Quake!

This ports id Software's Quake to run on the SDL plugin runtime. The
source code originated from id under the GPLv2 license. I used
https://github.com/ahefner/sdlquake as the base of my port.

Performance is, unsurprisingly, not on par with what you're probably
used to on PC. I average about 10FPS on ipod6g, but it's still
playable.

Sound works well enough, but in-game music is not supported. I've
written ARM assembly routines for the inner sound loop. Make sure you
turn the "brightness" all the way down, or colors will look funky.

To run, extract Quake's data files to /.rockbox/quake. Have fun!

Change-Id: I4285036e967d7f0722802d43cf2096c808ca5799

1 files changed, 1113 insertions, 0 deletions

diff --git a/apps/plugins/sdl/progs/quake/pr_edict.c b/apps/plugins/sdl/progs/quake/pr_edict.c
new file mode 100644
index 0000000000..2f0e8eccb3
--- /dev/null
+++ b/apps/plugins/sdl/progs/quake/pr_edict.c
@@ -0,0 +1,1113 @@
+/*
+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);
+
+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, ""}};
+
+/*
+=================
+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;
+}
+
+/*
+============
+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, "%f", val->_float);
+                break;
+        case ev_vector:
+                sprintf (line, "%f %f %f", val->vector[0], val->vector[1], val->vector[2]);
+                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);
+        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);
+        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;
+        
+                fprintf (f,"\"%s\" ",name);
+                fprintf (f,"\"%s\"\n", PR_UglyValueString(d->type, (eval_t *)v));               
+        }
+
+        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;                
+                fprintf (f,"\"%s\" ", name);
+                fprintf (f,"\"%s\"\n", PR_UglyValueString(type, (eval_t *)&pr_globals[def->ofs]));              
+        }
+        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);
+                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);
+                        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];
+        int                     n;
+
+        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;
+
+// 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)
+                {
+                        Con_Printf ("'%s' is not a field\n", keyname);
+                        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;
+        
+// 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)
+                {
+                        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);
+        }       
+
+        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;
+
+        CRC_Init (&pr_crc);
+
+        //printf("loadprogs 1");
+
+        progs = (dprograms_t *)COM_LoadHunkFile ("progs.dat");
+        //printf("loadprogs 2");
+        
+        if (!progs)
+                Sys_Error ("PR_LoadProgs: couldn't load progs.dat");
+        Con_DPrintf ("Programs occupy %iK.\n", com_filesize/1024);
+        //printf("loadprogs 3");
+
+        for (i=0 ; i<com_filesize ; i++)
+                CRC_ProcessByte (&pr_crc, ((byte *)progs)[i]);
+
+        //printf("loadprogs 4");
+// 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");
+        //printf("loadprogs 5");
+
+        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);
+        }
+
+        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)
+                        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]);
+}
+
+
+/*
+===============
+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);
+        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);
+}
+
+
+
+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;
+}