/*
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)

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

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);

eval_t *GetEdictFieldValue(edict_t *ed, char *field);