quakeforge-old/common/pr_edict.c

/*
	pr_edict.c

	entity dictionary

	Copyright (C) 1996-1997  Id Software, Inc.
	Copyright (C) 1999,2000  Nelson Rush.
	Copyright (C) 1999,2000  contributors of the QuakeForge project
	Please see the file "AUTHORS" for a list of contributors

	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:

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

	$Id$
*/

#include <ctype.h>
#include <quakedef.h>
#include <qtypes.h>
#include <net.h>
#include <cmd.h>
#include <sys.h>
#include <console.h>
#include <protocol.h>
#include <server.h>
#include <phys.h>
#include <mathlib.h>
#include <world.h>
#include <crc.h>

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

#ifdef QUAKEWORLD
int		type_size[8] = {1,sizeof(void *)/4,1,3,1,1,sizeof(void *)/4,sizeof(void *)/4};
#else
unsigned short		pr_crc;
int		type_size[8] = {1,sizeof(string_t)/4,1,3,1,1,sizeof(func_t)/4,sizeof(void *)/4};
#endif

ddef_t *ED_FieldAtOfs (int ofs);
qboolean	ED_ParseEpair (void *base, ddef_t *key, char *s);

#ifndef QUAKEWORLD
//cvar_t	nomonsters = {"nomonsters", "0"};
cvar_t	*nomonsters;
//cvar_t	gamecfg = {"gamecfg", "0"};
cvar_t	*gamecfg;
//cvar_t	scratch1 = {"scratch1", "0"};
cvar_t	*scratch1;
//cvar_t	scratch2 = {"scratch2", "0"};
cvar_t	*scratch2;
//cvar_t	scratch3 = {"scratch3", "0"};
cvar_t	*scratch3;
//cvar_t	scratch4 = {"scratch4", "0"};
cvar_t	*scratch4;
//cvar_t	savedgamecfg = {"savedgamecfg", "0", CVAR_ARCHIVE};
cvar_t	*savedgamecfg;
//cvar_t	saved1 = {"saved1", "0", CVAR_ARCHIVE};
cvar_t	*saved1;
//cvar_t	saved2 = {"saved2", "0", CVAR_ARCHIVE};
cvar_t	*saved2;
//cvar_t	saved3 = {"saved3", "0", CVAR_ARCHIVE};
cvar_t	*saved3;
//cvar_t	saved4 = {"saved4", "0", CVAR_ARCHIVE};
cvar_t	*saved4;
#endif

#define	MAX_FIELD_LEN	64
#define GEFV_CACHESIZE	2

typedef struct {
	ddef_t	*pcache;
	char	field[MAX_FIELD_LEN];
} gefv_cache;

static gefv_cache	gefvCache[GEFV_CACHESIZE] = {{NULL, ""}, {NULL, ""}};

#ifdef QUAKEWORLD
func_t SpectatorConnect;
func_t SpectatorThink;
func_t SpectatorDisconnect;
#endif


/*
=================
ED_ClearEdict

Sets everything to NULL
=================
*/
void
ED_ClearEdict ( edict_t *e )
{
	memset (&e->v, 0, progs->entityfields * 4);
	e->free = false;
}

/*
=================
ED_Alloc

Either finds a free edict, or allocates a new one.
Try to avoid reusing an entity that was recently freed, because it
can cause the client to think the entity morphed into something else
instead of being removed and recreated, which can cause interpolated
angles and bad trails.
=================
*/
edict_t *
ED_Alloc ( void )
{
	int			i;
	edict_t		*e;

#ifdef QUAKEWORLD
	for ( i=MAX_CLIENTS+1 ; i<sv.num_edicts ; i++)
#else
	for ( i=svs.maxclients+1 ; i<sv.num_edicts ; i++)
#endif
	{
		e = EDICT_NUM(i);
		// the first couple seconds of server time can involve a lot of
		// freeing and allocating, so relax the replacement policy
		if (e->free && ( e->freetime < 2 || sv.time - e->freetime > 0.5 ) )
		{
			ED_ClearEdict (e);
			return e;
		}
	}

	if (i == MAX_EDICTS)
#ifdef QUAKEWORLD
	{
		Con_Printf ("WARNING: ED_Alloc: no free edicts\n");
		i--;	// step on whatever is the last edict
		e = EDICT_NUM(i);
		SV_UnlinkEdict(e);
	}
	else
		sv.num_edicts++;
#else
		Sys_Error ("ED_Alloc: no free edicts");

	sv.num_edicts++;
#endif

	e = EDICT_NUM(i);
	ED_ClearEdict (e);

	return e;
}

/*
=================
ED_Free

Marks the edict as free
FIXME: walk all entities and NULL out references to this entity
=================
*/
void
ED_Free ( edict_t *ed )
{
	SV_UnlinkEdict (ed);		// unlink from world bsp

	ed->free = true;
	ed->v.model = 0;
	ed->v.takedamage = 0;
	ed->v.modelindex = 0;
	ed->v.colormap = 0;
	ed->v.skin = 0;
	ed->v.frame = 0;
	VectorCopy (vec3_origin, ed->v.origin);
	VectorCopy (vec3_origin, ed->v.angles);
	ed->v.nextthink = -1;
	ed->v.solid = 0;

	ed->freetime = sv.time;
}

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

/*
============
ED_GlobalAtOfs
============
*/
ddef_t *
ED_GlobalAtOfs ( int ofs )
{
	ddef_t		*def;
	int			i;

	for (i=0 ; i<progs->numglobaldefs ; i++)
	{
		def = &pr_globaldefs[i];
		if (def->ofs == ofs)
			return def;
	}
	return NULL;
}

/*
============
ED_FieldAtOfs
============
*/
ddef_t *
ED_FieldAtOfs ( int ofs )
{
	ddef_t		*def;
	int			i;

	for (i=0 ; i<progs->numfielddefs ; i++)
	{
		def = &pr_fielddefs[i];
		if (def->ofs == ofs)
			return def;
	}
	return NULL;
}

/*
============
ED_FindField
============
*/
ddef_t *
ED_FindField ( char *name )
{
	ddef_t		*def;
	int			i;

	for (i=0 ; i<progs->numfielddefs ; i++)
	{
		def = &pr_fielddefs[i];
		if (!strcmp(PR_GetString(def->s_name),name) )
			return def;
	}
	return NULL;
}


/*
============
ED_FindGlobal
============
*/
ddef_t *
ED_FindGlobal ( char *name )
{
	ddef_t		*def;
	int			i;

	for (i=0 ; i<progs->numglobaldefs ; i++)
	{
		def = &pr_globaldefs[i];
		if (!strcmp(PR_GetString(def->s_name),name) )
			return def;
	}
	return NULL;
}


/*
============
ED_FindFunction
============
*/
dfunction_t *
ED_FindFunction ( char *name )
{
	dfunction_t		*func;
	int				i;

	for (i=0 ; i<progs->numfunctions ; i++)
	{
		func = &pr_functions[i];
		if (!strcmp(PR_GetString(func->s_name),name) )
			return func;
	}
	return NULL;
}

eval_t *
GetEdictFieldValue ( edict_t *ed, char *field )
{
	ddef_t			*def = NULL;
	int				i;
	static int		rep = 0;

	for (i=0 ; i<GEFV_CACHESIZE ; i++)
	{
		if (!strcmp(field, gefvCache[i].field))
		{
			def = gefvCache[i].pcache;
			goto Done;
		}
	}

	def = ED_FindField (field);

	if (strlen(field) < MAX_FIELD_LEN)
	{
		gefvCache[rep].pcache = def;
		strcpy (gefvCache[rep].field, field);
		rep ^= 1;
	}

Done:
	if (!def)
		return NULL;

	return (eval_t *)((char *)&ed->v + def->ofs*4);
}

/*
============
PR_ValueString

Returns a string describing *data in a type specific manner
=============
*/
char *
PR_ValueString ( etype_t type, eval_t *val )
{
	static char	line[256];
	ddef_t		*def;
	dfunction_t	*f;

	type &= ~DEF_SAVEGLOBAL;

	switch (type)
	{
	case ev_string:
		snprintf(line, sizeof(line), "%s", PR_GetString(val->string));
		break;
	case ev_entity:
		snprintf(line, sizeof(line), "entity %i", NUM_FOR_EDICT(PROG_TO_EDICT(val->edict)) );
		break;
	case ev_function:
		f = pr_functions + val->function;
		snprintf(line, sizeof(line), "%s()", PR_GetString(f->s_name));
		break;
	case ev_field:
		def = ED_FieldAtOfs ( val->_int );
		snprintf(line, sizeof(line), ".%s", PR_GetString(def->s_name));
		break;
	case ev_void:
		snprintf(line, sizeof(line), "void");
		break;
	case ev_float:
		snprintf(line, sizeof(line), "%5.1f", val->_float);
		break;
	case ev_vector:
		snprintf(line, sizeof(line), "'%5.1f %5.1f %5.1f'", val->vector[0], val->vector[1], val->vector[2]);
		break;
	case ev_pointer:
		snprintf(line, sizeof(line), "pointer");
		break;
	default:
		snprintf(line, sizeof(line), "bad type %i", type);
		break;
	}

	return line;
}

/*
============
PR_UglyValueString

Returns a string describing *data in a type specific manner
Easier to parse than PR_ValueString
=============
*/
char *
PR_UglyValueString ( etype_t type, eval_t *val )
{
	static char	line[256];
	ddef_t		*def;
	dfunction_t	*f;

	type &= ~DEF_SAVEGLOBAL;

	switch (type)
	{
	case ev_string:
		snprintf(line, sizeof(line), "%s", PR_GetString(val->string));
		break;
	case ev_entity:
		snprintf(line, sizeof(line), "%i", NUM_FOR_EDICT(PROG_TO_EDICT(val->edict)));
		break;
	case ev_function:
		f = pr_functions + val->function;
		snprintf(line, sizeof(line), "%s", PR_GetString(f->s_name));
		break;
	case ev_field:
		def = ED_FieldAtOfs ( val->_int );
		snprintf(line, sizeof(line), "%s", PR_GetString(def->s_name));
		break;
	case ev_void:
		snprintf(line, sizeof(line), "void");
		break;
	case ev_float:
		snprintf(line, sizeof(line), "%f", val->_float);
		break;
	case ev_vector:
		snprintf(line, sizeof(line), "%f %f %f", val->vector[0], val->vector[1], val->vector[2]);
		break;
	default:
		snprintf(line, sizeof(line), "bad type %i", type);
		break;
	}

	return line;
}

/*
============
PR_GlobalString

Returns a string with a description and the contents of a global,
padded to 20 field width
============
*/
char *
PR_GlobalString ( int ofs )
{
	char	*s;
	int		i;
	ddef_t	*def;
	void	*val;
	static char	line[128];

	val = (void *)&pr_globals[ofs];
	def = ED_GlobalAtOfs(ofs);
	if (!def)
		snprintf(line, sizeof(line),"%i(???)", ofs);
	else
	{
		s = PR_ValueString (def->type, val);
		snprintf(line, sizeof(line),"%i(%s)%s", ofs, PR_GetString(def->s_name), s);
	}

	i = strlen(line);
	for ( ; i<20 ; i++)
		strcat (line," ");
	strcat (line," ");

	return line;
}

char *
PR_GlobalStringNoContents ( int ofs )
{
	int		i;
	ddef_t	*def;
	static char	line[128];

	def = ED_GlobalAtOfs(ofs);
	if (!def)
		snprintf(line, sizeof(line),"%i(???)", ofs);
	else
		snprintf(line, sizeof(line),"%i(%s)", ofs, PR_GetString(def->s_name));

	i = strlen(line);
	for ( ; i<20 ; i++)
		strcat (line," ");
	strcat (line," ");

	return line;
}


/*
=============
ED_Print

For debugging
=============
*/
void
ED_Print ( edict_t *ed )
{
	int		l;
	ddef_t	*d;
	int		*v;
	int		i, j;
	char	*name;
	int		type;

	if (ed->free)
	{
		Con_Printf ("FREE\n");
		return;
	}

	for (i=1 ; i<progs->numfielddefs ; i++)
	{
		d = &pr_fielddefs[i];
		name = PR_GetString(d->s_name);
		if (name[strlen(name)-2] == '_')
			continue;	// skip _x, _y, _z vars

		v = (int *)((char *)&ed->v + d->ofs*4);

	// if the value is still all 0, skip the field
		type = d->type & ~DEF_SAVEGLOBAL;

		for (j=0 ; j<type_size[type] ; j++)
			if (v[j])
				break;
		if (j == type_size[type])
			continue;

		Con_Printf ("%s",name);
		l = strlen (name);
		while (l++ < 15)
			Con_Printf (" ");

		Con_Printf ("%s\n", PR_ValueString(d->type, (eval_t *)v));
	}
}

/*
=============
ED_Write

For savegames
=============
*/
void
ED_Write ( QFile *f, edict_t *ed )
{
	ddef_t	*d;
	int		*v;
	int		i, j;
	char	*name;
	int		type;

	Qprintf (f, "{\n");

	if (ed->free)
	{
		Qprintf (f, "}\n");
		return;
	}

	for (i=1 ; i<progs->numfielddefs ; i++)
	{
		d = &pr_fielddefs[i];
		name = PR_GetString(d->s_name);
		if (name[strlen(name)-2] == '_')
			continue;	// skip _x, _y, _z vars

		v = (int *)((char *)&ed->v + d->ofs*4);

	// if the value is still all 0, skip the field
		type = d->type & ~DEF_SAVEGLOBAL;
		for (j=0 ; j<type_size[type] ; j++)
			if (v[j])
				break;
		if (j == type_size[type])
			continue;

		Qprintf (f,"\"%s\" ",name);
		Qprintf (f,"\"%s\"\n", PR_UglyValueString(d->type, (eval_t *)v));
	}

	Qprintf (f, "}\n");
}

void
ED_PrintNum ( int ent )
{
	ED_Print (EDICT_NUM(ent));
}

/*
=============
ED_PrintEdicts

For debugging, prints all the entities in the current server
=============
*/
void
ED_PrintEdicts ( void )
{
	int		i;

	Con_Printf ("%i entities\n", sv.num_edicts);
	for (i=0 ; i<sv.num_edicts ; i++)
	{
		Con_Printf ("\nEDICT %i:\n",i);
		ED_PrintNum (i);
	}
}

/*
=============
ED_PrintEdict_f

For debugging, prints a single edicy
=============
*/
void
ED_PrintEdict_f ( void )
{
	int		i;

	i = Q_atoi (Cmd_Argv(1));
#ifdef QUAKEWORLD
	Con_Printf ("\n EDICT %i:\n",i);
#else
	if (i >= sv.num_edicts)
	{
		Con_Printf("Bad edict number\n");
		return;
	}
#endif
	ED_PrintNum (i);
}

/*
=============
ED_Count

For debugging
=============
*/
void
ED_Count ( void )
{
	int		i;
	edict_t	*ent;
	int		active, models, solid, step;

	active = models = solid = step = 0;
	for (i=0 ; i<sv.num_edicts ; i++)
	{
		ent = EDICT_NUM(i);
		if (ent->free)
			continue;
		active++;
		if (ent->v.solid)
			solid++;
		if (ent->v.model)
			models++;
		if (ent->v.movetype == MOVETYPE_STEP)
			step++;
	}

	Con_Printf ("num_edicts:%3i\n", sv.num_edicts);
	Con_Printf ("active    :%3i\n", active);
	Con_Printf ("view      :%3i\n", models);
	Con_Printf ("touch     :%3i\n", solid);
	Con_Printf ("step      :%3i\n", step);
}

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

					ARCHIVING GLOBALS

FIXME: need to tag constants, doesn't really work
==============================================================================
*/

/*
=============
ED_WriteGlobals
=============
*/
void
ED_WriteGlobals ( QFile *f )
{
	ddef_t		*def;
	int			i;
	char		*name;
	int			type;

	Qprintf (f,"{\n");
	for (i=0 ; i<progs->numglobaldefs ; i++)
	{
		def = &pr_globaldefs[i];
		type = def->type;
		if ( !(def->type & DEF_SAVEGLOBAL) )
			continue;
		type &= ~DEF_SAVEGLOBAL;

		if (type != ev_string
		&& type != ev_float
		&& type != ev_entity)
			continue;

		name = PR_GetString(def->s_name);
		Qprintf (f,"\"%s\" ", name);
		Qprintf (f,"\"%s\"\n", PR_UglyValueString(type, (eval_t *)&pr_globals[def->ofs]));
	}
	Qprintf (f,"}\n");
}

/*
=============
ED_ParseGlobals
=============
*/
void
ED_ParseGlobals ( char *data )
{
	char	keyname[64];
	ddef_t	*key;

	while (1)
	{
	// parse key
		data = COM_Parse (data);
		if (com_token[0] == '}')
			break;
		if (!data)
#ifdef QUAKEWORLD
			SV_Error ("ED_ParseEntity: EOF without closing brace");
#else
			Sys_Error ("ED_ParseEntity: EOF without closing brace");
#endif

		strcpy (keyname, com_token);

	// parse value
		data = COM_Parse (data);
		if (!data)
#ifdef QUAKEWORLD
			SV_Error ("ED_ParseEntity: EOF without closing brace");
#else
			Sys_Error ("ED_ParseEntity: EOF without closing brace");
#endif

		if (com_token[0] == '}')
#ifdef QUAKEWORLD
			SV_Error ("ED_ParseEntity: closing brace without data");
#else
			Sys_Error ("ED_ParseEntity: closing brace without data");
#endif

		key = ED_FindGlobal (keyname);
		if (!key)
		{
			Con_Printf ("%s is not a global\n", keyname);
			continue;
		}

		if (!ED_ParseEpair ((void *)pr_globals, key, com_token))
#ifdef QUAKEWORLD
			SV_Error ("ED_ParseGlobals: parse error");
#else
			Host_Error ("ED_ParseGlobals: parse error");
#endif
	}
}

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


/*
=============
ED_NewString
=============
*/
char *
ED_NewString ( char *string )
{
	char	*new, *new_p;
	int		i,l;

	l = strlen(string) + 1;
	new = Hunk_Alloc (l);
	new_p = new;

	for (i=0 ; i< l ; i++)
	{
		if (string[i] == '\\' && i < l-1)
		{
			i++;
			if (string[i] == 'n')
				*new_p++ = '\n';
			else
				*new_p++ = '\\';
		}
		else
			*new_p++ = string[i];
	}

	return new;
}


/*
=============
ED_ParseEval

Can parse either fields or globals
returns false if error
=============
*/
qboolean
ED_ParseEpair ( void *base, ddef_t *key, char *s )
{
	int		i;
	char	string[128];
	ddef_t	*def;
	char	*v, *w;
	void	*d;
	dfunction_t	*func;

	d = (void *)((int *)base + key->ofs);

	switch (key->type & ~DEF_SAVEGLOBAL)
	{
	case ev_string:
		*(string_t *)d = PR_SetString(ED_NewString (s));
		break;

	case ev_float:
		*(float *)d = atof (s);
		break;

	case ev_vector:
		strcpy (string, s);
		v = string;
		w = string;
		for (i=0 ; i<3 ; i++)
		{
			while (*v && *v != ' ')
				v++;
			*v = 0;
			((float *)d)[i] = atof (w);
			w = v = v+1;
		}
		break;

	case ev_entity:
		*(int *)d = EDICT_TO_PROG(EDICT_NUM(atoi (s)));
		break;

	case ev_field:
		def = ED_FindField (s);
		if (!def)
		{
			Con_Printf ("Can't find field %s\n", s);
			return false;
		}
		*(int *)d = G_INT(def->ofs);
		break;

	case ev_function:
		func = ED_FindFunction (s);
		if (!func)
		{
			Con_Printf ("Can't find function %s\n", s);
			return false;
		}
		*(func_t *)d = func - pr_functions;
		break;

	default:
		break;
	}
	return true;
}

/*
====================
ED_ParseEdict

Parses an edict out of the given string, returning the new position
ed should be a properly initialized empty edict.
Used for initial level load and for savegames.
====================
*/
char *
ED_ParseEdict ( char *data, edict_t *ent )
{
	ddef_t		*key;
	qboolean	anglehack;
	qboolean	init;
	char		keyname[256];
#ifndef QUAKEWORLD
	int			n;
#endif

	init = false;

// clear it
	if (ent != sv.edicts)	// hack
		memset (&ent->v, 0, progs->entityfields * 4);

// go through all the dictionary pairs
	while (1)
	{
	// parse key
		data = COM_Parse (data);
		if (com_token[0] == '}')
			break;
		if (!data)
#ifdef QUAKEWORLD
			SV_Error ("ED_ParseEntity: EOF without closing brace");
#else
			Sys_Error ("ED_ParseEntity: EOF without closing brace");
#endif

// anglehack is to allow QuakeEd to write single scalar angles
// and allow them to be turned into vectors. (FIXME...)
if (!strcmp(com_token, "angle"))
{
	strcpy (com_token, "angles");
	anglehack = true;
}
else
	anglehack = false;

// FIXME: change light to _light to get rid of this hack
if (!strcmp(com_token, "light"))
	strcpy (com_token, "light_lev");	// hack for single light def

		strcpy (keyname, com_token);

#ifndef QUAKEWORLD
		// another hack to fix heynames with trailing spaces
		n = strlen(keyname);
		while (n && keyname[n-1] == ' ')
		{
			keyname[n-1] = 0;
			n--;
		}
#endif

	// parse value
		data = COM_Parse (data);
		if (!data)
#ifdef QUAKEWORLD
			SV_Error ("ED_ParseEntity: EOF without closing brace");
#else
			Sys_Error ("ED_ParseEntity: EOF without closing brace");
#endif

		if (com_token[0] == '}')
#ifdef QUAKEWORLD
			SV_Error ("ED_ParseEntity: closing brace without data");
#else
			Sys_Error ("ED_ParseEntity: closing brace without data");
#endif

		init = true;

// keynames with a leading underscore are used for utility comments,
// and are immediately discarded by quake
		if (keyname[0] == '_')
			continue;

		key = ED_FindField (keyname);
		if (!key)
		{
			Con_Printf ("%s is not a field\n", keyname);
			continue;
		}

		if (anglehack)
		{
			char	temp[32];
			strcpy (temp, com_token);
			snprintf(com_token, sizeof(com_token), "0 %s 0", temp);
		}

		if (!ED_ParseEpair ((void *)&ent->v, key, com_token))
#ifdef QUAKEWORLD
			SV_Error ("ED_ParseEdict: parse error");
#else
			Host_Error ("ED_ParseEdict: parse error");
#endif
	}

	if (!init)
		ent->free = true;

	return data;
}


/*
================
ED_LoadFromFile

The entities are directly placed in the array, rather than allocated with
ED_Alloc, because otherwise an error loading the map would have entity
number references out of order.

Creates a server's entity / program execution context by
parsing textual entity definitions out of an ent file.

Used for both fresh maps and savegame loads.  A fresh map would also need
to call ED_CallSpawnFunctions () to let the objects initialize themselves.
================
*/
void
ED_LoadFromFile ( char *data )
{
	edict_t		*ent;
	int			inhibit;
	dfunction_t	*func;

	ent = NULL;
	inhibit = 0;
	pr_global_struct->time = sv.time;

// parse ents
	while (1)
	{
// parse the opening brace
		data = COM_Parse (data);
		if (!data)
			break;
		if (com_token[0] != '{')
#ifdef QUAKEWORLD
			SV_Error ("ED_LoadFromFile: found %s when expecting {",com_token);
#else
			Sys_Error ("ED_LoadFromFile: found %s when expecting {",com_token);
#endif

		if (!ent)
			ent = EDICT_NUM(0);
		else
			ent = ED_Alloc ();
		data = ED_ParseEdict (data, ent);

// remove things from different skill levels or deathmatch
		if (deathmatch->value)
		{
			if (((int)ent->v.spawnflags & SPAWNFLAG_NOT_DEATHMATCH))
			{
				ED_Free (ent);
				inhibit++;
				continue;
			}
		}
		else if ((current_skill == 0 && ((int)ent->v.spawnflags & SPAWNFLAG_NOT_EASY))
				|| (current_skill == 1 && ((int)ent->v.spawnflags & SPAWNFLAG_NOT_MEDIUM))
				|| (current_skill >= 2 && ((int)ent->v.spawnflags & SPAWNFLAG_NOT_HARD)) )
		{
			ED_Free (ent);
			inhibit++;
			continue;
		}

//
// immediately call spawn function
//
		if (!ent->v.classname)
		{
			Con_Printf ("No classname for:\n");
			ED_Print (ent);
			ED_Free (ent);
			continue;
		}

	// look for the spawn function
		func = ED_FindFunction ( PR_GetString(ent->v.classname) );

		if (!func)
		{
			Con_Printf ("No spawn function for:\n");
			ED_Print (ent);
			ED_Free (ent);
			continue;
		}

		pr_global_struct->self = EDICT_TO_PROG(ent);
		PR_ExecuteProgram (func - pr_functions);
#ifdef QUAKEWORLD
		SV_FlushSignon();
#endif
	}

	Con_DPrintf ("%i entities inhibited\n", inhibit);
}


/*
===============
PR_LoadProgs
===============
*/
void
PR_LoadProgs ( void )
{
	int	i;

// flush the non-C variable lookup cache
	for (i=0 ; i<GEFV_CACHESIZE ; i++)
		gefvCache[i].field[0] = 0;

#ifndef QUAKEWORLD
	CRC_Init (&pr_crc);
#endif

#ifdef QUAKEWORLD
	progs = (dprograms_t *)COM_LoadHunkFile ("qwprogs.dat");
	if (!progs)
#endif
		progs = (dprograms_t *)COM_LoadHunkFile ("progs.dat");
	if (!progs)
#ifdef QUAKEWORLD
		SV_Error ("PR_LoadProgs: couldn't load progs.dat");
#else
		Sys_Error ("PR_LoadProgs: couldn't load progs.dat");
#endif
	Con_DPrintf ("Programs occupy %iK.\n", com_filesize/1024);

#ifdef QUAKEWORLD
	{
		char	num[32];

		// add prog crc to the serverinfo
		snprintf(num, sizeof(num), "%i", CRC_Block ((byte *)progs,
				com_filesize));
		Info_SetValueForStarKey(svs.info, "*progs", num,
					MAX_SERVERINFO_STRING);
	}
#else
	for (i=0 ; i<com_filesize ; i++)
		CRC_ProcessByte (&pr_crc, ((byte *)progs)[i]);
#endif

// byte swap the header
	for (i=0 ; i<sizeof(*progs)/4 ; i++)
		((int *)progs)[i] = LittleLong ( ((int *)progs)[i] );

	if (progs->version != PROG_VERSION)
#ifdef QUAKEWORLD
		SV_Error ("progs.dat has wrong version number (%i should be %i)", progs->version, PROG_VERSION);
#else
		Sys_Error ("progs.dat has wrong version number (%i should be %i)", progs->version, PROG_VERSION);
#endif
	if (progs->crc != PROGHEADER_CRC)
#ifdef QUAKEWORLD
		SV_Error ("You must have the progs.dat from QuakeWorld installed");
#else
		Sys_Error ("progs.dat system vars have been modified, progdefs.h is out of date");
#endif

	pr_functions = (dfunction_t *)((byte *)progs + progs->ofs_functions);
	pr_strings = (char *)progs + progs->ofs_strings;
	pr_globaldefs = (ddef_t *)((byte *)progs + progs->ofs_globaldefs);
	pr_fielddefs = (ddef_t *)((byte *)progs + progs->ofs_fielddefs);
	pr_statements = (dstatement_t *)((byte *)progs + progs->ofs_statements);

#ifdef QUAKEWORLD
	num_prstr = 0;
#endif

	pr_global_struct = (globalvars_t *)((byte *)progs + progs->ofs_globals);
	pr_globals = (float *)pr_global_struct;

	pr_edict_size = progs->entityfields * 4 + sizeof (edict_t) - sizeof(entvars_t);

// byte swap the lumps
	for (i=0 ; i<progs->numstatements ; i++)
	{
		pr_statements[i].op = LittleShort(pr_statements[i].op);
		pr_statements[i].a = LittleShort(pr_statements[i].a);
		pr_statements[i].b = LittleShort(pr_statements[i].b);
		pr_statements[i].c = LittleShort(pr_statements[i].c);
	}

	for (i=0 ; i<progs->numfunctions; i++)
	{
	pr_functions[i].first_statement = LittleLong (pr_functions[i].first_statement);
	pr_functions[i].parm_start = LittleLong (pr_functions[i].parm_start);
	pr_functions[i].s_name = LittleLong (pr_functions[i].s_name);
	pr_functions[i].s_file = LittleLong (pr_functions[i].s_file);
	pr_functions[i].numparms = LittleLong (pr_functions[i].numparms);
	pr_functions[i].locals = LittleLong (pr_functions[i].locals);
	}

	for (i=0 ; i<progs->numglobaldefs ; i++)
	{
		pr_globaldefs[i].type = LittleShort (pr_globaldefs[i].type);
		pr_globaldefs[i].ofs = LittleShort (pr_globaldefs[i].ofs);
		pr_globaldefs[i].s_name = LittleLong (pr_globaldefs[i].s_name);
	}

	for (i=0 ; i<progs->numfielddefs ; i++)
	{
		pr_fielddefs[i].type = LittleShort (pr_fielddefs[i].type);
		if (pr_fielddefs[i].type & DEF_SAVEGLOBAL)
#ifdef QUAKEWORLD
			SV_Error ("PR_LoadProgs: pr_fielddefs[i].type & DEF_SAVEGLOBAL");
#else
			Sys_Error ("PR_LoadProgs: pr_fielddefs[i].type & DEF_SAVEGLOBAL");
#endif
		pr_fielddefs[i].ofs = LittleShort (pr_fielddefs[i].ofs);
		pr_fielddefs[i].s_name = LittleLong (pr_fielddefs[i].s_name);
	}

	for (i=0 ; i<progs->numglobals ; i++)
		((int *)pr_globals)[i] = LittleLong (((int *)pr_globals)[i]);

#ifdef QUAKEWORLD
	{
		dfunction_t *f;

		// Zoid, find the spectator functions
		SpectatorConnect = SpectatorThink = SpectatorDisconnect = 0;

		if ((f = ED_FindFunction ("SpectatorConnect")) != NULL)
			SpectatorConnect = (func_t)(f - pr_functions);
		if ((f = ED_FindFunction ("SpectatorThink")) != NULL)
			SpectatorThink = (func_t)(f - pr_functions);
		if ((f = ED_FindFunction ("SpectatorDisconnect")) != NULL)
			SpectatorDisconnect = (func_t)(f - pr_functions);
	}
#endif
}


/*
===============
PR_Init
===============
*/
void
PR_Init ( void )
{
	Cmd_AddCommand ("edict", ED_PrintEdict_f);
	Cmd_AddCommand ("edicts", ED_PrintEdicts);
	Cmd_AddCommand ("edictcount", ED_Count);
	Cmd_AddCommand ("profile", PR_Profile_f);
#ifndef QUAKEWORLD
//	Cvar_RegisterVariable (&nomonsters);
	nomonsters = Cvar_Get ("nomonsters","0",0,"None");
//	Cvar_RegisterVariable (&gamecfg);
	gamecfg = Cvar_Get ("gamecfg","0",0,"None");
//	Cvar_RegisterVariable (&scratch1);
	scratch1 = Cvar_Get ("scratch1","0",0,"None");
//	Cvar_RegisterVariable (&scratch2);
	scratch2 = Cvar_Get ("scratch2","0",0,"None");
//	Cvar_RegisterVariable (&scratch3);
	scratch3 = Cvar_Get ("scratch3","0",0,"None");
//	Cvar_RegisterVariable (&scratch4);
	scratch4 = Cvar_Get ("scratch4","0",0,"None");
//	Cvar_RegisterVariable (&savedgamecfg);
	savedgamecfg = Cvar_Get ("savedgamecfg","0",CVAR_ARCHIVE,"None");
//	Cvar_RegisterVariable (&saved1);
	saved1 = Cvar_Get ("saved1","0",CVAR_ARCHIVE,"None");
//	Cvar_RegisterVariable (&saved2);
	saved2 = Cvar_Get ("saved2","0",CVAR_ARCHIVE,"None");
//	Cvar_RegisterVariable (&saved3);
	saved3 = Cvar_Get ("saved3","0",CVAR_ARCHIVE,"None");
//	Cvar_RegisterVariable (&saved4);
	saved4 = Cvar_Get ("saved4","0",CVAR_ARCHIVE,"None");
#endif
}


edict_t *
EDICT_NUM ( int n )
{
	if (n < 0 || n >= MAX_EDICTS)
#ifdef QUAKEWORLD
		SV_Error ("EDICT_NUM: bad number %i", n);
#else
		Sys_Error ("EDICT_NUM: bad number %i", n);
#endif
	return (edict_t *)((byte *)sv.edicts+ (n)*pr_edict_size);
}

int
NUM_FOR_EDICT ( edict_t *e )
{
	int		b;

	b = (byte *)e - (byte *)sv.edicts;
	b = b / pr_edict_size;

	if (b < 0 || b >= sv.num_edicts)
#ifdef QUAKEWORLD
		SV_Error ("NUM_FOR_EDICT: bad pointer");
#else
		Sys_Error ("NUM_FOR_EDICT: bad pointer");
#endif
	return b;
}