1 /*
2 Copyright (C) 1996-1997 Id Software, Inc.
3 
4 This program is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License
6 as published by the Free Software Foundation; either version 2
7 of the License, or (at your option) any later version.
8 
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12 
13 See the GNU General Public License for more details.
14 
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
18 
19 */
20 /*
21 This is a try to make the vm more generic, it is mainly based on the progs.h file.
22 For the license refer to progs.h.
23 
24 Generic means, less as possible hard-coded links with the other parts of the engine.
25 This means no edict_engineprivate struct usage, etc.
26 The code uses void pointers instead.
27 */
28 
29 #ifndef PROGSVM_H
30 #define PROGSVM_H
31 
32 #include "pr_comp.h"			// defs shared with qcc
33 #include "progdefs.h"			// generated by program cdefs
34 #include "clprogdefs.h"			// generated by program cdefs
35 
36 // forward declaration of clgecko_t
37 struct clgecko_s;
38 
39 typedef struct prvm_stack_s
40 {
41 	int				s;
42 	mfunction_t		*f;
43 	double			profile_acc;
44 	double			builtinsprofile_acc;
45 } prvm_stack_t;
46 
47 
48 typedef union prvm_eval_s
49 {
50 	string_t		string;
51 	float			_float;
52 	float			vector[3];
53 	func_t			function;
54 	int				ivector[3];
55 	int				_int;
56 	int				edict;
57 } prvm_eval_t;
58 
59 typedef struct prvm_required_field_s
60 {
61 	int type;
62 	const char *name;
63 } prvm_required_field_t;
64 
65 
66 // AK: I dont call it engine private cause it doesnt really belongs to the engine
67 //     it belongs to prvm.
68 typedef struct prvm_edict_private_s
69 {
70 	qboolean free;
71 	float freetime;
72 	int mark;
73 	const char *allocation_origin;
74 } prvm_edict_private_t;
75 
76 typedef struct prvm_edict_s
77 {
78 	// engine-private fields (stored in dynamically resized array)
79 	//edict_engineprivate_t *e;
80 	union
81 	{
82 		prvm_edict_private_t *required;
83 		void *vp;
84 		// FIXME: this server pointer really means world, not server
85 		// (it is used by both server qc and client qc, but not menu qc)
86 		edict_engineprivate_t *server;
87 		// add other private structs as you desire
88 		// new structs have to start with the elements of prvm_edit_private_t
89 		// e.g. a new struct has to either look like this:
90 		//	typedef struct server_edict_private_s {
91 		//		prvm_edict_private_t base;
92 		//		vec3_t moved_from;
93 		//      vec3_t moved_fromangles;
94 		//		... } server_edict_private_t;
95 		// or:
96 		//	typedef struct server_edict_private_s {
97 		//		qboolean free;
98 		//		float freetime;
99 		//		vec3_t moved_from;
100 		//      vec3_t moved_fromangles;
101 		//		... } server_edict_private_t;
102 		// However, the first one should be preferred.
103 	} priv;
104 	// QuakeC fields (stored in dynamically resized array)
105 	union
106 	{
107 		void *vp;
108 		entvars_t		*server;
109 		cl_entvars_t	*client;
110 	} fields;
111 } prvm_edict_t;
112 
113 #define PRVM_EDICTFIELDVALUE(ed, fieldoffset) (fieldoffset >= 0 ? (prvm_eval_t *)((int *)ed->fields.vp + fieldoffset) : NULL)
114 #define PRVM_GLOBALFIELDVALUE(fieldoffset) (fieldoffset >= 0 ? (prvm_eval_t *)((int *)prog->globals.generic + fieldoffset) : NULL)
115 
116 //============================================================================
117 #define PRVM_OP_STATE		1
118 
119 #define	PRVM_MAX_STACK_DEPTH		1024
120 #define	PRVM_LOCALSTACK_SIZE		16384
121 
122 #define PRVM_MAX_OPENFILES 256
123 #define PRVM_MAX_OPENSEARCHES 128
124 #define PRVM_MAX_GECKOINSTANCES 32
125 
126 typedef void (*prvm_builtin_t) (void);
127 
128 // NOTE: field offsets use -1 for NULL
129 typedef struct prvm_prog_fieldoffsets_s
130 {
131 	// server and client use a lot of similar fields, so this is combined
132 	int SendEntity; // ssqc
133 	int SendFlags; // ssqc
134 	int Version; // ssqc (legacy)
135 	int alpha; // ssqc / csqc
136 	int ammo_cells1; // ssqc - Dissolution of Eternity mission pack
137 	int ammo_lava_nails; // ssqc - Dissolution of Eternity mission pack
138 	int ammo_multi_rockets; // ssqc - Dissolution of Eternity mission pack
139 	int ammo_nails1; // ssqc - Dissolution of Eternity mission pack
140 	int ammo_plasma; // ssqc - Dissolution of Eternity mission pack
141 	int ammo_rockets1; // ssqc - Dissolution of Eternity mission pack
142 	int ammo_shells1; // ssqc - Dissolution of Eternity mission pack
143 	int angles; // common - used by changeyaw/changepitch
144 	int button3; // ssqc
145 	int button4; // ssqc
146 	int button5; // ssqc
147 	int button6; // ssqc
148 	int button7; // ssqc
149 	int button8; // ssqc
150 	int button9; // ssqc
151 	int button10; // ssqc
152 	int button11; // ssqc
153 	int button12; // ssqc
154 	int button13; // ssqc
155 	int button14; // ssqc
156 	int button15; // ssqc
157 	int button16; // ssqc
158 	int buttonchat; // ssqc
159 	int buttonuse; // ssqc
160 	int chain; // common - used by find builtins
161 	int classname; // common
162 	int clientcamera; // ssqc
163 	int clientcolors; // ssqc
164 	int clientstatus; // ssqc
165 	int color; // ssqc
166 	int colormod; // ssqc / csqc
167 	int contentstransition; // ssqc
168 	int cursor_active; // ssqc
169 	int cursor_screen; // ssqc
170 	int cursor_trace_endpos; // ssqc
171 	int cursor_trace_ent; // ssqc
172 	int cursor_trace_start; // ssqc
173 	int customizeentityforclient; // ssqc
174 	int dimension_hit; // ssqc / csqc
175 	int dimension_solid; // ssqc / csqc
176 	int disableclientprediction; // ssqc
177 	int dphitcontentsmask; // ssqc / csqc
178 	int drawonlytoclient; // ssqc
179 	int effects; // ssqc / csqc
180 	int exteriormodeltoclient; // ssqc
181 	int fatness; // ssqc / csqc
182 	int forceshader; // csqc
183 	int frame1time; // csqc
184 	int frame2; // csqc
185 	int frame2time; // csqc
186 	int frame3; // csqc
187 	int frame3time; // csqc
188 	int frame4; // csqc
189 	int frame4time; // csqc
190 	int frame; // common - used by OP_STATE
191 	int fullbright; // ssqc - Nehahra support
192 	int glow_color; // ssqc
193 	int glow_size; // ssqc
194 	int glow_trail; // ssqc
195 	int gravity; // ssqc
196 	int groundentity; // ssqc / csqc
197 	int hull; // ssqc / csqc
198 	int ideal_yaw; // ssqc / csqc
199 	int idealpitch; // ssqc / csqc
200 	int items2; // ssqc
201 	int lerpfrac3; // csqc
202 	int lerpfrac4; // csqc
203 	int lerpfrac; // csqc
204 	int light_lev; // ssqc
205 	int message; // csqc
206 	int modelflags; // ssqc
207 	int movement; // ssqc
208 	int movetypesteplandevent; // ssqc
209 	int netaddress; // ssqc
210 	int nextthink; // common - used by OP_STATE
211 	int nodrawtoclient; // ssqc
212 	int pflags; // ssqc
213 	int ping; // ssqc
214 	int pitch_speed; // ssqc / csqc
215 	int playermodel; // ssqc
216 	int playerskin; // ssqc
217 	int pmodel; // ssqc
218 	int punchvector; // ssqc
219 	int renderamt; // ssqc - HalfLife support
220 	int renderflags; // csqc
221 	int rendermode; // ssqc - HalfLife support
222 	int scale; // ssqc / csqc
223 	int shadertime; // csqc
224 	int style; // ssqc
225 	int tag_entity; // ssqc / csqc
226 	int tag_index; // ssqc / csqc
227 	int think; // common - used by OP_STATE
228 	int viewmodelforclient; // ssqc
229 	int viewzoom; // ssqc
230 	int yaw_speed; // ssqc / csqc
231 	int bouncefactor; // ssqc
232 	int bouncestop; // ssqc
233 }
234 prvm_prog_fieldoffsets_t;
235 
236 // NOTE: global offsets use -1 for NULL
237 typedef struct prvm_prog_globaloffsets_s
238 {
239 	// server and client use a lot of similar globals, so this is combined
240 	int SV_InitCmd; // ssqc
241 	int self; // common
242 	int time; // ssqc / csqc
243 	int v_forward; // ssqc / csqc
244 	int v_right; // ssqc / csqc
245 	int v_up; // ssqc / csqc
246 	int view_angles; // csqc
247 	int trace_allsolid; // ssqc / csqc
248 	int trace_startsolid; // ssqc / csqc
249 	int trace_fraction; // ssqc / csqc
250 	int trace_inwater; // ssqc / csqc
251 	int trace_inopen; // ssqc / csqc
252 	int trace_endpos; // ssqc / csqc
253 	int trace_plane_normal; // ssqc / csqc
254 	int trace_plane_dist; // ssqc / csqc
255 	int trace_ent; // ssqc / csqc
256 	int trace_networkentity; // csqc
257 	int trace_dphitcontents; // ssqc / csqc
258 	int trace_dphitq3surfaceflags; // ssqc / csqc
259 	int trace_dphittexturename; // ssqc / csqc
260 	int trace_dpstartcontents; // ssqc / csqc
261 	int intermission; // csqc
262 	int coop; // csqc
263 	int deathmatch; // csqc
264 	int dmg_take; // csqc
265 	int dmg_save; // csqc
266 	int dmg_origin; // csqc
267 	int sb_showscores; // csqc
268 	int drawfont; // csqc / menu
269 	int require_spawnfunc_prefix; // ssqc
270 	int worldstatus; // ssqc
271 	int servertime; // csqc
272 	int serverprevtime; // csqc
273 	int serverdeltatime; // csqc
274 	int gettaginfo_name; // ssqc / csqc
275 	int gettaginfo_parent; // ssqc / csqc
276 	int gettaginfo_offset; // ssqc / csqc
277 	int gettaginfo_forward; // ssqc / csqc
278 	int gettaginfo_right; // ssqc / csqc
279 	int gettaginfo_up; // ssqc / csqc
280 }
281 prvm_prog_globaloffsets_t;
282 
283 // these are initialized using PRVM_ED_FindFunction
284 // NOTE: function offsets use 0 for NULL
285 typedef struct prvm_prog_funcoffsets_s
286 {
287 	func_t CSQC_ConsoleCommand; // csqc
288 	func_t CSQC_Ent_Remove; // csqc
289 	func_t CSQC_Ent_Spawn; // csqc DP_CSQC_ENT_SPAWN extension (BlackHC - TODO: needs to be added to dpextensions.qc)
290 	func_t CSQC_Ent_Update; // csqc
291 	func_t CSQC_Event; // csqc [515]: engine call this for its own needs so csqc can do some things according to what engine it's running on.  example: to say about edicts increase, whatever...
292 	func_t CSQC_Event_Sound; // csqc : called by engine when an incoming sound packet arrives so CSQC can act on it
293 	func_t CSQC_Init; // csqc
294 	func_t CSQC_InputEvent; // csqc
295 	func_t CSQC_Parse_CenterPrint; // csqc
296 	func_t CSQC_Parse_Print; // csqc
297 	func_t CSQC_Parse_StuffCmd; // csqc
298 	func_t CSQC_Parse_TempEntity; // csqc [515]: very helpfull when you want to create your own particles/decals/etc for effects that already exist
299 	func_t CSQC_Shutdown; // csqc
300 	func_t CSQC_UpdateView; // csqc
301 	func_t Gecko_Query; // csqc, mqc
302 	func_t EndFrame; // ssqc
303 	func_t RestoreGame; // ssqc
304 	func_t SV_ChangeTeam; // ssqc
305 	func_t SV_ParseClientCommand; // ssqc
306 	func_t SV_PlayerPhysics; // ssqc
307 	func_t SV_OnEntityPreSpawnFunction; // ssqc
308 	func_t SV_OnEntityNoSpawnFunction; // ssqc
309 	func_t SV_OnEntityPostSpawnFunction; // ssqc
310 	func_t GameCommand; // any
311 	func_t SV_Shutdown; // ssqc
312 	func_t URI_Get_Callback; // any
313 	func_t SV_PausedTic; //ssqc
314 
315 	// menu qc only uses some functions, nothing else
316 	func_t m_draw; // mqc
317 	func_t m_init; // mqc
318 	func_t m_keydown; // mqc
319 	func_t m_keyup; // mqc
320 	func_t m_shutdown; // mqc
321 	func_t m_toggle; // mqc
322 }
323 prvm_prog_funcoffsets_t;
324 
325 typedef struct prvm_stringbuffer_s
326 {
327 	int max_strings;
328 	int num_strings;
329 	char **strings;
330 	const char *origin;
331 }
332 prvm_stringbuffer_t;
333 
334 // [INIT] variables flagged with this token can be initialized by 'you'
335 // NOTE: external code has to create and free the mempools but everything else is done by prvm !
336 typedef struct prvm_prog_s
337 {
338 	double              starttime;
339 	dprograms_t			*progs;
340 	mfunction_t			*functions;
341 	char				*strings;
342 	int					stringssize;
343 	ddef_t				*fielddefs;
344 	ddef_t				*globaldefs;
345 	dstatement_t		*statements;
346 	int					edict_size;			// in bytes
347 	int					edictareasize;		// LordHavoc: in bytes (for bound checking)
348 
349 	int					*statement_linenums; // NULL if not available
350 
351 	double				*statement_profile; // only incremented if prvm_statementprofiling is on
352 
353 	union {
354 		float *generic;
355 		globalvars_t *server;
356 		cl_globalvars_t *client;
357 	} globals;
358 
359 	int					maxknownstrings;
360 	int					numknownstrings;
361 	// this is updated whenever a string is removed or added
362 	// (simple optimization of the free string search)
363 	int					firstfreeknownstring;
364 	const char			**knownstrings;
365 	unsigned char		*knownstrings_freeable;
366 	const char          **knownstrings_origin;
367 	const char			***stringshash;
368 
369 	memexpandablearray_t	stringbuffersarray;
370 
371 	// all memory allocations related to this vm_prog (code, edicts, strings)
372 	mempool_t			*progs_mempool; // [INIT]
373 
374 	prvm_builtin_t		*builtins; // [INIT]
375 	int					numbuiltins; // [INIT]
376 
377 	int					argc;
378 
379 	int					trace;
380 	mfunction_t			*xfunction;
381 	int					xstatement;
382 
383 	// stacktrace writes into stack[MAX_STACK_DEPTH]
384 	// thus increase the array, so depth wont be overwritten
385 	prvm_stack_t		stack[PRVM_MAX_STACK_DEPTH+1];
386 	int					depth;
387 
388 	int					localstack[PRVM_LOCALSTACK_SIZE];
389 	int					localstack_used;
390 
391 	unsigned short		headercrc; // [INIT]
392 	unsigned short		headercrc2; // [INIT] alternate CRC for tenebrae progs.dat
393 
394 	unsigned short		filecrc;
395 
396 	//============================================================================
397 	// until this point everything also exists (with the pr_ prefix) in the old vm
398 
399 	qfile_t				*openfiles[PRVM_MAX_OPENFILES];
400 	const char *         openfiles_origin[PRVM_MAX_OPENFILES];
401 	fssearch_t			*opensearches[PRVM_MAX_OPENSEARCHES];
402 	const char *         opensearches_origin[PRVM_MAX_OPENSEARCHES];
403 	struct clgecko_s		*opengeckoinstances[PRVM_MAX_GECKOINSTANCES];
404 
405 	// copies of some vars that were former read from sv
406 	int					num_edicts;
407 	// number of edicts for which space has been (should be) allocated
408 	int					max_edicts; // [INIT]
409 	// used instead of the constant MAX_EDICTS
410 	int					limit_edicts; // [INIT]
411 
412 	// number of reserved edicts (allocated from 1)
413 	int					reserved_edicts; // [INIT]
414 
415 	prvm_edict_t		*edicts;
416 	void					*edictsfields;
417 	void					*edictprivate;
418 
419 	// size of the engine private struct
420 	int					edictprivate_size; // [INIT]
421 
422 	prvm_prog_fieldoffsets_t	fieldoffsets;
423 	prvm_prog_globaloffsets_t	globaloffsets;
424 	prvm_prog_funcoffsets_t		funcoffsets;
425 
426 	// allow writing to world entity fields, this is set by server init and
427 	// cleared before first server frame
428 	qboolean			allowworldwrites;
429 
430 	// name of the prog, e.g. "Server", "Client" or "Menu" (used for text output)
431 	char				*name; // [INIT]
432 
433 	// flag - used to store general flags like PRVM_GE_SELF, etc.
434 	int				flag;
435 
436 	char				*extensionstring; // [INIT]
437 
438 	qboolean			loadintoworld; // [INIT]
439 
440 	// used to indicate whether a prog is loaded
441 	qboolean			loaded;
442 	qboolean			leaktest_active;
443 
444 	// printed together with backtraces
445 	const char *statestring;
446 
447 //	prvm_builtin_mem_t  *mem_list;
448 
449 // now passed as parameter of PRVM_LoadProgs
450 //	char				**required_func;
451 //	int					numrequiredfunc;
452 
453 	//============================================================================
454 
455 	ddef_t				*self; // if self != 0 then there is a global self
456 
457 	//============================================================================
458 	// function pointers
459 
460 	void				(*begin_increase_edicts)(void); // [INIT] used by PRVM_MEM_Increase_Edicts
461 	void				(*end_increase_edicts)(void); // [INIT]
462 
463 	void				(*init_edict)(prvm_edict_t *edict); // [INIT] used by PRVM_ED_ClearEdict
464 	void				(*free_edict)(prvm_edict_t *ed); // [INIT] used by PRVM_ED_Free
465 
466 	void				(*count_edicts)(void); // [INIT] used by PRVM_ED_Count_f
467 
468 	qboolean			(*load_edict)(prvm_edict_t *ent); // [INIT] used by PRVM_ED_LoadFromFile
469 
470 	void				(*init_cmd)(void); // [INIT] used by PRVM_InitProg
471 	void				(*reset_cmd)(void); // [INIT] used by PRVM_ResetProg
472 
473 	void				(*error_cmd)(const char *format, ...) DP_FUNC_PRINTF(1); // [INIT]
474 } prvm_prog_t;
475 
476 extern prvm_prog_t * prog;
477 
478 #define PRVM_MAXPROGS 3
479 #define PRVM_SERVERPROG 0 // actually not used at the moment
480 #define PRVM_CLIENTPROG 1
481 #define PRVM_MENUPROG	2
482 
483 extern prvm_prog_t prvm_prog_list[PRVM_MAXPROGS];
484 
485 //============================================================================
486 // prvm_cmds part
487 
488 extern prvm_builtin_t vm_sv_builtins[];
489 extern prvm_builtin_t vm_cl_builtins[];
490 extern prvm_builtin_t vm_m_builtins[];
491 
492 extern const int vm_sv_numbuiltins;
493 extern const int vm_cl_numbuiltins;
494 extern const int vm_m_numbuiltins;
495 
496 extern char * vm_sv_extensions; // client also uses this
497 extern char * vm_m_extensions;
498 
499 void VM_SV_Cmd_Init(void);
500 void VM_SV_Cmd_Reset(void);
501 
502 void VM_CL_Cmd_Init(void);
503 void VM_CL_Cmd_Reset(void);
504 
505 void VM_M_Cmd_Init(void);
506 void VM_M_Cmd_Reset(void);
507 
508 void VM_Cmd_Init(void);
509 void VM_Cmd_Reset(void);
510 //============================================================================
511 
512 void PRVM_Init (void);
513 
514 void PRVM_ExecuteProgram (func_t fnum, const char *errormessage);
515 
516 #define PRVM_Alloc(buffersize) _PRVM_Alloc(buffersize, __FILE__, __LINE__)
517 #define PRVM_Free(buffer) _PRVM_Free(buffer, __FILE__, __LINE__)
518 #define PRVM_FreeAll() _PRVM_FreeAll(__FILE__, __LINE__)
519 void *_PRVM_Alloc (size_t buffersize, const char *filename, int fileline);
520 void _PRVM_Free (void *buffer, const char *filename, int fileline);
521 void _PRVM_FreeAll (const char *filename, int fileline);
522 
523 void PRVM_Profile (int maxfunctions, int mininstructions, int sortby);
524 void PRVM_Profile_f (void);
525 void PRVM_ChildProfile_f (void);
526 void PRVM_CallProfile_f (void);
527 void PRVM_PrintFunction_f (void);
528 
529 void PRVM_PrintState(void);
530 void PRVM_CrashAll (void);
531 void PRVM_Crash (void);
532 void PRVM_ShortStackTrace(char *buf, size_t bufsize);
533 const char *PRVM_AllocationOrigin(void);
534 
535 ddef_t *PRVM_ED_FindField(const char *name);
536 ddef_t *PRVM_ED_FindGlobal(const char *name);
537 mfunction_t *PRVM_ED_FindFunction(const char *name);
538 
539 int PRVM_ED_FindFieldOffset(const char *name);
540 int PRVM_ED_FindGlobalOffset(const char *name);
541 func_t PRVM_ED_FindFunctionOffset(const char *name);
542 #define PRVM_ED_FindFieldOffset_FromStruct(st, field) prog->fieldoffsets . field = ((int *)(&((st *)NULL)-> field ) - ((int *)NULL))
543 #define PRVM_ED_FindGlobalOffset_FromStruct(st, field) prog->globaloffsets . field = ((int *)(&((st *)NULL)-> field ) - ((int *)NULL))
544 
545 void PRVM_MEM_IncreaseEdicts(void);
546 
547 qboolean PRVM_ED_CanAlloc(prvm_edict_t *e);
548 prvm_edict_t *PRVM_ED_Alloc (void);
549 void PRVM_ED_Free (prvm_edict_t *ed);
550 void PRVM_ED_ClearEdict (prvm_edict_t *e);
551 
552 void PRVM_PrintFunctionStatements (const char *name);
553 void PRVM_ED_Print(prvm_edict_t *ed, const char *wildcard_fieldname);
554 void PRVM_ED_Write (qfile_t *f, prvm_edict_t *ed);
555 const char *PRVM_ED_ParseEdict (const char *data, prvm_edict_t *ent);
556 
557 void PRVM_ED_WriteGlobals (qfile_t *f);
558 void PRVM_ED_ParseGlobals (const char *data);
559 
560 void PRVM_ED_LoadFromFile (const char *data);
561 
562 unsigned int PRVM_EDICT_NUM_ERROR(unsigned int n, char *filename, int fileline);
563 #define	PRVM_EDICT(n) (((unsigned)(n) < (unsigned int)prog->max_edicts) ? (unsigned int)(n) : PRVM_EDICT_NUM_ERROR((unsigned int)(n), __FILE__, __LINE__))
564 #define	PRVM_EDICT_NUM(n) (prog->edicts + PRVM_EDICT(n))
565 
566 //int NUM_FOR_EDICT_ERROR(prvm_edict_t *e);
567 #define PRVM_NUM_FOR_EDICT(e) ((int)((prvm_edict_t *)(e) - prog->edicts))
568 //int PRVM_NUM_FOR_EDICT(prvm_edict_t *e);
569 
570 #define	PRVM_NEXT_EDICT(e) ((e) + 1)
571 
572 #define PRVM_EDICT_TO_PROG(e) (PRVM_NUM_FOR_EDICT(e))
573 //int PRVM_EDICT_TO_PROG(prvm_edict_t *e);
574 #define PRVM_PROG_TO_EDICT(n) (PRVM_EDICT_NUM(n))
575 //prvm_edict_t *PRVM_PROG_TO_EDICT(int n);
576 
577 //============================================================================
578 
579 #define	PRVM_G_FLOAT(o) (prog->globals.generic[o])
580 #define	PRVM_G_INT(o) (*(int *)&prog->globals.generic[o])
581 #define	PRVM_G_EDICT(o) (PRVM_PROG_TO_EDICT(*(int *)&prog->globals.generic[o]))
582 #define PRVM_G_EDICTNUM(o) PRVM_NUM_FOR_EDICT(PRVM_G_EDICT(o))
583 #define	PRVM_G_VECTOR(o) (&prog->globals.generic[o])
584 #define	PRVM_G_STRING(o) (PRVM_GetString(*(string_t *)&prog->globals.generic[o]))
585 //#define	PRVM_G_FUNCTION(o) (*(func_t *)&prog->globals.generic[o])
586 
587 // FIXME: make these go away?
588 #define	PRVM_E_FLOAT(e,o) (((float*)e->fields.vp)[o])
589 #define	PRVM_E_INT(e,o) (((int*)e->fields.vp)[o])
590 //#define	PRVM_E_VECTOR(e,o) (&((float*)e->fields.vp)[o])
591 #define	PRVM_E_STRING(e,o) (PRVM_GetString(*(string_t *)&((float*)e->fields.vp)[o]))
592 
593 extern	int		prvm_type_size[8]; // for consistency : I think a goal of this sub-project is to
594 // make the new vm mostly independent from the old one, thus if it's necessary, I copy everything
595 
596 void PRVM_Init_Exec(void);
597 
598 void PRVM_ED_PrintEdicts_f (void);
599 void PRVM_ED_PrintNum (int ent, const char *wildcard_fieldname);
600 
601 const char *PRVM_GetString(int num);
602 int PRVM_SetEngineString(const char *s);
603 int PRVM_SetTempString(const char *s);
604 int PRVM_AllocString(size_t bufferlength, char **pointer);
605 void PRVM_FreeString(int num);
606 
607 //============================================================================
608 
609 // used as replacement for a prog stack
610 //#define PRVM_DEBUGPRSTACK
611 
612 #ifdef PRVM_DEBUGPRSTACK
613 #define PRVM_Begin  if(prog != 0) Con_Printf("prog not 0(prog = %i) in file: %s line: %i!\n", PRVM_GetProgNr(), __FILE__, __LINE__)
614 #define PRVM_End	prog = 0
615 #else
616 #define PRVM_Begin
617 #define PRVM_End	prog = 0
618 #endif
619 
620 //#define PRVM_SAFENAME
621 #ifndef PRVM_SAFENAME
622 #	define PRVM_NAME	(prog->name)
623 #else
624 #	define PRVM_NAME	(prog->name ? prog->name : "Unknown prog name")
625 #endif
626 
627 // helper macro to make function pointer calls easier
628 #define PRVM_GCALL(func)	if(prog->func) prog->func
629 
630 #define PRVM_ERROR		prog->error_cmd
631 
632 // other prog handling functions
633 qboolean PRVM_SetProgFromString(const char *str);
634 void PRVM_SetProg(int prognr);
635 
636 /*
637 Initializing a vm:
638 Call InitProg with the num
639 Set up the fields marked with [INIT] in the prog struct
640 Load a program with LoadProgs
641 */
642 void PRVM_InitProg(int prognr);
643 // LoadProgs expects to be called right after InitProg
644 void PRVM_LoadProgs (const char *filename, int numrequiredfunc, char **required_func, int numrequiredfields, prvm_required_field_t *required_field, int numrequiredglobals, char **required_global);
645 void PRVM_ResetProg(void);
646 
647 qboolean PRVM_ProgLoaded(int prognr);
648 
649 int	PRVM_GetProgNr(void);
650 
651 void VM_Warning(const char *fmt, ...) DP_FUNC_PRINTF(1);
652 
653 // TODO: fill in the params
654 //void PRVM_Create();
655 
656 #endif
657