nodes

	short		mins[3];		// for sphere culling

	short		maxs[3];

	unsigned short	firstface;

	unsigned short	numfaces;	// counting both sides

} dnode_t;

typedef struct

{

	int			planenum;

	short		children[2];	// negative numbers are contents

} dclipnode_t;

typedef struct texinfo_s

{

	float		vecs[2][4];		// [s/t][xyz offset]

	int			miptex;

	int			flags;

} texinfo_t;

#define	TEX_SPECIAL		1		// sky or slime, no lightmap or 256 subdivision

// note that edge 0 is never used, because negative edge nums are used for

// counterclockwise use of the edge in a face

typedef struct

{

	unsigned short	v[2];		// vertex numbers

} dedge_t;

#define	MAXLIGHTMAPS	4

typedef struct

{

	short		planenum;

	short		side;

	int			firstedge;		// we must support > 64k edges

	short		numedges;

	short		texinfo;

// lighting info

	byte		styles[MAXLIGHTMAPS];

	int			lightofs;		// start of [numstyles*surfsize] samples

} dface_t;

#define	AMBIENT_WATER	0

#define	AMBIENT_SKY		1

#define	AMBIENT_SLIME	2

#define	AMBIENT_LAVA	3

#define	NUM_AMBIENTS			4		// automatic ambient sounds

// leaf 0 is the generic CONTENTS_SOLID leaf, used for all solid areas

// all other leafs need visibility info

typedef struct

{

	int			contents;

	int			visofs;				// -1 = no visibility info

	short		mins[3];			// for frustum culling

	short		maxs[3];

	unsigned short		firstmarksurface;

	unsigned short		nummarksurfaces;

	byte		ambient_level[NUM_AMBIENTS];

} dleaf_t;

//============================================================================

#ifndef QUAKE_GAME

#define	ANGLE_UP	-1

#define	ANGLE_DOWN	-2

// the utilities get to be lazy and just use large static arrays

extern	int			nummodels;

extern	dmodel_t	dmodels[MAX_MAP_MODELS];

extern	int			visdatasize;

extern	byte		dvisdata[MAX_MAP_VISIBILITY];

extern	int			lightdatasize;

extern	byte		dlightdata[MAX_MAP_LIGHTING];

extern	int			texdatasize;

extern	byte		dtexdata[MAX_MAP_MIPTEX]; // (dmiptexlump_t)

extern	int			entdatasize;

extern	char		dentdata[MAX_MAP_ENTSTRING];

extern	int			numleafs;

extern	dleaf_t		dleafs[MAX_MAP_LEAFS];

extern	int			numplanes;

extern	dplane_t	dplanes[MAX_MAP_PLANES];

extern	int			numvertexes;

extern	dvertex_t	dvertexes[MAX_MAP_VERTS];

extern	int			numnodes;

extern	dnode_t		dnodes[MAX_MAP_NODES];

extern	int			numtexinfo;

extern	texinfo_t	texinfo[MAX_MAP_TEXINFO];

extern	int			numfaces;

extern	dface_t		dfaces[MAX_MAP_FACES];

extern	int			numclipnodes;

extern	dclipnode_t	dclipnodes[MAX_MAP_CLIPNODES];

extern	int			numedges;

extern	dedge_t		dedges[MAX_MAP_EDGES];

extern	int			nummarksurfaces;

extern	unsigned short	dmarksurfaces[MAX_MAP_MARKSURFACES];

extern	int			numsurfedges;

extern	int			dsurfedges[MAX_MAP_SURFEDGES];

void DecompressVis (byte *in, byte *decompressed);

int CompressVis (byte *vis, byte *dest);

void	LoadBSPFile (char *filename);

void	WriteBSPFile (char *filename);

void	PrintBSPFileSizes (void);

//===============

typedef struct epair_s

{

	struct epair_s	*next;

	char	*key;

	char	*value;

} epair_t;

typedef struct

{

	vec3_t		origin;

	int			firstbrush;

	int			numbrushes;

	epair_t		*epairs;

} entity_t;

extern	int			num_entities;

extern	entity_t	entities[MAX_MAP_ENTITIES];

void	ParseEntities (void);

void	UnparseEntities (void);

void 	SetKeyValue (entity_t *ent, char *key, char *value);

char 	*ValueForKey (entity_t *ent, char *key);

// will return "" if not present

vec_t	FloatForKey (entity_t *ent, char *key);

void 	GetVectorForKey (entity_t *ent, char *key, vec3_t vec);

epair_t *ParseEpair (void);

#endif