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
37 // forward declaration of clgecko_t
41 typedef struct prvm_stack_s
48 typedef union prvm_eval_s
59 typedef struct prvm_required_field_s
63 } prvm_required_field_t;
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
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
123 #define PRVM_MAX_GECKOINSTANCES 32
126 typedef void (*prvm_builtin_t) (void);
128 // NOTE: field offsets use -1 for NULL
129 typedef struct prvm_prog_fieldoffsets_s
131 // server and client use a lot of similar fields, so this is combined
132 int SendEntity; // ssqc
134 int alpha; // ssqc / csqc
135 int ammo_cells1; // ssqc - Dissolution of Eternity mission pack
136 int ammo_lava_nails; // ssqc - Dissolution of Eternity mission pack
137 int ammo_multi_rockets; // ssqc - Dissolution of Eternity mission pack
138 int ammo_nails1; // ssqc - Dissolution of Eternity mission pack
139 int ammo_plasma; // ssqc - Dissolution of Eternity mission pack
140 int ammo_rockets1; // ssqc - Dissolution of Eternity mission pack
141 int ammo_shells1; // ssqc - Dissolution of Eternity mission pack
142 int angles; // common - used by changeyaw/changepitch
150 int button10; // ssqc
151 int button11; // ssqc
152 int button12; // ssqc
153 int button13; // ssqc
154 int button14; // ssqc
155 int button15; // ssqc
156 int button16; // ssqc
157 int buttonchat; // ssqc
158 int buttonuse; // ssqc
159 int chain; // common - used by find builtins
160 int classname; // common
161 int clientcolors; // ssqc
163 int colormod; // ssqc / csqc
164 int contentstransition; // ssqc
165 int cursor_active; // ssqc
166 int cursor_screen; // ssqc
167 int cursor_trace_endpos; // ssqc
168 int cursor_trace_ent; // ssqc
169 int cursor_trace_start; // ssqc
170 int customizeentityforclient; // ssqc
171 int dimension_hit; // ssqc / csqc
172 int dimension_solid; // ssqc / csqc
173 int disableclientprediction; // ssqc
174 int dphitcontentsmask; // ssqc / csqc
175 int drawonlytoclient; // ssqc
176 int effects; // ssqc / csqc
177 int exteriormodeltoclient; // ssqc
178 int fatness; // ssqc / csqc
179 int forceshader; // csqc
180 int frame1time; // csqc
182 int frame2time; // csqc
183 int frame; // common - used by OP_STATE
184 int fullbright; // ssqc - Nehahra support
185 int glow_color; // ssqc
186 int glow_size; // ssqc
187 int glow_trail; // ssqc
189 int groundentity; // ssqc / csqc
190 int hull; // ssqc / csqc
191 int ideal_yaw; // ssqc / csqc
192 int idealpitch; // ssqc / csqc
194 int lerpfrac; // csqc
195 int light_lev; // ssqc
197 int modelflags; // ssqc
198 int movement; // ssqc
199 int nextthink; // common - used by OP_STATE
200 int netaddress; // ssqc
201 int nodrawtoclient; // ssqc
204 int pitch_speed; // ssqc / csqc
205 int playermodel; // ssqc
206 int playerskin; // ssqc
208 int punchvector; // ssqc
209 int renderamt; // ssqc - HalfLife support
210 int renderflags; // csqc
211 int rendermode; // ssqc - HalfLife support
212 int scale; // ssqc / csqc
214 int tag_entity; // ssqc / csqc
215 int tag_index; // ssqc / csqc
216 int think; // common - used by OP_STATE
217 int viewmodelforclient; // ssqc
218 int viewzoom; // ssqc
219 int yaw_speed; // ssqc / csqc
221 prvm_prog_fieldoffsets_t;
223 // NOTE: global offsets use -1 for NULL
224 typedef struct prvm_prog_globaloffsets_s
226 // server and client use a lot of similar globals, so this is combined
227 int SV_InitCmd; // ssqc
229 int time; // ssqc / csqc
230 int v_forward; // ssqc / csqc
231 int v_right; // ssqc / csqc
232 int v_up; // ssqc / csqc
233 int view_angles; // csqc
234 int trace_allsolid; // ssqc / csqc
235 int trace_startsolid; // ssqc / csqc
236 int trace_fraction; // ssqc / csqc
237 int trace_inwater; // ssqc / csqc
238 int trace_inopen; // ssqc / csqc
239 int trace_endpos; // ssqc / csqc
240 int trace_plane_normal; // ssqc / csqc
241 int trace_plane_dist; // ssqc / csqc
242 int trace_ent; // ssqc / csqc
243 int trace_dphitcontents; // ssqc / csqc
244 int trace_dphitq3surfaceflags; // ssqc / csqc
245 int trace_dphittexturename; // ssqc / csqc
246 int trace_dpstartcontents; // ssqc / csqc
247 int intermission; // csqc
249 int deathmatch; // csqc
250 int dmg_take; // csqc
251 int dmg_save; // csqc
252 int dmg_origin; // csqc
253 int sb_showscores; // csqc
254 int drawfont; // csqc / menu
255 int input_ascii; // csqc
257 prvm_prog_globaloffsets_t;
259 // these are initialized using PRVM_ED_FindFunction
260 // NOTE: function offsets use 0 for NULL
261 typedef struct prvm_prog_funcoffsets_s
263 func_t CSQC_ConsoleCommand; // csqc
264 func_t CSQC_Ent_Remove; // csqc
265 func_t CSQC_Ent_Update; // csqc
266 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...
267 func_t CSQC_Event_Sound; // csqc : called by engine when an incoming sound packet arrives so CSQC can act on it
268 func_t CSQC_Init; // csqc
269 func_t CSQC_InputEvent; // csqc
270 func_t CSQC_Parse_CenterPrint; // csqc
271 func_t CSQC_Parse_Print; // csqc
272 func_t CSQC_Parse_StuffCmd; // csqc
273 func_t CSQC_Parse_TempEntity; // csqc [515]: very helpfull when you want to create your own particles/decals/etc for effects that already exist
274 func_t CSQC_Shutdown; // csqc
275 func_t CSQC_UpdateView; // csqc
276 func_t EndFrame; // ssqc
277 func_t RestoreGame; // ssqc
278 func_t SV_ChangeTeam; // ssqc
279 func_t SV_ParseClientCommand; // ssqc
280 func_t SV_PlayerPhysics; // ssqc
281 func_t SV_OnEntityNoSpawnFunction; // ssqc
282 func_t GameCommand; // any
284 // menu qc only uses some functions, nothing else
285 func_t m_draw; // mqc
286 func_t m_init; // mqc
287 func_t m_keydown; // mqc
288 func_t m_keyup; // mqc
289 func_t m_shutdown; // mqc
290 func_t m_toggle; // mqc
292 prvm_prog_funcoffsets_t;
294 // [INIT] variables flagged with this token can be initialized by 'you'
295 // NOTE: external code has to create and free the mempools but everything else is done by prvm !
296 typedef struct prvm_prog_s
300 mfunction_t *functions;
305 dstatement_t *statements;
306 int edict_size; // in bytes
307 int edictareasize; // LordHavoc: in bytes (for bound checking)
309 int *statement_linenums; // NULL if not available
311 double *statement_profile; // only incremented if prvm_statementprofiling is on
315 globalvars_t *server;
316 cl_globalvars_t *client;
321 // this is updated whenever a string is removed or added
322 // (simple optimization of the free string search)
323 int firstfreeknownstring;
324 const char **knownstrings;
325 unsigned char *knownstrings_freeable;
326 const char ***stringshash;
328 // all memory allocations related to this vm_prog (code, edicts, strings)
329 mempool_t *progs_mempool; // [INIT]
331 prvm_builtin_t *builtins; // [INIT]
332 int numbuiltins; // [INIT]
337 mfunction_t *xfunction;
340 // stacktrace writes into stack[MAX_STACK_DEPTH]
341 // thus increase the array, so depth wont be overwritten
342 prvm_stack_t stack[PRVM_MAX_STACK_DEPTH+1];
345 int localstack[PRVM_LOCALSTACK_SIZE];
348 unsigned short headercrc; // [INIT]
350 unsigned short filecrc;
352 //============================================================================
353 // until this point everything also exists (with the pr_ prefix) in the old vm
355 qfile_t *openfiles[PRVM_MAX_OPENFILES];
356 fssearch_t *opensearches[PRVM_MAX_OPENSEARCHES];
358 struct clgecko_s *opengeckoinstances[PRVM_MAX_GECKOINSTANCES];
361 // copies of some vars that were former read from sv
363 // number of edicts for which space has been (should be) allocated
364 int max_edicts; // [INIT]
365 // used instead of the constant MAX_EDICTS
366 int limit_edicts; // [INIT]
368 // number of reserved edicts (allocated from 1)
369 int reserved_edicts; // [INIT]
371 prvm_edict_t *edicts;
375 // size of the engine private struct
376 int edictprivate_size; // [INIT]
378 prvm_prog_fieldoffsets_t fieldoffsets;
379 prvm_prog_globaloffsets_t globaloffsets;
380 prvm_prog_funcoffsets_t funcoffsets;
382 // allow writing to world entity fields, this is set by server init and
383 // cleared before first server frame
384 qboolean allowworldwrites;
386 // name of the prog, e.g. "Server", "Client" or "Menu" (used for text output)
387 char *name; // [INIT]
389 // flag - used to store general flags like PRVM_GE_SELF, etc.
392 char *extensionstring; // [INIT]
394 qboolean loadintoworld; // [INIT]
396 // used to indicate whether a prog is loaded
399 // prvm_builtin_mem_t *mem_list;
401 // now passed as parameter of PRVM_LoadProgs
402 // char **required_func;
403 // int numrequiredfunc;
405 //============================================================================
407 ddef_t *self; // if self != 0 then there is a global self
409 //============================================================================
412 void (*begin_increase_edicts)(void); // [INIT] used by PRVM_MEM_Increase_Edicts
413 void (*end_increase_edicts)(void); // [INIT]
415 void (*init_edict)(prvm_edict_t *edict); // [INIT] used by PRVM_ED_ClearEdict
416 void (*free_edict)(prvm_edict_t *ed); // [INIT] used by PRVM_ED_Free
418 void (*count_edicts)(void); // [INIT] used by PRVM_ED_Count_f
420 qboolean (*load_edict)(prvm_edict_t *ent); // [INIT] used by PRVM_ED_LoadFromFile
422 void (*init_cmd)(void); // [INIT] used by PRVM_InitProg
423 void (*reset_cmd)(void); // [INIT] used by PRVM_ResetProg
425 void (*error_cmd)(const char *format, ...) DP_FUNC_PRINTF(1); // [INIT]
429 extern prvm_prog_t * prog;
431 #define PRVM_MAXPROGS 3
432 #define PRVM_SERVERPROG 0 // actually not used at the moment
433 #define PRVM_CLIENTPROG 1
434 #define PRVM_MENUPROG 2
436 extern prvm_prog_t prvm_prog_list[PRVM_MAXPROGS];
438 //============================================================================
441 extern prvm_builtin_t vm_sv_builtins[];
442 extern prvm_builtin_t vm_cl_builtins[];
443 extern prvm_builtin_t vm_m_builtins[];
445 extern const int vm_sv_numbuiltins;
446 extern const int vm_cl_numbuiltins;
447 extern const int vm_m_numbuiltins;
449 extern char * vm_sv_extensions; // client also uses this
450 extern char * vm_m_extensions;
452 void VM_SV_Cmd_Init(void);
453 void VM_SV_Cmd_Reset(void);
455 void VM_CL_Cmd_Init(void);
456 void VM_CL_Cmd_Reset(void);
458 void VM_M_Cmd_Init(void);
459 void VM_M_Cmd_Reset(void);
461 void VM_Cmd_Init(void);
462 void VM_Cmd_Reset(void);
463 //============================================================================
465 void PRVM_Init (void);
467 void PRVM_ExecuteProgram (func_t fnum, const char *errormessage);
469 #define PRVM_Alloc(buffersize) _PRVM_Alloc(buffersize, __FILE__, __LINE__)
470 #define PRVM_Free(buffer) _PRVM_Free(buffer, __FILE__, __LINE__)
471 #define PRVM_FreeAll() _PRVM_FreeAll(__FILE__, __LINE__)
472 void *_PRVM_Alloc (size_t buffersize, const char *filename, int fileline);
473 void _PRVM_Free (void *buffer, const char *filename, int fileline);
474 void _PRVM_FreeAll (const char *filename, int fileline);
476 void PRVM_Profile (int maxfunctions, int mininstructions);
477 void PRVM_Profile_f (void);
478 void PRVM_CallProfile_f (void);
479 void PRVM_PrintFunction_f (void);
481 void PRVM_PrintState(void);
482 void PRVM_CrashAll (void);
483 void PRVM_Crash (void);
485 ddef_t *PRVM_ED_FindField(const char *name);
486 ddef_t *PRVM_ED_FindGlobal(const char *name);
487 mfunction_t *PRVM_ED_FindFunction(const char *name);
489 int PRVM_ED_FindFieldOffset(const char *name);
490 int PRVM_ED_FindGlobalOffset(const char *name);
491 func_t PRVM_ED_FindFunctionOffset(const char *name);
492 #define PRVM_ED_FindFieldOffset_FromStruct(st, field) prog->fieldoffsets . field = ((int *)(&((st *)NULL)-> field ) - ((int *)NULL))
493 #define PRVM_ED_FindGlobalOffset_FromStruct(st, field) prog->globaloffsets . field = ((int *)(&((st *)NULL)-> field ) - ((int *)NULL))
495 void PRVM_MEM_IncreaseEdicts(void);
497 prvm_edict_t *PRVM_ED_Alloc (void);
498 void PRVM_ED_Free (prvm_edict_t *ed);
499 void PRVM_ED_ClearEdict (prvm_edict_t *e);
501 void PRVM_PrintFunctionStatements (const char *name);
502 void PRVM_ED_Print(prvm_edict_t *ed, const char *wildcard_fieldname);
503 void PRVM_ED_Write (qfile_t *f, prvm_edict_t *ed);
504 const char *PRVM_ED_ParseEdict (const char *data, prvm_edict_t *ent);
506 void PRVM_ED_WriteGlobals (qfile_t *f);
507 void PRVM_ED_ParseGlobals (const char *data);
509 void PRVM_ED_LoadFromFile (const char *data);
511 prvm_edict_t *PRVM_EDICT_NUM_ERROR(int n, char *filename, int fileline);
512 #define PRVM_EDICT_NUM(n) (((unsigned)(n) < (unsigned int)prog->max_edicts) ? prog->edicts + (n) : PRVM_EDICT_NUM_ERROR(n, __FILE__, __LINE__))
514 //int NUM_FOR_EDICT_ERROR(prvm_edict_t *e);
515 #define PRVM_NUM_FOR_EDICT(e) ((int)((prvm_edict_t *)(e) - prog->edicts))
516 //int PRVM_NUM_FOR_EDICT(prvm_edict_t *e);
518 #define PRVM_NEXT_EDICT(e) ((e) + 1)
520 #define PRVM_EDICT_TO_PROG(e) (PRVM_NUM_FOR_EDICT(e))
521 //int PRVM_EDICT_TO_PROG(prvm_edict_t *e);
522 #define PRVM_PROG_TO_EDICT(n) (PRVM_EDICT_NUM(n))
523 //prvm_edict_t *PRVM_PROG_TO_EDICT(int n);
525 //============================================================================
527 #define PRVM_G_FLOAT(o) (prog->globals.generic[o])
528 #define PRVM_G_INT(o) (*(int *)&prog->globals.generic[o])
529 #define PRVM_G_EDICT(o) (PRVM_PROG_TO_EDICT(*(int *)&prog->globals.generic[o]))
530 #define PRVM_G_EDICTNUM(o) PRVM_NUM_FOR_EDICT(PRVM_G_EDICT(o))
531 #define PRVM_G_VECTOR(o) (&prog->globals.generic[o])
532 #define PRVM_G_STRING(o) (PRVM_GetString(*(string_t *)&prog->globals.generic[o]))
533 //#define PRVM_G_FUNCTION(o) (*(func_t *)&prog->globals.generic[o])
535 // FIXME: make these go away?
536 #define PRVM_E_FLOAT(e,o) (((float*)e->fields.vp)[o])
537 #define PRVM_E_INT(e,o) (((int*)e->fields.vp)[o])
538 //#define PRVM_E_VECTOR(e,o) (&((float*)e->fields.vp)[o])
539 #define PRVM_E_STRING(e,o) (PRVM_GetString(*(string_t *)&((float*)e->fields.vp)[o]))
541 extern int prvm_type_size[8]; // for consistency : I think a goal of this sub-project is to
542 // make the new vm mostly independent from the old one, thus if it's necessary, I copy everything
544 void PRVM_Init_Exec(void);
546 void PRVM_ED_PrintEdicts_f (void);
547 void PRVM_ED_PrintNum (int ent, const char *wildcard_fieldname);
549 const char *PRVM_GetString(int num);
550 int PRVM_SetEngineString(const char *s);
551 int PRVM_SetTempString(const char *s);
552 int PRVM_AllocString(size_t bufferlength, char **pointer);
553 void PRVM_FreeString(int num);
555 //============================================================================
557 // used as replacement for a prog stack
558 //#define PRVM_DEBUGPRSTACK
560 #ifdef PRVM_DEBUGPRSTACK
561 #define PRVM_Begin if(prog != 0) Con_Printf("prog not 0(prog = %i) in file: %s line: %i!\n", PRVM_GetProgNr(), __FILE__, __LINE__)
562 #define PRVM_End prog = 0
565 #define PRVM_End prog = 0
568 //#define PRVM_SAFENAME
569 #ifndef PRVM_SAFENAME
570 # define PRVM_NAME (prog->name)
572 # define PRVM_NAME (prog->name ? prog->name : "Unknown prog name")
575 // helper macro to make function pointer calls easier
576 #define PRVM_GCALL(func) if(prog->func) prog->func
578 #define PRVM_ERROR prog->error_cmd
580 // other prog handling functions
581 qboolean PRVM_SetProgFromString(const char *str);
582 void PRVM_SetProg(int prognr);
586 Call InitProg with the num
587 Set up the fields marked with [INIT] in the prog struct
588 Load a program with LoadProgs
590 void PRVM_InitProg(int prognr);
591 // LoadProgs expects to be called right after InitProg
592 void PRVM_LoadProgs (const char *filename, int numrequiredfunc, char **required_func, int numrequiredfields, prvm_required_field_t *required_field, int numrequiredglobals, char **required_global);
593 void PRVM_ResetProg(void);
595 qboolean PRVM_ProgLoaded(int prognr);
597 int PRVM_GetProgNr(void);
599 void VM_Warning(const char *fmt, ...) DP_FUNC_PRINTF(1);
601 // TODO: fill in the params
602 //void PRVM_Create();