/*
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.

*/
// sv_edict.c -- entity dictionary

#include "quakedef.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

unsigned short		pr_crc;

int		type_size[8] = {1,sizeof(string_t)/4,1,3,1,1,sizeof(func_t)/4,sizeof(void *)/4};

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

// 2001-09-14 Enhanced BuiltIn Function System (EBFS) by Maddes  start
cvar_t	pr_builtin_find = {"pr_builtin_find", "0", false, false};
cvar_t	pr_builtin_remap = {"pr_builtin_remap", "0", false, false};
// 2001-09-14 Enhanced BuiltIn Function System (EBFS) by Maddes  end
cvar_t	pr_checkextension = {"pr_checkextension", "0", false, false};	// 2001-10-20 Extension System by LordHavoc (DP compatibility)
cvar_t	nomonsters = {"nomonsters", "0"};
cvar_t	gamecfg = {"gamecfg", "0"};
cvar_t	scratch1 = {"scratch1", "0"};
cvar_t	scratch2 = {"scratch2", "0"};
cvar_t	scratch3 = {"scratch3", "0"};
cvar_t	scratch4 = {"scratch4", "0"};
cvar_t	savedgamecfg = {"savedgamecfg", "0", true};
cvar_t	saved1 = {"saved1", "0", true};
cvar_t	saved2 = {"saved2", "0", true};
cvar_t	saved3 = {"saved3", "0", true};
cvar_t	saved4 = {"saved4", "0", true};

#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, ""}};

// 2001-10-20 TIMESCALE extension by Tomaz/Maddes  start
ddef_t	*pr_global_cpu_frametime;
ddef_t	*pr_global_org_frametime;
// 2001-10-20 TIMESCALE extension by Tomaz/Maddes  end

// 2001-10-20 Extension System by LordHavoc  start
void PR_Extension_List_f(void)
{
    int		i;
    char	*partial;
    int		len;
    int		count;

    if (Cmd_Argc() > 1) {
        partial = Cmd_Argv(1);
        len = strlen(partial);
    } else {
        partial = NULL;
        len = 0;
    }

    count=0;
    for (i=0; i < pr_numextensions; i++) {
        if (partial && Q_strncasecmp(partial, pr_extensions[i], len)) {
            continue;
        }
        count++;
        Con_Printf("%s\n", pr_extensions[i]);
    }

    Con_Printf("------------\n");
    if (partial) {
        Con_Printf("%i beginning with \"%s\" out of ", count, partial);
    }
    Con_Printf("%i extensions\n", i);
}
// 2001-10-20 Extension System by LordHavoc  end
/*
=================
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;

    for (i=svs.maxclients+1 ; i<sv.num_edicts ; i++) {
        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) {
        Sys_Error("ED_Alloc: no free edicts");
    }

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

    return line;
}

// reduced savegames - begin
char *MK_cleanftos(float f)
{
    int i = (int)f;
    if (fabs(f) < 0.000001) {
        return "0";
    }
    if (f == i) {
        return va("%i", i);
    } else {
        char s[256];
        Q_strcpy(s, va("%f", f));
        for (i = Q_strlen(s)-1 ; i >= 0 ; i--) {
            if (s[i]!='0' && s[i]!='.') {
                break;
            }
            if (s[i]=='0') {
                s[i]=0;
            } else if (s[i]=='.') {
                s[i]=0;
                break;
            }
        }
        return va("%s", s);
    }
}
// reduced savegames - end

/*
============
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:
        sprintf(line, "%s", pr_strings + val->string);
        break;
    case ev_entity:
        sprintf(line, "%i", NUM_FOR_EDICT(PROG_TO_EDICT(val->edict)));
        break;
    case ev_function:
        f = pr_functions + val->function;
        sprintf(line, "%s", pr_strings + f->s_name);
        break;
    case ev_field:
        def = ED_FieldAtOfs(val->_int);
        sprintf(line, "%s", pr_strings + def->s_name);
        break;
    case ev_void:
        sprintf(line, "void");
        break;
    case ev_float:
        sprintf(line, "%s", MK_cleanftos(val->_float));  // reduced savegames
        break;
    case ev_vector:
        // reduced savegames - begin
        sprintf(line,	  "%s",		  MK_cleanftos(val->vector[0]));
        sprintf(line, "%s %s", line, MK_cleanftos(val->vector[1]));
        sprintf(line, "%s %s", line, MK_cleanftos(val->vector[2]));
        // reduced savegames - end
        break;
    default:
        sprintf(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) {
        sprintf(line,"%i(??\?)", ofs);    // compiler warning fix - edited
    } else {
        s = PR_ValueString(def->type, val);
        sprintf(line,"%i(%s)%s", ofs, pr_strings + 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) {
        sprintf(line,"%i(??\?)", ofs);    // compiler warning fix - edited
    } else {
        sprintf(line,"%i(%s)", ofs, pr_strings + 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;
    }

    Con_Printf("\nEDICT %i:\n", NUM_FOR_EDICT(ed));
    for (i=1 ; i<progs->numfielddefs ; i++) {
        d = &pr_fielddefs[i];
        name = pr_strings + 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(FILE *f, edict_t *ed)
{
    ddef_t	*d;
    int		*v;
    int		i, j;
    char	*name;
    int		type;

    fprintf(f, "{\n");

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

    for (i=1 ; i<progs->numfielddefs ; i++) {
        d = &pr_fielddefs[i];
        name = pr_strings + 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;
        }

        // reduced savegames - begin
        {
            char s[256];
            eval_t	*val;
            val = (eval_t *)v;
            Q_strcpy(s, PR_UglyValueString(d->type, (eval_t *)v));
            // this happens when a string is set to "" in the QC code
            if (d->type == ev_string && !strcmp(s, "")) {
                continue;
            }
            // these happens sometimes
            if (d->type == ev_float && !strcmp(s, "0")) {
                continue;
            }
            if (d->type == ev_vector && !strcmp(s, "0 0 0")) {
                continue;
            }
            // absmin/absmax are generated when the engine relinks entities to nodes
            // The engine will need to relink entities on load to properly associate them with areas of the map,
            // so yeah, it is pretty pointless to save em.
            if (!strcmp(name, "absmin")) {
                continue;
            }
            if (!strcmp(name, "absmax")) {
                continue;
            }
            fprintf(f,"%s ", name);
            Cmd_TokenizeString(s);
            if (Cmd_Argc() != 1) {
                fprintf(f,"\"%s\"\n", s);
            } else {
                fprintf(f,"%s\n", s);
            }
        }
        // reduced savegames - end
    }

    fprintf(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++) {
        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));
    if (i >= sv.num_edicts) {
        Con_Printf("Bad edict number\n");
        return;
    }
    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(FILE *f)
{
    ddef_t		*def;
    int			i;
    char		*name;
    int			type;

    fprintf(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_strings + def->s_name;

        // reduced savegames - begin
        {
            eval_t *val;
            val = (eval_t *)&pr_globals[def->ofs];
            if (type == ev_string && !strcmp(pr_strings + val->string, "")) {
                continue;
            }
            if (type == ev_float && fabs(val->_float) < 0.000001) {
                continue;
            }
            if (type == ev_entity && val->edict == 0) {
                continue;
            }
            fprintf(f,"%s ", name);
            Cmd_TokenizeString(PR_UglyValueString(type, (eval_t *)&pr_globals[def->ofs]));
            if (Cmd_Argc() != 1) {
                fprintf(f,"\"%s\"\n", PR_UglyValueString(type, (eval_t *)&pr_globals[def->ofs]));
            } else {
                fprintf(f,"%s\n", PR_UglyValueString(type, (eval_t *)&pr_globals[def->ofs]));
            }
        }
        // reduced savegames - end

    }
    fprintf(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) {
            Sys_Error("ED_ParseEntity: EOF without closing brace");
        }

        strcpy(keyname, com_token);

        // parse value
        data = COM_Parse(data);
        if (!data) {
            Sys_Error("ED_ParseEntity: EOF without closing brace");
        }

        if (com_token[0] == '}') {
            Sys_Error("ED_ParseEntity: closing brace without data");
        }

        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)) {
            Host_Error("ED_ParseGlobals: parse error");
        }
    }
}

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


/*
=============
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 = ED_NewString(s) - pr_strings;
        break;

    case ev_float:
        *(float *)d = Q_atof(s);  // BlackAura (08-12-2002) - Changed atof() to Q_atof
        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] = Q_atof(w);  // BlackAura (08-12-2002) - Changed atof() to Q_atof
            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		prev_ed_name[256]; // Edited
char		badfields[256*4]; // Edited
char *ED_ParseEdict(char *data, edict_t *ent)
{
    ddef_t		*key;
    qboolean	anglehack;
    qboolean	init;
    char		keyname[256];
    int			n;

    badfields[0] = 0; // clear it

    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) {
            Sys_Error("ED_ParseEntity: EOF without closing brace");
        }

// 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;
        }
        // rotating brushes - begin
        // We must not allow the world model to rotate, so here's a hack to prevent this
        if (ent->v.modelindex == 1) // world model
            if (!strcmp(com_token, "angles")) {
                com_token[0] = '_';    // hack to skip the value
            }
        // rotating brushes - end

// 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);

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

        // parse value
        data = COM_Parse(data);
        if (!data) {
            Sys_Error("ED_ParseEntity: EOF without closing brace");
        }

        if (com_token[0] == '}') {
            Sys_Error("ED_ParseEntity: closing brace without data");
        }

        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) {
            Q_strcat(badfields, va("'%s' is not a field\n", keyname)); // Edited
            //	Con_Printf ("'%s' is not a field\n", keyname); // removed
            continue;
        }

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

        if (!ED_ParseEpair((void *)&ent->v, key, com_token)) {
            Host_Error("ED_ParseEdict: parse error");
        }
    }

    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;

    prev_ed_name[0] = 0; // clear it
// parse ents
    while (1) {
// parse the opening brace
        data = COM_Parse(data);
        if (!data) {
            break;
        }
        if (com_token[0] != '{') {
            Sys_Error("ED_LoadFromFile: found %s when expecting {",com_token);
        }

        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_strings + ent->v.classname);

        if (!func) {
            // begin
            // don't print the same kind of entity over and over, it's annoying. (ex: waypoints)
            ddef_t	*d;
            int		*v;
            d = &pr_fielddefs[37]; // classname
            v = (int *)((char *)&ent->v + d->ofs*4);

            if (Q_strcmp(prev_ed_name, PR_ValueString(d->type, (eval_t *)v))) {
                Q_strcpy(prev_ed_name, PR_ValueString(d->type, (eval_t *)v));
                // end
                Con_Printf("No spawn function for:\n");
                ED_Print(ent);
                //		if (badfields[0]) Con_Printf(badfields); // Edited
            } // Edited
            ED_Free(ent);
            continue;
        }
        if (badfields[0]) {
            Con_Printf(badfields);    // Edited
        }

        pr_global_struct->self = EDICT_TO_PROG(ent);
        PR_ExecuteProgram(func - pr_functions);
    }

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


/*
===============
PR_LoadProgs
===============
*/
void PR_LoadProgs(void)
{
    int		i;
// 2001-09-14 Enhanced BuiltIn Function System (EBFS) by Maddes/Firestorm  start
    int 	j;
    int		funcno;
    char	*funcname;
// 2001-09-14 Enhanced BuiltIn Function System (EBFS) by Maddes/Firestorm  end
    dfunction_t	*f; // FrikaC - EndFrame function
    loadedfile_t	*fileinfo;	// 2001-09-12 Returning information about loaded file by Maddes
    etype_t	type;	// 2001-10-20 TIMESCALE extension by Tomaz/Maddes

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

    CRC_Init(&pr_crc);

// 2001-09-12 Returning information about loaded file by Maddes  start
    /*
    	progs = (dprograms_t *)COM_LoadHunkFile ("progs.dat");
    	if (!progs)
    */
    fileinfo = COM_LoadHunkFile("progs.dat");
    if (!fileinfo)
// 2001-09-12 Returning information about loaded file by Maddes  end
    {
        Sys_Error("PR_LoadProgs: couldn't load progs.dat");
    }
    progs = (dprograms_t *)fileinfo->data;	// 2001-09-12 Returning information about loaded file by Maddes
    Con_DPrintf("progs.dat occupy %iK.\n", com_filesize/1024);  // edited

    for (i=0 ; i<com_filesize ; i++) {
        CRC_ProcessByte(&pr_crc, ((byte *)progs)[i]);
    }

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

    if (progs->version != PROG_VERSION) {
        Sys_Error("progs.dat has wrong version number (%i should be %i)", progs->version, PROG_VERSION);
    }
    if (progs->crc != PROGHEADER_CRC) {
        Sys_Error("progs.dat system vars have been modified, progdefs.h is out of date");
    }

    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);

    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);
    }

// 2001-09-14 Enhanced BuiltIn Function System (EBFS) by Maddes/Firestorm  start
    // initialize function numbers for PROGS.DAT
    pr_numbuiltins = 0;
    pr_builtins = NULL;
    if (pr_builtin_remap.value) {
        // remove all previous assigned function numbers
        for (j=1 ; j < pr_ebfs_numbuiltins; j++) {
            pr_ebfs_builtins[j].funcno = 0;
        }
    } else {
        // use default function numbers
        for (j=1 ; j < pr_ebfs_numbuiltins; j++) {
            pr_ebfs_builtins[j].funcno = pr_ebfs_builtins[j].default_funcno;
            // determine highest builtin number (when NOT remapped)
            if (pr_ebfs_builtins[j].funcno > pr_numbuiltins) {
                pr_numbuiltins = pr_ebfs_builtins[j].funcno;
            }
        }
    }
// 2001-09-14 Enhanced BuiltIn Function System (EBFS) by Maddes/Firestorm  end
    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);
// 2001-09-14 Enhanced BuiltIn Function System (EBFS) by Maddes/Firestorm  start
        if (pr_builtin_remap.value) {
            if (pr_functions[i].first_statement < 0) {	// builtin function
                funcno = -pr_functions[i].first_statement;
                funcname = pr_strings + pr_functions[i].s_name;

                // search function name
                for (j=1 ; j < pr_ebfs_numbuiltins ; j++) {
                    if (!(Q_strcasecmp(funcname, pr_ebfs_builtins[j].funcname))) {
                        break;	// found
                    }
                }

                if (j < pr_ebfs_numbuiltins) {	// found
                    pr_ebfs_builtins[j].funcno = funcno;
                } else {
                    Con_DPrintf("Can not assign builtin number #%i to %s - function unknown\n", funcno, funcname);
                }
            }
        }
// 2001-09-14 Enhanced BuiltIn Function System (EBFS) by Maddes/Firestorm  end
    }
// 2001-09-14 Enhanced BuiltIn Function System (EBFS) by Maddes/Firestorm  start
    if (pr_builtin_remap.value) {
        // check for unassigned functions and try to assign their default function number
        for (i=1 ; i < pr_ebfs_numbuiltins; i++) {
            if ((!pr_ebfs_builtins[i].funcno) && (pr_ebfs_builtins[i].default_funcno)) {	// unassigned and has a default number
                // check if default number is already assigned to another function
                for (j=1 ; j < pr_ebfs_numbuiltins; j++) {
                    if (pr_ebfs_builtins[j].funcno == pr_ebfs_builtins[i].default_funcno) {
                        break;	// number already assigned to another builtin function
                    }
                }

                if (j < pr_ebfs_numbuiltins) {	// already assigned
                    Con_DPrintf("Can not assign default builtin number #%i to %s - number is already assigned to %s\n",
                                pr_ebfs_builtins[i].default_funcno, pr_ebfs_builtins[i].funcname, pr_ebfs_builtins[j].funcname);
                } else {
                    pr_ebfs_builtins[i].funcno = pr_ebfs_builtins[i].default_funcno;
                }
            }
            // determine highest builtin number (when remapped)
            if (pr_ebfs_builtins[i].funcno > pr_numbuiltins) {
                pr_numbuiltins = pr_ebfs_builtins[i].funcno;
            }
        }
    }
    pr_numbuiltins++;

    // allocate and initialize builtin list for execution time
    pr_builtins = Hunk_AllocName(pr_numbuiltins*sizeof(builtin_t), "builtins");
    for (i=0 ; i < pr_numbuiltins ; i++) {
        pr_builtins[i] = pr_ebfs_builtins[0].function;
    }

    // create builtin list for execution time and set cvars accordingly
    Cvar_Set("pr_builtin_find", "0");
//	Cvar_Set("pr_checkextension", "0");	// 2001-10-20 Extension System by Lord Havoc/Maddes (DP compatibility)
    for (j=1 ; j < pr_ebfs_numbuiltins ; j++) {
        if (pr_ebfs_builtins[j].funcno) {	// only put assigned functions into builtin list
            pr_builtins[pr_ebfs_builtins[j].funcno] = pr_ebfs_builtins[j].function;
        }

        if (pr_ebfs_builtins[j].default_funcno == PR_DEFAULT_FUNCNO_BUILTIN_FIND) {
            Cvar_SetValue("pr_builtin_find", pr_ebfs_builtins[j].funcno);
        }

// 2001-10-20 Extension System by Lord Havoc/Maddes (DP compatibility)  start
        if (pr_ebfs_builtins[j].default_funcno == PR_DEFAULT_FUNCNO_EXTENSION_FIND) {
            Cvar_SetValue("pr_checkextension", pr_ebfs_builtins[j].funcno);
        }
// 2001-10-20 Extension System by Lord Havoc/Maddes (DP compatibility)  end
    }
// 2001-09-14 Enhanced BuiltIn Function System (EBFS) by Maddes/Firestorm  end

    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) {
            Sys_Error("PR_LoadProgs: pr_fielddefs[i].type & DEF_SAVEGLOBAL");
        }
        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]);
    }

    // FrikaC - EndFrame function - begin
    EndFrame = 0;
    if ((f = ED_FindFunction("EndFrame")) != NULL) {
        EndFrame = (func_t)(f - pr_functions);
    }
    // FrikaC - EndFrame function - end

// 2001-10-20 TIMESCALE extension by Tomaz/Maddes  start
    pr_global_cpu_frametime = ED_FindGlobal("cpu_frametime");
    if (pr_global_cpu_frametime) {
        type = pr_global_cpu_frametime->type;
        type &= ~DEF_SAVEGLOBAL;
        if (type != ev_float) {
            pr_global_cpu_frametime = NULL;
        }
    }

    pr_global_org_frametime = ED_FindGlobal("org_frametime");
    if (pr_global_org_frametime) {
        type = pr_global_org_frametime->type;
        type &= ~DEF_SAVEGLOBAL;
        if (type != ev_float) {
            pr_global_org_frametime = NULL;
        }
    }
// 2001-10-20 TIMESCALE extension by Tomaz/Maddes  end
}


// 2001-09-14 Enhanced BuiltIn Function System (EBFS) by Maddes  start
/*
=============
PR_BuiltInList_f

For debugging, prints all builtin functions with assigned and default number
=============
*/
void PR_BuiltInList_f(void)
{
    int		i;
    char	*partial;
    int		len;
    int		count;

    if (Cmd_Argc() > 1) {
        partial = Cmd_Argv(1);
        len = strlen(partial);
    } else {
        partial = NULL;
        len = 0;
    }

    count=0;
    for (i=1; i < pr_ebfs_numbuiltins; i++) {
        if (partial && Q_strncasecmp(partial, pr_ebfs_builtins[i].funcname, len)) {
            continue;
        }
        count++;
        Con_Printf("%i(%i): %s\n", pr_ebfs_builtins[i].funcno, pr_ebfs_builtins[i].default_funcno, pr_ebfs_builtins[i].funcname);
    }

    Con_Printf("------------\n");
    if (partial) {
        Con_Printf("%i beginning with \"%s\" out of ", count, partial);
    }
    Con_Printf("%i builtin functions\n", i);
}
// 2001-09-14 Enhanced BuiltIn Function System (EBFS) by Maddes  end
/*
===============
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);
    Cmd_AddCommand("builtinlist", PR_BuiltInList_f);	// 2001-09-14 Enhanced BuiltIn Function System (EBFS) by Maddes
    Cmd_AddCommand("extensionlist", PR_Extension_List_f);	// 2001-10-20 Extension System by LordHavoc
    Cvar_RegisterVariable(&nomonsters);
    Cvar_RegisterVariable(&gamecfg);
    Cvar_RegisterVariable(&scratch1);
    Cvar_RegisterVariable(&scratch2);
    Cvar_RegisterVariable(&scratch3);
    Cvar_RegisterVariable(&scratch4);
    Cvar_RegisterVariable(&savedgamecfg);
    Cvar_RegisterVariable(&saved1);
    Cvar_RegisterVariable(&saved2);
    Cvar_RegisterVariable(&saved3);
    Cvar_RegisterVariable(&saved4);
// 2001-09-14 Enhanced BuiltIn Function System (EBFS) by Maddes  start
    Cvar_RegisterVariable(&pr_builtin_find);
    Cvar_RegisterVariable(&pr_builtin_remap);
// 2001-09-14 Enhanced BuiltIn Function System (EBFS) by Maddes  end
    Cvar_RegisterVariable(&pr_checkextension);	// 2001-10-20 Extension System by LordHavoc (DP compatibility)
}



edict_t *EDICT_NUM(int n)
{
    if (n < 0 || n >= sv.max_edicts) {
        Sys_Error("EDICT_NUM: bad number %i", n);
    }
    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) {
        Sys_Error("NUM_FOR_EDICT: bad pointer");
    }
    return b;
}
