2 Copyright (C) 1996-1997 Id Software, Inc.
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.
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.
13 See the GNU General Public License for more details.
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.
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.
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.
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
36 // forward declaration of clgecko_t
39 typedef struct prvm_stack_s
46 typedef union prvm_eval_s
57 typedef struct prvm_required_field_s
61 } prvm_required_field_t;
64 // AK: I dont call it engine private cause it doesnt really belongs to the engine
65 // it belongs to prvm.
66 typedef struct prvm_edict_private_s
71 const char *allocation_origin;
72 } prvm_edict_private_t;
74 typedef struct prvm_edict_s
76 // engine-private fields (stored in dynamically resized array)
77 //edict_engineprivate_t *e;
80 prvm_edict_private_t *required;
82 // FIXME: this server pointer really means world, not server
83 // (it is used by both server qc and client qc, but not menu qc)
84 edict_engineprivate_t *server;
85 // add other private structs as you desire
86 // new structs have to start with the elements of prvm_edit_private_t
87 // e.g. a new struct has to either look like this:
88 // typedef struct server_edict_private_s {
89 // prvm_edict_private_t base;
91 // vec3_t moved_fromangles;
92 // ... } server_edict_private_t;
94 // typedef struct server_edict_private_s {
98 // vec3_t moved_fromangles;
99 // ... } server_edict_private_t;
100 // However, the first one should be preferred.
102 // QuakeC fields (stored in dynamically resized array)
107 cl_entvars_t *client;
111 #define PRVM_EDICTFIELDVALUE(ed, fieldoffset) (fieldoffset >= 0 ? (prvm_eval_t *)((int *)ed->fields.vp + fieldoffset) : NULL)
112 #define PRVM_GLOBALFIELDVALUE(fieldoffset) (fieldoffset >= 0 ? (prvm_eval_t *)((int *)prog->globals.generic + fieldoffset) : NULL)
114 //============================================================================
115 #define PRVM_OP_STATE 1
117 #define PRVM_MAX_STACK_DEPTH 1024
118 #define PRVM_LOCALSTACK_SIZE 16384
120 #define PRVM_MAX_OPENFILES 256
121 #define PRVM_MAX_OPENSEARCHES 128
122 #define PRVM_MAX_GECKOINSTANCES 32
124 typedef void (*prvm_builtin_t) (void);
126 // NOTE: field offsets use -1 for NULL
127 typedef struct prvm_prog_fieldoffsets_s
129 // server and client use a lot of similar fields, so this is combined
130 int SendEntity; // ssqc
131 int SendFlags; // ssqc
132 int Version; // ssqc (legacy)
133 int alpha; // ssqc / csqc
134 int ammo_cells1; // ssqc - Dissolution of Eternity mission pack
135 int ammo_lava_nails; // ssqc - Dissolution of Eternity mission pack
136 int ammo_multi_rockets; // ssqc - Dissolution of Eternity mission pack
137 int ammo_nails1; // ssqc - Dissolution of Eternity mission pack
138 int ammo_plasma; // ssqc - Dissolution of Eternity mission pack
139 int ammo_rockets1; // ssqc - Dissolution of Eternity mission pack
140 int ammo_shells1; // ssqc - Dissolution of Eternity mission pack
141 int angles; // common - used by changeyaw/changepitch
149 int button10; // ssqc
150 int button11; // ssqc
151 int button12; // ssqc
152 int button13; // ssqc
153 int button14; // ssqc
154 int button15; // ssqc
155 int button16; // ssqc
156 int buttonchat; // ssqc
157 int buttonuse; // ssqc
158 int chain; // common - used by find builtins
159 int classname; // common
160 int clientcamera; // ssqc
161 int clientcolors; // ssqc
162 int clientstatus; // ssqc
164 int colormod; // ssqc / csqc
165 int contentstransition; // ssqc
166 int cursor_active; // ssqc
167 int cursor_screen; // ssqc
168 int cursor_trace_endpos; // ssqc
169 int cursor_trace_ent; // ssqc
170 int cursor_trace_start; // ssqc
171 int customizeentityforclient; // ssqc
172 int dimension_hit; // ssqc / csqc
173 int dimension_solid; // ssqc / csqc
174 int disableclientprediction; // ssqc
175 int dphitcontentsmask; // ssqc / csqc
176 int drawonlytoclient; // ssqc
177 int effects; // ssqc / csqc
178 int exteriormodeltoclient; // ssqc
179 int fatness; // ssqc / csqc
180 int forceshader; // csqc
181 int frame1time; // csqc
183 int frame2time; // csqc
185 int frame3time; // csqc
187 int frame4time; // csqc
188 int frame; // common - used by OP_STATE
189 int fullbright; // ssqc - Nehahra support
190 int glow_color; // ssqc
191 int glow_size; // ssqc
192 int glow_trail; // ssqc
194 int groundentity; // ssqc / csqc
195 int hull; // ssqc / csqc
196 int ideal_yaw; // ssqc / csqc
197 int idealpitch; // ssqc / csqc
199 int lerpfrac3; // csqc
200 int lerpfrac4; // csqc
201 int lerpfrac; // csqc
202 int light_lev; // ssqc
204 int modelflags; // ssqc
205 int movement; // ssqc
206 int movetypesteplandevent; // ssqc
207 int netaddress; // ssqc
208 int nextthink; // common - used by OP_STATE
209 int nodrawtoclient; // ssqc
212 int pitch_speed; // ssqc / csqc
213 int playermodel; // ssqc
214 int playerskin; // ssqc
216 int punchvector; // ssqc
217 int renderamt; // ssqc - HalfLife support
218 int renderflags; // csqc
219 int rendermode; // ssqc - HalfLife support
220 int scale; // ssqc / csqc
221 int shadertime; // csqc
223 int tag_entity; // ssqc / csqc
224 int tag_index; // ssqc / csqc
225 int think; // common - used by OP_STATE
226 int viewmodelforclient; // ssqc
227 int viewzoom; // ssqc
228 int yaw_speed; // ssqc / csqc
229 int bouncefactor; // ssqc
230 int bouncestop; // ssqc
232 prvm_prog_fieldoffsets_t;
234 // NOTE: global offsets use -1 for NULL
235 typedef struct prvm_prog_globaloffsets_s
237 // server and client use a lot of similar globals, so this is combined
238 int SV_InitCmd; // ssqc
240 int time; // ssqc / csqc
241 int v_forward; // ssqc / csqc
242 int v_right; // ssqc / csqc
243 int v_up; // ssqc / csqc
244 int view_angles; // csqc
245 int trace_allsolid; // ssqc / csqc
246 int trace_startsolid; // ssqc / csqc
247 int trace_fraction; // ssqc / csqc
248 int trace_inwater; // ssqc / csqc
249 int trace_inopen; // ssqc / csqc
250 int trace_endpos; // ssqc / csqc
251 int trace_plane_normal; // ssqc / csqc
252 int trace_plane_dist; // ssqc / csqc
253 int trace_ent; // ssqc / csqc
254 int trace_networkentity; // csqc
255 int trace_dphitcontents; // ssqc / csqc
256 int trace_dphitq3surfaceflags; // ssqc / csqc
257 int trace_dphittexturename; // ssqc / csqc
258 int trace_dpstartcontents; // ssqc / csqc
259 int intermission; // csqc
261 int deathmatch; // csqc
262 int dmg_take; // csqc
263 int dmg_save; // csqc
264 int dmg_origin; // csqc
265 int sb_showscores; // csqc
266 int drawfont; // csqc / menu
267 int require_spawnfunc_prefix; // ssqc
268 int worldstatus; // ssqc
269 int servertime; // csqc
270 int serverprevtime; // csqc
271 int serverdeltatime; // csqc
272 int gettaginfo_name; // ssqc / csqc
273 int gettaginfo_parent; // ssqc / csqc
274 int gettaginfo_offset; // ssqc / csqc
275 int gettaginfo_forward; // ssqc / csqc
276 int gettaginfo_right; // ssqc / csqc
277 int gettaginfo_up; // ssqc / csqc
279 prvm_prog_globaloffsets_t;
281 // these are initialized using PRVM_ED_FindFunction
282 // NOTE: function offsets use 0 for NULL
283 typedef struct prvm_prog_funcoffsets_s
285 func_t CSQC_ConsoleCommand; // csqc
286 func_t CSQC_Ent_Remove; // csqc
287 func_t CSQC_Ent_Spawn; // csqc DP_CSQC_ENT_SPAWN extension (BlackHC - TODO: needs to be added to dpextensions.qc)
288 func_t CSQC_Ent_Update; // csqc
289 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...
290 func_t CSQC_Event_Sound; // csqc : called by engine when an incoming sound packet arrives so CSQC can act on it
291 func_t CSQC_Init; // csqc
292 func_t CSQC_InputEvent; // csqc
293 func_t CSQC_Parse_CenterPrint; // csqc
294 func_t CSQC_Parse_Print; // csqc
295 func_t CSQC_Parse_StuffCmd; // csqc
296 func_t CSQC_Parse_TempEntity; // csqc [515]: very helpfull when you want to create your own particles/decals/etc for effects that already exist
297 func_t CSQC_Shutdown; // csqc
298 func_t CSQC_UpdateView; // csqc
299 func_t Gecko_Query; // csqc, mqc
300 func_t EndFrame; // ssqc
301 func_t RestoreGame; // ssqc
302 func_t SV_ChangeTeam; // ssqc
303 func_t SV_ParseClientCommand; // ssqc
304 func_t SV_PlayerPhysics; // ssqc
305 func_t SV_OnEntityPreSpawnFunction; // ssqc
306 func_t SV_OnEntityNoSpawnFunction; // ssqc
307 func_t SV_OnEntityPostSpawnFunction; // ssqc
308 func_t GameCommand; // any
309 func_t SV_Shutdown; // ssqc
310 func_t URI_Get_Callback; // any
311 func_t SV_PausedTic; //ssqc
313 // menu qc only uses some functions, nothing else
314 func_t m_draw; // mqc
315 func_t m_init; // mqc
316 func_t m_keydown; // mqc
317 func_t m_keyup; // mqc
318 func_t m_shutdown; // mqc
319 func_t m_toggle; // mqc
321 prvm_prog_funcoffsets_t;
323 typedef struct prvm_stringbuffer_s
332 // [INIT] variables flagged with this token can be initialized by 'you'
333 // NOTE: external code has to create and free the mempools but everything else is done by prvm !
334 typedef struct prvm_prog_s
338 mfunction_t *functions;
343 dstatement_t *statements;
344 int edict_size; // in bytes
345 int edictareasize; // LordHavoc: in bytes (for bound checking)
347 int *statement_linenums; // NULL if not available
349 double *statement_profile; // only incremented if prvm_statementprofiling is on
353 globalvars_t *server;
354 cl_globalvars_t *client;
359 // this is updated whenever a string is removed or added
360 // (simple optimization of the free string search)
361 int firstfreeknownstring;
362 const char **knownstrings;
363 unsigned char *knownstrings_freeable;
364 const char **knownstrings_origin;
365 const char ***stringshash;
367 memexpandablearray_t stringbuffersarray;
369 // all memory allocations related to this vm_prog (code, edicts, strings)
370 mempool_t *progs_mempool; // [INIT]
372 prvm_builtin_t *builtins; // [INIT]
373 int numbuiltins; // [INIT]
378 mfunction_t *xfunction;
381 // stacktrace writes into stack[MAX_STACK_DEPTH]
382 // thus increase the array, so depth wont be overwritten
383 prvm_stack_t stack[PRVM_MAX_STACK_DEPTH+1];
386 int localstack[PRVM_LOCALSTACK_SIZE];
389 unsigned short headercrc; // [INIT]
390 unsigned short headercrc2; // [INIT] alternate CRC for tenebrae progs.dat
392 unsigned short filecrc;
394 //============================================================================
395 // until this point everything also exists (with the pr_ prefix) in the old vm
397 qfile_t *openfiles[PRVM_MAX_OPENFILES];
398 const char * openfiles_origin[PRVM_MAX_OPENFILES];
399 fssearch_t *opensearches[PRVM_MAX_OPENSEARCHES];
400 const char * opensearches_origin[PRVM_MAX_OPENSEARCHES];
401 struct clgecko_s *opengeckoinstances[PRVM_MAX_GECKOINSTANCES];
403 // copies of some vars that were former read from sv
405 // number of edicts for which space has been (should be) allocated
406 int max_edicts; // [INIT]
407 // used instead of the constant MAX_EDICTS
408 int limit_edicts; // [INIT]
410 // number of reserved edicts (allocated from 1)
411 int reserved_edicts; // [INIT]
413 prvm_edict_t *edicts;
417 // size of the engine private struct
418 int edictprivate_size; // [INIT]
420 prvm_prog_fieldoffsets_t fieldoffsets;
421 prvm_prog_globaloffsets_t globaloffsets;
422 prvm_prog_funcoffsets_t funcoffsets;
424 // allow writing to world entity fields, this is set by server init and
425 // cleared before first server frame
426 qboolean allowworldwrites;
428 // name of the prog, e.g. "Server", "Client" or "Menu" (used for text output)
429 char *name; // [INIT]
431 // flag - used to store general flags like PRVM_GE_SELF, etc.
434 char *extensionstring; // [INIT]
436 qboolean loadintoworld; // [INIT]
438 // used to indicate whether a prog is loaded
440 qboolean leaktest_active;
442 // printed together with backtraces
443 const char *statestring;
445 // prvm_builtin_mem_t *mem_list;
447 // now passed as parameter of PRVM_LoadProgs
448 // char **required_func;
449 // int numrequiredfunc;
451 //============================================================================
453 ddef_t *self; // if self != 0 then there is a global self
455 //============================================================================
458 void (*begin_increase_edicts)(void); // [INIT] used by PRVM_MEM_Increase_Edicts
459 void (*end_increase_edicts)(void); // [INIT]
461 void (*init_edict)(prvm_edict_t *edict); // [INIT] used by PRVM_ED_ClearEdict
462 void (*free_edict)(prvm_edict_t *ed); // [INIT] used by PRVM_ED_Free
464 void (*count_edicts)(void); // [INIT] used by PRVM_ED_Count_f
466 qboolean (*load_edict)(prvm_edict_t *ent); // [INIT] used by PRVM_ED_LoadFromFile
468 void (*init_cmd)(void); // [INIT] used by PRVM_InitProg
469 void (*reset_cmd)(void); // [INIT] used by PRVM_ResetProg
471 void (*error_cmd)(const char *format, ...) DP_FUNC_PRINTF(1); // [INIT]
474 extern prvm_prog_t * prog;
476 #define PRVM_MAXPROGS 3
477 #define PRVM_SERVERPROG 0 // actually not used at the moment
478 #define PRVM_CLIENTPROG 1
479 #define PRVM_MENUPROG 2
481 extern prvm_prog_t prvm_prog_list[PRVM_MAXPROGS];
483 //============================================================================
486 extern prvm_builtin_t vm_sv_builtins[];
487 extern prvm_builtin_t vm_cl_builtins[];
488 extern prvm_builtin_t vm_m_builtins[];
490 extern const int vm_sv_numbuiltins;
491 extern const int vm_cl_numbuiltins;
492 extern const int vm_m_numbuiltins;
494 extern char * vm_sv_extensions; // client also uses this
495 extern char * vm_m_extensions;
497 void VM_SV_Cmd_Init(void);
498 void VM_SV_Cmd_Reset(void);
500 void VM_CL_Cmd_Init(void);
501 void VM_CL_Cmd_Reset(void);
503 void VM_M_Cmd_Init(void);
504 void VM_M_Cmd_Reset(void);
506 void VM_Cmd_Init(void);
507 void VM_Cmd_Reset(void);
508 //============================================================================
510 void PRVM_Init (void);
512 void PRVM_ExecuteProgram (func_t fnum, const char *errormessage);
514 #define PRVM_Alloc(buffersize) _PRVM_Alloc(buffersize, __FILE__, __LINE__)
515 #define PRVM_Free(buffer) _PRVM_Free(buffer, __FILE__, __LINE__)
516 #define PRVM_FreeAll() _PRVM_FreeAll(__FILE__, __LINE__)
517 void *_PRVM_Alloc (size_t buffersize, const char *filename, int fileline);
518 void _PRVM_Free (void *buffer, const char *filename, int fileline);
519 void _PRVM_FreeAll (const char *filename, int fileline);
521 void PRVM_Profile (int maxfunctions, int mininstructions);
522 void PRVM_Profile_f (void);
523 void PRVM_CallProfile_f (void);
524 void PRVM_PrintFunction_f (void);
526 void PRVM_PrintState(void);
527 void PRVM_CrashAll (void);
528 void PRVM_Crash (void);
529 void PRVM_ShortStackTrace(char *buf, size_t bufsize);
530 const char *PRVM_AllocationOrigin(void);
532 ddef_t *PRVM_ED_FindField(const char *name);
533 ddef_t *PRVM_ED_FindGlobal(const char *name);
534 mfunction_t *PRVM_ED_FindFunction(const char *name);
536 int PRVM_ED_FindFieldOffset(const char *name);
537 int PRVM_ED_FindGlobalOffset(const char *name);
538 func_t PRVM_ED_FindFunctionOffset(const char *name);
539 #define PRVM_ED_FindFieldOffset_FromStruct(st, field) prog->fieldoffsets . field = ((int *)(&((st *)NULL)-> field ) - ((int *)NULL))
540 #define PRVM_ED_FindGlobalOffset_FromStruct(st, field) prog->globaloffsets . field = ((int *)(&((st *)NULL)-> field ) - ((int *)NULL))
542 void PRVM_MEM_IncreaseEdicts(void);
544 qboolean PRVM_ED_CanAlloc(prvm_edict_t *e);
545 prvm_edict_t *PRVM_ED_Alloc (void);
546 void PRVM_ED_Free (prvm_edict_t *ed);
547 void PRVM_ED_ClearEdict (prvm_edict_t *e);
549 void PRVM_PrintFunctionStatements (const char *name);
550 void PRVM_ED_Print(prvm_edict_t *ed, const char *wildcard_fieldname);
551 void PRVM_ED_Write (qfile_t *f, prvm_edict_t *ed);
552 const char *PRVM_ED_ParseEdict (const char *data, prvm_edict_t *ent);
554 void PRVM_ED_WriteGlobals (qfile_t *f);
555 void PRVM_ED_ParseGlobals (const char *data);
557 void PRVM_ED_LoadFromFile (const char *data);
559 unsigned int PRVM_EDICT_NUM_ERROR(unsigned int n, char *filename, int fileline);
560 #define PRVM_EDICT(n) (((unsigned)(n) < (unsigned int)prog->max_edicts) ? (unsigned int)(n) : PRVM_EDICT_NUM_ERROR((unsigned int)(n), __FILE__, __LINE__))
561 #define PRVM_EDICT_NUM(n) (prog->edicts + PRVM_EDICT(n))
563 //int NUM_FOR_EDICT_ERROR(prvm_edict_t *e);
564 #define PRVM_NUM_FOR_EDICT(e) ((int)((prvm_edict_t *)(e) - prog->edicts))
565 //int PRVM_NUM_FOR_EDICT(prvm_edict_t *e);
567 #define PRVM_NEXT_EDICT(e) ((e) + 1)
569 #define PRVM_EDICT_TO_PROG(e) (PRVM_NUM_FOR_EDICT(e))
570 //int PRVM_EDICT_TO_PROG(prvm_edict_t *e);
571 #define PRVM_PROG_TO_EDICT(n) (PRVM_EDICT_NUM(n))
572 //prvm_edict_t *PRVM_PROG_TO_EDICT(int n);
574 //============================================================================
576 #define PRVM_G_FLOAT(o) (prog->globals.generic[o])
577 #define PRVM_G_INT(o) (*(int *)&prog->globals.generic[o])
578 #define PRVM_G_EDICT(o) (PRVM_PROG_TO_EDICT(*(int *)&prog->globals.generic[o]))
579 #define PRVM_G_EDICTNUM(o) PRVM_NUM_FOR_EDICT(PRVM_G_EDICT(o))
580 #define PRVM_G_VECTOR(o) (&prog->globals.generic[o])
581 #define PRVM_G_STRING(o) (PRVM_GetString(*(string_t *)&prog->globals.generic[o]))
582 //#define PRVM_G_FUNCTION(o) (*(func_t *)&prog->globals.generic[o])
584 // FIXME: make these go away?
585 #define PRVM_E_FLOAT(e,o) (((float*)e->fields.vp)[o])
586 #define PRVM_E_INT(e,o) (((int*)e->fields.vp)[o])
587 //#define PRVM_E_VECTOR(e,o) (&((float*)e->fields.vp)[o])
588 #define PRVM_E_STRING(e,o) (PRVM_GetString(*(string_t *)&((float*)e->fields.vp)[o]))
590 extern int prvm_type_size[8]; // for consistency : I think a goal of this sub-project is to
591 // make the new vm mostly independent from the old one, thus if it's necessary, I copy everything
593 void PRVM_Init_Exec(void);
595 void PRVM_ED_PrintEdicts_f (void);
596 void PRVM_ED_PrintNum (int ent, const char *wildcard_fieldname);
598 const char *PRVM_GetString(int num);
599 int PRVM_SetEngineString(const char *s);
600 int PRVM_SetTempString(const char *s);
601 int PRVM_AllocString(size_t bufferlength, char **pointer);
602 void PRVM_FreeString(int num);
604 //============================================================================
606 // used as replacement for a prog stack
607 //#define PRVM_DEBUGPRSTACK
609 #ifdef PRVM_DEBUGPRSTACK
610 #define PRVM_Begin if(prog != 0) Con_Printf("prog not 0(prog = %i) in file: %s line: %i!\n", PRVM_GetProgNr(), __FILE__, __LINE__)
611 #define PRVM_End prog = 0
614 #define PRVM_End prog = 0
617 //#define PRVM_SAFENAME
618 #ifndef PRVM_SAFENAME
619 # define PRVM_NAME (prog->name)
621 # define PRVM_NAME (prog->name ? prog->name : "Unknown prog name")
624 // helper macro to make function pointer calls easier
625 #define PRVM_GCALL(func) if(prog->func) prog->func
627 #define PRVM_ERROR prog->error_cmd
629 // other prog handling functions
630 qboolean PRVM_SetProgFromString(const char *str);
631 void PRVM_SetProg(int prognr);
635 Call InitProg with the num
636 Set up the fields marked with [INIT] in the prog struct
637 Load a program with LoadProgs
639 void PRVM_InitProg(int prognr);
640 // LoadProgs expects to be called right after InitProg
641 void PRVM_LoadProgs (const char *filename, int numrequiredfunc, char **required_func, int numrequiredfields, prvm_required_field_t *required_field, int numrequiredglobals, char **required_global);
642 void PRVM_ResetProg(void);
644 qboolean PRVM_ProgLoaded(int prognr);
646 int PRVM_GetProgNr(void);
648 void VM_Warning(const char *fmt, ...) DP_FUNC_PRINTF(1);
650 // TODO: fill in the params
651 //void PRVM_Create();