q3files.h

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/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.

This file is part of Quake III Arena source code.

Quake III Arena source code 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.

Quake III Arena source code 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 Foobar; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
===========================================================================
*/
#ifndef __QFILES_H__
#define __QFILES_H__

//
// qfiles.h: quake file formats
// This file must be identical in the quake and utils directories
//

// surface geometry should not exceed these limits
#define SHADER_MAX_VERTEXES 1000
#define SHADER_MAX_INDEXES  (6*SHADER_MAX_VERTEXES)


// the maximum size of game reletive pathnames
#define MAX_QPATH       64


/*
========================================================================

PCX files are used for 8 bit images

========================================================================
* 

typedef struct {
    char    manufacturer;
    char    version;
    char    encoding;
    char    bits_per_pixel;
    unsigned short  xmin,ymin,xmax,ymax;
    unsigned short  hres,vres;
    unsigned char   palette[48];
    char    reserved;
    char    color_planes;
    unsigned short  bytes_per_line;
    unsigned short  palette_type;
    char    filler[58];
    unsigned char   data;           // unbounded
} pcx_t;


/*
========================================================================

TGA files are used for 24/32 bit images

========================================================================
* 

typedef struct _TargaHeader {
    unsigned char   id_length, colormap_type, image_type;
    unsigned short  colormap_index, colormap_length;
    unsigned char   colormap_size;
    unsigned short  x_origin, y_origin, width, height;
    unsigned char   pixel_size, attributes;
} TargaHeader;


*/

/*
========================================================================

.MD3 triangle model file format

========================================================================
*/

#define MD3_IDENT           (('3'<<24)+('P'<<16)+('D'<<8)+'I')
#define MD3_VERSION         15

// limits
#define MD3_MAX_LODS        4
#define MD3_MAX_TRIANGLES   8192    // per surface
#define MD3_MAX_VERTS       4096    // per surface
#define MD3_MAX_SHADERS     256     // per surface
#define MD3_MAX_FRAMES      1024    // per model
#define MD3_MAX_SURFACES    32      // per model
#define MD3_MAX_TAGS        16      // per frame

// vertex scales
#define MD3_XYZ_SCALE       (1.0/64)

typedef struct md3Frame_s {
    vec3_t      bounds[2];
    vec3_t      localOrigin;
    float       radius;
    char        name[16];
} md3Frame_t;

typedef struct md3Tag_s {
    char        name[MAX_QPATH];    // tag name
    vec3_t      origin;
    vec3_t      axis[3];
} md3Tag_t;

/*
** md3Surface_t
**
** CHUNK            SIZE
** header           sizeof( md3Surface_t )
** shaders          sizeof( md3Shader_t ) * numShaders
** triangles[0]     sizeof( md3Triangle_t ) * numTriangles
** st               sizeof( md3St_t ) * numVerts
** XyzNormals       sizeof( md3XyzNormal_t ) * numVerts * numFrames
*/

typedef struct {
    int     ident;              // 

    char    name[MAX_QPATH];    // polyset name

    int     flags;
    int     numFrames;          // all surfaces in a model should have the same

    int     numShaders;         // all surfaces in a model should have the same
    int     numVerts;

    int     numTriangles;
    int     ofsTriangles;

    int     ofsShaders;         // offset from start of md3Surface_t
    int     ofsSt;              // texture coords are common for all frames
    int     ofsXyzNormals;      // numVerts * numFrames

    int     ofsEnd;             // next surface follows
} md3Surface_t;

typedef struct {
    char            name[MAX_QPATH];
    int             shaderIndex;    // for in-game use
} md3Shader_t;

typedef struct {
    int         indexes[3];
} md3Triangle_t;

typedef struct {
    float       st[2];
} md3St_t;

typedef struct {
    short       xyz[3];
    short       normal;
} md3XyzNormal_t;

typedef struct {
    int         ident;
    int         version;

    char        name[MAX_QPATH];    // model name

    int         flags;

    int         numFrames;
    int         numTags;            
    int         numSurfaces;

    int         numSkins;

    int         ofsFrames;          // offset for first frame
    int         ofsTags;            // numFrames * numTags
    int         ofsSurfaces;        // first surface, others follow

    int         ofsEnd;             // end of file
} md3Header_t;



/*
==============================================================================

  .BSP file format

==============================================================================
*/


#define Q3_BSP_IDENT    (('P'<<24)+('S'<<16)+('B'<<8)+'I')
        // little-endian "IBSP"

#define Q3_BSP_VERSION          46


// there shouldn't be any problem with increasing these values at the
// expense of more memory allocation in the utilities
#define Q3_MAX_MAP_MODELS       0x400
#define Q3_MAX_MAP_BRUSHES      0x8000
#define Q3_MAX_MAP_ENTITIES 0x800
#define Q3_MAX_MAP_ENTSTRING    0x10000
#define Q3_MAX_MAP_SHADERS      0x400

#define Q3_MAX_MAP_AREAS        0x100   // MAX_MAP_AREA_BYTES in q_shared must match!
#define Q3_MAX_MAP_FOGS     0x100
#define Q3_MAX_MAP_PLANES       0x10000
#define Q3_MAX_MAP_NODES        0x10000
#define Q3_MAX_MAP_BRUSHSIDES   0x10000
#define Q3_MAX_MAP_LEAFS        0x10000
#define Q3_MAX_MAP_LEAFFACES    0x10000
#define Q3_MAX_MAP_LEAFBRUSHES  0x10000
#define Q3_MAX_MAP_PORTALS      0x10000
#define Q3_MAX_MAP_LIGHTING 0x400000
#define Q3_MAX_MAP_LIGHTGRID    0x400000
#define Q3_MAX_MAP_VISIBILITY   0x200000

#define Q3_MAX_MAP_DRAW_SURFS   0x20000
#define Q3_MAX_MAP_DRAW_VERTS   0x80000
#define Q3_MAX_MAP_DRAW_INDEXES 0x80000


// key / value pair sizes in the entities lump
#define Q3_MAX_KEY              32
#define Q3_MAX_VALUE            1024

// the editor uses these predefined yaw angles to orient entities up or down
#define ANGLE_UP            -1
#define ANGLE_DOWN          -2

#define LIGHTMAP_WIDTH      128
#define LIGHTMAP_HEIGHT     128


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


typedef struct {
    int     fileofs, filelen;
} q3_lump_t;

#define Q3_LUMP_ENTITIES        0
#define Q3_LUMP_SHADERS     1
#define Q3_LUMP_PLANES          2
#define Q3_LUMP_NODES           3
#define Q3_LUMP_LEAFS           4
#define Q3_LUMP_LEAFSURFACES    5
#define Q3_LUMP_LEAFBRUSHES 6
#define Q3_LUMP_MODELS          7
#define Q3_LUMP_BRUSHES     8
#define Q3_LUMP_BRUSHSIDES      9
#define Q3_LUMP_DRAWVERTS       10
#define Q3_LUMP_DRAWINDEXES 11
#define Q3_LUMP_FOGS            12
#define Q3_LUMP_SURFACES        13
#define Q3_LUMP_LIGHTMAPS       14
#define Q3_LUMP_LIGHTGRID       15
#define Q3_LUMP_VISIBILITY      16
#define Q3_HEADER_LUMPS     17

typedef struct {
    int         ident;
    int         version;

    q3_lump_t       lumps[Q3_HEADER_LUMPS];
} q3_dheader_t;

typedef struct {
    float       mins[3], maxs[3];
    int         firstSurface, numSurfaces;
    int         firstBrush, numBrushes;
} q3_dmodel_t;

typedef struct {
    char        shader[MAX_QPATH];
    int         surfaceFlags;
    int         contentFlags;
} q3_dshader_t;

// planes (x&~1) and (x&~1)+1 are allways opposites

typedef struct {
    float       normal[3];
    float       dist;
} q3_dplane_t;

typedef struct {
    int         planeNum;
    int         children[2];    // negative numbers are -(leafs+1), not nodes
    int         mins[3];        // for frustom culling
    int         maxs[3];
} q3_dnode_t;

typedef struct {
    int         cluster;            // -1 = opaque cluster (do I still store these?)
    int         area;

    int         mins[3];            // for frustum culling
    int         maxs[3];

    int         firstLeafSurface;
    int         numLeafSurfaces;

    int         firstLeafBrush;
    int         numLeafBrushes;
} q3_dleaf_t;

typedef struct {
    int         planeNum;           // positive plane side faces out of the leaf
    int         shaderNum;
} q3_dbrushside_t;

typedef struct {
    int         firstSide;
    int         numSides;
    int         shaderNum;      // the shader that determines the contents flags
} q3_dbrush_t;

typedef struct {
    char        shader[MAX_QPATH];
    int         brushNum;
    int         visibleSide;    // the brush side that ray tests need to clip against (-1 == none)
} q3_dfog_t;

typedef struct {
    vec3_t      xyz;
    float       st[2];
    float       lightmap[2];
    vec3_t      normal;
    byte        color[4];
} q3_drawVert_t;

typedef enum {
    MST_BAD,
    MST_PLANAR,
    MST_PATCH,
    MST_TRIANGLE_SOUP,
    MST_FLARE
} q3_mapSurfaceType_t;

typedef struct {
    int         shaderNum;
    int         fogNum;
    int         surfaceType;

    int         firstVert;
    int         numVerts;

    int         firstIndex;
    int         numIndexes;

    int         lightmapNum;
    int         lightmapX, lightmapY;
    int         lightmapWidth, lightmapHeight;

    vec3_t      lightmapOrigin;
    vec3_t      lightmapVecs[3];    // for patches, [0] and [1] are lodbounds

    int         patchWidth;
    int         patchHeight;
} q3_dsurface_t;


#endif

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