demo recording: stuff csprogs.dat files into .dem files so demos can always be played...
[xonotic/darkplaces.git] / csprogs.c
1 #include "quakedef.h"
2 #include "progsvm.h"
3 #include "clprogdefs.h"
4 #include "csprogs.h"
5 #include "cl_collision.h"
6 #include "snd_main.h"
7 #include "clvm_cmds.h"
8
9 //============================================================================
10 // Client prog handling
11 //[515]: omg !!! optimize it ! a lot of hacks here and there also :P
12
13 #define CSQC_RETURNVAL  prog->globals.generic[OFS_RETURN]
14 #define CSQC_BEGIN              csqc_tmpprog=prog;prog=0;PRVM_SetProg(PRVM_CLIENTPROG);
15 #define CSQC_END                prog=csqc_tmpprog;
16 static prvm_prog_t *csqc_tmpprog;
17
18 //[515]: these are required funcs
19 static char *cl_required_func[] =
20 {
21         "CSQC_Init",
22         "CSQC_InputEvent",
23         "CSQC_UpdateView",
24         "CSQC_ConsoleCommand",
25 };
26
27 static int cl_numrequiredfunc = sizeof(cl_required_func) / sizeof(char*);
28
29 void CL_VM_Error (const char *format, ...) DP_FUNC_PRINTF(1);
30 void CL_VM_Error (const char *format, ...)      //[515]: hope it will be never executed =)
31 {
32         char errorstring[4096];
33         va_list argptr;
34
35         va_start (argptr, format);
36         dpvsnprintf (errorstring, sizeof(errorstring), format, argptr);
37         va_end (argptr);
38 //      Con_Printf( "CL_VM_Error: %s\n", errorstring );
39
40         PRVM_Crash();
41         cl.csqc_loaded = false;
42
43         Cvar_SetValueQuick(&csqc_progcrc, -1);
44         Cvar_SetValueQuick(&csqc_progsize, -1);
45
46 //      Host_AbortCurrentFrame();       //[515]: hmmm... if server says it needs csqc then client MUST disconnect
47         Host_Error(va("CL_VM_Error: %s", errorstring));
48 }
49 void CL_VM_UpdateDmgGlobals (int dmg_take, int dmg_save, vec3_t dmg_origin)
50 {
51         prvm_eval_t *val;
52         if(cl.csqc_loaded)
53         {
54                 CSQC_BEGIN
55                 val = PRVM_GLOBALFIELDVALUE(prog->globaloffsets.dmg_take);
56                 if(val)
57                         val->_float = dmg_take;
58                 val = PRVM_GLOBALFIELDVALUE(prog->globaloffsets.dmg_save);
59                 if(val)
60                         val->_float = dmg_save;
61                 val = PRVM_GLOBALFIELDVALUE(prog->globaloffsets.dmg_origin);
62                 if(val)
63                 {
64                         val->vector[0] = dmg_origin[0];
65                         val->vector[1] = dmg_origin[1];
66                         val->vector[2] = dmg_origin[2];
67                 }
68                 CSQC_END
69         }
70 }
71 //[515]: set globals before calling R_UpdateView, WEIRD CRAP
72 static void CSQC_SetGlobals (void)
73 {
74         prvm_eval_t *val;
75         CSQC_BEGIN
76                 prog->globals.client->time = cl.time;
77                 prog->globals.client->frametime = max(0, cl.time - cl.oldtime);
78                 prog->globals.client->servercommandframe = cls.servermovesequence;
79                 prog->globals.client->clientcommandframe = cl.movecmd[0].sequence;
80                 VectorCopy(cl.viewangles, prog->globals.client->input_angles);
81                 VectorCopy(cl.viewangles, cl.csqc_angles);
82                 // // FIXME: this actually belongs into getinputstate().. [12/17/2007 Black]
83                 prog->globals.client->input_buttons = cl.movecmd[0].buttons;
84                 VectorSet(prog->globals.client->input_movevalues, cl.movecmd[0].forwardmove, cl.movecmd[0].sidemove, cl.movecmd[0].upmove);
85                 //VectorCopy(cl.movement_origin, cl.csqc_origin);
86                 Matrix4x4_OriginFromMatrix(&cl.entities[cl.viewentity].render.matrix, cl.csqc_origin);
87
88                 // LordHavoc: Spike says not to do this, but without pmove_org the
89                 // CSQC is useless as it can't alter the view origin without
90                 // completely replacing it
91                 VectorCopy(cl.csqc_origin, prog->globals.client->pmove_org);
92                 VectorCopy(cl.velocity, prog->globals.client->pmove_vel);
93
94                 if ((val = PRVM_GLOBALFIELDVALUE(prog->globaloffsets.view_angles)))
95                         VectorCopy(cl.viewangles, val->vector);
96                 prog->globals.client->maxclients = cl.maxclients;
97         CSQC_END
98 }
99
100 void CSQC_Predraw (prvm_edict_t *ed)
101 {
102         int b;
103         if(!ed->fields.client->predraw)
104                 return;
105         b = prog->globals.client->self;
106         prog->globals.client->self = PRVM_EDICT_TO_PROG(ed);
107         PRVM_ExecuteProgram(ed->fields.client->predraw, "CSQC_Predraw: NULL function\n");
108         prog->globals.client->self = b;
109 }
110
111 void CSQC_Think (prvm_edict_t *ed)
112 {
113         int b;
114         if(ed->fields.client->think)
115         if(ed->fields.client->nextthink && ed->fields.client->nextthink <= prog->globals.client->time)
116         {
117                 ed->fields.client->nextthink = 0;
118                 b = prog->globals.client->self;
119                 prog->globals.client->self = PRVM_EDICT_TO_PROG(ed);
120                 PRVM_ExecuteProgram(ed->fields.client->think, "CSQC_Think: NULL function\n");
121                 prog->globals.client->self = b;
122         }
123 }
124
125 extern cvar_t cl_noplayershadow;
126 qboolean CSQC_AddRenderEdict(prvm_edict_t *ed)
127 {
128         int renderflags;
129         int c;
130         float scale;
131         prvm_eval_t *val;
132         entity_render_t *entrender;
133         dp_model_t *model;
134         matrix4x4_t tagmatrix, matrix2;
135
136         model = CL_GetModelFromEdict(ed);
137         if (!model)
138                 return false;
139
140         entrender = CL_NewTempEntity();
141         if (!entrender)
142                 return false;
143
144         entrender->model = model;
145         entrender->skinnum = (int)ed->fields.client->skin;
146         entrender->effects |= entrender->model->effects;
147         scale = 1;
148         renderflags = 0;
149         if((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.renderflags)) && val->_float)     renderflags = (int)val->_float;
150         if((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.alpha)) && val->_float)           entrender->alpha = val->_float;
151         if((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.scale)) && val->_float)           entrender->scale = scale = val->_float;
152         if((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.colormod)) && VectorLength2(val->vector)) VectorCopy(val->vector, entrender->colormod);
153         if((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.effects)) && val->_float) entrender->effects |= (int)val->_float;
154         if((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.tag_entity)) && val->edict)
155         {
156                 int tagentity;
157                 int tagindex = 0;
158                 tagentity = val->edict;
159                 if((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.tag_index)) && val->_float)
160                         tagindex = (int)val->_float;
161                 CL_GetTagMatrix (&tagmatrix, PRVM_PROG_TO_EDICT(tagentity), tagindex);
162         }
163         else
164                 Matrix4x4_CreateIdentity(&tagmatrix);
165
166         if (renderflags & RF_USEAXIS)
167         {
168                 vec3_t left;
169                 VectorNegate(prog->globals.client->v_right, left);
170                 Matrix4x4_FromVectors(&matrix2, prog->globals.client->v_forward, left, prog->globals.client->v_up, ed->fields.client->origin);
171                 Matrix4x4_Scale(&matrix2, scale, 1);
172         }
173         else
174         {
175                 vec3_t angles;
176                 VectorCopy(ed->fields.client->angles, angles);
177                 // if model is alias, reverse pitch direction
178                 if (entrender->model->type == mod_alias)
179                         angles[0] = -angles[0];
180
181                 // set up the render matrix
182                 Matrix4x4_CreateFromQuakeEntity(&matrix2, ed->fields.client->origin[0], ed->fields.client->origin[1], ed->fields.client->origin[2], angles[0], angles[1], angles[2], scale);
183         }
184
185         // set up the animation data
186         // self.frame is the interpolation target (new frame)
187         // self.frame1time is the animation base time for the interpolation target
188         // self.frame2 is the interpolation start (previous frame)
189         // self.frame2time is the animation base time for the interpolation start
190         entrender->frame1 = entrender->frame2 = ed->fields.client->frame;
191         if ((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.frame2))) entrender->frame2 = val->_float;
192         if ((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.frame1time))) entrender->frame2time = val->_float;
193         if ((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.frame2time))) entrender->frame1time = val->_float;
194         if ((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.lerpfrac))) entrender->framelerp = val->_float;
195
196         // concat the matrices to make the entity relative to its tag
197         Matrix4x4_Concat(&entrender->matrix, &tagmatrix, &matrix2);
198
199         if(renderflags)
200         {
201                 if(renderflags & RF_VIEWMODEL)  entrender->flags |= RENDER_VIEWMODEL;
202                 if(renderflags & RF_EXTERNALMODEL)entrender->flags |= RENDER_EXTERIORMODEL;
203                 if(renderflags & RF_DEPTHHACK)  entrender->effects |= EF_NODEPTHTEST;
204                 if(renderflags & RF_ADDITIVE)           entrender->effects |= EF_ADDITIVE;
205         }
206
207         c = (int)ed->fields.client->colormap;
208         if (c <= 0)
209                 CL_SetEntityColormapColors(entrender, -1);
210         else if (c <= cl.maxclients && cl.scores != NULL)
211                 CL_SetEntityColormapColors(entrender, cl.scores[c-1].colors);
212         else
213                 CL_SetEntityColormapColors(entrender, c);
214
215         // either fullbright or lit
216         if (!(entrender->effects & EF_FULLBRIGHT) && !r_fullbright.integer)
217                 entrender->flags |= RENDER_LIGHT;
218         // hide player shadow during intermission or nehahra movie
219         if (!(entrender->effects & (EF_NOSHADOW | EF_ADDITIVE | EF_NODEPTHTEST))
220          &&  (entrender->alpha >= 1)
221          && !(entrender->flags & RENDER_VIEWMODEL)
222          && (!(entrender->flags & RENDER_EXTERIORMODEL) || (!cl.intermission && cls.protocol != PROTOCOL_NEHAHRAMOVIE && !cl_noplayershadow.integer)))
223                 entrender->flags |= RENDER_SHADOW;
224         if (entrender->flags & RENDER_VIEWMODEL)
225                 entrender->flags |= RENDER_NOSELFSHADOW;
226
227         // make the other useful stuff
228         CL_UpdateRenderEntity(entrender);
229
230         return true;
231 }
232
233 qboolean CL_VM_InputEvent (qboolean down, int key, int ascii)
234 {
235         qboolean r;
236
237         if(!cl.csqc_loaded)
238                 return false;
239
240         CSQC_BEGIN
241                 if (!prog->funcoffsets.CSQC_InputEvent)
242                         r = false;
243                 else
244                 {
245                         prog->globals.client->time = cl.time;
246                         prog->globals.client->self = cl.csqc_server2csqcentitynumber[cl.playerentity];
247                         PRVM_G_FLOAT(OFS_PARM0) = !down; // 0 is down, 1 is up
248                         PRVM_G_FLOAT(OFS_PARM1) = key;
249                         PRVM_G_FLOAT(OFS_PARM2) = ascii;
250                         PRVM_ExecuteProgram(prog->funcoffsets.CSQC_InputEvent, "QC function CSQC_InputEvent is missing");
251                         r = CSQC_RETURNVAL;
252                 }
253         CSQC_END
254         return r;
255 }
256
257 qboolean CL_VM_UpdateView (void)
258 {
259         vec3_t emptyvector;
260         emptyvector[0] = 0;
261         emptyvector[1] = 0;
262         emptyvector[2] = 0;
263 //      vec3_t oldangles;
264         if(!cl.csqc_loaded)
265                 return false;
266         CSQC_BEGIN
267                 //VectorCopy(cl.viewangles, oldangles);
268                 prog->globals.client->time = cl.time;
269                 prog->globals.client->self = cl.csqc_server2csqcentitynumber[cl.playerentity];
270                 CSQC_SetGlobals();
271                 // clear renderable entity and light lists to prevent crashes if the
272                 // CSQC_UpdateView function does not call R_ClearScene as it should
273                 r_refdef.scene.numentities = 0;
274                 r_refdef.scene.numlights = 0;
275                 PRVM_ExecuteProgram(prog->funcoffsets.CSQC_UpdateView, "QC function CSQC_UpdateView is missing");
276                 //VectorCopy(oldangles, cl.viewangles);
277                 // Dresk : Reset Dmg Globals Here
278                 CL_VM_UpdateDmgGlobals(0, 0, emptyvector);
279         CSQC_END
280         return true;
281 }
282
283 extern sizebuf_t vm_tempstringsbuf;
284 qboolean CL_VM_ConsoleCommand (const char *cmd)
285 {
286         int restorevm_tempstringsbuf_cursize;
287         qboolean r = false;
288         if(!cl.csqc_loaded)
289                 return false;
290         CSQC_BEGIN
291         if (prog->funcoffsets.CSQC_ConsoleCommand)
292         {
293                 prog->globals.client->time = cl.time;
294                 prog->globals.client->self = cl.csqc_server2csqcentitynumber[cl.playerentity];
295                 restorevm_tempstringsbuf_cursize = vm_tempstringsbuf.cursize;
296                 PRVM_G_INT(OFS_PARM0) = PRVM_SetTempString(cmd);
297                 PRVM_ExecuteProgram(prog->funcoffsets.CSQC_ConsoleCommand, "QC function CSQC_ConsoleCommand is missing");
298                 vm_tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
299                 r = CSQC_RETURNVAL;
300         }
301         CSQC_END
302         return r;
303 }
304
305 qboolean CL_VM_Parse_TempEntity (void)
306 {
307         int                     t;
308         qboolean        r = false;
309         if(!cl.csqc_loaded)
310                 return false;
311         CSQC_BEGIN
312         if(prog->funcoffsets.CSQC_Parse_TempEntity)
313         {
314                 t = msg_readcount;
315                 prog->globals.client->time = cl.time;
316                 prog->globals.client->self = cl.csqc_server2csqcentitynumber[cl.playerentity];
317                 PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Parse_TempEntity, "QC function CSQC_Parse_TempEntity is missing");
318                 r = CSQC_RETURNVAL;
319                 if(!r)
320                 {
321                         msg_readcount = t;
322                         msg_badread = false;
323                 }
324         }
325         CSQC_END
326         return r;
327 }
328
329 void CL_VM_Parse_StuffCmd (const char *msg)
330 {
331         int restorevm_tempstringsbuf_cursize;
332         if(msg[0] == 'c')
333         if(msg[1] == 's')
334         if(msg[2] == 'q')
335         if(msg[3] == 'c')
336         {
337                 // if this is setting a csqc variable, deprotect csqc_progcrc
338                 // temporarily so that it can be set by the cvar command,
339                 // and then reprotect it afterwards
340                 int crcflags = csqc_progcrc.flags;
341                 int sizeflags = csqc_progcrc.flags;
342                 csqc_progcrc.flags &= ~CVAR_READONLY;
343                 csqc_progsize.flags &= ~CVAR_READONLY;
344                 Cmd_ExecuteString (msg, src_command);
345                 csqc_progcrc.flags = crcflags;
346                 csqc_progsize.flags = sizeflags;
347                 return;
348         }
349         if(!cl.csqc_loaded)
350         {
351                 Cbuf_AddText(msg);
352                 return;
353         }
354         CSQC_BEGIN
355         if(prog->funcoffsets.CSQC_Parse_StuffCmd)
356         {
357                 prog->globals.client->time = cl.time;
358                 prog->globals.client->self = cl.csqc_server2csqcentitynumber[cl.playerentity];
359                 restorevm_tempstringsbuf_cursize = vm_tempstringsbuf.cursize;
360                 PRVM_G_INT(OFS_PARM0) = PRVM_SetTempString(msg);
361                 PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Parse_StuffCmd, "QC function CSQC_Parse_StuffCmd is missing");
362                 vm_tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
363         }
364         else
365                 Cbuf_AddText(msg);
366         CSQC_END
367 }
368
369 static void CL_VM_Parse_Print (const char *msg)
370 {
371         int restorevm_tempstringsbuf_cursize;
372         prog->globals.client->time = cl.time;
373         prog->globals.client->self = cl.csqc_server2csqcentitynumber[cl.playerentity];
374         restorevm_tempstringsbuf_cursize = vm_tempstringsbuf.cursize;
375         PRVM_G_INT(OFS_PARM0) = PRVM_SetTempString(msg);
376         PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Parse_Print, "QC function CSQC_Parse_Print is missing");
377         vm_tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
378 }
379
380 void CSQC_AddPrintText (const char *msg)
381 {
382         size_t i;
383         if(!cl.csqc_loaded)
384         {
385                 Con_Print(msg);
386                 return;
387         }
388         CSQC_BEGIN
389         if(prog->funcoffsets.CSQC_Parse_Print)
390         {
391                 // FIXME: is this bugged?
392                 i = strlen(msg)-1;
393                 if(msg[i] != '\n' && msg[i] != '\r')
394                 {
395                         if(strlen(cl.csqc_printtextbuf)+i >= MAX_INPUTLINE)
396                         {
397                                 CL_VM_Parse_Print(cl.csqc_printtextbuf);
398                                 cl.csqc_printtextbuf[0] = 0;
399                         }
400                         else
401                                 strlcat(cl.csqc_printtextbuf, msg, MAX_INPUTLINE);
402                         return;
403                 }
404                 strlcat(cl.csqc_printtextbuf, msg, MAX_INPUTLINE);
405                 CL_VM_Parse_Print(cl.csqc_printtextbuf);
406                 cl.csqc_printtextbuf[0] = 0;
407         }
408         else
409                 Con_Print(msg);
410         CSQC_END
411 }
412
413 void CL_VM_Parse_CenterPrint (const char *msg)
414 {
415         int restorevm_tempstringsbuf_cursize;
416         if(!cl.csqc_loaded)
417         {
418                 SCR_CenterPrint(msg);
419                 return;
420         }
421         CSQC_BEGIN
422         if(prog->funcoffsets.CSQC_Parse_CenterPrint)
423         {
424                 prog->globals.client->time = cl.time;
425                 prog->globals.client->self = cl.csqc_server2csqcentitynumber[cl.playerentity];
426                 restorevm_tempstringsbuf_cursize = vm_tempstringsbuf.cursize;
427                 PRVM_G_INT(OFS_PARM0) = PRVM_SetTempString(msg);
428                 PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Parse_CenterPrint, "QC function CSQC_Parse_CenterPrint is missing");
429                 vm_tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
430         }
431         else
432                 SCR_CenterPrint(msg);
433         CSQC_END
434 }
435
436 void CL_VM_UpdateIntermissionState (int intermission)
437 {
438         prvm_eval_t *val;
439         if(cl.csqc_loaded)
440         {
441                 CSQC_BEGIN
442                 val = PRVM_GLOBALFIELDVALUE(prog->globaloffsets.intermission);
443                 if(val)
444                         val->_float = intermission;
445                 CSQC_END
446         }
447 }
448 void CL_VM_UpdateShowingScoresState (int showingscores)
449 {
450         prvm_eval_t *val;
451         if(cl.csqc_loaded)
452         {
453                 CSQC_BEGIN
454                 val = PRVM_GLOBALFIELDVALUE(prog->globaloffsets.sb_showscores);
455                 if(val)
456                         val->_float = showingscores;
457                 CSQC_END
458         }
459 }
460 qboolean CL_VM_Event_Sound(int sound_num, int volume, int channel, float attenuation, int ent, vec3_t pos)
461 {
462         qboolean r = false;
463         if(cl.csqc_loaded)
464         {
465                 CSQC_BEGIN
466                 if(prog->funcoffsets.CSQC_Event_Sound)
467                 {
468                         prog->globals.client->time = cl.time;
469                         prog->globals.client->self = cl.csqc_server2csqcentitynumber[cl.playerentity];
470                         PRVM_G_FLOAT(OFS_PARM0) = ent;
471                         PRVM_G_FLOAT(OFS_PARM1) = channel;
472                         PRVM_G_INT(OFS_PARM2) = PRVM_SetTempString(cl.sound_name[sound_num] );
473                         PRVM_G_FLOAT(OFS_PARM3) = volume;
474                         PRVM_G_FLOAT(OFS_PARM4) = attenuation;
475                         VectorCopy(pos, PRVM_G_VECTOR(OFS_PARM5) );
476                         PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Event_Sound, "QC function CSQC_Event_Sound is missing");
477                         r = CSQC_RETURNVAL;
478                 }
479                 CSQC_END
480         }
481
482         return r;
483 }
484 void CL_VM_UpdateCoopDeathmatchGlobals (int gametype)
485 {
486         // Avoid global names for clean(er) coding
487         int localcoop;
488         int localdeathmatch;
489
490         prvm_eval_t *val;
491         if(cl.csqc_loaded)
492         {
493                 if(gametype == GAME_COOP)
494                 {
495                         localcoop = 1;
496                         localdeathmatch = 0;
497                 }
498                 else
499                 if(gametype == GAME_DEATHMATCH)
500                 {
501                         localcoop = 0;
502                         localdeathmatch = 1;
503                 }
504                 else
505                 {
506                         // How did the ServerInfo send an unknown gametype?
507                         // Better just assign the globals as 0...
508                         localcoop = 0;
509                         localdeathmatch = 0;
510                 }
511                 CSQC_BEGIN
512                 val = PRVM_GLOBALFIELDVALUE(prog->globaloffsets.coop);
513                 if(val)
514                         val->_float = localcoop;
515                 val = PRVM_GLOBALFIELDVALUE(prog->globaloffsets.deathmatch);
516                 if(val)
517                         val->_float = localdeathmatch;
518                 CSQC_END
519         }
520 }
521 float CL_VM_Event (float event)         //[515]: needed ? I'd say "YES", but don't know for what :D
522 {
523         float r = 0;
524         if(!cl.csqc_loaded)
525                 return 0;
526         CSQC_BEGIN
527         if(prog->funcoffsets.CSQC_Event)
528         {
529                 prog->globals.client->time = cl.time;
530                 prog->globals.client->self = cl.csqc_server2csqcentitynumber[cl.playerentity];
531                 PRVM_G_FLOAT(OFS_PARM0) = event;
532                 PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Event, "QC function CSQC_Event is missing");
533                 r = CSQC_RETURNVAL;
534         }
535         CSQC_END
536         return r;
537 }
538
539 void CSQC_ReadEntities (void)
540 {
541         unsigned short entnum, oldself, realentnum;
542         if(!cl.csqc_loaded)
543         {
544                 Host_Error ("CSQC_ReadEntities: CSQC is not loaded");
545                 return;
546         }
547
548         CSQC_BEGIN
549                 prog->globals.client->time = cl.time;
550                 oldself = prog->globals.client->self;
551                 while(1)
552                 {
553                         entnum = MSG_ReadShort();
554                         if(!entnum || msg_badread)
555                                 return;
556                         realentnum = entnum & 0x7FFF;
557                         prog->globals.client->self = cl.csqc_server2csqcentitynumber[realentnum];
558                         if(entnum & 0x8000)
559                         {
560                                 if(prog->globals.client->self)
561                                 {
562                                         PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Ent_Remove, "QC function CSQC_Ent_Remove is missing");
563                                         cl.csqc_server2csqcentitynumber[realentnum] = 0;
564                                 }
565                                 else
566                                 {
567                                         // LordHavoc: removing an entity that is already gone on
568                                         // the csqc side is possible for legitimate reasons (such
569                                         // as a repeat of the remove message), so no warning is
570                                         // needed
571                                         //Con_Printf("Bad csqc_server2csqcentitynumber map\n"); //[515]: never happens ?
572                                 }
573                         }
574                         else
575                         {
576                                 if(!prog->globals.client->self)
577                                 {
578                                         if(!prog->funcoffsets.CSQC_Ent_Spawn)
579                                         {
580                                                 prvm_edict_t    *ed;
581                                                 ed = PRVM_ED_Alloc();
582                                                 ed->fields.client->entnum = realentnum;
583                                                 prog->globals.client->self = cl.csqc_server2csqcentitynumber[realentnum] = PRVM_EDICT_TO_PROG(ed);
584                                         }
585                                         else
586                                         {
587                                                 // entity( float entnum ) CSQC_Ent_Spawn;
588                                                 // the qc function should set entnum, too (this way it also can return world [2/1/2008 Andreas]
589                                                 PRVM_G_FLOAT(OFS_PARM0) = (float) realentnum;
590                                                 // make sure no one gets wrong ideas
591                                                 prog->globals.client->self = 0;
592                                                 PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Ent_Spawn, "QC function CSQC_Ent_Spawn is missing");
593                                                 prog->globals.client->self = cl.csqc_server2csqcentitynumber[realentnum] = PRVM_EDICT( PRVM_G_INT( OFS_RETURN ) );
594                                         }
595                                         PRVM_G_FLOAT(OFS_PARM0) = 1;
596                                         PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Ent_Update, "QC function CSQC_Ent_Update is missing");
597                                 }
598                                 else {
599                                         PRVM_G_FLOAT(OFS_PARM0) = 0;
600                                         PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Ent_Update, "QC function CSQC_Ent_Update is missing");
601                                 }
602                         }
603                 }
604                 prog->globals.client->self = oldself;
605         CSQC_END
606 }
607
608 void CL_VM_CB_BeginIncreaseEdicts(void)
609 {
610         // links don't survive the transition, so unlink everything
611         World_UnlinkAll(&cl.world);
612 }
613
614 void CL_VM_CB_EndIncreaseEdicts(void)
615 {
616         int i;
617         prvm_edict_t *ent;
618
619         // link every entity except world
620         for (i = 1, ent = prog->edicts;i < prog->max_edicts;i++, ent++)
621                 if (!ent->priv.server->free)
622                         CL_LinkEdict(ent);
623 }
624
625 void CL_VM_CB_InitEdict(prvm_edict_t *e)
626 {
627         e->priv.server->move = false; // don't move on first frame
628 }
629
630 void CL_VM_CB_FreeEdict(prvm_edict_t *ed)
631 {
632         World_UnlinkEdict(ed);
633         memset(ed->fields.client, 0, sizeof(*ed->fields.client));
634 }
635
636 void CL_VM_CB_CountEdicts(void)
637 {
638         int             i;
639         prvm_edict_t    *ent;
640         int             active = 0, models = 0, solid = 0;
641
642         for (i=0 ; i<prog->num_edicts ; i++)
643         {
644                 ent = PRVM_EDICT_NUM(i);
645                 if (ent->priv.server->free)
646                         continue;
647                 active++;
648                 if (ent->fields.client->solid)
649                         solid++;
650                 if (ent->fields.client->model)
651                         models++;
652         }
653
654         Con_Printf("num_edicts:%3i\n", prog->num_edicts);
655         Con_Printf("active    :%3i\n", active);
656         Con_Printf("view      :%3i\n", models);
657         Con_Printf("touch     :%3i\n", solid);
658 }
659
660 qboolean CL_VM_CB_LoadEdict(prvm_edict_t *ent)
661 {
662         return true;
663 }
664
665 void Cmd_ClearCsqcFuncs (void);
666
667 // returns true if the packet is valid, false if end of file is reached
668 // used for dumping the CSQC download into demo files
669 qboolean MakeDownloadPacket(const char *filename, void *data, unsigned long len, int crc, int cnt, sizebuf_t *buf, int protocol)
670 {
671         int packetsize = buf->maxsize - 7; // byte short long
672         int npackets = (len + packetsize - 1) / (packetsize);
673
674         if(protocol == PROTOCOL_QUAKEWORLD)
675                 return false; // CSQC can't run in QW anyway
676
677         SZ_Clear(buf);
678         if(cnt == 0)
679         {
680                 MSG_WriteByte(buf, svc_stufftext);
681                 MSG_WriteString(buf, va("\ncl_downloadbegin %lu %s\n", len, filename));
682                 return true;
683         }
684         else if(cnt >= 1 && cnt <= npackets)
685         {
686                 unsigned long thispacketoffset = (cnt - 1) * packetsize;
687                 int thispacketsize = len - thispacketoffset;
688                 if(thispacketsize > packetsize)
689                         thispacketsize = packetsize;
690
691                 MSG_WriteByte(buf, svc_downloaddata);
692                 MSG_WriteLong(buf, thispacketoffset);
693                 MSG_WriteShort(buf, thispacketsize);
694                 SZ_Write(buf, data + thispacketoffset, thispacketsize);
695
696                 return true;
697         }
698         else if(cnt == npackets + 1)
699         {
700                 MSG_WriteByte(buf, svc_stufftext);
701                 MSG_WriteString(buf, va("\ncl_downloadfinished %lu %d\n", len, crc));
702                 return true;
703         }
704         return false;
705 }
706
707 void CL_VM_Init (void)
708 {
709         const char* csprogsfn;
710         unsigned char *csprogsdata;
711         fs_offset_t csprogsdatasize;
712         int csprogsdatacrc, requiredcrc;
713         int requiredsize;
714         prvm_eval_t *val;
715
716         // reset csqc_progcrc after reading it, so that changing servers doesn't
717         // expect csqc on the next server
718         requiredcrc = csqc_progcrc.integer;
719         requiredsize = csqc_progsize.integer;
720         Cvar_SetValueQuick(&csqc_progcrc, -1);
721         Cvar_SetValueQuick(&csqc_progsize, -1);
722
723         // if the server is not requesting a csprogs, then we're done here
724         if (requiredcrc < 0)
725                 return;
726
727         // see if the requested csprogs.dat file matches the requested crc
728         csprogsdatacrc = -1;
729         csprogsfn = va("dlcache/%s.%i.%i", csqc_progname.string, requiredsize, requiredcrc);
730         csprogsdata = FS_LoadFile(csprogsfn, tempmempool, true, &csprogsdatasize);
731         if (!csprogsdata)
732         {
733                 csprogsfn = csqc_progname.string;
734                 csprogsdata = FS_LoadFile(csprogsfn, tempmempool, true, &csprogsdatasize);
735         }
736         if (csprogsdata)
737         {
738                 csprogsdatacrc = CRC_Block(csprogsdata, csprogsdatasize);
739                 if (csprogsdatacrc != requiredcrc || csprogsdatasize != requiredsize)
740                 {
741                         if (cls.demoplayback)
742                         {
743                                 Con_Printf("^1Warning: Your %s is not the same version as the demo was recorded with (CRC/size are %i/%i but should be %i/%i)\n", csqc_progname.string, csprogsdatacrc, (int)csprogsdatasize, requiredcrc, requiredsize);
744                                 // Mem_Free(csprogsdata);
745                                 // return;
746                                 // We WANT to continue here, and play the demo with different csprogs!
747                                 // After all, this is just a warning. Sure things may go wrong from here.
748                         }
749                         else
750                         {
751                                 Mem_Free(csprogsdata);
752                                 Con_Printf("^1Your %s is not the same version as the server (CRC is %i/%i but should be %i/%i)\n", csqc_progname.string, csprogsdatacrc, (int)csprogsdatasize, requiredcrc, requiredsize);
753                                 CL_Disconnect();
754                                 return;
755                         }
756                 }
757         }
758         else
759         {
760                 if (requiredcrc >= 0)
761                 {
762                         if (cls.demoplayback)
763                                 Con_Printf("CL_VM_Init: demo requires CSQC, but \"%s\" wasn't found\n", csqc_progname.string);
764                         else
765                                 Con_Printf("CL_VM_Init: server requires CSQC, but \"%s\" wasn't found\n", csqc_progname.string);
766                         CL_Disconnect();
767                 }
768                 return;
769         }
770
771         PRVM_Begin;
772         PRVM_InitProg(PRVM_CLIENTPROG);
773
774         // allocate the mempools
775         prog->progs_mempool = Mem_AllocPool(csqc_progname.string, 0, NULL);
776         prog->headercrc = CL_PROGHEADER_CRC;
777         prog->edictprivate_size = 0; // no private struct used
778         prog->name = CL_NAME;
779         prog->num_edicts = 1;
780         prog->max_edicts = 512;
781         prog->limit_edicts = CL_MAX_EDICTS;
782         prog->reserved_edicts = 0;
783         prog->edictprivate_size = sizeof(edict_engineprivate_t);
784         // TODO: add a shared extension string #define and add real support for csqc extension strings [12/5/2007 Black]
785         prog->extensionstring = vm_sv_extensions;
786         prog->builtins = vm_cl_builtins;
787         prog->numbuiltins = vm_cl_numbuiltins;
788         prog->begin_increase_edicts = CL_VM_CB_BeginIncreaseEdicts;
789         prog->end_increase_edicts = CL_VM_CB_EndIncreaseEdicts;
790         prog->init_edict = CL_VM_CB_InitEdict;
791         prog->free_edict = CL_VM_CB_FreeEdict;
792         prog->count_edicts = CL_VM_CB_CountEdicts;
793         prog->load_edict = CL_VM_CB_LoadEdict;
794         prog->init_cmd = VM_CL_Cmd_Init;
795         prog->reset_cmd = VM_CL_Cmd_Reset;
796         prog->error_cmd = CL_VM_Error;
797
798         PRVM_LoadProgs(csprogsfn, cl_numrequiredfunc, cl_required_func, 0, NULL, 0, NULL);
799
800         if (!prog->loaded)
801         {
802                 CL_VM_Error("CSQC %s ^2failed to load\n", csprogsfn);
803                 if(!sv.active)
804                         CL_Disconnect();
805                 Mem_Free(csprogsdata);
806                 return;
807         }
808
809         Con_Printf("CSQC %s ^5loaded (crc=%i, size=%i)\n", csprogsfn, csprogsdatacrc, (int)csprogsdatasize);
810
811         if(cls.demorecording)
812         {
813                 int i;
814                 char buf[NET_MAXMESSAGE];
815                 sizebuf_t sb;
816                 void *demobuf; fs_offset_t demofilesize;
817
818                 sb.data = (void *) buf;
819                 sb.maxsize = sizeof(buf);
820                 i = 0;
821
822                 CL_CutDemo(&demobuf, &demofilesize);
823                 while(MakeDownloadPacket(csprogsfn, csprogsdata, csprogsdatasize, csprogsdatacrc, i++, &sb, cls.protocol))
824                         CL_WriteDemoMessage(&sb);
825                 CL_PasteDemo(&demobuf, &demofilesize);
826         }
827         Mem_Free(csprogsdata);
828
829         // check if OP_STATE animation is possible in this dat file
830         if (prog->fieldoffsets.nextthink >= 0 && prog->fieldoffsets.frame >= 0 && prog->fieldoffsets.think >= 0 && prog->globaloffsets.self >= 0)
831                 prog->flag |= PRVM_OP_STATE;
832
833         // set time
834         prog->globals.client->time = cl.time;
835         prog->globals.client->self = 0;
836
837         prog->globals.client->mapname = cl.worldmodel ? PRVM_SetEngineString(cl.worldmodel->name) : PRVM_SetEngineString("");
838         prog->globals.client->player_localentnum = cl.playerentity;
839
840         // set map description (use world entity 0)
841         val = PRVM_EDICTFIELDVALUE(prog->edicts, prog->fieldoffsets.message);
842         if(val)
843                 val->string = PRVM_SetEngineString(cl.levelname);
844         VectorCopy(cl.world.mins, prog->edicts->fields.client->mins);
845         VectorCopy(cl.world.maxs, prog->edicts->fields.client->maxs);
846
847         // call the prog init
848         PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Init, "QC function CSQC_Init is missing");
849
850         PRVM_End;
851         cl.csqc_loaded = true;
852
853         cl.csqc_vidvars.drawcrosshair = false;
854         cl.csqc_vidvars.drawenginesbar = false;
855
856         // Update Coop and Deathmatch Globals (at this point the client knows them from ServerInfo)
857         CL_VM_UpdateCoopDeathmatchGlobals(cl.gametype);
858 }
859
860 void CL_VM_ShutDown (void)
861 {
862         Cmd_ClearCsqcFuncs();
863         //Cvar_SetValueQuick(&csqc_progcrc, -1);
864         //Cvar_SetValueQuick(&csqc_progsize, -1);
865         if(!cl.csqc_loaded)
866                 return;
867         CSQC_BEGIN
868                 prog->globals.client->time = cl.time;
869                 prog->globals.client->self = 0;
870                 if (prog->funcoffsets.CSQC_Shutdown)
871                         PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Shutdown, "QC function CSQC_Shutdown is missing");
872                 PRVM_ResetProg();
873         CSQC_END
874         Con_Print("CSQC ^1unloaded\n");
875         cl.csqc_loaded = false;
876 }