csprogs.c

   1 #include "quakedef.h"
   2 #include "progsvm.h"
   3 #include "clprogdefs.h"
   4 #include "csprogs.h"
   5
   6 //============================================================================
   7 // Client prog handling
   8 //[515]: omg !!! optimize it ! a lot of hacks here and there also :P
   9
  10 #define CSQC_RETURNVAL  prog->globals.generic[OFS_RETURN]
  11 #define CSQC_BEGIN              csqc_tmpprog=prog;prog=0;PRVM_SetProg(PRVM_CLIENTPROG);
  12 #define CSQC_END                prog=csqc_tmpprog;
  13 static prvm_prog_t *csqc_tmpprog;
  14
  15 //[515]: these are required funcs
  16 #define CL_F_INIT                               "CSQC_Init"
  17 #define CL_F_INPUTEVENT                 "CSQC_InputEvent"
  18 #define CL_F_UPDATEVIEW                 "CSQC_UpdateView"
  19 #define CL_F_CONSOLECOMMAND             "CSQC_ConsoleCommand"
  20 #define CL_F_SHUTDOWN                   "CSQC_Shutdown"
  21
  22 //[515]: these are optional
  23 #define CL_F_PARSE_TEMPENTITY   "CSQC_Parse_TempEntity" //[515]: very helpfull when you want to create your own particles/decals/etc for effects that allready exist
  24 #define CL_F_PARSE_STUFFCMD             "CSQC_Parse_StuffCmd"
  25 #define CL_F_PARSE_PRINT                "CSQC_Parse_Print"
  26 #define CL_F_PARSE_CENTERPRINT  "CSQC_Parse_CenterPrint"
  27 #define CL_F_ENT_UPDATE                 "CSQC_Ent_Update"
  28 #define CL_F_ENT_REMOVE                 "CSQC_Ent_Remove"
  29 #define CL_F_EVENT                              "CSQC_Event"    //[515]: engine call this for its own needs
  30                                                                                                 //so csqc can do some things according to what engine it's running on
  31                                                                                                 //example: to say about edicts increase, whatever...
  32
  33 #define CSQC_PRINTBUFFERLEN             8192    //[515]: enough ?
  34
  35 static char *cl_required_func[] =
  36 {
  37         CL_F_INIT,
  38         CL_F_INPUTEVENT,
  39         CL_F_UPDATEVIEW,
  40         CL_F_CONSOLECOMMAND,
  41         CL_F_SHUTDOWN
  42 };
  43
  44 static int cl_numrequiredfunc = sizeof(cl_required_func) / sizeof(char*);
  45
  46 static char                             *csqc_printtextbuf = NULL;
  47 static unsigned short   *csqc_sv2csqcents;      //[515]: server entities numbers on client side. FIXME : make pointers instead of numbers ?
  48
  49 static mfunction_t      *CSQC_Parse_TempEntity;
  50 static mfunction_t      *CSQC_Parse_StuffCmd;
  51 static mfunction_t      *CSQC_Parse_Print;
  52 static mfunction_t      *CSQC_Parse_CenterPrint;
  53 static mfunction_t      *CSQC_Ent_Update;
  54 static mfunction_t      *CSQC_Ent_Remove;
  55 static mfunction_t      *CSQC_Event;
  56
  57 static int csqc_fieldoff_alpha;
  58 static int csqc_fieldoff_colormod;
  59 static int csqc_fieldoff_effects;
  60 int csqc_fieldoff_scale;
  61 int csqc_fieldoff_renderflags;
  62 int csqc_fieldoff_tag_entity;
  63 int csqc_fieldoff_tag_index;
  64 int csqc_fieldoff_dphitcontentsmask;
  65
  66 qboolean csqc_loaded = false;
  67
  68 vec3_t csqc_origin, csqc_angles;
  69 static double csqc_frametime = 0;
  70 int csqc_buttons;
  71
  72 static mempool_t *csqc_mempool;
  73
  74 static void CL_VM_FindEdictFieldOffsets (void)
  75 {
  76         csqc_fieldoff_alpha                     = PRVM_ED_FindFieldOffset("alpha");
  77         csqc_fieldoff_scale                     = PRVM_ED_FindFieldOffset("scale");
  78         csqc_fieldoff_colormod          = PRVM_ED_FindFieldOffset("colormod");
  79         csqc_fieldoff_renderflags       = PRVM_ED_FindFieldOffset("renderflags");
  80         csqc_fieldoff_effects           = PRVM_ED_FindFieldOffset("effects");
  81         csqc_fieldoff_tag_entity        = PRVM_ED_FindFieldOffset("tag_entity");
  82         csqc_fieldoff_tag_index         = PRVM_ED_FindFieldOffset("tag_index");
  83
  84         CSQC_Parse_TempEntity           = PRVM_ED_FindFunction (CL_F_PARSE_TEMPENTITY);
  85         CSQC_Parse_StuffCmd                     = PRVM_ED_FindFunction (CL_F_PARSE_STUFFCMD);
  86         CSQC_Parse_Print                        = PRVM_ED_FindFunction (CL_F_PARSE_PRINT);
  87         CSQC_Parse_CenterPrint          = PRVM_ED_FindFunction (CL_F_PARSE_CENTERPRINT);
  88         CSQC_Ent_Update                         = PRVM_ED_FindFunction (CL_F_ENT_UPDATE);
  89         CSQC_Ent_Remove                         = PRVM_ED_FindFunction (CL_F_ENT_REMOVE);
  90         CSQC_Event                                      = PRVM_ED_FindFunction (CL_F_EVENT);
  91
  92         if(CSQC_Parse_Print)
  93         {
  94                 csqc_printtextbuf = (char *)Mem_Alloc(csqc_mempool, CSQC_PRINTBUFFERLEN);
  95                 csqc_printtextbuf[0] = 0;
  96         }
  97 }
  98
  99 void CL_VM_Error (const char *format, ...) DP_FUNC_PRINTF(1);
 100 void CL_VM_Error (const char *format, ...)      //[515]: hope it will be never executed =)
 101 {
 102         char errorstring[4096];
 103         va_list argptr;
 104
 105         va_start (argptr, format);
 106         dpvsnprintf (errorstring, sizeof(errorstring), format, argptr);
 107         va_end (argptr);
 108 //      Con_Printf( "CL_VM_Error: %s\n", errorstring );
 109
 110         PRVM_Crash();
 111         csqc_loaded = false;
 112         Mem_FreePool(&csqc_mempool);
 113
 114         Cvar_SetValueQuick(&csqc_progcrc, -1);
 115         Cvar_SetValueQuick(&csqc_progsize, -1);
 116
 117 //      Host_AbortCurrentFrame();       //[515]: hmmm... if server says it needs csqc then client MUST disconnect
 118         Host_Error(va("CL_VM_Error: %s", errorstring));
 119 }
 120
 121 //[515]: set globals before calling R_UpdateView, WEIRD CRAP
 122 static void CSQC_SetGlobals (void)
 123 {
 124         //extern cvar_t sv_accelerate, sv_friction, sv_gravity, sv_stopspeed, sv_maxspeed;
 125
 126         CSQC_BEGIN
 127                 *prog->time = cl.time;
 128                 prog->globals.client->frametime = cl.time - csqc_frametime;
 129                 csqc_frametime = cl.time;
 130                 prog->globals.client->servercommandframe = cl.servermovesequence;
 131                 prog->globals.client->clientcommandframe = cl.movemessages;
 132                 VectorCopy(cl.viewangles, prog->globals.client->input_angles);
 133                 VectorCopy(cl.viewangles, csqc_angles);
 134                 prog->globals.client->input_buttons = csqc_buttons;
 135                 VectorSet(prog->globals.client->input_movevalues, cl.cmd.forwardmove, cl.cmd.sidemove, cl.cmd.upmove);
 136                 //VectorCopy(cl.movement_origin, csqc_origin);
 137                 Matrix4x4_OriginFromMatrix(&cl.entities[cl.viewentity].render.matrix, csqc_origin);
 138                 VectorCopy(csqc_origin, prog->globals.client->pmove_org);
 139                 prog->globals.client->maxclients = cl.maxclients;
 140                 //VectorCopy(cl.movement_velocity, prog->globals.client->pmove_vel);
 141                 VectorCopy(cl.velocity, prog->globals.client->pmove_vel);
 142         CSQC_END
 143 }
 144
 145 void CSQC_Predraw (prvm_edict_t *ed)
 146 {
 147         int b;
 148         if(!ed->fields.client->predraw)
 149                 return;
 150         b = prog->globals.client->self;
 151         prog->globals.client->self = PRVM_EDICT_TO_PROG(ed);
 152         PRVM_ExecuteProgram(ed->fields.client->predraw, "CSQC_Predraw: NULL function\n");
 153         prog->globals.client->self = b;
 154 }
 155
 156 void CSQC_Think (prvm_edict_t *ed)
 157 {
 158         int b;
 159         if(ed->fields.client->think)
 160         if(ed->fields.client->nextthink && ed->fields.client->nextthink <= *prog->time)
 161         {
 162                 ed->fields.client->nextthink = 0;
 163                 b = prog->globals.client->self;
 164                 prog->globals.client->self = PRVM_EDICT_TO_PROG(ed);
 165                 PRVM_ExecuteProgram(ed->fields.client->think, "CSQC_Think: NULL function\n");
 166                 prog->globals.client->self = b;
 167         }
 168 }
 169
 170 extern cvar_t cl_noplayershadow;
 171 qboolean CSQC_AddRenderEdict(prvm_edict_t *ed)
 172 {
 173         int i;
 174         prvm_eval_t *val;
 175         entity_t *e;
 176         matrix4x4_t tagmatrix, matrix2;
 177
 178         e = CL_NewTempEntity();
 179         if (!e)
 180                 return false;
 181
 182         i = (int)ed->fields.client->modelindex;
 183         if(i >= MAX_MODELS || i <= -MAX_MODELS) //[515]: make work as error ?
 184         {
 185                 Con_Print("CSQC_AddRenderEdict: modelindex >= MAX_MODELS\n");
 186                 ed->fields.client->modelindex = i = 0;
 187         }
 188
 189         // model setup and some modelflags
 190         if (i < MAX_MODELS)
 191                 e->render.model = cl.model_precache[e->state_current.modelindex];
 192         else
 193                 e->render.model = cl.csqc_model_precache[65536-e->state_current.modelindex];
 194
 195         if (!e->render.model)
 196                 return false;
 197
 198         e->render.colormap = (int)ed->fields.client->colormap;
 199         e->render.frame = (int)ed->fields.client->frame;
 200         e->render.skinnum = (int)ed->fields.client->skin;
 201         e->render.effects |= e->render.model->flags2 & (EF_FULLBRIGHT | EF_ADDITIVE);
 202
 203         if((val = PRVM_GETEDICTFIELDVALUE(ed, csqc_fieldoff_alpha)) && val->_float)             e->render.alpha = val->_float;
 204         if((val = PRVM_GETEDICTFIELDVALUE(ed, csqc_fieldoff_scale)) && val->_float)             e->render.scale = val->_float;
 205         if((val = PRVM_GETEDICTFIELDVALUE(ed, csqc_fieldoff_colormod)) && VectorLength2(val->vector))   VectorCopy(val->vector, e->render.colormod);
 206         if((val = PRVM_GETEDICTFIELDVALUE(ed, csqc_fieldoff_effects)) && val->_float)   e->render.effects = (int)val->_float;
 207         if((val = PRVM_GETEDICTFIELDVALUE(ed, csqc_fieldoff_tag_entity)) && val->edict)
 208         {
 209                 int tagentity;
 210                 int tagindex;
 211                 tagentity = val->edict;
 212                 if((val = PRVM_GETEDICTFIELDVALUE(ed, csqc_fieldoff_tag_index)) && val->_float)
 213                         tagindex = (int)val->_float;
 214                 // FIXME: calculate tag matrix
 215                 Matrix4x4_CreateIdentity(&tagmatrix);
 216         }
 217         else
 218                 Matrix4x4_CreateIdentity(&tagmatrix);
 219
 220         if(i & RF_USEAXIS)      //FIXME!!!
 221         {
 222                 vec3_t left;
 223                 VectorNegate(prog->globals.client->v_right, left);
 224                 Matrix4x4_FromVectors(&matrix2, prog->globals.client->v_forward, left, prog->globals.client->v_up, ed->fields.client->origin);
 225         }
 226         else
 227         {
 228                 vec3_t angles;
 229                 VectorCopy(ed->fields.client->angles, angles);
 230                 // if model is alias, reverse pitch direction
 231                 if (e->render.model->type == mod_alias)
 232                         angles[0] = -angles[0];
 233
 234                 // set up the render matrix
 235                 // FIXME: e->render.scale should go away
 236                 Matrix4x4_CreateFromQuakeEntity(&matrix2, ed->fields.client->origin[0], ed->fields.client->origin[1], ed->fields.client->origin[2], angles[0], angles[1], angles[2], e->render.scale);
 237         }
 238
 239         // FIXME: csqc has frame1/frame2/frame1time/frame2time/lerpfrac but this implementation's cl_entvars_t lacks those fields
 240         e->render.frame1 = e->render.frame = ed->fields.client->frame;
 241         e->render.frame1time = e->render.frame2time = 0;
 242         e->render.framelerp = 0;
 243
 244         // concat the matrices to make the entity relative to its tag
 245         Matrix4x4_Concat(&e->render.matrix, &tagmatrix, &matrix2);
 246         // make the other useful stuff
 247         CL_UpdateRenderEntity(&e->render);
 248
 249         i = 0;
 250         if((val = PRVM_GETEDICTFIELDVALUE(ed, csqc_fieldoff_renderflags)) && val->_float)
 251         {
 252                 i = (int)val->_float;
 253                 if(i & RF_VIEWMODEL)    e->render.flags |= RENDER_VIEWMODEL;
 254                 if(i & RF_EXTERNALMODEL)e->render.flags |= RENDER_EXTERIORMODEL;
 255                 if(i & RF_DEPTHHACK)    e->render.effects |= EF_NODEPTHTEST;
 256                 if(i & RF_ADDITIVE)             e->render.effects |= EF_ADDITIVE;
 257         }
 258
 259         // transparent stuff can't be lit during the opaque stage
 260         if (e->render.effects & (EF_ADDITIVE | EF_NODEPTHTEST) || e->render.alpha < 1)
 261                 e->render.flags |= RENDER_TRANSPARENT;
 262         // double sided rendering mode causes backfaces to be visible
 263         // (mostly useful on transparent stuff)
 264         if (e->render.effects & EF_DOUBLESIDED)
 265                 e->render.flags |= RENDER_NOCULLFACE;
 266         // either fullbright or lit
 267         if (!(e->render.effects & EF_FULLBRIGHT) && !r_fullbright.integer)
 268                 e->render.flags |= RENDER_LIGHT;
 269         // hide player shadow during intermission or nehahra movie
 270         if (!(e->render.effects & EF_NOSHADOW)
 271          && !(e->render.flags & (RENDER_VIEWMODEL | RENDER_TRANSPARENT))
 272          && (!(e->render.flags & RENDER_EXTERIORMODEL) || (!cl.intermission && cls.protocol != PROTOCOL_NEHAHRAMOVIE && !cl_noplayershadow.integer)))
 273                 e->render.flags |= RENDER_SHADOW;
 274
 275         return true;
 276 }
 277
 278 void CSQC_ClearCSQCEntities (void)
 279 {
 280         memset(cl.csqcentities_active, 0, sizeof(cl.csqcentities_active));
 281         cl.num_csqcentities = 0;
 282 }
 283
 284 void CL_ExpandCSQCEntities (int num);
 285
 286 qboolean CL_VM_InputEvent (qboolean pressed, int key)
 287 {
 288         qboolean r;
 289         if(!csqc_loaded)
 290                 return false;
 291         CSQC_BEGIN
 292                 *prog->time = cl.time;
 293                 PRVM_G_FLOAT(OFS_PARM0) = pressed;
 294                 PRVM_G_FLOAT(OFS_PARM1) = key;
 295                 PRVM_ExecuteProgram (prog->globals.client->CSQC_InputEvent, CL_F_INPUTEVENT);
 296                 r = CSQC_RETURNVAL;
 297         CSQC_END
 298         return r;
 299 }
 300
 301 qboolean CL_VM_UpdateView (void)
 302 {
 303 //      vec3_t oldangles;
 304         if(!csqc_loaded)
 305                 return false;
 306         CSQC_BEGIN
 307                 //VectorCopy(cl.viewangles, oldangles);
 308                 *prog->time = cl.time;
 309                 CSQC_SetGlobals();
 310                 cl.num_csqcentities = 0;
 311                 PRVM_ExecuteProgram (prog->globals.client->CSQC_UpdateView, CL_F_UPDATEVIEW);
 312                 //VectorCopy(oldangles, cl.viewangles);
 313         CSQC_END
 314         csqc_frame = false;
 315         return true;
 316 }
 317
 318 qboolean CL_VM_ConsoleCommand (const char *cmd)
 319 {
 320         qboolean r;
 321         if(!csqc_loaded)
 322                 return false;
 323         CSQC_BEGIN
 324                 *prog->time = cl.time;
 325                 PRVM_G_INT(OFS_PARM0) = PRVM_SetEngineString(cmd);
 326                 PRVM_ExecuteProgram (prog->globals.client->CSQC_ConsoleCommand, CL_F_CONSOLECOMMAND);
 327                 r = CSQC_RETURNVAL;
 328         CSQC_END
 329         return r;
 330 }
 331
 332 qboolean CL_VM_Parse_TempEntity (void)
 333 {
 334         int                     t;
 335         qboolean        r;
 336         if(!csqc_loaded || !CSQC_Parse_TempEntity)
 337                 return false;
 338         t = msg_readcount;
 339         CSQC_BEGIN
 340                 *prog->time = cl.time;
 341                 PRVM_ExecuteProgram ((func_t)(CSQC_Parse_TempEntity - prog->functions), CL_F_PARSE_TEMPENTITY);
 342                 r = CSQC_RETURNVAL;
 343         CSQC_END
 344         if(!r)
 345         {
 346                 msg_readcount = t;
 347                 msg_badread = false;
 348         }
 349         return r;
 350 }
 351
 352 void CL_VM_Parse_StuffCmd (const char *msg)
 353 {
 354         if(msg[0] == 'c')
 355         if(msg[1] == 's')
 356         if(msg[2] == 'q')
 357         if(msg[3] == 'c')
 358         {
 359                 // if this is setting a csqc variable, deprotect csqc_progcrc
 360                 // temporarily so that it can be set by the cvar command,
 361                 // and then reprotect it afterwards
 362                 int crcflags = csqc_progcrc.flags;
 363                 int sizeflags = csqc_progcrc.flags;
 364                 csqc_progcrc.flags &= ~CVAR_READONLY;
 365                 csqc_progsize.flags &= ~CVAR_READONLY;
 366                 Cmd_ExecuteString (msg, src_command);
 367                 csqc_progcrc.flags = crcflags;
 368                 csqc_progsize.flags = sizeflags;
 369                 return;
 370         }
 371         if(!csqc_loaded || !CSQC_Parse_StuffCmd)
 372         {
 373                 Cbuf_AddText(msg);
 374                 return;
 375         }
 376         CSQC_BEGIN
 377                 *prog->time = cl.time;
 378                 PRVM_G_INT(OFS_PARM0) = PRVM_SetEngineString(msg);
 379                 PRVM_ExecuteProgram ((func_t)(CSQC_Parse_StuffCmd - prog->functions), CL_F_PARSE_STUFFCMD);
 380         CSQC_END
 381 }
 382
 383 static void CL_VM_Parse_Print (const char *msg)
 384 {
 385         CSQC_BEGIN
 386                 *prog->time = cl.time;
 387                 PRVM_G_INT(OFS_PARM0) = PRVM_SetEngineString(msg);
 388                 PRVM_ExecuteProgram ((func_t)(CSQC_Parse_Print - prog->functions), CL_F_PARSE_PRINT);
 389         CSQC_END
 390 }
 391
 392 void CSQC_AddPrintText (const char *msg)
 393 {
 394         size_t i;
 395         if(!csqc_loaded || !CSQC_Parse_Print)
 396         {
 397                 Con_Print(msg);
 398                 return;
 399         }
 400         // FIXME: is this bugged?
 401         i = strlen(msg)-1;
 402         if(msg[i] != '\n' && msg[i] != '\r')
 403         {
 404                 if(strlen(csqc_printtextbuf)+i >= CSQC_PRINTBUFFERLEN)
 405                 {
 406                         CL_VM_Parse_Print(csqc_printtextbuf);
 407                         csqc_printtextbuf[0] = 0;
 408                 }
 409                 else
 410                         strlcat(csqc_printtextbuf, msg, CSQC_PRINTBUFFERLEN);
 411                 return;
 412         }
 413         strlcat(csqc_printtextbuf, msg, CSQC_PRINTBUFFERLEN);
 414         CL_VM_Parse_Print(csqc_printtextbuf);
 415         csqc_printtextbuf[0] = 0;
 416 }
 417
 418 void CL_VM_Parse_CenterPrint (const char *msg)
 419 {
 420         if(!csqc_loaded || !CSQC_Parse_CenterPrint)
 421         {
 422                 SCR_CenterPrint((char*)msg);
 423                 return;
 424         }
 425         CSQC_BEGIN
 426                 *prog->time = cl.time;
 427                 PRVM_G_INT(OFS_PARM0) = PRVM_SetEngineString(msg);
 428                 PRVM_ExecuteProgram ((func_t)(CSQC_Parse_CenterPrint - prog->functions), CL_F_PARSE_CENTERPRINT);
 429         CSQC_END
 430 }
 431
 432 float CL_VM_Event (float event)         //[515]: needed ? I'd say "YES", but don't know for what :D
 433 {
 434         float r;
 435         if(!csqc_loaded || !CSQC_Event)
 436                 return 0;
 437         CSQC_BEGIN
 438                 *prog->time = cl.time;
 439                 PRVM_G_FLOAT(OFS_PARM0) = event;
 440                 PRVM_ExecuteProgram ((func_t)(CSQC_Event - prog->functions), CL_F_EVENT);
 441                 r = CSQC_RETURNVAL;
 442         CSQC_END
 443         return r;
 444 }
 445
 446 void CSQC_ReadEntities (void)
 447 {
 448         unsigned short entnum, oldself, realentnum;
 449         CSQC_BEGIN
 450                 *prog->time = cl.time;
 451                 oldself = prog->globals.client->self;
 452                 while(1)
 453                 {
 454                         entnum = MSG_ReadShort();
 455                         if(!entnum)
 456                                 return;
 457                         realentnum = entnum & 0x7FFF;
 458                         prog->globals.client->self = csqc_sv2csqcents[realentnum];
 459                         if(entnum & 0x8000)
 460                         {
 461                                 if(prog->globals.client->self)
 462                                 {
 463                                         PRVM_ExecuteProgram((func_t)(CSQC_Ent_Remove - prog->functions), CL_F_ENT_REMOVE);
 464                                         csqc_sv2csqcents[realentnum] = 0;
 465                                 }
 466                                 else
 467                                         Con_Printf("Smth bad happens in csqc...\n");    //[515]: never happens ?
 468                         }
 469                         else
 470                         {
 471                                 if(!prog->globals.client->self)
 472                                 {
 473                                         prvm_edict_t    *ed;
 474                                         ed = PRVM_ED_Alloc();
 475                                         ed->fields.client->entnum = realentnum;
 476                                         prog->globals.client->self = csqc_sv2csqcents[realentnum] = PRVM_EDICT_TO_PROG(ed);
 477                                         PRVM_G_FLOAT(OFS_PARM0) = 1;
 478                                 }
 479                                 else
 480                                         PRVM_G_FLOAT(OFS_PARM0) = 0;
 481                                 PRVM_ExecuteProgram((func_t)(CSQC_Ent_Update - prog->functions), CL_F_ENT_UPDATE);
 482                         }
 483                 }
 484                 prog->globals.client->self = oldself;
 485         CSQC_END
 486 }
 487
 488 void Cmd_ClearCsqcFuncs (void);
 489
 490 void CL_VM_Init (void)
 491 {
 492         unsigned char *csprogsdata;
 493         fs_offset_t csprogsdatasize;
 494         int csprogsdatacrc, requiredcrc;
 495         int requiredsize;
 496         entity_t *ent;
 497
 498         // reset csqc_progcrc after reading it, so that changing servers doesn't
 499         // expect csqc on the next server
 500         requiredcrc = csqc_progcrc.integer;
 501         requiredsize = csqc_progsize.integer;
 502         Cvar_SetValueQuick(&csqc_progcrc, -1);
 503         Cvar_SetValueQuick(&csqc_progsize, -1);
 504
 505         csqc_loaded = false;
 506         memset(cl.csqc_model_precache, 0, sizeof(cl.csqc_model_precache));
 507         memset(&cl.csqc_vidvars, true, sizeof(csqc_vidvars_t));
 508
 509         // if the server is not requesting a csprogs, then we're done here
 510         if (requiredcrc < 0)
 511                 return;
 512
 513         // see if the requested csprogs.dat file matches the requested crc
 514         csprogsdatacrc = -1;
 515         csprogsdata = FS_LoadFile(va("dlcache/%s.%i.%i", csqc_progname.string, requiredsize, requiredcrc), tempmempool, true, &csprogsdatasize);
 516         if (!csprogsdata)
 517                 csprogsdata = FS_LoadFile(csqc_progname.string, tempmempool, true, &csprogsdatasize);
 518         if (csprogsdata)
 519         {
 520                 csprogsdatacrc = CRC_Block(csprogsdata, csprogsdatasize);
 521                 Mem_Free(csprogsdata);
 522                 if (csprogsdatacrc != requiredcrc || csprogsdatasize != requiredsize)
 523                 {
 524                         if (cls.demoplayback)
 525                         {
 526                                 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);
 527                                 return;
 528                         }
 529                         else
 530                         {
 531                                 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);
 532                                 CL_Disconnect();
 533                                 return;
 534                         }
 535                 }
 536         }
 537         else
 538         {
 539                 if (requiredcrc >= 0)
 540                 {
 541                         if (cls.demoplayback)
 542                                 Con_Printf("CL_VM_Init: demo requires CSQC, but \"%s\" wasn't found\n", csqc_progname.string);
 543                         else
 544                                 Con_Printf("CL_VM_Init: server requires CSQC, but \"%s\" wasn't found\n", csqc_progname.string);
 545                         CL_Disconnect();
 546                 }
 547                 return;
 548         }
 549
 550         PRVM_Begin;
 551         PRVM_InitProg(PRVM_CLIENTPROG);
 552
 553         csqc_mempool = Mem_AllocPool("CSQC", 0, NULL);
 554
 555         // allocate the mempools
 556         prog->progs_mempool = Mem_AllocPool(csqc_progname.string, 0, NULL);
 557         prog->headercrc = CL_PROGHEADER_CRC;
 558         prog->edictprivate_size = 0; // no private struct used
 559         prog->name = CL_NAME;
 560         prog->num_edicts = 1;
 561         prog->limit_edicts = CL_MAX_EDICTS;
 562         prog->extensionstring = vm_cl_extensions;
 563         prog->builtins = vm_cl_builtins;
 564         prog->numbuiltins = vm_cl_numbuiltins;
 565         prog->init_cmd = VM_CL_Cmd_Init;
 566         prog->reset_cmd = VM_CL_Cmd_Reset;
 567         prog->error_cmd = CL_VM_Error;
 568
 569         PRVM_LoadProgs(csqc_progname.string, cl_numrequiredfunc, cl_required_func, 0, NULL);
 570
 571         if(prog->loaded)
 572                 Con_Printf("CSQC ^5loaded (crc=%i, size=%i)\n", csprogsdatacrc, (int)csprogsdatasize);
 573         else
 574         {
 575                 CL_VM_Error("CSQC ^2failed to load\n");
 576                 if(!sv.active)
 577                         CL_Disconnect();
 578                 return;
 579         }
 580
 581         //[515]: optional fields & funcs
 582         CL_VM_FindEdictFieldOffsets();
 583
 584         // set time
 585         *prog->time = cl.time;
 586         csqc_frametime = 0;
 587
 588         prog->globals.client->mapname = PRVM_SetEngineString(cl.worldmodel->name);
 589         prog->globals.client->player_localentnum = cl.playerentity;
 590
 591         // call the prog init
 592         PRVM_ExecuteProgram((func_t) (PRVM_ED_FindFunction(CL_F_INIT) - prog->functions), CL_F_INIT);
 593
 594         PRVM_End;
 595         csqc_loaded = true;
 596
 597         csqc_sv2csqcents = (unsigned short *)Mem_Alloc(csqc_mempool, MAX_EDICTS*sizeof(unsigned short));
 598         memset(csqc_sv2csqcents, 0, MAX_EDICTS*sizeof(unsigned short));
 599
 600         cl.csqc_vidvars.drawcrosshair = false;
 601         cl.csqc_vidvars.drawenginesbar = false;
 602
 603         // local state
 604         ent = &cl.csqcentities[0];
 605         // entire entity array was cleared, so just fill in a few fields
 606         ent->state_current.active = true;
 607         ent->render.model = cl.worldmodel = cl.model_precache[1];
 608         ent->render.alpha = 1;
 609         ent->render.flags = RENDER_SHADOW | RENDER_LIGHT;
 610         Matrix4x4_CreateFromQuakeEntity(&ent->render.matrix, 0, 0, 0, 0, 0, 0, 1);
 611         CL_UpdateRenderEntity(&ent->render);
 612 }
 613
 614 void CL_VM_ShutDown (void)
 615 {
 616         Cmd_ClearCsqcFuncs();
 617         Cvar_SetValueQuick(&csqc_progcrc, -1);
 618         Cvar_SetValueQuick(&csqc_progsize, -1);
 619         if(!csqc_loaded)
 620                 return;
 621         CSQC_BEGIN
 622                 *prog->time = cl.time;
 623                 PRVM_ExecuteProgram((func_t) (PRVM_ED_FindFunction(CL_F_SHUTDOWN) - prog->functions), CL_F_SHUTDOWN);
 624                 PRVM_ResetProg();
 625         CSQC_END
 626         Con_Print("CSQC ^1unloaded\n");
 627         csqc_loaded = false;
 628         Mem_FreePool(&csqc_mempool);
 629 }