csprogs.c

   1 #include "quakedef.h"
   2 #include "progsvm.h"
   3 #include "clprogdefs.h"
   4 #include "csprogs.h"
   5 #include "cl_collision.h"
   6 #include "snd_main.h"
   7 #include "clvm_cmds.h"
   8 #include "prvm_cmds.h"
   9
  10 //============================================================================
  11 // Client prog handling
  12 //[515]: omg !!! optimize it ! a lot of hacks here and there also :P
  13
  14 #define CSQC_RETURNVAL  prog->globals.generic[OFS_RETURN]
  15 #define CSQC_BEGIN              csqc_tmpprog=prog;prog=0;PRVM_SetProg(PRVM_CLIENTPROG);
  16 #define CSQC_END                prog=csqc_tmpprog;
  17
  18 static prvm_prog_t *csqc_tmpprog;
  19
  20 void CL_VM_PreventInformationLeaks(void)
  21 {
  22         prvm_eval_t *val;
  23         if(!cl.csqc_loaded)
  24                 return;
  25         CSQC_BEGIN
  26                 VM_ClearTraceGlobals();
  27                 if ((val = PRVM_GLOBALFIELDVALUE(prog->globaloffsets.trace_networkentity)))
  28                         val->_float = 0;
  29         CSQC_END
  30 }
  31
  32 //[515]: these are required funcs
  33 static const char *cl_required_func[] =
  34 {
  35         "CSQC_Init",
  36         "CSQC_InputEvent",
  37         "CSQC_UpdateView",
  38         "CSQC_ConsoleCommand",
  39 };
  40
  41 static int cl_numrequiredfunc = sizeof(cl_required_func) / sizeof(char*);
  42
  43 void CL_VM_Error (const char *format, ...) DP_FUNC_PRINTF(1);
  44 void CL_VM_Error (const char *format, ...)      //[515]: hope it will be never executed =)
  45 {
  46         char errorstring[4096];
  47         va_list argptr;
  48
  49         va_start (argptr, format);
  50         dpvsnprintf (errorstring, sizeof(errorstring), format, argptr);
  51         va_end (argptr);
  52 //      Con_Printf( "CL_VM_Error: %s\n", errorstring );
  53
  54         PRVM_Crash();
  55         cl.csqc_loaded = false;
  56
  57         Cvar_SetValueQuick(&csqc_progcrc, -1);
  58         Cvar_SetValueQuick(&csqc_progsize, -1);
  59
  60 //      Host_AbortCurrentFrame();       //[515]: hmmm... if server says it needs csqc then client MUST disconnect
  61         Host_Error("CL_VM_Error: %s", errorstring);
  62 }
  63 void CL_VM_UpdateDmgGlobals (int dmg_take, int dmg_save, vec3_t dmg_origin)
  64 {
  65         prvm_eval_t *val;
  66         if(cl.csqc_loaded)
  67         {
  68                 CSQC_BEGIN
  69                 val = PRVM_GLOBALFIELDVALUE(prog->globaloffsets.dmg_take);
  70                 if(val)
  71                         val->_float = dmg_take;
  72                 val = PRVM_GLOBALFIELDVALUE(prog->globaloffsets.dmg_save);
  73                 if(val)
  74                         val->_float = dmg_save;
  75                 val = PRVM_GLOBALFIELDVALUE(prog->globaloffsets.dmg_origin);
  76                 if(val)
  77                 {
  78                         val->vector[0] = dmg_origin[0];
  79                         val->vector[1] = dmg_origin[1];
  80                         val->vector[2] = dmg_origin[2];
  81                 }
  82                 CSQC_END
  83         }
  84 }
  85
  86 void CSQC_UpdateNetworkTimes(double newtime, double oldtime)
  87 {
  88         prvm_eval_t *val;
  89         if(!cl.csqc_loaded)
  90                 return;
  91         CSQC_BEGIN
  92         if ((val = PRVM_GLOBALFIELDVALUE(prog->globaloffsets.servertime)))
  93                 val->_float = newtime;
  94         if ((val = PRVM_GLOBALFIELDVALUE(prog->globaloffsets.serverprevtime)))
  95                 val->_float = oldtime;
  96         if ((val = PRVM_GLOBALFIELDVALUE(prog->globaloffsets.serverdeltatime)))
  97                 val->_float = newtime - oldtime;
  98         CSQC_END
  99 }
 100
 101 //[515]: set globals before calling R_UpdateView, WEIRD CRAP
 102 static void CSQC_SetGlobals (void)
 103 {
 104         prvm_eval_t *val;
 105         CSQC_BEGIN
 106                 prog->globals.client->time = cl.time;
 107                 prog->globals.client->frametime = max(0, cl.time - cl.oldtime);
 108                 prog->globals.client->servercommandframe = cls.servermovesequence;
 109                 prog->globals.client->clientcommandframe = cl.movecmd[0].sequence;
 110                 VectorCopy(cl.viewangles, prog->globals.client->input_angles);
 111                 VectorCopy(cl.viewangles, cl.csqc_angles);
 112                 // // FIXME: this actually belongs into getinputstate().. [12/17/2007 Black]
 113                 prog->globals.client->input_buttons = cl.movecmd[0].buttons;
 114                 VectorSet(prog->globals.client->input_movevalues, cl.movecmd[0].forwardmove, cl.movecmd[0].sidemove, cl.movecmd[0].upmove);
 115                 //VectorCopy(cl.movement_origin, cl.csqc_origin);
 116                 Matrix4x4_OriginFromMatrix(&cl.entities[cl.viewentity].render.matrix, cl.csqc_origin);
 117
 118                 // LordHavoc: Spike says not to do this, but without pmove_org the
 119                 // CSQC is useless as it can't alter the view origin without
 120                 // completely replacing it
 121                 VectorCopy(cl.csqc_origin, prog->globals.client->pmove_org);
 122                 VectorCopy(cl.movement_velocity, prog->globals.client->pmove_vel);
 123
 124                 if ((val = PRVM_GLOBALFIELDVALUE(prog->globaloffsets.view_angles)))
 125                         VectorCopy(cl.viewangles, val->vector);
 126                 prog->globals.client->maxclients = cl.maxclients;
 127         CSQC_END
 128 }
 129
 130 void CSQC_Predraw (prvm_edict_t *ed)
 131 {
 132         int b;
 133         if(!ed->fields.client->predraw)
 134                 return;
 135         b = prog->globals.client->self;
 136         prog->globals.client->self = PRVM_EDICT_TO_PROG(ed);
 137         PRVM_ExecuteProgram(ed->fields.client->predraw, "CSQC_Predraw: NULL function\n");
 138         prog->globals.client->self = b;
 139 }
 140
 141 void CSQC_Think (prvm_edict_t *ed)
 142 {
 143         int b;
 144         if(ed->fields.client->think)
 145         if(ed->fields.client->nextthink && ed->fields.client->nextthink <= prog->globals.client->time)
 146         {
 147                 ed->fields.client->nextthink = 0;
 148                 b = prog->globals.client->self;
 149                 prog->globals.client->self = PRVM_EDICT_TO_PROG(ed);
 150                 PRVM_ExecuteProgram(ed->fields.client->think, "CSQC_Think: NULL function\n");
 151                 prog->globals.client->self = b;
 152         }
 153 }
 154
 155 extern cvar_t cl_noplayershadow;
 156 extern cvar_t r_equalize_entities_fullbright;
 157 qboolean CSQC_AddRenderEdict(prvm_edict_t *ed, int edictnum)
 158 {
 159         int renderflags;
 160         int c;
 161         float scale;
 162         prvm_eval_t *val;
 163         entity_render_t *entrender;
 164         dp_model_t *model;
 165         matrix4x4_t tagmatrix, matrix2;
 166
 167         model = CL_GetModelFromEdict(ed);
 168         if (!model)
 169                 return false;
 170
 171         if (edictnum)
 172         {
 173                 if (r_refdef.scene.numentities >= r_refdef.scene.maxentities)
 174                         return false;
 175                 entrender = cl.csqcrenderentities + edictnum;
 176                 r_refdef.scene.entities[r_refdef.scene.numentities++] = entrender;
 177                 entrender->entitynumber = edictnum + MAX_EDICTS;
 178                 //entrender->shadertime = 0; // shadertime was set by spawn()
 179                 entrender->flags = 0;
 180                 entrender->alpha = 1;
 181                 entrender->scale = 1;
 182                 VectorSet(entrender->colormod, 1, 1, 1);
 183                 VectorSet(entrender->glowmod, 1, 1, 1);
 184                 entrender->allowdecals = true;
 185         }
 186         else
 187         {
 188                 entrender = CL_NewTempEntity(0);
 189                 if (!entrender)
 190                         return false;
 191         }
 192
 193         if((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.userwavefunc_param0)))    entrender->userwavefunc_param[0] = val->_float;
 194         if((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.userwavefunc_param1)))    entrender->userwavefunc_param[1] = val->_float;
 195         if((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.userwavefunc_param2)))    entrender->userwavefunc_param[2] = val->_float;
 196         if((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.userwavefunc_param3)))    entrender->userwavefunc_param[3] = val->_float;
 197
 198         entrender->model = model;
 199         entrender->skinnum = (int)ed->fields.client->skin;
 200         entrender->effects |= entrender->model->effects;
 201         scale = 1;
 202         renderflags = 0;
 203         if((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.renderflags)) && val->_float)     renderflags = (int)val->_float;
 204         if((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.alpha)) && val->_float)           entrender->alpha = val->_float;
 205         if((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.scale)) && val->_float)           entrender->scale = scale = val->_float;
 206         if((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.colormod)) && VectorLength2(val->vector)) VectorCopy(val->vector, entrender->colormod);
 207         if((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.glowmod)) && VectorLength2(val->vector))  VectorCopy(val->vector, entrender->glowmod);
 208         if((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.effects)) && val->_float) entrender->effects |= (int)val->_float;
 209         if((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.tag_entity)) && val->edict)
 210         {
 211                 int tagentity;
 212                 int tagindex = 0;
 213                 tagentity = val->edict;
 214                 if((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.tag_index)) && val->_float)
 215                         tagindex = (int)val->_float;
 216                 CL_GetTagMatrix (&tagmatrix, PRVM_PROG_TO_EDICT(tagentity), tagindex);
 217         }
 218         else
 219                 Matrix4x4_CreateIdentity(&tagmatrix);
 220         if (!VectorLength2(entrender->colormod))
 221                 VectorSet(entrender->colormod, 1, 1, 1);
 222         if (!VectorLength2(entrender->glowmod))
 223                 VectorSet(entrender->glowmod, 1, 1, 1);
 224
 225         if (renderflags & RF_USEAXIS)
 226         {
 227                 vec3_t left;
 228                 VectorNegate(prog->globals.client->v_right, left);
 229                 Matrix4x4_FromVectors(&matrix2, prog->globals.client->v_forward, left, prog->globals.client->v_up, ed->fields.client->origin);
 230                 Matrix4x4_Scale(&matrix2, scale, 1);
 231         }
 232         else
 233         {
 234                 vec3_t angles;
 235                 VectorCopy(ed->fields.client->angles, angles);
 236                 // if model is alias, reverse pitch direction
 237                 if (entrender->model->type == mod_alias)
 238                         angles[0] = -angles[0];
 239
 240                 // set up the render matrix
 241                 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);
 242         }
 243
 244         // set up the animation data
 245         VM_GenerateFrameGroupBlend(ed->priv.server->framegroupblend, ed);
 246         VM_FrameBlendFromFrameGroupBlend(ed->priv.server->frameblend, ed->priv.server->framegroupblend, model);
 247         VM_UpdateEdictSkeleton(ed, model, ed->priv.server->frameblend);
 248         if ((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.shadertime))) entrender->shadertime = val->_float;
 249
 250         // concat the matrices to make the entity relative to its tag
 251         Matrix4x4_Concat(&entrender->matrix, &tagmatrix, &matrix2);
 252
 253         // transparent offset
 254         if ((renderflags & RF_USETRANSPARENTOFFSET) && (val = PRVM_GLOBALFIELDVALUE(prog->globaloffsets.transparent_offset)))
 255                 entrender->transparent_offset = val->_float;
 256
 257         if(renderflags)
 258         {
 259                 if(renderflags & RF_VIEWMODEL)  entrender->flags |= RENDER_VIEWMODEL | RENDER_NODEPTHTEST;
 260                 if(renderflags & RF_EXTERNALMODEL)entrender->flags |= RENDER_EXTERIORMODEL;
 261                 if(renderflags & RF_NOCULL)             entrender->flags |= RENDER_NOCULL;
 262                 if(renderflags & RF_DEPTHHACK)  entrender->flags |= RENDER_NODEPTHTEST;
 263                 if(renderflags & RF_ADDITIVE)           entrender->flags |= RENDER_ADDITIVE;
 264         }
 265
 266         c = (int)ed->fields.client->colormap;
 267         if (c <= 0)
 268                 CL_SetEntityColormapColors(entrender, -1);
 269         else if (c <= cl.maxclients && cl.scores != NULL)
 270                 CL_SetEntityColormapColors(entrender, cl.scores[c-1].colors);
 271         else
 272                 CL_SetEntityColormapColors(entrender, c);
 273
 274         entrender->flags &= ~(RENDER_SHADOW | RENDER_LIGHT | RENDER_NOSELFSHADOW);
 275         // either fullbright or lit
 276         if(!r_fullbright.integer)
 277         {
 278                 if (!(entrender->effects & EF_FULLBRIGHT) && !(renderflags & RF_FULLBRIGHT))
 279                         entrender->flags |= RENDER_LIGHT;
 280                 else if(r_equalize_entities_fullbright.integer)
 281                         entrender->flags |= RENDER_LIGHT | RENDER_EQUALIZE;
 282         }
 283         // hide player shadow during intermission or nehahra movie
 284         if (!(entrender->effects & (EF_NOSHADOW | EF_ADDITIVE | EF_NODEPTHTEST))
 285          &&  (entrender->alpha >= 1)
 286          && !(renderflags & RF_NOSHADOW)
 287          && !(entrender->flags & RENDER_VIEWMODEL)
 288          && (!(entrender->flags & RENDER_EXTERIORMODEL) || (!cl.intermission && cls.protocol != PROTOCOL_NEHAHRAMOVIE && !cl_noplayershadow.integer)))
 289                 entrender->flags |= RENDER_SHADOW;
 290         if (entrender->flags & RENDER_VIEWMODEL)
 291                 entrender->flags |= RENDER_NOSELFSHADOW;
 292         if (entrender->effects & EF_NOSELFSHADOW)
 293                 entrender->flags |= RENDER_NOSELFSHADOW;
 294         if (entrender->effects & EF_NODEPTHTEST)
 295                 entrender->flags |= RENDER_NODEPTHTEST;
 296         if (entrender->effects & EF_ADDITIVE)
 297                 entrender->flags |= RENDER_ADDITIVE;
 298         if (entrender->effects & EF_DOUBLESIDED)
 299                 entrender->flags |= RENDER_DOUBLESIDED;
 300
 301         // make the other useful stuff
 302         memcpy(entrender->framegroupblend, ed->priv.server->framegroupblend, sizeof(ed->priv.server->framegroupblend));
 303         CL_UpdateRenderEntity(entrender);
 304         // override animation data with full control
 305         memcpy(entrender->frameblend, ed->priv.server->frameblend, sizeof(ed->priv.server->frameblend));
 306         if (ed->priv.server->skeleton.relativetransforms)
 307                 entrender->skeleton = &ed->priv.server->skeleton;
 308         else
 309                 entrender->skeleton = NULL;
 310
 311         return true;
 312 }
 313
 314 qboolean CL_VM_InputEvent (qboolean down, int key, int ascii)
 315 {
 316         qboolean r;
 317
 318         if(!cl.csqc_loaded)
 319                 return false;
 320
 321         CSQC_BEGIN
 322                 if (!prog->funcoffsets.CSQC_InputEvent)
 323                         r = false;
 324                 else
 325                 {
 326                         prog->globals.client->time = cl.time;
 327                         prog->globals.client->self = cl.csqc_server2csqcentitynumber[cl.playerentity];
 328                         PRVM_G_FLOAT(OFS_PARM0) = !down; // 0 is down, 1 is up
 329                         PRVM_G_FLOAT(OFS_PARM1) = key;
 330                         PRVM_G_FLOAT(OFS_PARM2) = ascii;
 331                         PRVM_ExecuteProgram(prog->funcoffsets.CSQC_InputEvent, "QC function CSQC_InputEvent is missing");
 332                         r = CSQC_RETURNVAL != 0;
 333                 }
 334         CSQC_END
 335         return r;
 336 }
 337
 338 qboolean CL_VM_UpdateView (void)
 339 {
 340         vec3_t emptyvector;
 341         emptyvector[0] = 0;
 342         emptyvector[1] = 0;
 343         emptyvector[2] = 0;
 344 //      vec3_t oldangles;
 345         if(!cl.csqc_loaded)
 346                 return false;
 347         R_TimeReport("pre-UpdateView");
 348         CSQC_BEGIN
 349                 //VectorCopy(cl.viewangles, oldangles);
 350                 prog->globals.client->time = cl.time;
 351                 prog->globals.client->self = cl.csqc_server2csqcentitynumber[cl.playerentity];
 352                 CSQC_SetGlobals();
 353                 // clear renderable entity and light lists to prevent crashes if the
 354                 // CSQC_UpdateView function does not call R_ClearScene as it should
 355                 r_refdef.scene.numentities = 0;
 356                 r_refdef.scene.numlights = 0;
 357                 // pass in width and height as parameters (EXT_CSQC_1)
 358                 PRVM_G_FLOAT(OFS_PARM0) = vid.width;
 359                 PRVM_G_FLOAT(OFS_PARM1) = vid.height;
 360                 PRVM_ExecuteProgram(prog->funcoffsets.CSQC_UpdateView, "QC function CSQC_UpdateView is missing");
 361                 //VectorCopy(oldangles, cl.viewangles);
 362                 // Dresk : Reset Dmg Globals Here
 363                 CL_VM_UpdateDmgGlobals(0, 0, emptyvector);
 364         CSQC_END
 365         R_TimeReport("UpdateView");
 366         return true;
 367 }
 368
 369 extern sizebuf_t vm_tempstringsbuf;
 370 qboolean CL_VM_ConsoleCommand (const char *cmd)
 371 {
 372         int restorevm_tempstringsbuf_cursize;
 373         qboolean r = false;
 374         if(!cl.csqc_loaded)
 375                 return false;
 376         CSQC_BEGIN
 377         if (prog->funcoffsets.CSQC_ConsoleCommand)
 378         {
 379                 prog->globals.client->time = cl.time;
 380                 prog->globals.client->self = cl.csqc_server2csqcentitynumber[cl.playerentity];
 381                 restorevm_tempstringsbuf_cursize = vm_tempstringsbuf.cursize;
 382                 PRVM_G_INT(OFS_PARM0) = PRVM_SetTempString(cmd);
 383                 PRVM_ExecuteProgram(prog->funcoffsets.CSQC_ConsoleCommand, "QC function CSQC_ConsoleCommand is missing");
 384                 vm_tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
 385                 r = CSQC_RETURNVAL != 0;
 386         }
 387         CSQC_END
 388         return r;
 389 }
 390
 391 qboolean CL_VM_Parse_TempEntity (void)
 392 {
 393         int                     t;
 394         qboolean        r = false;
 395         if(!cl.csqc_loaded)
 396                 return false;
 397         CSQC_BEGIN
 398         if(prog->funcoffsets.CSQC_Parse_TempEntity)
 399         {
 400                 t = msg_readcount;
 401                 prog->globals.client->time = cl.time;
 402                 prog->globals.client->self = cl.csqc_server2csqcentitynumber[cl.playerentity];
 403                 PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Parse_TempEntity, "QC function CSQC_Parse_TempEntity is missing");
 404                 r = CSQC_RETURNVAL != 0;
 405                 if(!r)
 406                 {
 407                         msg_readcount = t;
 408                         msg_badread = false;
 409                 }
 410         }
 411         CSQC_END
 412         return r;
 413 }
 414
 415 void CL_VM_Parse_StuffCmd (const char *msg)
 416 {
 417         int restorevm_tempstringsbuf_cursize;
 418         if(msg[0] == 'c')
 419         if(msg[1] == 's')
 420         if(msg[2] == 'q')
 421         if(msg[3] == 'c')
 422         {
 423                 // if this is setting a csqc variable, deprotect csqc_progcrc
 424                 // temporarily so that it can be set by the cvar command,
 425                 // and then reprotect it afterwards
 426                 int crcflags = csqc_progcrc.flags;
 427                 int sizeflags = csqc_progcrc.flags;
 428                 csqc_progcrc.flags &= ~CVAR_READONLY;
 429                 csqc_progsize.flags &= ~CVAR_READONLY;
 430                 Cmd_ExecuteString (msg, src_command);
 431                 csqc_progcrc.flags = crcflags;
 432                 csqc_progsize.flags = sizeflags;
 433                 return;
 434         }
 435
 436         if(cls.demoplayback)
 437         if(!strncmp(msg, "curl --clear_autodownload\ncurl --pak --forthismap --as ", 55))
 438         {
 439                 // special handling for map download commands
 440                 // run these commands IMMEDIATELY, instead of waiting for a client frame
 441                 // that way, there is no black screen when playing back demos
 442                 // I know this is a really ugly hack, but I can't think of any better way
 443                 // FIXME find the actual CAUSE of this, and make demo playback WAIT
 444                 // until all maps are loaded, then remove this hack
 445
 446                 char buf[MAX_INPUTLINE];
 447                 const char *p, *q;
 448                 size_t l;
 449
 450                 p = msg;
 451
 452                 for(;;)
 453                 {
 454                         q = strchr(p, '\n');
 455                         if(q)
 456                                 l = q - p;
 457                         else
 458                                 l = strlen(p);
 459                         if(l > sizeof(buf) - 1)
 460                                 l = sizeof(buf) - 1;
 461                         strlcpy(buf, p, l + 1); // strlcpy needs a + 1 as it includes the newline!
 462
 463                         Cmd_ExecuteString(buf, src_command);
 464
 465                         p += l;
 466                         if(*p == '\n')
 467                                 ++p; // skip the newline and continue
 468                         else
 469                                 break; // end of string or overflow
 470                 }
 471                 Cmd_ExecuteString("curl --clear_autodownload", src_command); // don't inhibit CSQC loading
 472                 return;
 473         }
 474
 475         if(!cl.csqc_loaded)
 476         {
 477                 Cbuf_AddText(msg);
 478                 return;
 479         }
 480         CSQC_BEGIN
 481         if(prog->funcoffsets.CSQC_Parse_StuffCmd)
 482         {
 483                 prog->globals.client->time = cl.time;
 484                 prog->globals.client->self = cl.csqc_server2csqcentitynumber[cl.playerentity];
 485                 restorevm_tempstringsbuf_cursize = vm_tempstringsbuf.cursize;
 486                 PRVM_G_INT(OFS_PARM0) = PRVM_SetTempString(msg);
 487                 PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Parse_StuffCmd, "QC function CSQC_Parse_StuffCmd is missing");
 488                 vm_tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
 489         }
 490         else
 491                 Cbuf_AddText(msg);
 492         CSQC_END
 493 }
 494
 495 static void CL_VM_Parse_Print (const char *msg)
 496 {
 497         int restorevm_tempstringsbuf_cursize;
 498         prog->globals.client->time = cl.time;
 499         prog->globals.client->self = cl.csqc_server2csqcentitynumber[cl.playerentity];
 500         restorevm_tempstringsbuf_cursize = vm_tempstringsbuf.cursize;
 501         PRVM_G_INT(OFS_PARM0) = PRVM_SetTempString(msg);
 502         PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Parse_Print, "QC function CSQC_Parse_Print is missing");
 503         vm_tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
 504 }
 505
 506 void CSQC_AddPrintText (const char *msg)
 507 {
 508         size_t i;
 509         if(!cl.csqc_loaded)
 510         {
 511                 Con_Print(msg);
 512                 return;
 513         }
 514         CSQC_BEGIN
 515         if(prog->funcoffsets.CSQC_Parse_Print)
 516         {
 517                 // FIXME: is this bugged?
 518                 i = strlen(msg)-1;
 519                 if(msg[i] != '\n' && msg[i] != '\r')
 520                 {
 521                         if(strlen(cl.csqc_printtextbuf)+i >= MAX_INPUTLINE)
 522                         {
 523                                 CL_VM_Parse_Print(cl.csqc_printtextbuf);
 524                                 cl.csqc_printtextbuf[0] = 0;
 525                         }
 526                         else
 527                                 strlcat(cl.csqc_printtextbuf, msg, MAX_INPUTLINE);
 528                         return;
 529                 }
 530                 strlcat(cl.csqc_printtextbuf, msg, MAX_INPUTLINE);
 531                 CL_VM_Parse_Print(cl.csqc_printtextbuf);
 532                 cl.csqc_printtextbuf[0] = 0;
 533         }
 534         else
 535                 Con_Print(msg);
 536         CSQC_END
 537 }
 538
 539 void CL_VM_Parse_CenterPrint (const char *msg)
 540 {
 541         int restorevm_tempstringsbuf_cursize;
 542         if(!cl.csqc_loaded)
 543         {
 544                 SCR_CenterPrint(msg);
 545                 return;
 546         }
 547         CSQC_BEGIN
 548         if(prog->funcoffsets.CSQC_Parse_CenterPrint)
 549         {
 550                 prog->globals.client->time = cl.time;
 551                 prog->globals.client->self = cl.csqc_server2csqcentitynumber[cl.playerentity];
 552                 restorevm_tempstringsbuf_cursize = vm_tempstringsbuf.cursize;
 553                 PRVM_G_INT(OFS_PARM0) = PRVM_SetTempString(msg);
 554                 PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Parse_CenterPrint, "QC function CSQC_Parse_CenterPrint is missing");
 555                 vm_tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
 556         }
 557         else
 558                 SCR_CenterPrint(msg);
 559         CSQC_END
 560 }
 561
 562 void CL_VM_UpdateIntermissionState (int intermission)
 563 {
 564         prvm_eval_t *val;
 565         if(cl.csqc_loaded)
 566         {
 567                 CSQC_BEGIN
 568                 val = PRVM_GLOBALFIELDVALUE(prog->globaloffsets.intermission);
 569                 if(val)
 570                         val->_float = intermission;
 571                 CSQC_END
 572         }
 573 }
 574 void CL_VM_UpdateShowingScoresState (int showingscores)
 575 {
 576         prvm_eval_t *val;
 577         if(cl.csqc_loaded)
 578         {
 579                 CSQC_BEGIN
 580                 val = PRVM_GLOBALFIELDVALUE(prog->globaloffsets.sb_showscores);
 581                 if(val)
 582                         val->_float = showingscores;
 583                 CSQC_END
 584         }
 585 }
 586 qboolean CL_VM_Event_Sound(int sound_num, float volume, int channel, float attenuation, int ent, vec3_t pos)
 587 {
 588         qboolean r = false;
 589         if(cl.csqc_loaded)
 590         {
 591                 CSQC_BEGIN
 592                 if(prog->funcoffsets.CSQC_Event_Sound)
 593                 {
 594                         prog->globals.client->time = cl.time;
 595                         prog->globals.client->self = cl.csqc_server2csqcentitynumber[cl.playerentity];
 596                         PRVM_G_FLOAT(OFS_PARM0) = ent;
 597                         PRVM_G_FLOAT(OFS_PARM1) = channel;
 598                         PRVM_G_INT(OFS_PARM2) = PRVM_SetTempString(cl.sound_name[sound_num] );
 599                         PRVM_G_FLOAT(OFS_PARM3) = volume;
 600                         PRVM_G_FLOAT(OFS_PARM4) = attenuation;
 601                         VectorCopy(pos, PRVM_G_VECTOR(OFS_PARM5) );
 602                         PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Event_Sound, "QC function CSQC_Event_Sound is missing");
 603                         r = CSQC_RETURNVAL != 0;
 604                 }
 605                 CSQC_END
 606         }
 607
 608         return r;
 609 }
 610 void CL_VM_UpdateCoopDeathmatchGlobals (int gametype)
 611 {
 612         // Avoid global names for clean(er) coding
 613         int localcoop;
 614         int localdeathmatch;
 615
 616         prvm_eval_t *val;
 617         if(cl.csqc_loaded)
 618         {
 619                 if(gametype == GAME_COOP)
 620                 {
 621                         localcoop = 1;
 622                         localdeathmatch = 0;
 623                 }
 624                 else
 625                 if(gametype == GAME_DEATHMATCH)
 626                 {
 627                         localcoop = 0;
 628                         localdeathmatch = 1;
 629                 }
 630                 else
 631                 {
 632                         // How did the ServerInfo send an unknown gametype?
 633                         // Better just assign the globals as 0...
 634                         localcoop = 0;
 635                         localdeathmatch = 0;
 636                 }
 637                 CSQC_BEGIN
 638                 val = PRVM_GLOBALFIELDVALUE(prog->globaloffsets.coop);
 639                 if(val)
 640                         val->_float = localcoop;
 641                 val = PRVM_GLOBALFIELDVALUE(prog->globaloffsets.deathmatch);
 642                 if(val)
 643                         val->_float = localdeathmatch;
 644                 CSQC_END
 645         }
 646 }
 647 float CL_VM_Event (float event)         //[515]: needed ? I'd say "YES", but don't know for what :D
 648 {
 649         float r = 0;
 650         if(!cl.csqc_loaded)
 651                 return 0;
 652         CSQC_BEGIN
 653         if(prog->funcoffsets.CSQC_Event)
 654         {
 655                 prog->globals.client->time = cl.time;
 656                 prog->globals.client->self = cl.csqc_server2csqcentitynumber[cl.playerentity];
 657                 PRVM_G_FLOAT(OFS_PARM0) = event;
 658                 PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Event, "QC function CSQC_Event is missing");
 659                 r = CSQC_RETURNVAL;
 660         }
 661         CSQC_END
 662         return r;
 663 }
 664
 665 void CSQC_ReadEntities (void)
 666 {
 667         unsigned short entnum, oldself, realentnum;
 668         if(!cl.csqc_loaded)
 669         {
 670                 Host_Error ("CSQC_ReadEntities: CSQC is not loaded");
 671                 return;
 672         }
 673
 674         CSQC_BEGIN
 675                 prog->globals.client->time = cl.time;
 676                 oldself = prog->globals.client->self;
 677                 while(1)
 678                 {
 679                         entnum = MSG_ReadShort();
 680                         if(!entnum || msg_badread)
 681                                 break;
 682                         realentnum = entnum & 0x7FFF;
 683                         prog->globals.client->self = cl.csqc_server2csqcentitynumber[realentnum];
 684                         if(entnum & 0x8000)
 685                         {
 686                                 if(prog->globals.client->self)
 687                                 {
 688                                         PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Ent_Remove, "QC function CSQC_Ent_Remove is missing");
 689                                         cl.csqc_server2csqcentitynumber[realentnum] = 0;
 690                                 }
 691                                 else
 692                                 {
 693                                         // LordHavoc: removing an entity that is already gone on
 694                                         // the csqc side is possible for legitimate reasons (such
 695                                         // as a repeat of the remove message), so no warning is
 696                                         // needed
 697                                         //Con_Printf("Bad csqc_server2csqcentitynumber map\n"); //[515]: never happens ?
 698                                 }
 699                         }
 700                         else
 701                         {
 702                                 if(!prog->globals.client->self)
 703                                 {
 704                                         if(!prog->funcoffsets.CSQC_Ent_Spawn)
 705                                         {
 706                                                 prvm_edict_t    *ed;
 707                                                 ed = PRVM_ED_Alloc();
 708                                                 ed->fields.client->entnum = realentnum;
 709                                                 prog->globals.client->self = cl.csqc_server2csqcentitynumber[realentnum] = PRVM_EDICT_TO_PROG(ed);
 710                                         }
 711                                         else
 712                                         {
 713                                                 // entity( float entnum ) CSQC_Ent_Spawn;
 714                                                 // the qc function should set entnum, too (this way it also can return world [2/1/2008 Andreas]
 715                                                 PRVM_G_FLOAT(OFS_PARM0) = (float) realentnum;
 716                                                 // make sure no one gets wrong ideas
 717                                                 prog->globals.client->self = 0;
 718                                                 PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Ent_Spawn, "QC function CSQC_Ent_Spawn is missing");
 719                                                 prog->globals.client->self = cl.csqc_server2csqcentitynumber[realentnum] = PRVM_EDICT( PRVM_G_INT( OFS_RETURN ) );
 720                                         }
 721                                         PRVM_G_FLOAT(OFS_PARM0) = 1;
 722                                         PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Ent_Update, "QC function CSQC_Ent_Update is missing");
 723                                 }
 724                                 else {
 725                                         PRVM_G_FLOAT(OFS_PARM0) = 0;
 726                                         PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Ent_Update, "QC function CSQC_Ent_Update is missing");
 727                                 }
 728                         }
 729                 }
 730                 prog->globals.client->self = oldself;
 731         CSQC_END
 732 }
 733
 734 void CL_VM_CB_BeginIncreaseEdicts(void)
 735 {
 736         // links don't survive the transition, so unlink everything
 737         World_UnlinkAll(&cl.world);
 738 }
 739
 740 void CL_VM_CB_EndIncreaseEdicts(void)
 741 {
 742         int i;
 743         prvm_edict_t *ent;
 744
 745         // link every entity except world
 746         for (i = 1, ent = prog->edicts;i < prog->num_edicts;i++, ent++)
 747                 if (!ent->priv.server->free)
 748                         CL_LinkEdict(ent);
 749 }
 750
 751 void CL_VM_CB_InitEdict(prvm_edict_t *e)
 752 {
 753         int edictnum = PRVM_NUM_FOR_EDICT(e);
 754         entity_render_t *entrender;
 755         CL_ExpandCSQCRenderEntities(edictnum);
 756         entrender = cl.csqcrenderentities + edictnum;
 757         e->priv.server->move = false; // don't move on first frame
 758         memset(entrender, 0, sizeof(*entrender));
 759         entrender->shadertime = cl.time;
 760 }
 761
 762 extern void R_DecalSystem_Reset(decalsystem_t *decalsystem);
 763
 764 void CL_VM_CB_FreeEdict(prvm_edict_t *ed)
 765 {
 766         entity_render_t *entrender = cl.csqcrenderentities + PRVM_NUM_FOR_EDICT(ed);
 767         R_DecalSystem_Reset(&entrender->decalsystem);
 768         memset(entrender, 0, sizeof(*entrender));
 769         World_UnlinkEdict(ed);
 770         memset(ed->fields.client, 0, sizeof(*ed->fields.client));
 771         VM_RemoveEdictSkeleton(ed);
 772         World_Physics_RemoveFromEntity(&cl.world, ed);
 773         World_Physics_RemoveJointFromEntity(&cl.world, ed);
 774 }
 775
 776 void CL_VM_CB_CountEdicts(void)
 777 {
 778         int             i;
 779         prvm_edict_t    *ent;
 780         int             active = 0, models = 0, solid = 0;
 781
 782         for (i=0 ; i<prog->num_edicts ; i++)
 783         {
 784                 ent = PRVM_EDICT_NUM(i);
 785                 if (ent->priv.server->free)
 786                         continue;
 787                 active++;
 788                 if (ent->fields.client->solid)
 789                         solid++;
 790                 if (ent->fields.client->model)
 791                         models++;
 792         }
 793
 794         Con_Printf("num_edicts:%3i\n", prog->num_edicts);
 795         Con_Printf("active    :%3i\n", active);
 796         Con_Printf("view      :%3i\n", models);
 797         Con_Printf("touch     :%3i\n", solid);
 798 }
 799
 800 qboolean CL_VM_CB_LoadEdict(prvm_edict_t *ent)
 801 {
 802         return true;
 803 }
 804
 805 void Cmd_ClearCsqcFuncs (void);
 806
 807 // returns true if the packet is valid, false if end of file is reached
 808 // used for dumping the CSQC download into demo files
 809 qboolean MakeDownloadPacket(const char *filename, unsigned char *data, size_t len, int crc, int cnt, sizebuf_t *buf, int protocol)
 810 {
 811         int packetsize = buf->maxsize - 7; // byte short long
 812         int npackets = (len + packetsize - 1) / (packetsize);
 813
 814         if(protocol == PROTOCOL_QUAKEWORLD)
 815                 return false; // CSQC can't run in QW anyway
 816
 817         SZ_Clear(buf);
 818         if(cnt == 0)
 819         {
 820                 MSG_WriteByte(buf, svc_stufftext);
 821                 MSG_WriteString(buf, va("\ncl_downloadbegin %lu %s\n", (unsigned long)len, filename));
 822                 return true;
 823         }
 824         else if(cnt >= 1 && cnt <= npackets)
 825         {
 826                 unsigned long thispacketoffset = (cnt - 1) * packetsize;
 827                 int thispacketsize = len - thispacketoffset;
 828                 if(thispacketsize > packetsize)
 829                         thispacketsize = packetsize;
 830
 831                 MSG_WriteByte(buf, svc_downloaddata);
 832                 MSG_WriteLong(buf, thispacketoffset);
 833                 MSG_WriteShort(buf, thispacketsize);
 834                 SZ_Write(buf, data + thispacketoffset, thispacketsize);
 835
 836                 return true;
 837         }
 838         else if(cnt == npackets + 1)
 839         {
 840                 MSG_WriteByte(buf, svc_stufftext);
 841                 MSG_WriteString(buf, va("\ncl_downloadfinished %lu %d\n", (unsigned long)len, crc));
 842                 return true;
 843         }
 844         return false;
 845 }
 846
 847 void CL_VM_Init (void)
 848 {
 849         const char* csprogsfn;
 850         unsigned char *csprogsdata;
 851         fs_offset_t csprogsdatasize;
 852         int csprogsdatacrc, requiredcrc;
 853         int requiredsize;
 854         prvm_eval_t *val;
 855
 856         // reset csqc_progcrc after reading it, so that changing servers doesn't
 857         // expect csqc on the next server
 858         requiredcrc = csqc_progcrc.integer;
 859         requiredsize = csqc_progsize.integer;
 860         Cvar_SetValueQuick(&csqc_progcrc, -1);
 861         Cvar_SetValueQuick(&csqc_progsize, -1);
 862
 863         // if the server is not requesting a csprogs, then we're done here
 864         if (requiredcrc < 0)
 865                 return;
 866
 867         // see if the requested csprogs.dat file matches the requested crc
 868         csprogsdatacrc = -1;
 869         csprogsfn = va("dlcache/%s.%i.%i", csqc_progname.string, requiredsize, requiredcrc);
 870         csprogsdata = FS_LoadFile(csprogsfn, tempmempool, true, &csprogsdatasize);
 871         if (!csprogsdata)
 872         {
 873                 csprogsfn = csqc_progname.string;
 874                 csprogsdata = FS_LoadFile(csprogsfn, tempmempool, true, &csprogsdatasize);
 875         }
 876         if (csprogsdata)
 877         {
 878                 csprogsdatacrc = CRC_Block(csprogsdata, (size_t)csprogsdatasize);
 879                 if (csprogsdatacrc != requiredcrc || csprogsdatasize != requiredsize)
 880                 {
 881                         if (cls.demoplayback)
 882                         {
 883                                 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);
 884                                 // Mem_Free(csprogsdata);
 885                                 // return;
 886                                 // We WANT to continue here, and play the demo with different csprogs!
 887                                 // After all, this is just a warning. Sure things may go wrong from here.
 888                         }
 889                         else
 890                         {
 891                                 Mem_Free(csprogsdata);
 892                                 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);
 893                                 CL_Disconnect();
 894                                 return;
 895                         }
 896                 }
 897         }
 898         else
 899         {
 900                 if (requiredcrc >= 0)
 901                 {
 902                         if (cls.demoplayback)
 903                                 Con_Printf("CL_VM_Init: demo requires CSQC, but \"%s\" wasn't found\n", csqc_progname.string);
 904                         else
 905                                 Con_Printf("CL_VM_Init: server requires CSQC, but \"%s\" wasn't found\n", csqc_progname.string);
 906                         CL_Disconnect();
 907                 }
 908                 return;
 909         }
 910
 911         PRVM_Begin;
 912         PRVM_InitProg(PRVM_CLIENTPROG);
 913
 914         // allocate the mempools
 915         prog->progs_mempool = Mem_AllocPool(csqc_progname.string, 0, NULL);
 916         prog->headercrc = CL_PROGHEADER_CRC;
 917         prog->edictprivate_size = 0; // no private struct used
 918         prog->name = CL_NAME;
 919         prog->num_edicts = 1;
 920         prog->max_edicts = 512;
 921         prog->limit_edicts = CL_MAX_EDICTS;
 922         prog->reserved_edicts = 0;
 923         prog->edictprivate_size = sizeof(edict_engineprivate_t);
 924         // TODO: add a shared extension string #define and add real support for csqc extension strings [12/5/2007 Black]
 925         prog->extensionstring = vm_sv_extensions;
 926         prog->builtins = vm_cl_builtins;
 927         prog->numbuiltins = vm_cl_numbuiltins;
 928         prog->begin_increase_edicts = CL_VM_CB_BeginIncreaseEdicts;
 929         prog->end_increase_edicts = CL_VM_CB_EndIncreaseEdicts;
 930         prog->init_edict = CL_VM_CB_InitEdict;
 931         prog->free_edict = CL_VM_CB_FreeEdict;
 932         prog->count_edicts = CL_VM_CB_CountEdicts;
 933         prog->load_edict = CL_VM_CB_LoadEdict;
 934         prog->init_cmd = VM_CL_Cmd_Init;
 935         prog->reset_cmd = VM_CL_Cmd_Reset;
 936         prog->error_cmd = CL_VM_Error;
 937         prog->ExecuteProgram = CLVM_ExecuteProgram;
 938
 939         PRVM_LoadProgs(csprogsfn, cl_numrequiredfunc, cl_required_func, 0, NULL, 0, NULL);
 940
 941         if (!prog->loaded)
 942         {
 943                 CL_VM_Error("CSQC %s ^2failed to load\n", csprogsfn);
 944                 if(!sv.active)
 945                         CL_Disconnect();
 946                 Mem_Free(csprogsdata);
 947                 return;
 948         }
 949
 950         Con_DPrintf("CSQC %s ^5loaded (crc=%i, size=%i)\n", csprogsfn, csprogsdatacrc, (int)csprogsdatasize);
 951
 952         if(cls.demorecording)
 953         {
 954                 if(cls.demo_lastcsprogssize != csprogsdatasize || cls.demo_lastcsprogscrc != csprogsdatacrc)
 955                 {
 956                         int i;
 957                         static char buf[NET_MAXMESSAGE];
 958                         sizebuf_t sb;
 959                         unsigned char *demobuf; fs_offset_t demofilesize;
 960
 961                         sb.data = (unsigned char *) buf;
 962                         sb.maxsize = sizeof(buf);
 963                         i = 0;
 964
 965                         CL_CutDemo(&demobuf, &demofilesize);
 966                         while(MakeDownloadPacket(csqc_progname.string, csprogsdata, (size_t)csprogsdatasize, csprogsdatacrc, i++, &sb, cls.protocol))
 967                                 CL_WriteDemoMessage(&sb);
 968                         CL_PasteDemo(&demobuf, &demofilesize);
 969
 970                         cls.demo_lastcsprogssize = csprogsdatasize;
 971                         cls.demo_lastcsprogscrc = csprogsdatacrc;
 972                 }
 973         }
 974         Mem_Free(csprogsdata);
 975
 976         // check if OP_STATE animation is possible in this dat file
 977         if (prog->fieldoffsets.nextthink >= 0 && prog->fieldoffsets.frame >= 0 && prog->fieldoffsets.think >= 0 && prog->globaloffsets.self >= 0)
 978                 prog->flag |= PRVM_OP_STATE;
 979
 980         // set time
 981         prog->globals.client->time = cl.time;
 982         prog->globals.client->self = 0;
 983
 984         prog->globals.client->mapname = PRVM_SetEngineString(cl.worldname);
 985         prog->globals.client->player_localentnum = cl.playerentity;
 986
 987         // set map description (use world entity 0)
 988         val = PRVM_EDICTFIELDVALUE(prog->edicts, prog->fieldoffsets.message);
 989         if(val)
 990                 val->string = PRVM_SetEngineString(cl.worldmessage);
 991         VectorCopy(cl.world.mins, prog->edicts->fields.client->mins);
 992         VectorCopy(cl.world.maxs, prog->edicts->fields.client->maxs);
 993
 994         // call the prog init
 995         PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Init, "QC function CSQC_Init is missing");
 996
 997         PRVM_End;
 998         cl.csqc_loaded = true;
 999
1000         cl.csqc_vidvars.drawcrosshair = false;
1001         cl.csqc_vidvars.drawenginesbar = false;
1002
1003         // Update Coop and Deathmatch Globals (at this point the client knows them from ServerInfo)
1004         CL_VM_UpdateCoopDeathmatchGlobals(cl.gametype);
1005 }
1006
1007 void CL_VM_ShutDown (void)
1008 {
1009         Cmd_ClearCsqcFuncs();
1010         //Cvar_SetValueQuick(&csqc_progcrc, -1);
1011         //Cvar_SetValueQuick(&csqc_progsize, -1);
1012         if(!cl.csqc_loaded)
1013                 return;
1014         CSQC_BEGIN
1015                 prog->globals.client->time = cl.time;
1016                 prog->globals.client->self = 0;
1017                 if (prog->funcoffsets.CSQC_Shutdown)
1018                         PRVM_ExecuteProgram(prog->funcoffsets.CSQC_Shutdown, "QC function CSQC_Shutdown is missing");
1019                 PRVM_ResetProg();
1020         CSQC_END
1021         Con_DPrint("CSQC ^1unloaded\n");
1022         cl.csqc_loaded = false;
1023 }
1024
1025 qboolean CL_VM_GetEntitySoundOrigin(int entnum, vec3_t out)
1026 {
1027         prvm_edict_t *ed;
1028         dp_model_t *mod;
1029         matrix4x4_t matrix;
1030         qboolean r = 0;
1031
1032         CSQC_BEGIN;
1033
1034         // FIXME consider attachments here!
1035
1036         ed = PRVM_EDICT_NUM(entnum - MAX_EDICTS);
1037
1038         if(!ed->priv.required->free)
1039         {
1040                 mod = CL_GetModelFromEdict(ed);
1041                 VectorCopy(ed->fields.client->origin, out);
1042                 if(CL_GetTagMatrix (&matrix, ed, 0) == 0)
1043                         Matrix4x4_OriginFromMatrix(&matrix, out);
1044                 if (mod && mod->soundfromcenter)
1045                         VectorMAMAM(1.0f, out, 0.5f, mod->normalmins, 0.5f, mod->normalmaxs, out);
1046                 r = 1;
1047         }
1048
1049         CSQC_END;
1050
1051         return r;
1052 }
1053
1054 qboolean CL_VM_TransformView(int entnum, matrix4x4_t *viewmatrix, mplane_t *clipplane, vec3_t visorigin)
1055 {
1056         qboolean ret = false;
1057         prvm_edict_t *ed;
1058         prvm_eval_t *val, *valforward, *valright, *valup, *valendpos;
1059         vec3_t forward, left, up, origin, ang;
1060         matrix4x4_t mat, matq;
1061
1062         CSQC_BEGIN
1063                 ed = PRVM_EDICT_NUM(entnum);
1064                 // camera:
1065                 //   camera_transform
1066                 if((val = PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.camera_transform)) && val->function)
1067                 {
1068                         ret = true;
1069                         if(viewmatrix || clipplane || visorigin)
1070                         {
1071                                 valforward = PRVM_GLOBALFIELDVALUE(prog->globaloffsets.v_forward);
1072                                 valright = PRVM_GLOBALFIELDVALUE(prog->globaloffsets.v_right);
1073                                 valup = PRVM_GLOBALFIELDVALUE(prog->globaloffsets.v_up);
1074                                 valendpos = PRVM_GLOBALFIELDVALUE(prog->globaloffsets.trace_endpos);
1075                                 if(valforward && valright && valup && valendpos)
1076                                 {
1077                                         Matrix4x4_ToVectors(viewmatrix, forward, left, up, origin);
1078                                         AnglesFromVectors(ang, forward, up, false);
1079                                         prog->globals.client->time = cl.time;
1080                                         prog->globals.client->self = entnum;
1081                                         VectorCopy(origin, PRVM_G_VECTOR(OFS_PARM0));
1082                                         VectorCopy(ang, PRVM_G_VECTOR(OFS_PARM1));
1083                                         VectorCopy(forward, valforward->vector);
1084                                         VectorScale(left, -1, valright->vector);
1085                                         VectorCopy(up, valup->vector);
1086                                         VectorCopy(origin, valendpos->vector);
1087                                         PRVM_ExecuteProgram(val->function, "QC function e.camera_transform is missing");
1088                                         VectorCopy(PRVM_G_VECTOR(OFS_RETURN), origin);
1089                                         VectorCopy(valforward->vector, forward);
1090                                         VectorScale(valright->vector, -1, left);
1091                                         VectorCopy(valup->vector, up);
1092                                         VectorCopy(valendpos->vector, visorigin);
1093                                         Matrix4x4_Invert_Full(&mat, viewmatrix);
1094                                         Matrix4x4_FromVectors(viewmatrix, forward, left, up, origin);
1095                                         Matrix4x4_Concat(&matq, viewmatrix, &mat);
1096                                         Matrix4x4_TransformPositivePlane(&matq, clipplane->normal[0], clipplane->normal[1], clipplane->normal[2], clipplane->dist, &clipplane->normal[0]);
1097                                 }
1098                         }
1099                 }
1100         CSQC_END
1101
1102         return ret;
1103 }