csprogs.c

   1 #include "quakedef.h"
   2 #include "progsvm.h"
   3 #include "clprogdefs.h"
   4 #include "csprogs.h"
   5 #include "cl_collision.h"
   6
   7 //============================================================================
   8 // Client prog handling
   9 //[515]: omg !!! optimize it ! a lot of hacks here and there also :P
  10
  11 #define CSQC_RETURNVAL  prog->globals.generic[OFS_RETURN]
  12 #define CSQC_BEGIN              csqc_tmpprog=prog;prog=0;PRVM_SetProg(PRVM_CLIENTPROG);
  13 #define CSQC_END                prog=csqc_tmpprog;
  14 static prvm_prog_t *csqc_tmpprog;
  15
  16 //[515]: these are required funcs
  17 static char *cl_required_func[] =
  18 {
  19         "CSQC_Init",
  20         "CSQC_InputEvent",
  21         "CSQC_UpdateView",
  22         "CSQC_ConsoleCommand",
  23         "CSQC_Shutdown"
  24 };
  25
  26 static int cl_numrequiredfunc = sizeof(cl_required_func) / sizeof(char*);
  27
  28 void CL_VM_Error (const char *format, ...) DP_FUNC_PRINTF(1);
  29 void CL_VM_Error (const char *format, ...)      //[515]: hope it will be never executed =)
  30 {
  31         char errorstring[4096];
  32         va_list argptr;
  33
  34         va_start (argptr, format);
  35         dpvsnprintf (errorstring, sizeof(errorstring), format, argptr);
  36         va_end (argptr);
  37 //      Con_Printf( "CL_VM_Error: %s\n", errorstring );
  38
  39         PRVM_Crash();
  40         cl.csqc_loaded = false;
  41
  42         Cvar_SetValueQuick(&csqc_progcrc, -1);
  43         Cvar_SetValueQuick(&csqc_progsize, -1);
  44
  45 //      Host_AbortCurrentFrame();       //[515]: hmmm... if server says it needs csqc then client MUST disconnect
  46         Host_Error(va("CL_VM_Error: %s", errorstring));
  47 }
  48
  49 //[515]: set globals before calling R_UpdateView, WEIRD CRAP
  50 static void CSQC_SetGlobals (void)
  51 {
  52         CSQC_BEGIN
  53                 prog->globals.client->time = cl.time;
  54                 prog->globals.client->frametime = max(0, cl.time - cl.oldtime);
  55                 prog->globals.client->servercommandframe = cls.servermovesequence;
  56                 prog->globals.client->clientcommandframe = cl.movecmd[0].sequence;
  57                 VectorCopy(cl.viewangles, prog->globals.client->input_angles);
  58                 VectorCopy(cl.viewangles, cl.csqc_angles);
  59                 prog->globals.client->input_buttons = cl.movecmd[0].buttons;
  60                 VectorSet(prog->globals.client->input_movevalues, cl.movecmd[0].forwardmove, cl.movecmd[0].sidemove, cl.movecmd[0].upmove);
  61                 //VectorCopy(cl.movement_origin, cl.csqc_origin);
  62                 Matrix4x4_OriginFromMatrix(&cl.entities[cl.viewentity].render.matrix, cl.csqc_origin);
  63                 VectorCopy(cl.csqc_origin, prog->globals.client->pmove_org);
  64                 prog->globals.client->maxclients = cl.maxclients;
  65                 //VectorCopy(cl.movement_velocity, prog->globals.client->pmove_vel);
  66                 VectorCopy(cl.velocity, prog->globals.client->pmove_vel);
  67         CSQC_END
  68 }
  69
  70 void CSQC_Predraw (prvm_edict_t *ed)
  71 {
  72         int b;
  73         if(!ed->fields.client->predraw)
  74                 return;
  75         b = prog->globals.client->self;
  76         prog->globals.client->self = PRVM_EDICT_TO_PROG(ed);
  77         PRVM_ExecuteProgram(ed->fields.client->predraw, "CSQC_Predraw: NULL function\n");
  78         prog->globals.client->self = b;
  79 }
  80
  81 void CSQC_Think (prvm_edict_t *ed)
  82 {
  83         int b;
  84         if(ed->fields.client->think)
  85         if(ed->fields.client->nextthink && ed->fields.client->nextthink <= prog->globals.client->time)
  86         {
  87                 ed->fields.client->nextthink = 0;
  88                 b = prog->globals.client->self;
  89                 prog->globals.client->self = PRVM_EDICT_TO_PROG(ed);
  90                 PRVM_ExecuteProgram(ed->fields.client->think, "CSQC_Think: NULL function\n");
  91                 prog->globals.client->self = b;
  92         }
  93 }
  94
  95 extern cvar_t cl_noplayershadow;
  96 qboolean CSQC_AddRenderEdict(prvm_edict_t *ed)
  97 {
  98         int renderflags;
  99         float scale;
 100         prvm_eval_t *val;
 101         entity_t *e;
 102         model_t *model;
 103         matrix4x4_t tagmatrix, matrix2;
 104
 105         model = CL_GetModelFromEdict(ed);
 106         if (!model)
 107                 return false;
 108
 109         e = CL_NewTempEntity();
 110         if (!e)
 111                 return false;
 112
 113         e->render.model = model;
 114         e->render.colormap = (int)ed->fields.client->colormap;
 115         e->render.skinnum = (int)ed->fields.client->skin;
 116         e->render.effects |= e->render.model->effects;
 117         scale = 1;
 118         renderflags = 0;
 119         if((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.renderflags)) && val->_float)     renderflags = (int)val->_float;
 120         if((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.alpha)) && val->_float)           e->render.alpha = val->_float;
 121         if((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.scale)) && val->_float)           e->render.scale = scale = val->_float;
 122         if((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.colormod)) && VectorLength2(val->vector)) VectorCopy(val->vector, e->render.colormod);
 123         if((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.effects)) && val->_float) e->render.effects |= (int)val->_float;
 124         if((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.tag_entity)) && val->edict)
 125         {
 126                 int tagentity;
 127                 int tagindex = 0;
 128                 tagentity = val->edict;
 129                 if((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.tag_index)) && val->_float)
 130                         tagindex = (int)val->_float;
 131                 // FIXME: calculate tag matrix
 132                 Matrix4x4_CreateIdentity(&tagmatrix);
 133         }
 134         else
 135                 Matrix4x4_CreateIdentity(&tagmatrix);
 136
 137         if (renderflags & RF_USEAXIS)
 138         {
 139                 vec3_t left;
 140                 VectorNegate(prog->globals.client->v_right, left);
 141                 Matrix4x4_FromVectors(&matrix2, prog->globals.client->v_forward, left, prog->globals.client->v_up, ed->fields.client->origin);
 142                 Matrix4x4_Scale(&matrix2, scale, 1);
 143         }
 144         else
 145         {
 146                 vec3_t angles;
 147                 VectorCopy(ed->fields.client->angles, angles);
 148                 // if model is alias, reverse pitch direction
 149                 if (e->render.model->type == mod_alias)
 150                         angles[0] = -angles[0];
 151
 152                 // set up the render matrix
 153                 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);
 154         }
 155
 156         // set up the animation data
 157         // self.frame is the interpolation target (new frame)
 158         // self.frame1time is the animation base time for the interpolation target
 159         // self.frame2 is the interpolation start (previous frame)
 160         // self.frame2time is the animation base time for the interpolation start
 161         e->render.frame1 = e->render.frame2 = ed->fields.client->frame;
 162         if ((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.frame2))) e->render.frame2 = val->_float;
 163         if ((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.frame1time))) e->render.frame2time = val->_float;
 164         if ((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.frame2time))) e->render.frame1time = val->_float;
 165         if ((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.lerpfrac))) e->render.framelerp = val->_float;
 166
 167         // concat the matrices to make the entity relative to its tag
 168         Matrix4x4_Concat(&e->render.matrix, &tagmatrix, &matrix2);
 169         // make the other useful stuff
 170         CL_UpdateRenderEntity(&e->render);
 171
 172         if(renderflags)
 173         {
 174                 if(renderflags & RF_VIEWMODEL)  e->render.flags |= RENDER_VIEWMODEL;
 175                 if(renderflags & RF_EXTERNALMODEL)e->render.flags |= RENDER_EXTERIORMODEL;
 176                 if(renderflags & RF_DEPTHHACK)  e->render.effects |= EF_NODEPTHTEST;
 177                 if(renderflags & RF_ADDITIVE)           e->render.effects |= EF_ADDITIVE;
 178         }
 179
 180         if ((e->render.colormap > 0 && e->render.colormap <= cl.maxclients) || e->render.colormap >= 1024)
 181         {
 182                 int cb;
 183                 unsigned char *cbcolor;
 184                 int palcol;
 185                 if (e->render.colormap >= 1024)
 186                         palcol = (unsigned char)(e->render.colormap-1024);
 187                 else
 188                         palcol = cl.scores[e->render.colormap-1].colors;
 189
 190                 cb = (palcol & 0xF) << 4;cb += (cb >= 128 && cb < 224) ? 4 : 12;
 191                 cbcolor = (unsigned char *) (&palette_complete[cb]);
 192                 e->render.colormap_pantscolor[0] = cbcolor[0] * (1.0f / 255.0f);
 193                 e->render.colormap_pantscolor[1] = cbcolor[1] * (1.0f / 255.0f);
 194                 e->render.colormap_pantscolor[2] = cbcolor[2] * (1.0f / 255.0f);
 195                 cb = (palcol & 0xF0);cb += (cb >= 128 && cb < 224) ? 4 : 12;
 196                 cbcolor = (unsigned char *) (&palette_complete[cb]);
 197                 e->render.colormap_shirtcolor[0] = cbcolor[0] * (1.0f / 255.0f);
 198                 e->render.colormap_shirtcolor[1] = cbcolor[1] * (1.0f / 255.0f);
 199                 e->render.colormap_shirtcolor[2] = cbcolor[2] * (1.0f / 255.0f);
 200         }
 201
 202         // either fullbright or lit
 203         if (!(e->render.effects & EF_FULLBRIGHT) && !r_fullbright.integer)
 204                 e->render.flags |= RENDER_LIGHT;
 205         // hide player shadow during intermission or nehahra movie
 206         if (!(e->render.effects & (EF_NOSHADOW | EF_ADDITIVE | EF_NODEPTHTEST))
 207          &&  (e->render.alpha >= 1)
 208          && !(e->render.flags & RENDER_VIEWMODEL)
 209          && (!(e->render.flags & RENDER_EXTERIORMODEL) || (!cl.intermission && cls.protocol != PROTOCOL_NEHAHRAMOVIE && !cl_noplayershadow.integer)))
 210                 e->render.flags |= RENDER_SHADOW;
 211         if (e->render.flags & RENDER_VIEWMODEL)
 212                 e->render.flags |= RENDER_NOSELFSHADOW;
 213
 214         return true;
 215 }
 216
 217 qboolean CL_VM_InputEvent (qboolean pressed, int key)
 218 {
 219         qboolean r;
 220         if(!cl.csqc_loaded)
 221                 return false;
 222         CSQC_BEGIN
 223                 prog->globals.client->time = cl.time;
 224                 PRVM_G_FLOAT(OFS_PARM0) = pressed;
 225                 PRVM_G_FLOAT(OFS_PARM1) = key;
 226                 PRVM_ExecuteProgram(prog->funcoffsets.CSQC_InputEvent, "QC function CSQC_InputEvent is missing");
 227                 r = CSQC_RETURNVAL;
 228         CSQC_END
 229         return r;
 230 }
 231
 232 qboolean CL_VM_UpdateView (void)
 233 {
 234 //      vec3_t oldangles;
 235         if(!cl.csqc_loaded)
 236                 return false;
 237         CSQC_BEGIN
 238                 //VectorCopy(cl.viewangles, oldangles);
 239                 prog->globals.client->time = cl.time;
 240                 CSQC_SetGlobals();
 241                 // clear renderable entity and light lists to prevent crashes if the
 242                 // CSQC_UpdateView function does not call R_ClearScene as it should
 243                 r_refdef.numentities = 0;
 244                 r_refdef.numlights = 0;
 245                 PRVM_ExecuteProgram(prog->funcoffsets.CSQC_UpdateView, "QC function CSQC_UpdateView is missing");
 246                 //VectorCopy(oldangles, cl.viewangles);
 247         CSQC_END
 248         return true;
 249 }
 250
 251 extern sizebuf_t vm_tempstringsbuf;
 252 qboolean CL_VM_ConsoleCommand (const char *cmd)
 253 {
 254         int restorevm_tempstringsbuf_cursize;
 255         qboolean r;
 256         if(!cl.csqc_loaded)
 257                 return false;
 258         CSQC_BEGIN
 259                 prog->globals.client->time = cl.time;
 260                 restorevm_tempstringsbuf_cursize = vm_tempstringsbuf.cursize;
 261                 PRVM_G_INT(OFS_PARM0) = PRVM_SetTempString(cmd);
 262                 PRVM_ExecuteProgram(prog->funcoffsets.CSQC_ConsoleCommand, "QC function CSQC_ConsoleCommand is missing");
 263                 vm_tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
 264                 r = CSQC_RETURNVAL;
 265         CSQC_END
 266         return r;
 267 }
 268
 269 qboolean CL_VM_Parse_TempEntity (void)
 270 {
 271         int                     t;
 272         qboolean        r = false;
 273         if(!cl.csqc_loaded)
 274                 return false;
 275         CSQC_BEGIN
 276         if(prog->funcoffsets.CSQC_Parse_TempEntity)
 277         {
 278                 t = msg_readcount;
 279                 prog->globals.client->time = cl.time;
 280                 PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Parse_TempEntity, "QC function CSQC_Parse_TempEntity is missing");
 281                 r = CSQC_RETURNVAL;
 282                 if(!r)
 283                 {
 284                         msg_readcount = t;
 285                         msg_badread = false;
 286                 }
 287         }
 288         CSQC_END
 289         return r;
 290 }
 291
 292 void CL_VM_Parse_StuffCmd (const char *msg)
 293 {
 294         int restorevm_tempstringsbuf_cursize;
 295         if(msg[0] == 'c')
 296         if(msg[1] == 's')
 297         if(msg[2] == 'q')
 298         if(msg[3] == 'c')
 299         {
 300                 // if this is setting a csqc variable, deprotect csqc_progcrc
 301                 // temporarily so that it can be set by the cvar command,
 302                 // and then reprotect it afterwards
 303                 int crcflags = csqc_progcrc.flags;
 304                 int sizeflags = csqc_progcrc.flags;
 305                 csqc_progcrc.flags &= ~CVAR_READONLY;
 306                 csqc_progsize.flags &= ~CVAR_READONLY;
 307                 Cmd_ExecuteString (msg, src_command);
 308                 csqc_progcrc.flags = crcflags;
 309                 csqc_progsize.flags = sizeflags;
 310                 return;
 311         }
 312         if(!cl.csqc_loaded)
 313         {
 314                 Cbuf_AddText(msg);
 315                 return;
 316         }
 317         CSQC_BEGIN
 318         if(prog->funcoffsets.CSQC_Parse_StuffCmd)
 319         {
 320                 prog->globals.client->time = cl.time;
 321                 restorevm_tempstringsbuf_cursize = vm_tempstringsbuf.cursize;
 322                 PRVM_G_INT(OFS_PARM0) = PRVM_SetTempString(msg);
 323                 PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Parse_StuffCmd, "QC function CSQC_Parse_StuffCmd is missing");
 324                 vm_tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
 325         }
 326         else
 327                 Cbuf_AddText(msg);
 328         CSQC_END
 329 }
 330
 331 static void CL_VM_Parse_Print (const char *msg)
 332 {
 333         int restorevm_tempstringsbuf_cursize;
 334         prog->globals.client->time = cl.time;
 335         restorevm_tempstringsbuf_cursize = vm_tempstringsbuf.cursize;
 336         PRVM_G_INT(OFS_PARM0) = PRVM_SetTempString(msg);
 337         PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Parse_Print, "QC function CSQC_Parse_Print is missing");
 338         vm_tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
 339 }
 340
 341 void CSQC_AddPrintText (const char *msg)
 342 {
 343         size_t i;
 344         if(!cl.csqc_loaded)
 345         {
 346                 Con_Print(msg);
 347                 return;
 348         }
 349         CSQC_BEGIN
 350         if(prog->funcoffsets.CSQC_Parse_Print)
 351         {
 352                 // FIXME: is this bugged?
 353                 i = strlen(msg)-1;
 354                 if(msg[i] != '\n' && msg[i] != '\r')
 355                 {
 356                         if(strlen(cl.csqc_printtextbuf)+i >= MAX_INPUTLINE)
 357                         {
 358                                 CL_VM_Parse_Print(cl.csqc_printtextbuf);
 359                                 cl.csqc_printtextbuf[0] = 0;
 360                         }
 361                         else
 362                                 strlcat(cl.csqc_printtextbuf, msg, MAX_INPUTLINE);
 363                         return;
 364                 }
 365                 strlcat(cl.csqc_printtextbuf, msg, MAX_INPUTLINE);
 366                 CL_VM_Parse_Print(cl.csqc_printtextbuf);
 367                 cl.csqc_printtextbuf[0] = 0;
 368         }
 369         else
 370                 Con_Print(msg);
 371         CSQC_END
 372 }
 373
 374 void CL_VM_Parse_CenterPrint (const char *msg)
 375 {
 376         int restorevm_tempstringsbuf_cursize;
 377         if(!cl.csqc_loaded)
 378         {
 379                 SCR_CenterPrint((char*)msg);
 380                 return;
 381         }
 382         CSQC_BEGIN
 383         if(prog->funcoffsets.CSQC_Parse_CenterPrint)
 384         {
 385                 prog->globals.client->time = cl.time;
 386                 restorevm_tempstringsbuf_cursize = vm_tempstringsbuf.cursize;
 387                 PRVM_G_INT(OFS_PARM0) = PRVM_SetTempString(msg);
 388                 PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Parse_CenterPrint, "QC function CSQC_Parse_CenterPrint is missing");
 389                 vm_tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
 390         }
 391         else
 392                 SCR_CenterPrint((char*)msg);
 393         CSQC_END
 394 }
 395
 396 float CL_VM_Event (float event)         //[515]: needed ? I'd say "YES", but don't know for what :D
 397 {
 398         float r = 0;
 399         if(!cl.csqc_loaded)
 400                 return 0;
 401         CSQC_BEGIN
 402         if(prog->funcoffsets.CSQC_Event)
 403         {
 404                 prog->globals.client->time = cl.time;
 405                 PRVM_G_FLOAT(OFS_PARM0) = event;
 406                 PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Event, "QC function CSQC_Event is missing");
 407                 r = CSQC_RETURNVAL;
 408         }
 409         CSQC_END
 410         return r;
 411 }
 412
 413 void CSQC_ReadEntities (void)
 414 {
 415         unsigned short entnum, oldself, realentnum;
 416         CSQC_BEGIN
 417                 prog->globals.client->time = cl.time;
 418                 oldself = prog->globals.client->self;
 419                 while(1)
 420                 {
 421                         entnum = MSG_ReadShort();
 422                         if(!entnum || msg_badread)
 423                                 return;
 424                         realentnum = entnum & 0x7FFF;
 425                         prog->globals.client->self = cl.csqc_server2csqcentitynumber[realentnum];
 426                         if(entnum & 0x8000)
 427                         {
 428                                 if(prog->globals.client->self)
 429                                 {
 430                                         PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Ent_Remove, "QC function CSQC_Ent_Remove is missing");
 431                                         cl.csqc_server2csqcentitynumber[realentnum] = 0;
 432                                 }
 433                                 else
 434                                         Con_Printf("Smth bad happens in csqc...\n");    //[515]: never happens ?
 435                         }
 436                         else
 437                         {
 438                                 if(!prog->globals.client->self)
 439                                 {
 440                                         prvm_edict_t    *ed;
 441                                         ed = PRVM_ED_Alloc();
 442                                         ed->fields.client->entnum = realentnum;
 443                                         prog->globals.client->self = cl.csqc_server2csqcentitynumber[realentnum] = PRVM_EDICT_TO_PROG(ed);
 444                                         PRVM_G_FLOAT(OFS_PARM0) = 1;
 445                                 }
 446                                 else
 447                                         PRVM_G_FLOAT(OFS_PARM0) = 0;
 448                                 PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Ent_Update, "QC function CSQC_Ent_Update is missing");
 449                         }
 450                 }
 451                 prog->globals.client->self = oldself;
 452         CSQC_END
 453 }
 454
 455 void CL_VM_CB_BeginIncreaseEdicts(void)
 456 {
 457         int i;
 458         prvm_edict_t *ent;
 459
 460         // links don't survive the transition, so unlink everything
 461         for (i = 0, ent = prog->edicts;i < prog->max_edicts;i++, ent++)
 462         {
 463                 if (!ent->priv.server->free)
 464                         World_UnlinkEdict(prog->edicts + i);
 465                 memset(&ent->priv.server->areagrid, 0, sizeof(ent->priv.server->areagrid));
 466         }
 467         World_Clear(&cl.world);
 468 }
 469
 470 void CL_VM_CB_EndIncreaseEdicts(void)
 471 {
 472         int i;
 473         prvm_edict_t *ent;
 474
 475         // link every entity except world
 476         for (i = 1, ent = prog->edicts;i < prog->max_edicts;i++, ent++)
 477                 if (!ent->priv.server->free)
 478                         CL_LinkEdict(ent);
 479 }
 480
 481 void CL_VM_CB_InitEdict(prvm_edict_t *e)
 482 {
 483         e->priv.server->move = false; // don't move on first frame
 484 }
 485
 486 void CL_VM_CB_FreeEdict(prvm_edict_t *ed)
 487 {
 488         World_UnlinkEdict(ed);
 489         memset(ed->fields.client, 0, sizeof(*ed->fields.client));
 490 }
 491
 492 void CL_VM_CB_CountEdicts(void)
 493 {
 494         int             i;
 495         prvm_edict_t    *ent;
 496         int             active = 0, models = 0, solid = 0;
 497
 498         for (i=0 ; i<prog->num_edicts ; i++)
 499         {
 500                 ent = PRVM_EDICT_NUM(i);
 501                 if (ent->priv.server->free)
 502                         continue;
 503                 active++;
 504                 if (ent->fields.client->solid)
 505                         solid++;
 506                 if (ent->fields.client->model)
 507                         models++;
 508         }
 509
 510         Con_Printf("num_edicts:%3i\n", prog->num_edicts);
 511         Con_Printf("active    :%3i\n", active);
 512         Con_Printf("view      :%3i\n", models);
 513         Con_Printf("touch     :%3i\n", solid);
 514 }
 515
 516 qboolean CL_VM_CB_LoadEdict(prvm_edict_t *ent)
 517 {
 518         return true;
 519 }
 520
 521 void Cmd_ClearCsqcFuncs (void);
 522
 523 void CL_VM_Init (void)
 524 {
 525         unsigned char *csprogsdata;
 526         fs_offset_t csprogsdatasize;
 527         int csprogsdatacrc, requiredcrc;
 528         int requiredsize;
 529
 530         // reset csqc_progcrc after reading it, so that changing servers doesn't
 531         // expect csqc on the next server
 532         requiredcrc = csqc_progcrc.integer;
 533         requiredsize = csqc_progsize.integer;
 534         Cvar_SetValueQuick(&csqc_progcrc, -1);
 535         Cvar_SetValueQuick(&csqc_progsize, -1);
 536
 537         // if the server is not requesting a csprogs, then we're done here
 538         if (requiredcrc < 0)
 539                 return;
 540
 541         // see if the requested csprogs.dat file matches the requested crc
 542         csprogsdatacrc = -1;
 543         csprogsdata = FS_LoadFile(va("dlcache/%s.%i.%i", csqc_progname.string, requiredsize, requiredcrc), tempmempool, true, &csprogsdatasize);
 544         if (!csprogsdata)
 545                 csprogsdata = FS_LoadFile(csqc_progname.string, tempmempool, true, &csprogsdatasize);
 546         if (csprogsdata)
 547         {
 548                 csprogsdatacrc = CRC_Block(csprogsdata, csprogsdatasize);
 549                 Mem_Free(csprogsdata);
 550                 if (csprogsdatacrc != requiredcrc || csprogsdatasize != requiredsize)
 551                 {
 552                         if (cls.demoplayback)
 553                         {
 554                                 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);
 555                                 return;
 556                         }
 557                         else
 558                         {
 559                                 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);
 560                                 CL_Disconnect();
 561                                 return;
 562                         }
 563                 }
 564         }
 565         else
 566         {
 567                 if (requiredcrc >= 0)
 568                 {
 569                         if (cls.demoplayback)
 570                                 Con_Printf("CL_VM_Init: demo requires CSQC, but \"%s\" wasn't found\n", csqc_progname.string);
 571                         else
 572                                 Con_Printf("CL_VM_Init: server requires CSQC, but \"%s\" wasn't found\n", csqc_progname.string);
 573                         CL_Disconnect();
 574                 }
 575                 return;
 576         }
 577
 578         PRVM_Begin;
 579         PRVM_InitProg(PRVM_CLIENTPROG);
 580
 581         // allocate the mempools
 582         prog->progs_mempool = Mem_AllocPool(csqc_progname.string, 0, NULL);
 583         prog->headercrc = CL_PROGHEADER_CRC;
 584         prog->edictprivate_size = 0; // no private struct used
 585         prog->name = CL_NAME;
 586         prog->num_edicts = 1;
 587         prog->max_edicts = 512;
 588         prog->limit_edicts = CL_MAX_EDICTS;
 589         prog->reserved_edicts = 0;
 590         prog->edictprivate_size = sizeof(edict_engineprivate_t);
 591         prog->extensionstring = vm_sv_extensions;
 592         prog->builtins = vm_cl_builtins;
 593         prog->numbuiltins = vm_cl_numbuiltins;
 594         prog->begin_increase_edicts = CL_VM_CB_BeginIncreaseEdicts;
 595         prog->end_increase_edicts = CL_VM_CB_EndIncreaseEdicts;
 596         prog->init_edict = CL_VM_CB_InitEdict;
 597         prog->free_edict = CL_VM_CB_FreeEdict;
 598         prog->count_edicts = CL_VM_CB_CountEdicts;
 599         prog->load_edict = CL_VM_CB_LoadEdict;
 600         prog->init_cmd = VM_CL_Cmd_Init;
 601         prog->reset_cmd = VM_CL_Cmd_Reset;
 602         prog->error_cmd = CL_VM_Error;
 603
 604         PRVM_LoadProgs(csqc_progname.string, cl_numrequiredfunc, cl_required_func, 0, NULL, 0, NULL);
 605
 606         if (!prog->loaded)
 607         {
 608                 CL_VM_Error("CSQC ^2failed to load\n");
 609                 if(!sv.active)
 610                         CL_Disconnect();
 611                 return;
 612         }
 613
 614         Con_Printf("CSQC ^5loaded (crc=%i, size=%i)\n", csprogsdatacrc, (int)csprogsdatasize);
 615
 616         // check if OP_STATE animation is possible in this dat file
 617         if (prog->fieldoffsets.nextthink >= 0 && prog->fieldoffsets.frame >= 0 && prog->fieldoffsets.think >= 0 && prog->globaloffsets.self >= 0)
 618                 prog->flag |= PRVM_OP_STATE;
 619
 620         // set time
 621         prog->globals.client->time = cl.time;
 622
 623         prog->globals.client->mapname = PRVM_SetEngineString(cl.worldmodel->name);
 624         prog->globals.client->player_localentnum = cl.playerentity;
 625
 626         // call the prog init
 627         PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Init, "QC function CSQC_Init is missing");
 628
 629         PRVM_End;
 630         cl.csqc_loaded = true;
 631
 632         cl.csqc_vidvars.drawcrosshair = false;
 633         cl.csqc_vidvars.drawenginesbar = false;
 634 }
 635
 636 void CL_VM_ShutDown (void)
 637 {
 638         Cmd_ClearCsqcFuncs();
 639         Cvar_SetValueQuick(&csqc_progcrc, -1);
 640         Cvar_SetValueQuick(&csqc_progsize, -1);
 641         if(!cl.csqc_loaded)
 642                 return;
 643         CSQC_BEGIN
 644                 prog->globals.client->time = cl.time;
 645                 PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Shutdown, "QC function CSQC_Shutdown is missing");
 646                 PRVM_ResetProg();
 647         CSQC_END
 648         Con_Print("CSQC ^1unloaded\n");
 649         cl.csqc_loaded = false;
 650 }