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 model_t *CSQC_GetModelByIndex(int modelindex)
 122 {
 123         if(!modelindex)
 124                 return NULL;
 125         if (modelindex < 0)
 126         {
 127                 modelindex = -(modelindex+1);
 128                 if (modelindex < MAX_MODELS)
 129                         return cl.csqc_model_precache[modelindex];
 130         }
 131         else
 132         {
 133                 if(modelindex < MAX_MODELS)
 134                         return cl.model_precache[modelindex];
 135         }
 136         return NULL;
 137 }
 138
 139 model_t *CSQC_GetModelFromEntity(prvm_edict_t *ed)
 140 {
 141         if (!ed || ed->priv.server->free)
 142                 return NULL;
 143         return CSQC_GetModelByIndex((int)ed->fields.client->modelindex);
 144 }
 145
 146 //[515]: set globals before calling R_UpdateView, WEIRD CRAP
 147 static void CSQC_SetGlobals (void)
 148 {
 149         //extern cvar_t sv_accelerate, sv_friction, sv_gravity, sv_stopspeed, sv_maxspeed;
 150
 151         CSQC_BEGIN
 152                 *prog->time = cl.time;
 153                 prog->globals.client->frametime = cl.time - csqc_frametime;
 154                 csqc_frametime = cl.time;
 155                 prog->globals.client->servercommandframe = cl.servermovesequence;
 156                 prog->globals.client->clientcommandframe = cl.movemessages;
 157                 VectorCopy(cl.viewangles, prog->globals.client->input_angles);
 158                 VectorCopy(cl.viewangles, csqc_angles);
 159                 prog->globals.client->input_buttons = csqc_buttons;
 160                 VectorSet(prog->globals.client->input_movevalues, cl.cmd.forwardmove, cl.cmd.sidemove, cl.cmd.upmove);
 161                 //VectorCopy(cl.movement_origin, csqc_origin);
 162                 Matrix4x4_OriginFromMatrix(&cl.entities[cl.viewentity].render.matrix, csqc_origin);
 163                 VectorCopy(csqc_origin, prog->globals.client->pmove_org);
 164                 prog->globals.client->maxclients = cl.maxclients;
 165                 //VectorCopy(cl.movement_velocity, prog->globals.client->pmove_vel);
 166                 VectorCopy(cl.velocity, prog->globals.client->pmove_vel);
 167         CSQC_END
 168 }
 169
 170 void CSQC_Predraw (prvm_edict_t *ed)
 171 {
 172         int b;
 173         if(!ed->fields.client->predraw)
 174                 return;
 175         b = prog->globals.client->self;
 176         prog->globals.client->self = PRVM_EDICT_TO_PROG(ed);
 177         PRVM_ExecuteProgram(ed->fields.client->predraw, "CSQC_Predraw: NULL function\n");
 178         prog->globals.client->self = b;
 179 }
 180
 181 void CSQC_Think (prvm_edict_t *ed)
 182 {
 183         int b;
 184         if(ed->fields.client->think)
 185         if(ed->fields.client->nextthink && ed->fields.client->nextthink <= *prog->time)
 186         {
 187                 ed->fields.client->nextthink = 0;
 188                 b = prog->globals.client->self;
 189                 prog->globals.client->self = PRVM_EDICT_TO_PROG(ed);
 190                 PRVM_ExecuteProgram(ed->fields.client->think, "CSQC_Think: NULL function\n");
 191                 prog->globals.client->self = b;
 192         }
 193 }
 194
 195 extern cvar_t cl_noplayershadow;
 196 qboolean CSQC_AddRenderEdict(prvm_edict_t *ed)
 197 {
 198         int i;
 199         float scale;
 200         prvm_eval_t *val;
 201         entity_t *e;
 202         model_t *model;
 203         matrix4x4_t tagmatrix, matrix2;
 204
 205         model = CSQC_GetModelFromEntity(ed);
 206         if (!model)
 207                 return false;
 208
 209         e = CL_NewTempEntity();
 210         if (!e)
 211                 return false;
 212
 213         e->render.model = model;
 214         e->render.colormap = (int)ed->fields.client->colormap;
 215         e->render.frame = (int)ed->fields.client->frame;
 216         e->render.skinnum = (int)ed->fields.client->skin;
 217         e->render.effects |= e->render.model->flags2 & (EF_FULLBRIGHT | EF_ADDITIVE);
 218         scale = 1;
 219
 220         if((val = PRVM_GETEDICTFIELDVALUE(ed, csqc_fieldoff_alpha)) && val->_float)             e->render.alpha = val->_float;
 221         if((val = PRVM_GETEDICTFIELDVALUE(ed, csqc_fieldoff_scale)) && val->_float)             e->render.scale = scale = val->_float;
 222         if((val = PRVM_GETEDICTFIELDVALUE(ed, csqc_fieldoff_colormod)) && VectorLength2(val->vector))   VectorCopy(val->vector, e->render.colormod);
 223         if((val = PRVM_GETEDICTFIELDVALUE(ed, csqc_fieldoff_effects)) && val->_float)   e->render.effects = (int)val->_float;
 224         if((val = PRVM_GETEDICTFIELDVALUE(ed, csqc_fieldoff_tag_entity)) && val->edict)
 225         {
 226                 int tagentity;
 227                 int tagindex = 0;
 228                 tagentity = val->edict;
 229                 if((val = PRVM_GETEDICTFIELDVALUE(ed, csqc_fieldoff_tag_index)) && val->_float)
 230                         tagindex = (int)val->_float;
 231                 // FIXME: calculate tag matrix
 232                 Matrix4x4_CreateIdentity(&tagmatrix);
 233         }
 234         else
 235                 Matrix4x4_CreateIdentity(&tagmatrix);
 236
 237         if(i & RF_USEAXIS)      //FIXME!!!
 238         {
 239                 vec3_t left;
 240                 VectorNegate(prog->globals.client->v_right, left);
 241                 Matrix4x4_FromVectors(&matrix2, prog->globals.client->v_forward, left, prog->globals.client->v_up, ed->fields.client->origin);
 242         }
 243         else
 244         {
 245                 vec3_t angles;
 246                 VectorCopy(ed->fields.client->angles, angles);
 247                 // if model is alias, reverse pitch direction
 248                 if (e->render.model->type == mod_alias)
 249                         angles[0] = -angles[0];
 250
 251                 // set up the render matrix
 252                 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);
 253         }
 254
 255         // FIXME: csqc has frame1/frame2/frame1time/frame2time/lerpfrac but this implementation's cl_entvars_t lacks those fields
 256         e->render.frame1 = e->render.frame = ed->fields.client->frame;
 257         e->render.frame1time = e->render.frame2time = 0;
 258         e->render.framelerp = 0;
 259
 260         // concat the matrices to make the entity relative to its tag
 261         Matrix4x4_Concat(&e->render.matrix, &tagmatrix, &matrix2);
 262         // make the other useful stuff
 263         CL_UpdateRenderEntity(&e->render);
 264
 265         i = 0;
 266         if((val = PRVM_GETEDICTFIELDVALUE(ed, csqc_fieldoff_renderflags)) && val->_float)
 267         {
 268                 i = (int)val->_float;
 269                 if(i & RF_VIEWMODEL)    e->render.flags |= RENDER_VIEWMODEL;
 270                 if(i & RF_EXTERNALMODEL)e->render.flags |= RENDER_EXTERIORMODEL;
 271                 if(i & RF_DEPTHHACK)    e->render.effects |= EF_NODEPTHTEST;
 272                 if(i & RF_ADDITIVE)             e->render.effects |= EF_ADDITIVE;
 273         }
 274
 275         // transparent stuff can't be lit during the opaque stage
 276         if (e->render.effects & (EF_ADDITIVE | EF_NODEPTHTEST) || e->render.alpha < 1)
 277                 e->render.flags |= RENDER_TRANSPARENT;
 278         // double sided rendering mode causes backfaces to be visible
 279         // (mostly useful on transparent stuff)
 280         if (e->render.effects & EF_DOUBLESIDED)
 281                 e->render.flags |= RENDER_NOCULLFACE;
 282         // either fullbright or lit
 283         if (!(e->render.effects & EF_FULLBRIGHT) && !r_fullbright.integer)
 284                 e->render.flags |= RENDER_LIGHT;
 285         // hide player shadow during intermission or nehahra movie
 286         if (!(e->render.effects & EF_NOSHADOW)
 287          && !(e->render.flags & (RENDER_VIEWMODEL | RENDER_TRANSPARENT))
 288          && (!(e->render.flags & RENDER_EXTERIORMODEL) || (!cl.intermission && cls.protocol != PROTOCOL_NEHAHRAMOVIE && !cl_noplayershadow.integer)))
 289                 e->render.flags |= RENDER_SHADOW;
 290
 291         return true;
 292 }
 293
 294 qboolean CL_VM_InputEvent (qboolean pressed, int key)
 295 {
 296         qboolean r;
 297         if(!csqc_loaded)
 298                 return false;
 299         CSQC_BEGIN
 300                 *prog->time = cl.time;
 301                 PRVM_G_FLOAT(OFS_PARM0) = pressed;
 302                 PRVM_G_FLOAT(OFS_PARM1) = key;
 303                 PRVM_ExecuteProgram (prog->globals.client->CSQC_InputEvent, CL_F_INPUTEVENT);
 304                 r = CSQC_RETURNVAL;
 305         CSQC_END
 306         return r;
 307 }
 308
 309 qboolean CL_VM_UpdateView (void)
 310 {
 311 //      vec3_t oldangles;
 312         if(!csqc_loaded)
 313                 return false;
 314         CSQC_BEGIN
 315                 //VectorCopy(cl.viewangles, oldangles);
 316                 *prog->time = cl.time;
 317                 CSQC_SetGlobals();
 318                 r_refdef.numentities = 0;
 319                 PRVM_ExecuteProgram (prog->globals.client->CSQC_UpdateView, CL_F_UPDATEVIEW);
 320                 //VectorCopy(oldangles, cl.viewangles);
 321         CSQC_END
 322         return true;
 323 }
 324
 325 extern sizebuf_t vm_tempstringsbuf;
 326 qboolean CL_VM_ConsoleCommand (const char *cmd)
 327 {
 328         int restorevm_tempstringsbuf_cursize;
 329         qboolean r;
 330         if(!csqc_loaded)
 331                 return false;
 332         CSQC_BEGIN
 333                 *prog->time = cl.time;
 334                 restorevm_tempstringsbuf_cursize = vm_tempstringsbuf.cursize;
 335                 PRVM_G_INT(OFS_PARM0) = PRVM_SetTempString(cmd);
 336                 PRVM_ExecuteProgram (prog->globals.client->CSQC_ConsoleCommand, CL_F_CONSOLECOMMAND);
 337                 vm_tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
 338                 r = CSQC_RETURNVAL;
 339         CSQC_END
 340         return r;
 341 }
 342
 343 qboolean CL_VM_Parse_TempEntity (void)
 344 {
 345         int                     t;
 346         qboolean        r;
 347         if(!csqc_loaded || !CSQC_Parse_TempEntity)
 348                 return false;
 349         t = msg_readcount;
 350         CSQC_BEGIN
 351                 *prog->time = cl.time;
 352                 PRVM_ExecuteProgram ((func_t)(CSQC_Parse_TempEntity - prog->functions), CL_F_PARSE_TEMPENTITY);
 353                 r = CSQC_RETURNVAL;
 354         CSQC_END
 355         if(!r)
 356         {
 357                 msg_readcount = t;
 358                 msg_badread = false;
 359         }
 360         return r;
 361 }
 362
 363 void CL_VM_Parse_StuffCmd (const char *msg)
 364 {
 365         int restorevm_tempstringsbuf_cursize;
 366         if(msg[0] == 'c')
 367         if(msg[1] == 's')
 368         if(msg[2] == 'q')
 369         if(msg[3] == 'c')
 370         {
 371                 // if this is setting a csqc variable, deprotect csqc_progcrc
 372                 // temporarily so that it can be set by the cvar command,
 373                 // and then reprotect it afterwards
 374                 int crcflags = csqc_progcrc.flags;
 375                 int sizeflags = csqc_progcrc.flags;
 376                 csqc_progcrc.flags &= ~CVAR_READONLY;
 377                 csqc_progsize.flags &= ~CVAR_READONLY;
 378                 Cmd_ExecuteString (msg, src_command);
 379                 csqc_progcrc.flags = crcflags;
 380                 csqc_progsize.flags = sizeflags;
 381                 return;
 382         }
 383         if(!csqc_loaded || !CSQC_Parse_StuffCmd)
 384         {
 385                 Cbuf_AddText(msg);
 386                 return;
 387         }
 388         CSQC_BEGIN
 389                 *prog->time = cl.time;
 390                 restorevm_tempstringsbuf_cursize = vm_tempstringsbuf.cursize;
 391                 PRVM_G_INT(OFS_PARM0) = PRVM_SetTempString(msg);
 392                 PRVM_ExecuteProgram ((func_t)(CSQC_Parse_StuffCmd - prog->functions), CL_F_PARSE_STUFFCMD);
 393                 vm_tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
 394         CSQC_END
 395 }
 396
 397 static void CL_VM_Parse_Print (const char *msg)
 398 {
 399         int restorevm_tempstringsbuf_cursize;
 400         CSQC_BEGIN
 401                 *prog->time = cl.time;
 402                 restorevm_tempstringsbuf_cursize = vm_tempstringsbuf.cursize;
 403                 PRVM_G_INT(OFS_PARM0) = PRVM_SetTempString(msg);
 404                 PRVM_ExecuteProgram ((func_t)(CSQC_Parse_Print - prog->functions), CL_F_PARSE_PRINT);
 405                 vm_tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
 406         CSQC_END
 407 }
 408
 409 void CSQC_AddPrintText (const char *msg)
 410 {
 411         size_t i;
 412         if(!csqc_loaded || !CSQC_Parse_Print)
 413         {
 414                 Con_Print(msg);
 415                 return;
 416         }
 417         // FIXME: is this bugged?
 418         i = strlen(msg)-1;
 419         if(msg[i] != '\n' && msg[i] != '\r')
 420         {
 421                 if(strlen(csqc_printtextbuf)+i >= CSQC_PRINTBUFFERLEN)
 422                 {
 423                         CL_VM_Parse_Print(csqc_printtextbuf);
 424                         csqc_printtextbuf[0] = 0;
 425                 }
 426                 else
 427                         strlcat(csqc_printtextbuf, msg, CSQC_PRINTBUFFERLEN);
 428                 return;
 429         }
 430         strlcat(csqc_printtextbuf, msg, CSQC_PRINTBUFFERLEN);
 431         CL_VM_Parse_Print(csqc_printtextbuf);
 432         csqc_printtextbuf[0] = 0;
 433 }
 434
 435 void CL_VM_Parse_CenterPrint (const char *msg)
 436 {
 437         int restorevm_tempstringsbuf_cursize;
 438         if(!csqc_loaded || !CSQC_Parse_CenterPrint)
 439         {
 440                 SCR_CenterPrint((char*)msg);
 441                 return;
 442         }
 443         CSQC_BEGIN
 444                 *prog->time = cl.time;
 445                 restorevm_tempstringsbuf_cursize = vm_tempstringsbuf.cursize;
 446                 PRVM_G_INT(OFS_PARM0) = PRVM_SetTempString(msg);
 447                 PRVM_ExecuteProgram ((func_t)(CSQC_Parse_CenterPrint - prog->functions), CL_F_PARSE_CENTERPRINT);
 448                 vm_tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
 449         CSQC_END
 450 }
 451
 452 float CL_VM_Event (float event)         //[515]: needed ? I'd say "YES", but don't know for what :D
 453 {
 454         float r;
 455         if(!csqc_loaded || !CSQC_Event)
 456                 return 0;
 457         CSQC_BEGIN
 458                 *prog->time = cl.time;
 459                 PRVM_G_FLOAT(OFS_PARM0) = event;
 460                 PRVM_ExecuteProgram ((func_t)(CSQC_Event - prog->functions), CL_F_EVENT);
 461                 r = CSQC_RETURNVAL;
 462         CSQC_END
 463         return r;
 464 }
 465
 466 void CSQC_ReadEntities (void)
 467 {
 468         unsigned short entnum, oldself, realentnum;
 469         CSQC_BEGIN
 470                 *prog->time = cl.time;
 471                 oldself = prog->globals.client->self;
 472                 while(1)
 473                 {
 474                         entnum = MSG_ReadShort();
 475                         if(!entnum)
 476                                 return;
 477                         realentnum = entnum & 0x7FFF;
 478                         prog->globals.client->self = csqc_sv2csqcents[realentnum];
 479                         if(entnum & 0x8000)
 480                         {
 481                                 if(prog->globals.client->self)
 482                                 {
 483                                         PRVM_ExecuteProgram((func_t)(CSQC_Ent_Remove - prog->functions), CL_F_ENT_REMOVE);
 484                                         csqc_sv2csqcents[realentnum] = 0;
 485                                 }
 486                                 else
 487                                         Con_Printf("Smth bad happens in csqc...\n");    //[515]: never happens ?
 488                         }
 489                         else
 490                         {
 491                                 if(!prog->globals.client->self)
 492                                 {
 493                                         prvm_edict_t    *ed;
 494                                         ed = PRVM_ED_Alloc();
 495                                         ed->fields.client->entnum = realentnum;
 496                                         prog->globals.client->self = csqc_sv2csqcents[realentnum] = PRVM_EDICT_TO_PROG(ed);
 497                                         PRVM_G_FLOAT(OFS_PARM0) = 1;
 498                                 }
 499                                 else
 500                                         PRVM_G_FLOAT(OFS_PARM0) = 0;
 501                                 PRVM_ExecuteProgram((func_t)(CSQC_Ent_Update - prog->functions), CL_F_ENT_UPDATE);
 502                         }
 503                 }
 504                 prog->globals.client->self = oldself;
 505         CSQC_END
 506 }
 507
 508 void Cmd_ClearCsqcFuncs (void);
 509
 510 void CL_VM_Init (void)
 511 {
 512         unsigned char *csprogsdata;
 513         fs_offset_t csprogsdatasize;
 514         int csprogsdatacrc, requiredcrc;
 515         int requiredsize;
 516
 517         // reset csqc_progcrc after reading it, so that changing servers doesn't
 518         // expect csqc on the next server
 519         requiredcrc = csqc_progcrc.integer;
 520         requiredsize = csqc_progsize.integer;
 521         Cvar_SetValueQuick(&csqc_progcrc, -1);
 522         Cvar_SetValueQuick(&csqc_progsize, -1);
 523
 524         csqc_loaded = false;
 525         memset(cl.csqc_model_precache, 0, sizeof(cl.csqc_model_precache));
 526         memset(&cl.csqc_vidvars, true, sizeof(csqc_vidvars_t));
 527
 528         // if the server is not requesting a csprogs, then we're done here
 529         if (requiredcrc < 0)
 530                 return;
 531
 532         // see if the requested csprogs.dat file matches the requested crc
 533         csprogsdatacrc = -1;
 534         csprogsdata = FS_LoadFile(va("dlcache/%s.%i.%i", csqc_progname.string, requiredsize, requiredcrc), tempmempool, true, &csprogsdatasize);
 535         if (!csprogsdata)
 536                 csprogsdata = FS_LoadFile(csqc_progname.string, tempmempool, true, &csprogsdatasize);
 537         if (csprogsdata)
 538         {
 539                 csprogsdatacrc = CRC_Block(csprogsdata, csprogsdatasize);
 540                 Mem_Free(csprogsdata);
 541                 if (csprogsdatacrc != requiredcrc || csprogsdatasize != requiredsize)
 542                 {
 543                         if (cls.demoplayback)
 544                         {
 545                                 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);
 546                                 return;
 547                         }
 548                         else
 549                         {
 550                                 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);
 551                                 CL_Disconnect();
 552                                 return;
 553                         }
 554                 }
 555         }
 556         else
 557         {
 558                 if (requiredcrc >= 0)
 559                 {
 560                         if (cls.demoplayback)
 561                                 Con_Printf("CL_VM_Init: demo requires CSQC, but \"%s\" wasn't found\n", csqc_progname.string);
 562                         else
 563                                 Con_Printf("CL_VM_Init: server requires CSQC, but \"%s\" wasn't found\n", csqc_progname.string);
 564                         CL_Disconnect();
 565                 }
 566                 return;
 567         }
 568
 569         PRVM_Begin;
 570         PRVM_InitProg(PRVM_CLIENTPROG);
 571
 572         csqc_mempool = Mem_AllocPool("CSQC", 0, NULL);
 573
 574         // allocate the mempools
 575         prog->progs_mempool = Mem_AllocPool(csqc_progname.string, 0, NULL);
 576         prog->headercrc = CL_PROGHEADER_CRC;
 577         prog->edictprivate_size = 0; // no private struct used
 578         prog->name = CL_NAME;
 579         prog->num_edicts = 1;
 580         prog->limit_edicts = CL_MAX_EDICTS;
 581         prog->extensionstring = vm_cl_extensions;
 582         prog->builtins = vm_cl_builtins;
 583         prog->numbuiltins = vm_cl_numbuiltins;
 584         prog->init_cmd = VM_CL_Cmd_Init;
 585         prog->reset_cmd = VM_CL_Cmd_Reset;
 586         prog->error_cmd = CL_VM_Error;
 587
 588         PRVM_LoadProgs(csqc_progname.string, cl_numrequiredfunc, cl_required_func, 0, NULL);
 589
 590         if(prog->loaded)
 591                 Con_Printf("CSQC ^5loaded (crc=%i, size=%i)\n", csprogsdatacrc, (int)csprogsdatasize);
 592         else
 593         {
 594                 CL_VM_Error("CSQC ^2failed to load\n");
 595                 if(!sv.active)
 596                         CL_Disconnect();
 597                 return;
 598         }
 599
 600         //[515]: optional fields & funcs
 601         CL_VM_FindEdictFieldOffsets();
 602
 603         // set time
 604         *prog->time = cl.time;
 605         csqc_frametime = 0;
 606
 607         prog->globals.client->mapname = PRVM_SetEngineString(cl.worldmodel->name);
 608         prog->globals.client->player_localentnum = cl.playerentity;
 609
 610         // call the prog init
 611         PRVM_ExecuteProgram((func_t) (PRVM_ED_FindFunction(CL_F_INIT) - prog->functions), CL_F_INIT);
 612
 613         PRVM_End;
 614         csqc_loaded = true;
 615
 616         csqc_sv2csqcents = (unsigned short *)Mem_Alloc(csqc_mempool, MAX_EDICTS*sizeof(unsigned short));
 617         memset(csqc_sv2csqcents, 0, MAX_EDICTS*sizeof(unsigned short));
 618
 619         cl.csqc_vidvars.drawcrosshair = false;
 620         cl.csqc_vidvars.drawenginesbar = false;
 621 }
 622
 623 void CL_VM_ShutDown (void)
 624 {
 625         Cmd_ClearCsqcFuncs();
 626         Cvar_SetValueQuick(&csqc_progcrc, -1);
 627         Cvar_SetValueQuick(&csqc_progsize, -1);
 628         if(!csqc_loaded)
 629                 return;
 630         CSQC_BEGIN
 631                 *prog->time = cl.time;
 632                 PRVM_ExecuteProgram((func_t) (PRVM_ED_FindFunction(CL_F_SHUTDOWN) - prog->functions), CL_F_SHUTDOWN);
 633                 PRVM_ResetProg();
 634         CSQC_END
 635         Con_Print("CSQC ^1unloaded\n");
 636         csqc_loaded = false;
 637         Mem_FreePool(&csqc_mempool);
 638 }