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 already 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
  71 static mempool_t *csqc_mempool;
  72
  73 static void CL_VM_FindEdictFieldOffsets (void)
  74 {
  75         csqc_fieldoff_alpha                     = PRVM_ED_FindFieldOffset("alpha");
  76         csqc_fieldoff_scale                     = PRVM_ED_FindFieldOffset("scale");
  77         csqc_fieldoff_colormod          = PRVM_ED_FindFieldOffset("colormod");
  78         csqc_fieldoff_renderflags       = PRVM_ED_FindFieldOffset("renderflags");
  79         csqc_fieldoff_effects           = PRVM_ED_FindFieldOffset("effects");
  80         csqc_fieldoff_tag_entity        = PRVM_ED_FindFieldOffset("tag_entity");
  81         csqc_fieldoff_tag_index         = PRVM_ED_FindFieldOffset("tag_index");
  82
  83         CSQC_Parse_TempEntity           = PRVM_ED_FindFunction (CL_F_PARSE_TEMPENTITY);
  84         CSQC_Parse_StuffCmd                     = PRVM_ED_FindFunction (CL_F_PARSE_STUFFCMD);
  85         CSQC_Parse_Print                        = PRVM_ED_FindFunction (CL_F_PARSE_PRINT);
  86         CSQC_Parse_CenterPrint          = PRVM_ED_FindFunction (CL_F_PARSE_CENTERPRINT);
  87         CSQC_Ent_Update                         = PRVM_ED_FindFunction (CL_F_ENT_UPDATE);
  88         CSQC_Ent_Remove                         = PRVM_ED_FindFunction (CL_F_ENT_REMOVE);
  89         CSQC_Event                                      = PRVM_ED_FindFunction (CL_F_EVENT);
  90
  91         if(CSQC_Parse_Print)
  92         {
  93                 csqc_printtextbuf = (char *)Mem_Alloc(csqc_mempool, CSQC_PRINTBUFFERLEN);
  94                 csqc_printtextbuf[0] = 0;
  95         }
  96 }
  97
  98 void CL_VM_Error (const char *format, ...) DP_FUNC_PRINTF(1);
  99 void CL_VM_Error (const char *format, ...)      //[515]: hope it will be never executed =)
 100 {
 101         char errorstring[4096];
 102         va_list argptr;
 103
 104         va_start (argptr, format);
 105         dpvsnprintf (errorstring, sizeof(errorstring), format, argptr);
 106         va_end (argptr);
 107 //      Con_Printf( "CL_VM_Error: %s\n", errorstring );
 108
 109         PRVM_Crash();
 110         csqc_loaded = false;
 111         Mem_FreePool(&csqc_mempool);
 112
 113         Cvar_SetValueQuick(&csqc_progcrc, -1);
 114         Cvar_SetValueQuick(&csqc_progsize, -1);
 115
 116 //      Host_AbortCurrentFrame();       //[515]: hmmm... if server says it needs csqc then client MUST disconnect
 117         Host_Error(va("CL_VM_Error: %s", errorstring));
 118 }
 119
 120 model_t *CSQC_GetModelByIndex(int modelindex)
 121 {
 122         if(!modelindex)
 123                 return NULL;
 124         if (modelindex < 0)
 125         {
 126                 modelindex = -(modelindex+1);
 127                 if (modelindex < MAX_MODELS)
 128                         return cl.csqc_model_precache[modelindex];
 129         }
 130         else
 131         {
 132                 if(modelindex < MAX_MODELS)
 133                         return cl.model_precache[modelindex];
 134         }
 135         return NULL;
 136 }
 137
 138 model_t *CSQC_GetModelFromEntity(prvm_edict_t *ed)
 139 {
 140         if (!ed || ed->priv.server->free)
 141                 return NULL;
 142         return CSQC_GetModelByIndex((int)ed->fields.client->modelindex);
 143 }
 144
 145 //[515]: set globals before calling R_UpdateView, WEIRD CRAP
 146 static void CSQC_SetGlobals (void)
 147 {
 148         //extern cvar_t sv_accelerate, sv_friction, sv_gravity, sv_stopspeed, sv_maxspeed;
 149
 150         CSQC_BEGIN
 151                 *prog->time = cl.time;
 152                 prog->globals.client->frametime = cl.time - csqc_frametime;
 153                 csqc_frametime = cl.time;
 154                 prog->globals.client->servercommandframe = cl.servermovesequence;
 155                 prog->globals.client->clientcommandframe = cl.movesequence;
 156                 VectorCopy(cl.viewangles, prog->globals.client->input_angles);
 157                 VectorCopy(cl.viewangles, csqc_angles);
 158                 prog->globals.client->input_buttons = cl.cmd.buttons;
 159                 VectorSet(prog->globals.client->input_movevalues, cl.cmd.forwardmove, cl.cmd.sidemove, cl.cmd.upmove);
 160                 //VectorCopy(cl.movement_origin, csqc_origin);
 161                 Matrix4x4_OriginFromMatrix(&cl.entities[cl.viewentity].render.matrix, csqc_origin);
 162                 VectorCopy(csqc_origin, prog->globals.client->pmove_org);
 163                 prog->globals.client->maxclients = cl.maxclients;
 164                 //VectorCopy(cl.movement_velocity, prog->globals.client->pmove_vel);
 165                 VectorCopy(cl.velocity, prog->globals.client->pmove_vel);
 166         CSQC_END
 167 }
 168
 169 void CSQC_Predraw (prvm_edict_t *ed)
 170 {
 171         int b;
 172         if(!ed->fields.client->predraw)
 173                 return;
 174         b = prog->globals.client->self;
 175         prog->globals.client->self = PRVM_EDICT_TO_PROG(ed);
 176         PRVM_ExecuteProgram(ed->fields.client->predraw, "CSQC_Predraw: NULL function\n");
 177         prog->globals.client->self = b;
 178 }
 179
 180 void CSQC_Think (prvm_edict_t *ed)
 181 {
 182         int b;
 183         if(ed->fields.client->think)
 184         if(ed->fields.client->nextthink && ed->fields.client->nextthink <= *prog->time)
 185         {
 186                 ed->fields.client->nextthink = 0;
 187                 b = prog->globals.client->self;
 188                 prog->globals.client->self = PRVM_EDICT_TO_PROG(ed);
 189                 PRVM_ExecuteProgram(ed->fields.client->think, "CSQC_Think: NULL function\n");
 190                 prog->globals.client->self = b;
 191         }
 192 }
 193
 194 extern cvar_t cl_noplayershadow;
 195 qboolean CSQC_AddRenderEdict(prvm_edict_t *ed)
 196 {
 197         int i, renderflags;
 198         float scale;
 199         prvm_eval_t *val;
 200         entity_t *e;
 201         model_t *model;
 202         matrix4x4_t tagmatrix, matrix2;
 203
 204         model = CSQC_GetModelFromEntity(ed);
 205         if (!model)
 206                 return false;
 207
 208         e = CL_NewTempEntity();
 209         if (!e)
 210                 return false;
 211
 212         e->render.model = model;
 213         e->render.colormap = (int)ed->fields.client->colormap;
 214         e->render.frame = (int)ed->fields.client->frame;
 215         e->render.skinnum = (int)ed->fields.client->skin;
 216         e->render.effects |= e->render.model->flags2 & (EF_FULLBRIGHT | EF_ADDITIVE);
 217         scale = 1;
 218         // FIXME: renderflags should be in the cl_entvars_t
 219 #if 1
 220         renderflags = 0;
 221         if((val = PRVM_GETEDICTFIELDVALUE(ed, csqc_fieldoff_renderflags)) && val->_float)       renderflags = (int)val->_float;
 222 #else
 223         renderflags = (int)ed->fields.client->renderflags;
 224 #endif
 225
 226         if((val = PRVM_GETEDICTFIELDVALUE(ed, csqc_fieldoff_alpha)) && val->_float)             e->render.alpha = val->_float;
 227         if((val = PRVM_GETEDICTFIELDVALUE(ed, csqc_fieldoff_scale)) && val->_float)             e->render.scale = scale = val->_float;
 228         if((val = PRVM_GETEDICTFIELDVALUE(ed, csqc_fieldoff_colormod)) && VectorLength2(val->vector))   VectorCopy(val->vector, e->render.colormod);
 229         if((val = PRVM_GETEDICTFIELDVALUE(ed, csqc_fieldoff_effects)) && val->_float)   e->render.effects = (int)val->_float;
 230         if((val = PRVM_GETEDICTFIELDVALUE(ed, csqc_fieldoff_tag_entity)) && val->edict)
 231         {
 232                 int tagentity;
 233                 int tagindex = 0;
 234                 tagentity = val->edict;
 235                 if((val = PRVM_GETEDICTFIELDVALUE(ed, csqc_fieldoff_tag_index)) && val->_float)
 236                         tagindex = (int)val->_float;
 237                 // FIXME: calculate tag matrix
 238                 Matrix4x4_CreateIdentity(&tagmatrix);
 239         }
 240         else
 241                 Matrix4x4_CreateIdentity(&tagmatrix);
 242
 243         if (renderflags & RF_USEAXIS)
 244         {
 245                 vec3_t left;
 246                 VectorNegate(prog->globals.client->v_right, left);
 247                 Matrix4x4_FromVectors(&matrix2, prog->globals.client->v_forward, left, prog->globals.client->v_up, ed->fields.client->origin);
 248         }
 249         else
 250         {
 251                 vec3_t angles;
 252                 VectorCopy(ed->fields.client->angles, angles);
 253                 // if model is alias, reverse pitch direction
 254                 if (e->render.model->type == mod_alias)
 255                         angles[0] = -angles[0];
 256
 257                 // set up the render matrix
 258                 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);
 259         }
 260
 261         // FIXME: csqc has frame1/frame2/frame1time/frame2time/lerpfrac but this implementation's cl_entvars_t lacks those fields
 262         e->render.frame1 = e->render.frame = ed->fields.client->frame;
 263         e->render.frame1time = e->render.frame2time = 0;
 264         e->render.framelerp = 0;
 265
 266         // concat the matrices to make the entity relative to its tag
 267         Matrix4x4_Concat(&e->render.matrix, &tagmatrix, &matrix2);
 268         // make the other useful stuff
 269         CL_UpdateRenderEntity(&e->render);
 270
 271         i = 0;
 272         if((val = PRVM_GETEDICTFIELDVALUE(ed, csqc_fieldoff_renderflags)) && val->_float)
 273         {
 274                 i = (int)val->_float;
 275                 if(i & RF_VIEWMODEL)    e->render.flags |= RENDER_VIEWMODEL;
 276                 if(i & RF_EXTERNALMODEL)e->render.flags |= RENDER_EXTERIORMODEL;
 277                 if(i & RF_DEPTHHACK)    e->render.effects |= EF_NODEPTHTEST;
 278                 if(i & RF_ADDITIVE)             e->render.effects |= EF_ADDITIVE;
 279         }
 280
 281         // transparent stuff can't be lit during the opaque stage
 282         if (e->render.effects & (EF_ADDITIVE | EF_NODEPTHTEST) || e->render.alpha < 1)
 283                 e->render.flags |= RENDER_TRANSPARENT;
 284         // double sided rendering mode causes backfaces to be visible
 285         // (mostly useful on transparent stuff)
 286         if (e->render.effects & EF_DOUBLESIDED)
 287                 e->render.flags |= RENDER_NOCULLFACE;
 288         // either fullbright or lit
 289         if (!(e->render.effects & EF_FULLBRIGHT) && !r_fullbright.integer)
 290                 e->render.flags |= RENDER_LIGHT;
 291         // hide player shadow during intermission or nehahra movie
 292         if (!(e->render.effects & EF_NOSHADOW)
 293          && !(e->render.flags & (RENDER_VIEWMODEL | RENDER_TRANSPARENT))
 294          && (!(e->render.flags & RENDER_EXTERIORMODEL) || (!cl.intermission && cls.protocol != PROTOCOL_NEHAHRAMOVIE && !cl_noplayershadow.integer)))
 295                 e->render.flags |= RENDER_SHADOW;
 296
 297         return true;
 298 }
 299
 300 qboolean CL_VM_InputEvent (qboolean pressed, int key)
 301 {
 302         qboolean r;
 303         if(!csqc_loaded)
 304                 return false;
 305         CSQC_BEGIN
 306                 *prog->time = cl.time;
 307                 PRVM_G_FLOAT(OFS_PARM0) = pressed;
 308                 PRVM_G_FLOAT(OFS_PARM1) = key;
 309                 PRVM_ExecuteProgram (prog->globals.client->CSQC_InputEvent, CL_F_INPUTEVENT);
 310                 r = CSQC_RETURNVAL;
 311         CSQC_END
 312         return r;
 313 }
 314
 315 qboolean CL_VM_UpdateView (void)
 316 {
 317 //      vec3_t oldangles;
 318         if(!csqc_loaded)
 319                 return false;
 320         CSQC_BEGIN
 321                 //VectorCopy(cl.viewangles, oldangles);
 322                 *prog->time = cl.time;
 323                 CSQC_SetGlobals();
 324                 // clear renderable entity and light lists to prevent crashes if the
 325                 // CSQC_UpdateView function does not call R_ClearScene as it should
 326                 r_refdef.numentities = 0;
 327                 r_refdef.numlights = 0;
 328                 PRVM_ExecuteProgram (prog->globals.client->CSQC_UpdateView, CL_F_UPDATEVIEW);
 329                 //VectorCopy(oldangles, cl.viewangles);
 330         CSQC_END
 331         return true;
 332 }
 333
 334 extern sizebuf_t vm_tempstringsbuf;
 335 qboolean CL_VM_ConsoleCommand (const char *cmd)
 336 {
 337         int restorevm_tempstringsbuf_cursize;
 338         qboolean r;
 339         if(!csqc_loaded)
 340                 return false;
 341         CSQC_BEGIN
 342                 *prog->time = cl.time;
 343                 restorevm_tempstringsbuf_cursize = vm_tempstringsbuf.cursize;
 344                 PRVM_G_INT(OFS_PARM0) = PRVM_SetTempString(cmd);
 345                 PRVM_ExecuteProgram (prog->globals.client->CSQC_ConsoleCommand, CL_F_CONSOLECOMMAND);
 346                 vm_tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
 347                 r = CSQC_RETURNVAL;
 348         CSQC_END
 349         return r;
 350 }
 351
 352 qboolean CL_VM_Parse_TempEntity (void)
 353 {
 354         int                     t;
 355         qboolean        r;
 356         if(!csqc_loaded || !CSQC_Parse_TempEntity)
 357                 return false;
 358         t = msg_readcount;
 359         CSQC_BEGIN
 360                 *prog->time = cl.time;
 361                 PRVM_ExecuteProgram ((func_t)(CSQC_Parse_TempEntity - prog->functions), CL_F_PARSE_TEMPENTITY);
 362                 r = CSQC_RETURNVAL;
 363         CSQC_END
 364         if(!r)
 365         {
 366                 msg_readcount = t;
 367                 msg_badread = false;
 368         }
 369         return r;
 370 }
 371
 372 void CL_VM_Parse_StuffCmd (const char *msg)
 373 {
 374         int restorevm_tempstringsbuf_cursize;
 375         if(msg[0] == 'c')
 376         if(msg[1] == 's')
 377         if(msg[2] == 'q')
 378         if(msg[3] == 'c')
 379         {
 380                 // if this is setting a csqc variable, deprotect csqc_progcrc
 381                 // temporarily so that it can be set by the cvar command,
 382                 // and then reprotect it afterwards
 383                 int crcflags = csqc_progcrc.flags;
 384                 int sizeflags = csqc_progcrc.flags;
 385                 csqc_progcrc.flags &= ~CVAR_READONLY;
 386                 csqc_progsize.flags &= ~CVAR_READONLY;
 387                 Cmd_ExecuteString (msg, src_command);
 388                 csqc_progcrc.flags = crcflags;
 389                 csqc_progsize.flags = sizeflags;
 390                 return;
 391         }
 392         if(!csqc_loaded || !CSQC_Parse_StuffCmd)
 393         {
 394                 Cbuf_AddText(msg);
 395                 return;
 396         }
 397         CSQC_BEGIN
 398                 *prog->time = cl.time;
 399                 restorevm_tempstringsbuf_cursize = vm_tempstringsbuf.cursize;
 400                 PRVM_G_INT(OFS_PARM0) = PRVM_SetTempString(msg);
 401                 PRVM_ExecuteProgram ((func_t)(CSQC_Parse_StuffCmd - prog->functions), CL_F_PARSE_STUFFCMD);
 402                 vm_tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
 403         CSQC_END
 404 }
 405
 406 static void CL_VM_Parse_Print (const char *msg)
 407 {
 408         int restorevm_tempstringsbuf_cursize;
 409         CSQC_BEGIN
 410                 *prog->time = cl.time;
 411                 restorevm_tempstringsbuf_cursize = vm_tempstringsbuf.cursize;
 412                 PRVM_G_INT(OFS_PARM0) = PRVM_SetTempString(msg);
 413                 PRVM_ExecuteProgram ((func_t)(CSQC_Parse_Print - prog->functions), CL_F_PARSE_PRINT);
 414                 vm_tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
 415         CSQC_END
 416 }
 417
 418 void CSQC_AddPrintText (const char *msg)
 419 {
 420         size_t i;
 421         if(!csqc_loaded || !CSQC_Parse_Print)
 422         {
 423                 Con_Print(msg);
 424                 return;
 425         }
 426         // FIXME: is this bugged?
 427         i = strlen(msg)-1;
 428         if(msg[i] != '\n' && msg[i] != '\r')
 429         {
 430                 if(strlen(csqc_printtextbuf)+i >= CSQC_PRINTBUFFERLEN)
 431                 {
 432                         CL_VM_Parse_Print(csqc_printtextbuf);
 433                         csqc_printtextbuf[0] = 0;
 434                 }
 435                 else
 436                         strlcat(csqc_printtextbuf, msg, CSQC_PRINTBUFFERLEN);
 437                 return;
 438         }
 439         strlcat(csqc_printtextbuf, msg, CSQC_PRINTBUFFERLEN);
 440         CL_VM_Parse_Print(csqc_printtextbuf);
 441         csqc_printtextbuf[0] = 0;
 442 }
 443
 444 void CL_VM_Parse_CenterPrint (const char *msg)
 445 {
 446         int restorevm_tempstringsbuf_cursize;
 447         if(!csqc_loaded || !CSQC_Parse_CenterPrint)
 448         {
 449                 SCR_CenterPrint((char*)msg);
 450                 return;
 451         }
 452         CSQC_BEGIN
 453                 *prog->time = cl.time;
 454                 restorevm_tempstringsbuf_cursize = vm_tempstringsbuf.cursize;
 455                 PRVM_G_INT(OFS_PARM0) = PRVM_SetTempString(msg);
 456                 PRVM_ExecuteProgram ((func_t)(CSQC_Parse_CenterPrint - prog->functions), CL_F_PARSE_CENTERPRINT);
 457                 vm_tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
 458         CSQC_END
 459 }
 460
 461 float CL_VM_Event (float event)         //[515]: needed ? I'd say "YES", but don't know for what :D
 462 {
 463         float r;
 464         if(!csqc_loaded || !CSQC_Event)
 465                 return 0;
 466         CSQC_BEGIN
 467                 *prog->time = cl.time;
 468                 PRVM_G_FLOAT(OFS_PARM0) = event;
 469                 PRVM_ExecuteProgram ((func_t)(CSQC_Event - prog->functions), CL_F_EVENT);
 470                 r = CSQC_RETURNVAL;
 471         CSQC_END
 472         return r;
 473 }
 474
 475 void CSQC_ReadEntities (void)
 476 {
 477         unsigned short entnum, oldself, realentnum;
 478         CSQC_BEGIN
 479                 *prog->time = cl.time;
 480                 oldself = prog->globals.client->self;
 481                 while(1)
 482                 {
 483                         entnum = MSG_ReadShort();
 484                         if(!entnum)
 485                                 return;
 486                         realentnum = entnum & 0x7FFF;
 487                         prog->globals.client->self = csqc_sv2csqcents[realentnum];
 488                         if(entnum & 0x8000)
 489                         {
 490                                 if(prog->globals.client->self)
 491                                 {
 492                                         PRVM_ExecuteProgram((func_t)(CSQC_Ent_Remove - prog->functions), CL_F_ENT_REMOVE);
 493                                         csqc_sv2csqcents[realentnum] = 0;
 494                                 }
 495                                 else
 496                                         Con_Printf("Smth bad happens in csqc...\n");    //[515]: never happens ?
 497                         }
 498                         else
 499                         {
 500                                 if(!prog->globals.client->self)
 501                                 {
 502                                         prvm_edict_t    *ed;
 503                                         ed = PRVM_ED_Alloc();
 504                                         ed->fields.client->entnum = realentnum;
 505                                         prog->globals.client->self = csqc_sv2csqcents[realentnum] = PRVM_EDICT_TO_PROG(ed);
 506                                         PRVM_G_FLOAT(OFS_PARM0) = 1;
 507                                 }
 508                                 else
 509                                         PRVM_G_FLOAT(OFS_PARM0) = 0;
 510                                 PRVM_ExecuteProgram((func_t)(CSQC_Ent_Update - prog->functions), CL_F_ENT_UPDATE);
 511                         }
 512                 }
 513                 prog->globals.client->self = oldself;
 514         CSQC_END
 515 }
 516
 517 void Cmd_ClearCsqcFuncs (void);
 518
 519 void CL_VM_Init (void)
 520 {
 521         unsigned char *csprogsdata;
 522         fs_offset_t csprogsdatasize;
 523         int csprogsdatacrc, requiredcrc;
 524         int requiredsize;
 525
 526         // reset csqc_progcrc after reading it, so that changing servers doesn't
 527         // expect csqc on the next server
 528         requiredcrc = csqc_progcrc.integer;
 529         requiredsize = csqc_progsize.integer;
 530         Cvar_SetValueQuick(&csqc_progcrc, -1);
 531         Cvar_SetValueQuick(&csqc_progsize, -1);
 532
 533         csqc_loaded = false;
 534         memset(cl.csqc_model_precache, 0, sizeof(cl.csqc_model_precache));
 535         memset(&cl.csqc_vidvars, true, sizeof(csqc_vidvars_t));
 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         csqc_mempool = Mem_AllocPool("CSQC", 0, NULL);
 582
 583         // allocate the mempools
 584         prog->progs_mempool = Mem_AllocPool(csqc_progname.string, 0, NULL);
 585         prog->headercrc = CL_PROGHEADER_CRC;
 586         prog->edictprivate_size = 0; // no private struct used
 587         prog->name = CL_NAME;
 588         prog->num_edicts = 1;
 589         prog->limit_edicts = CL_MAX_EDICTS;
 590         prog->extensionstring = vm_cl_extensions;
 591         prog->builtins = vm_cl_builtins;
 592         prog->numbuiltins = vm_cl_numbuiltins;
 593         prog->init_cmd = VM_CL_Cmd_Init;
 594         prog->reset_cmd = VM_CL_Cmd_Reset;
 595         prog->error_cmd = CL_VM_Error;
 596
 597         PRVM_LoadProgs(csqc_progname.string, cl_numrequiredfunc, cl_required_func, 0, NULL);
 598
 599         if(prog->loaded)
 600                 Con_Printf("CSQC ^5loaded (crc=%i, size=%i)\n", csprogsdatacrc, (int)csprogsdatasize);
 601         else
 602         {
 603                 CL_VM_Error("CSQC ^2failed to load\n");
 604                 if(!sv.active)
 605                         CL_Disconnect();
 606                 return;
 607         }
 608
 609         //[515]: optional fields & funcs
 610         CL_VM_FindEdictFieldOffsets();
 611
 612         // set time
 613         *prog->time = cl.time;
 614         csqc_frametime = 0;
 615
 616         prog->globals.client->mapname = PRVM_SetEngineString(cl.worldmodel->name);
 617         prog->globals.client->player_localentnum = cl.playerentity;
 618
 619         // call the prog init
 620         PRVM_ExecuteProgram((func_t) (PRVM_ED_FindFunction(CL_F_INIT) - prog->functions), CL_F_INIT);
 621
 622         PRVM_End;
 623         csqc_loaded = true;
 624
 625         csqc_sv2csqcents = (unsigned short *)Mem_Alloc(csqc_mempool, MAX_EDICTS*sizeof(unsigned short));
 626         memset(csqc_sv2csqcents, 0, MAX_EDICTS*sizeof(unsigned short));
 627
 628         cl.csqc_vidvars.drawcrosshair = false;
 629         cl.csqc_vidvars.drawenginesbar = false;
 630 }
 631
 632 void CL_VM_ShutDown (void)
 633 {
 634         Cmd_ClearCsqcFuncs();
 635         Cvar_SetValueQuick(&csqc_progcrc, -1);
 636         Cvar_SetValueQuick(&csqc_progsize, -1);
 637         if(!csqc_loaded)
 638                 return;
 639         CSQC_BEGIN
 640                 *prog->time = cl.time;
 641                 PRVM_ExecuteProgram((func_t) (PRVM_ED_FindFunction(CL_F_SHUTDOWN) - prog->functions), CL_F_SHUTDOWN);
 642                 PRVM_ResetProg();
 643         CSQC_END
 644         Con_Print("CSQC ^1unloaded\n");
 645         csqc_loaded = false;
 646         Mem_FreePool(&csqc_mempool);
 647 }