Joystick Magazine 1996 May/cd joy 71No13.iso/pc/demos/eurosoc/source/3deng.h

Text File | 1996-01-19 | 5KB | 309 lines

/********************************************************/
/*          3D ENGINE - Header File   17/01/95          */
/********************************************************/

#ifndef _3DENG_H_
#define _3DENG_H_


/**************/
/* DATA TYPES */

//Data size definitions
//use these as often as possible
typedef signed char byte;
typedef signed short word;
typedef signed int dword;
#ifndef BYTE
typedef unsigned char BYTE;
#endif
/*
#ifndef WORD
typedef unsigned short WORD;
#endif
#ifndef DWORD
typedef unsigned int DWORD;
#endif
*/
typedef float floatpt;

// Types used through 3D pipeline
typedef floatpt datapt;
typedef floatpt rotpt;
typedef dword scrpt;

// Word / Byte union
typedef union
    {
    struct {byte low,hiw;} d;
    word c;
    }
    dchar_u;

// DoubleWord / Word union
typedef union
    {
    struct {word low,hiw;} d;
    dword dw;
    }
    dword_u;



/**************/
/* MATH TYPES */

// General matrix type
typedef floatpt mat[4][4];

// Rotation matrix type (explicit for speed).
typedef union
    {
    mat arr;
    struct
        {
        floatpt r00,r01,r02,r03;
        floatpt r10,r11,r12,r13;
        floatpt r20,r21,r22,r23;
        }e;
    }
    qmat;



/*********************/
/* 3D GEOMETRY TYPES */

// 3D point & point-list types
typedef datapt *pt;
typedef datapt ptlist[];


// Face & face-list types
typedef word *face;
typedef word facelist[];


// Rotated point type
typedef rotpt *rpt;



/*********************/
/* 2D GEOMETRY TYPES */

// Screen point type
typedef struct
    {
    scrpt x,y;
    }
    pnt;

// Gourad screen point type
typedef struct
    {
    scrpt x,y,col;
    }
    ppnt;

// Screen point with z type (Bi-Quadratic mapping)
typedef struct
    {
    scrpt z,x,y;
    }
    zpnt;

// Screen polygon type (with average z for sort)
typedef struct
    {
    rotpt z;
    scrpt *pts;
    }
    pols;



/****************/
/* OBJECT TYPES */

// Object type
typedef struct
    {
    pt points;
    face faces;
    datapt x,y,z;
    floatpt crot,srot;
    }
    obj;

// Object list type
typedef struct
    {
    rotpt z;
    pols *polys;
    short nopols;
    }
    objs;

// Object detail level type
typedef struct
    {
    rotpt zscale; // min z/q for this detail level
    pt dpoints;
    face dfaces;
    }
    det;

// Object detail level list
typedef det detlist[];



/*****************/
/* SURFACE TYPES */

// Texture type
typedef dword texture[8]; // Assumes 4 pt textures, other nos of pts are padded out

// Polygon filter type
typedef BYTE filter[256];



/************************/
/* MOTION CAPTURE TYPES */

// Specific for players only
#define PLYRPTS 28

typedef datapt capfrm[PLYRPTS*3+1];

typedef struct
    {
    word cappts,capfrms;
    } mcap;



/*********************/
/* PLAYER INFO TYPES */

typedef struct
    {
    floatpt x,y,z,crot,srot,frame,fstep;
    short type,number,anim,sprite;
    BYTE htype,hcol;
    } plyrdat;

typedef struct
    {
    datapt *twnfrm;
    capfrm twnpts1,twnpts2;
    floatpt tween,tstep;
    short anim,animto;
    } plyrtwdat;



/**************/
/* MISC TYPES */

typedef struct
    {
    short sky;
    short stadia;
    short pitch;
    short players;
    short lines;
    short shadows;
    }
    detail_info;

// Setup data type
typedef struct
    {
    short M8;
    short team_a,team_b;
    short team_b_kit;
    short stadium;
    short vidi_type;
    short start_res;
    short screen_size;
    short verbose;
    detail_info detail;
    }
    setup_info;

// Screen buffer info type
typedef struct
    {
    BYTE *buff_start;
    scrpt buff_wid,buff_hgt;
    scrpt clip_wid,clip_hgt;
    float scale_x,scale_y;
    void (*dump)(scrpt dispx,scrpt dispy);
    }
    buff_info;

// Extended screen buffer info type
typedef struct
    {
    BYTE *buff_start;
    BYTE *clip_end,*clip_endl;
    scrpt buff_wid,buff_hgt;
    scrpt clip_wid,clip_hgt,clip_widl,clip_hgtl;
    scrpt clip_xmid,clip_ymid;
    float scale_x,scale_y;
    void (*dump)(scrpt dispx,scrpt dispy);
    }
    buff_info_ext;

typedef struct {
    int pitchfile,pitchpfile;
    char skytypes[2];
    int tmdfile;
    int sb1file,sb2file;
    datapt s1x,s1y,s1z;
    int s1pfile,s1ffile;
    datapt s2x,s2y,s2z;
    int s2pfile,s2ffile;
    datapt s3x,s3y,s3z;
    int s3pfile,s3ffile;
    datapt s4x,s4y,s4z;
    int s4pfile,s4ffile;
    int st_w,st_l,st_h;
    short noloop;
    int loop[20];
    int vid1x,vid1y,vid1z;
    int vid2x,vid2y,vid2z;
    int tunlx,tunly,tunlz;
    int vmap;
    }
    stad_info;

typedef struct {
    int headfile;
    int torsofile;
    int limbsfile;
    int nosfile;
    int palfile;
    int skinfile;
    int homepfile;
    int awaypfile;
    }
    teamk_info;



/***********************/
/* FUNCTION PROTOTYPES */

int init3d();
void setscreen();
void end3d();
void render3d(buff_info *buffer,datapt viewx,datapt viewy,datapt viewz,datapt targx,datapt targy,
              datapt targz,datapt vdist,plyrdat *plyrtb,datapt *xyz_ptr,word *ref_ptr);

#endif