/*
 * 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.
 * 
 */

#include "pr_comp.h"                   // defs shared with qcc
#include "progdefs.h"                  // generated by program cdefs

typedef union eval_s {
    string_t      string;
    float         _float;
    float         vector[3];
    func_t        function;
    int           _int;
    int           edict;
} eval_t;

#define	MAX_ENT_LEAFS	16
typedef struct edict_s {
    qboolean      free;
    link_t        area;                // linked to a division node or leaf

    int           num_leafs;
    short         leafnums[MAX_ENT_LEAFS];

    entity_state_t baseline;

    float         freetime;            // sv.time when the object was freed
    entvars_t     v;                   // C exported fields from progs
    // other fields from progs come immediately after
} edict_t;

#define	EDICT_FROM_AREA(l) STRUCT_FROM_LINK(l,edict_t,area)
#define	GETEDICTFIELDVALUE(ed, fieldoffset) (fieldoffset ? (eval_t *)((byte *)&ed->v + fieldoffset) : NULL)

extern int    eval_gravity, eval_items2, eval_ammo_shells1, eval_ammo_nails1;
extern int    eval_ammo_lava_nails, eval_ammo_rockets1, eval_ammo_multi_rockets;
extern int    eval_ammo_cells1, eval_ammo_plasma;

// nehahra specific
extern int    eval_alpha, eval_fullbright, eval_idealpitch, eval_pitch_speed;

extern dprograms_t *progs;
extern dfunction_t *pr_functions;
extern char  *pr_strings;
extern ddef_t *pr_globaldefs;
extern ddef_t *pr_fielddefs;
extern dstatement_t *pr_statements;
extern globalvars_t *pr_global_struct;
extern float *pr_globals;              // same as pr_global_struct

extern int    pr_edict_size;           // in bytes

void          PR_Init (void);

void          PR_ExecuteProgram (func_t fnum);
void          PR_LoadProgs (void);

void          PR_Profile_f (void);

edict_t      *ED_Alloc (void);
void          ED_Free (edict_t * ed);

char         *ED_NewString (char *string);
// returns a copy of the string allocated from the server's string heap

void          ED_Print (edict_t * ed);
void          ED_Write (FILE * f, edict_t * ed);
char         *ED_ParseEdict (char *data, edict_t * ent);

void          ED_WriteGlobals (FILE * f);
void          ED_ParseGlobals (char *data);

void          ED_LoadFromFile (char *data);

//define EDICT_NUM(n) ((edict_t *)(sv.edicts + (n)*pr_edict_size))
//define NUM_FOR_EDICT(e) (((byte *)(e) - sv.edicts)/pr_edict_size)

edict_t      *EDICT_NUM (int n);
int           NUM_FOR_EDICT (edict_t * e);

#define	NEXT_EDICT(e)	((edict_t *)((byte *)e + pr_edict_size))

#define	EDICT_TO_PROG(e) ((byte *)e - (byte *)sv.edicts)
#define PROG_TO_EDICT(e) ((edict_t *)((byte *)sv.edicts + e))

#define	G_FLOAT(o)	(pr_globals[o])
#define	G_INT(o)	(*(int *)&pr_globals[o])
#define	G_EDICT(o)	((edict_t *)((byte *)sv.edicts+ *(int *)&pr_globals[o]))
#define G_EDICTNUM(o)	NUM_FOR_EDICT(G_EDICT(o))
#define	G_VECTOR(o)	(&pr_globals[o])
#define	G_STRING(o)	(pr_strings + *(string_t *)&pr_globals[o])
#define	G_FUNCTION(o)	(*(func_t *)&pr_globals[o])

#define	E_FLOAT(e,o)	(((float*)&e->v)[o])
#define	E_INT(e,o)	(*(int *)&((float*)&e->v)[o])
#define	E_VECTOR(e,o)	(&((float*)&e->v)[o])
#define	E_STRING(e,o)	(pr_strings + *(string_t *)&((float*)&e->v)[o])

extern int    type_size[8];

typedef void  (*builtin_t) (void);
extern builtin_t *pr_builtins;
extern int    pr_numbuiltins;

extern int    pr_argc;

extern qboolean pr_trace;
extern dfunction_t *pr_xfunction;
extern int    pr_xstatement;

extern unsigned short pr_crc;

void          PR_RunError (char *error, ...);

void          ED_PrintEdicts (void);
void          ED_PrintNum (int ent);
dfunction_t  *ED_FindFunction (char *name);
