cl_main.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20 // cl_main.c  -- client main loop
  21
  22 #include "quakedef.h"
  23 #include "cl_collision.h"
  24 #include "cl_video.h"
  25
  26 // we need to declare some mouse variables here, because the menu system
  27 // references them even when on a unix system.
  28
  29 // these two are not intended to be set directly
  30 cvar_t cl_name = {CVAR_SAVE, "_cl_name", "player"};
  31 cvar_t cl_color = {CVAR_SAVE, "_cl_color", "0"};
  32 cvar_t cl_pmodel = {CVAR_SAVE, "_cl_pmodel", "0"};
  33
  34 cvar_t cl_shownet = {0, "cl_shownet","0"};
  35 cvar_t cl_nolerp = {0, "cl_nolerp", "0"};
  36
  37 cvar_t cl_itembobheight = {0, "cl_itembobheight", "8"};
  38 cvar_t cl_itembobspeed = {0, "cl_itembobspeed", "0.5"};
  39
  40 cvar_t lookspring = {CVAR_SAVE, "lookspring","0"};
  41 cvar_t lookstrafe = {CVAR_SAVE, "lookstrafe","0"};
  42 cvar_t sensitivity = {CVAR_SAVE, "sensitivity","3", 1, 30};
  43
  44 cvar_t m_pitch = {CVAR_SAVE, "m_pitch","0.022"};
  45 cvar_t m_yaw = {CVAR_SAVE, "m_yaw","0.022"};
  46 cvar_t m_forward = {CVAR_SAVE, "m_forward","1"};
  47 cvar_t m_side = {CVAR_SAVE, "m_side","0.8"};
  48
  49 cvar_t freelook = {CVAR_SAVE, "freelook", "1"};
  50
  51 cvar_t r_draweffects = {0, "r_draweffects", "1"};
  52
  53 cvar_t cl_explosions = {CVAR_SAVE, "cl_explosions", "1"};
  54 cvar_t cl_stainmaps = {CVAR_SAVE, "cl_stainmaps", "1"};
  55
  56 cvar_t cl_beams_polygons = {CVAR_SAVE, "cl_beams_polygons", "1"};
  57 cvar_t cl_beams_relative = {CVAR_SAVE, "cl_beams_relative", "1"};
  58
  59 mempool_t *cl_scores_mempool;
  60 mempool_t *cl_refdef_mempool;
  61 mempool_t *cl_entities_mempool;
  62
  63 client_static_t cls;
  64 client_state_t  cl;
  65
  66 int cl_max_entities;
  67 int cl_max_static_entities;
  68 int cl_max_temp_entities;
  69 int cl_max_effects;
  70 int cl_max_beams;
  71 int cl_max_dlights;
  72 int cl_max_lightstyle;
  73 int cl_max_brushmodel_entities;
  74
  75 entity_t *cl_entities;
  76 qbyte *cl_entities_active;
  77 entity_t *cl_static_entities;
  78 entity_t *cl_temp_entities;
  79 cl_effect_t *cl_effects;
  80 beam_t *cl_beams;
  81 dlight_t *cl_dlights;
  82 lightstyle_t *cl_lightstyle;
  83 entity_render_t **cl_brushmodel_entities;
  84
  85 int cl_num_entities;
  86 int cl_num_static_entities;
  87 int cl_num_temp_entities;
  88 int cl_num_brushmodel_entities;
  89
  90 /*
  91 =====================
  92 CL_ClearState
  93
  94 =====================
  95 */
  96 void CL_ClearState (void)
  97 {
  98         int i;
  99
 100         if (!sv.active)
 101                 Host_ClearMemory ();
 102
 103         Mem_EmptyPool(cl_scores_mempool);
 104         Mem_EmptyPool(cl_entities_mempool);
 105
 106 // wipe the entire cl structure
 107         memset (&cl, 0, sizeof(cl));
 108
 109         SZ_Clear (&cls.message);
 110
 111         cl_num_entities = 0;
 112         cl_num_static_entities = 0;
 113         cl_num_temp_entities = 0;
 114         cl_num_brushmodel_entities = 0;
 115
 116         // tweak these if the game runs out
 117         cl_max_entities = MAX_EDICTS;
 118         cl_max_static_entities = 256;
 119         cl_max_temp_entities = 512;
 120         cl_max_effects = 256;
 121         cl_max_beams = 24;
 122         cl_max_dlights = MAX_DLIGHTS;
 123         cl_max_lightstyle = MAX_LIGHTSTYLES;
 124         cl_max_brushmodel_entities = MAX_EDICTS;
 125
 126         cl_entities = Mem_Alloc(cl_entities_mempool, cl_max_entities * sizeof(entity_t));
 127         cl_entities_active = Mem_Alloc(cl_entities_mempool, cl_max_entities * sizeof(qbyte));
 128         cl_static_entities = Mem_Alloc(cl_entities_mempool, cl_max_static_entities * sizeof(entity_t));
 129         cl_temp_entities = Mem_Alloc(cl_entities_mempool, cl_max_temp_entities * sizeof(entity_t));
 130         cl_effects = Mem_Alloc(cl_entities_mempool, cl_max_effects * sizeof(cl_effect_t));
 131         cl_beams = Mem_Alloc(cl_entities_mempool, cl_max_beams * sizeof(beam_t));
 132         cl_dlights = Mem_Alloc(cl_entities_mempool, cl_max_dlights * sizeof(dlight_t));
 133         cl_lightstyle = Mem_Alloc(cl_entities_mempool, cl_max_lightstyle * sizeof(lightstyle_t));
 134         cl_brushmodel_entities = Mem_Alloc(cl_entities_mempool, cl_max_brushmodel_entities * sizeof(entity_render_t *));
 135
 136         CL_Screen_NewMap();
 137
 138         CL_Particles_Clear();
 139
 140         // LordHavoc: have to set up the baseline info for alpha and other stuff
 141         for (i = 0;i < cl_max_entities;i++)
 142         {
 143                 ClearStateToDefault(&cl_entities[i].state_baseline);
 144                 ClearStateToDefault(&cl_entities[i].state_previous);
 145                 ClearStateToDefault(&cl_entities[i].state_current);
 146         }
 147
 148         CL_CGVM_Clear();
 149 }
 150
 151 /*
 152 =====================
 153 CL_Disconnect
 154
 155 Sends a disconnect message to the server
 156 This is also called on Host_Error, so it shouldn't cause any errors
 157 =====================
 158 */
 159 void CL_Disconnect (void)
 160 {
 161         if (cls.state == ca_dedicated)
 162                 return;
 163
 164 // stop sounds (especially looping!)
 165         S_StopAllSounds (true);
 166
 167         // clear contents blends
 168         cl.cshifts[0].percent = 0;
 169         cl.cshifts[1].percent = 0;
 170         cl.cshifts[2].percent = 0;
 171         cl.cshifts[3].percent = 0;
 172
 173         cl.worldmodel = NULL;
 174
 175         if (cls.demoplayback)
 176                 CL_StopPlayback ();
 177         else if (cls.state == ca_connected)
 178         {
 179                 if (cls.demorecording)
 180                         CL_Stop_f ();
 181
 182                 Con_DPrintf ("Sending clc_disconnect\n");
 183                 SZ_Clear (&cls.message);
 184                 MSG_WriteByte (&cls.message, clc_disconnect);
 185                 NET_SendUnreliableMessage (cls.netcon, &cls.message);
 186                 SZ_Clear (&cls.message);
 187                 NET_Close (cls.netcon);
 188                 cls.state = ca_disconnected; // prevent this code from executing again during Host_ShutdownServer
 189                 // if running a local server, shut it down
 190                 if (sv.active)
 191                         Host_ShutdownServer(false);
 192         }
 193         cls.state = ca_disconnected;
 194
 195         cls.demoplayback = cls.timedemo = false;
 196         cls.signon = 0;
 197 }
 198
 199 void CL_Disconnect_f (void)
 200 {
 201         CL_Disconnect ();
 202         if (sv.active)
 203                 Host_ShutdownServer (false);
 204 }
 205
 206
 207
 208
 209 /*
 210 =====================
 211 CL_EstablishConnection
 212
 213 Host should be either "local" or a net address to be passed on
 214 =====================
 215 */
 216 void CL_EstablishConnection (char *host)
 217 {
 218         if (cls.state == ca_dedicated)
 219                 return;
 220
 221         if (cls.demoplayback)
 222                 return;
 223
 224         CL_Disconnect ();
 225
 226         cls.netcon = NET_Connect (host);
 227         if (!cls.netcon)
 228                 Host_Error ("CL_Connect: connect failed\n");
 229         Con_DPrintf ("CL_EstablishConnection: connected to %s\n", host);
 230
 231         cls.demonum = -1;                       // not in the demo loop now
 232         cls.state = ca_connected;
 233         cls.signon = 0;                         // need all the signon messages before playing
 234
 235         CL_ClearState ();
 236 }
 237
 238 /*
 239 ==============
 240 CL_PrintEntities_f
 241 ==============
 242 */
 243 static void CL_PrintEntities_f (void)
 244 {
 245         entity_t *ent;
 246         int i, j;
 247         char name[32];
 248
 249         for (i = 0, ent = cl_entities;i < cl_num_entities;i++, ent++)
 250         {
 251                 if (!ent->state_current.active)
 252                         continue;
 253
 254                 if (ent->render.model)
 255                         strncpy(name, ent->render.model->name, 25);
 256                 else
 257                         strcpy(name, "--no model--");
 258                 name[25] = 0;
 259                 for (j = strlen(name);j < 25;j++)
 260                         name[j] = ' ';
 261                 Con_Printf ("%3i: %s:%04i (%5i %5i %5i) [%3i %3i %3i] %4.2f %5.3f\n", i, name, ent->render.frame, (int) ent->render.origin[0], (int) ent->render.origin[1], (int) ent->render.origin[2], (int) ent->render.angles[0] % 360, (int) ent->render.angles[1] % 360, (int) ent->render.angles[2] % 360, ent->render.scale, ent->render.alpha);
 262         }
 263 }
 264
 265 static const vec3_t nomodelmins = {-16, -16, -16};
 266 static const vec3_t nomodelmaxs = {16, 16, 16};
 267 void CL_BoundingBoxForEntity(entity_render_t *ent)
 268 {
 269         if (ent->model)
 270         {
 271                 if (ent->angles[0] || ent->angles[2])
 272                 {
 273                         // pitch or roll
 274                         VectorAdd(ent->origin, ent->model->rotatedmins, ent->mins);
 275                         VectorAdd(ent->origin, ent->model->rotatedmaxs, ent->maxs);
 276                 }
 277                 else if (ent->angles[1])
 278                 {
 279                         // yaw
 280                         VectorAdd(ent->origin, ent->model->yawmins, ent->mins);
 281                         VectorAdd(ent->origin, ent->model->yawmaxs, ent->maxs);
 282                 }
 283                 else
 284                 {
 285                         VectorAdd(ent->origin, ent->model->normalmins, ent->mins);
 286                         VectorAdd(ent->origin, ent->model->normalmaxs, ent->maxs);
 287                 }
 288         }
 289         else
 290         {
 291                 VectorAdd(ent->origin, nomodelmins, ent->mins);
 292                 VectorAdd(ent->origin, nomodelmaxs, ent->maxs);
 293         }
 294 }
 295
 296 void CL_LerpUpdate(entity_t *e)
 297 {
 298         entity_persistent_t *p;
 299         entity_render_t *r;
 300         p = &e->persistent;
 301         r = &e->render;
 302
 303         if (p->modelindex != e->state_current.modelindex)
 304         {
 305                 // reset all interpolation information
 306                 p->modelindex = e->state_current.modelindex;
 307                 p->frame1 = p->frame2 = e->state_current.frame;
 308                 p->frame1time = p->frame2time = cl.time;
 309                 p->framelerp = 1;
 310         }
 311         else if (p->frame2 != e->state_current.frame)
 312         {
 313                 // transition to new frame
 314                 p->frame1 = p->frame2;
 315                 p->frame1time = p->frame2time;
 316                 p->frame2 = e->state_current.frame;
 317                 p->frame2time = cl.time;
 318                 p->framelerp = 0;
 319         }
 320         else
 321         {
 322                 // update transition
 323                 p->framelerp = (cl.time - p->frame2time) * 10;
 324                 p->framelerp = bound(0, p->framelerp, 1);
 325         }
 326
 327         r->model = cl.model_precache[e->state_current.modelindex];
 328         Mod_CheckLoaded(r->model);
 329         r->frame = e->state_current.frame;
 330         r->frame1 = p->frame1;
 331         r->frame2 = p->frame2;
 332         r->framelerp = p->framelerp;
 333         r->frame1time = p->frame1time;
 334         r->frame2time = p->frame2time;
 335 }
 336
 337 /*
 338 ===============
 339 CL_LerpPoint
 340
 341 Determines the fraction between the last two messages that the objects
 342 should be put at.
 343 ===============
 344 */
 345 static float CL_LerpPoint (void)
 346 {
 347         float f;
 348
 349         // dropped packet, or start of demo
 350         if (cl.mtime[1] < cl.mtime[0] - 0.1)
 351                 cl.mtime[1] = cl.mtime[0] - 0.1;
 352
 353         cl.time = bound(cl.mtime[1], cl.time, cl.mtime[0]);
 354
 355         // LordHavoc: lerp in listen games as the server is being capped below the client (usually)
 356         f = cl.mtime[0] - cl.mtime[1];
 357         if (!f || cl_nolerp.integer || cls.timedemo || (sv.active && svs.maxclients == 1))
 358         {
 359                 cl.time = cl.mtime[0];
 360                 return 1;
 361         }
 362
 363         f = (cl.time - cl.mtime[1]) / f;
 364         return bound(0, f, 1);
 365 }
 366
 367 void CL_ClearTempEntities (void)
 368 {
 369         cl_num_temp_entities = 0;
 370 }
 371
 372 entity_t *CL_NewTempEntity (void)
 373 {
 374         entity_t *ent;
 375
 376         if (r_refdef.numentities >= r_refdef.maxentities)
 377                 return NULL;
 378         if (cl_num_temp_entities >= cl_max_temp_entities)
 379                 return NULL;
 380         ent = &cl_temp_entities[cl_num_temp_entities++];
 381         memset (ent, 0, sizeof(*ent));
 382         r_refdef.entities[r_refdef.numentities++] = &ent->render;
 383
 384         ent->render.colormap = -1; // no special coloring
 385         ent->render.scale = 1;
 386         ent->render.alpha = 1;
 387         return ent;
 388 }
 389
 390 void CL_AllocDlight (entity_render_t *ent, vec3_t org, float radius, float red, float green, float blue, float decay, float lifetime)
 391 {
 392         int i;
 393         dlight_t *dl;
 394
 395         /*
 396 // first look for an exact key match
 397         if (ent)
 398         {
 399                 dl = cl_dlights;
 400                 for (i = 0;i < MAX_DLIGHTS;i++, dl++)
 401                         if (dl->ent == ent)
 402                                 goto dlightsetup;
 403         }
 404         */
 405
 406 // then look for anything else
 407         dl = cl_dlights;
 408         for (i = 0;i < MAX_DLIGHTS;i++, dl++)
 409                 if (!dl->radius)
 410                         goto dlightsetup;
 411
 412         // unable to find one
 413         return;
 414
 415 dlightsetup:
 416         //Con_Printf("dlight %i : %f %f %f : %f %f %f\n", i, org[0], org[1], org[2], red * radius, green * radius, blue * radius);
 417         memset (dl, 0, sizeof(*dl));
 418         dl->ent = ent;
 419         VectorCopy(org, dl->origin);
 420         dl->radius = radius;
 421         dl->color[0] = red;
 422         dl->color[1] = green;
 423         dl->color[2] = blue;
 424         dl->decay = decay;
 425         if (lifetime)
 426                 dl->die = cl.time + lifetime;
 427         else
 428                 dl->die = 0;
 429 }
 430
 431 void CL_DecayLights (void)
 432 {
 433         int i;
 434         dlight_t *dl;
 435         float time;
 436
 437         time = cl.time - cl.oldtime;
 438
 439         dl = cl_dlights;
 440         for (i=0 ; i<MAX_DLIGHTS ; i++, dl++)
 441         {
 442                 if (!dl->radius)
 443                         continue;
 444                 if (dl->die < cl.time)
 445                 {
 446                         dl->radius = 0;
 447                         continue;
 448                 }
 449
 450                 dl->radius -= time*dl->decay;
 451                 if (dl->radius < 0)
 452                         dl->radius = 0;
 453         }
 454 }
 455
 456 void CL_RelinkWorld (void)
 457 {
 458         if (cl_num_entities < 1)
 459                 cl_num_entities = 1;
 460         cl_brushmodel_entities[cl_num_brushmodel_entities++] = &cl_entities[0].render;
 461         CL_BoundingBoxForEntity(&cl_entities[0].render);
 462 }
 463
 464 static void CL_RelinkStaticEntities(void)
 465 {
 466         int i;
 467         for (i = 0;i < cl_num_static_entities && r_refdef.numentities < r_refdef.maxentities;i++)
 468         {
 469                 Mod_CheckLoaded(cl_static_entities[i].render.model);
 470                 r_refdef.entities[r_refdef.numentities++] = &cl_static_entities[i].render;
 471         }
 472 }
 473
 474 /*
 475 ===============
 476 CL_RelinkEntities
 477 ===============
 478 */
 479 extern qboolean Nehahrademcompatibility;
 480 static void CL_RelinkNetworkEntities(void)
 481 {
 482         entity_t *ent;
 483         int i, effects, temp;
 484         float d, bobjrotate, bobjoffset, lerp;
 485         vec3_t oldorg, neworg, delta, dlightcolor, v, v2, mins, maxs;
 486
 487         bobjrotate = ANGLEMOD(100*cl.time);
 488         if (cl_itembobheight.value)
 489                 bobjoffset = (cos(cl.time * cl_itembobspeed.value * (2.0 * M_PI)) + 1.0) * 0.5 * cl_itembobheight.value;
 490         else
 491                 bobjoffset = 0;
 492
 493         // start on the entity after the world
 494         for (i = 1, ent = cl_entities + 1;i < MAX_EDICTS;i++, ent++)
 495         {
 496                 // if the object isn't active in the current network frame, skip it
 497                 if (!cl_entities_active[i])
 498                         continue;
 499                 if (!ent->state_current.active)
 500                 {
 501                         cl_entities_active[i] = false;
 502                         continue;
 503                 }
 504
 505                 VectorCopy(ent->persistent.trail_origin, oldorg);
 506
 507                 if (!ent->state_previous.active)
 508                 {
 509                         // only one state available
 510                         VectorCopy (ent->persistent.neworigin, neworg);
 511                         VectorCopy (ent->persistent.newangles, ent->render.angles);
 512                         VectorCopy (neworg, oldorg);
 513                 }
 514                 else
 515                 {
 516                         // if the delta is large, assume a teleport and don't lerp
 517                         VectorSubtract(ent->persistent.neworigin, ent->persistent.oldorigin, delta);
 518                         if (ent->persistent.lerpdeltatime > 0)
 519                         {
 520                                 lerp = (cl.time - ent->persistent.lerpstarttime) / ent->persistent.lerpdeltatime;
 521                                 if (lerp < 1)
 522                                 {
 523                                         // interpolate the origin and angles
 524                                         VectorMA(ent->persistent.oldorigin, lerp, delta, neworg);
 525                                         VectorSubtract(ent->persistent.newangles, ent->persistent.oldangles, delta);
 526                                         if (delta[0] < -180) delta[0] += 360;else if (delta[0] >= 180) delta[0] -= 360;
 527                                         if (delta[1] < -180) delta[1] += 360;else if (delta[1] >= 180) delta[1] -= 360;
 528                                         if (delta[2] < -180) delta[2] += 360;else if (delta[2] >= 180) delta[2] -= 360;
 529                                         VectorMA(ent->persistent.oldangles, lerp, delta, ent->render.angles);
 530                                 }
 531                                 else
 532                                 {
 533                                         // no interpolation
 534                                         VectorCopy (ent->persistent.neworigin, neworg);
 535                                         VectorCopy (ent->persistent.newangles, ent->render.angles);
 536                                 }
 537                         }
 538                         else
 539                         {
 540                                 // no interpolation
 541                                 VectorCopy (ent->persistent.neworigin, neworg);
 542                                 VectorCopy (ent->persistent.newangles, ent->render.angles);
 543                         }
 544                 }
 545
 546                 VectorCopy (neworg, ent->persistent.trail_origin);
 547                 // persistent.modelindex will be updated by CL_LerpUpdate
 548                 if (ent->state_current.modelindex != ent->persistent.modelindex || !ent->state_previous.active)
 549                         VectorCopy(neworg, oldorg);
 550
 551                 VectorCopy (neworg, ent->render.origin);
 552                 ent->render.flags = ent->state_current.flags;
 553                 if (i == cl.viewentity)
 554                         ent->render.flags |= RENDER_EXTERIORMODEL;
 555                 ent->render.effects = effects = ent->state_current.effects;
 556                 if (ent->state_current.flags & RENDER_COLORMAPPED)
 557                         ent->render.colormap = ent->state_current.colormap;
 558                 else if (cl.scores == NULL || !ent->state_current.colormap)
 559                         ent->render.colormap = -1; // no special coloring
 560                 else
 561                         ent->render.colormap = cl.scores[ent->state_current.colormap - 1].colors; // color it
 562                 ent->render.skinnum = ent->state_current.skin;
 563                 ent->render.alpha = ent->state_current.alpha * (1.0f / 255.0f); // FIXME: interpolate?
 564                 ent->render.scale = ent->state_current.scale * (1.0f / 16.0f); // FIXME: interpolate?
 565
 566                 // update interpolation info
 567                 CL_LerpUpdate(ent);
 568
 569                 // handle effects now...
 570                 dlightcolor[0] = 0;
 571                 dlightcolor[1] = 0;
 572                 dlightcolor[2] = 0;
 573
 574                 // LordHavoc: if the entity has no effects, don't check each
 575                 if (effects)
 576                 {
 577                         if (effects & EF_BRIGHTFIELD)
 578                         {
 579                                 if (gamemode == GAME_NEXIUZ)
 580                                 {
 581                                         dlightcolor[0] += 100.0f;
 582                                         dlightcolor[1] += 200.0f;
 583                                         dlightcolor[2] += 400.0f;
 584                                         // don't do trail if we have no previous location
 585                                         if (ent->state_previous.active)
 586                                                 CL_RocketTrail (oldorg, neworg, 8, ent);
 587                                 }
 588                                 else
 589                                         CL_EntityParticles (ent);
 590                         }
 591                         if (effects & EF_MUZZLEFLASH)
 592                                 ent->persistent.muzzleflash = 100.0f;
 593                         if (effects & EF_DIMLIGHT)
 594                         {
 595                                 dlightcolor[0] += 200.0f;
 596                                 dlightcolor[1] += 200.0f;
 597                                 dlightcolor[2] += 200.0f;
 598                         }
 599                         if (effects & EF_BRIGHTLIGHT)
 600                         {
 601                                 dlightcolor[0] += 400.0f;
 602                                 dlightcolor[1] += 400.0f;
 603                                 dlightcolor[2] += 400.0f;
 604                         }
 605                         // LordHavoc: added EF_RED and EF_BLUE
 606                         if (effects & EF_RED) // red
 607                         {
 608                                 dlightcolor[0] += 200.0f;
 609                                 dlightcolor[1] +=  20.0f;
 610                                 dlightcolor[2] +=  20.0f;
 611                         }
 612                         if (effects & EF_BLUE) // blue
 613                         {
 614                                 dlightcolor[0] +=  20.0f;
 615                                 dlightcolor[1] +=  20.0f;
 616                                 dlightcolor[2] += 200.0f;
 617                         }
 618                         if (effects & EF_FLAME)
 619                         {
 620                                 if (ent->render.model)
 621                                 {
 622                                         mins[0] = neworg[0] - 16.0f;
 623                                         mins[1] = neworg[1] - 16.0f;
 624                                         mins[2] = neworg[2] - 16.0f;
 625                                         maxs[0] = neworg[0] + 16.0f;
 626                                         maxs[1] = neworg[1] + 16.0f;
 627                                         maxs[2] = neworg[2] + 16.0f;
 628                                         // how many flames to make
 629                                         temp = (int) (cl.time * 300) - (int) (cl.oldtime * 300);
 630                                         CL_FlameCube(mins, maxs, temp);
 631                                 }
 632                                 d = lhrandom(200, 250);
 633                                 dlightcolor[0] += d * 1.0f;
 634                                 dlightcolor[1] += d * 0.7f;
 635                                 dlightcolor[2] += d * 0.3f;
 636                         }
 637                         if (effects & EF_STARDUST)
 638                         {
 639                                 if (ent->render.model)
 640                                 {
 641                                         mins[0] = neworg[0] - 16.0f;
 642                                         mins[1] = neworg[1] - 16.0f;
 643                                         mins[2] = neworg[2] - 16.0f;
 644                                         maxs[0] = neworg[0] + 16.0f;
 645                                         maxs[1] = neworg[1] + 16.0f;
 646                                         maxs[2] = neworg[2] + 16.0f;
 647                                         // how many particles to make
 648                                         temp = (int) (cl.time * 200) - (int) (cl.oldtime * 200);
 649                                         CL_Stardust(mins, maxs, temp);
 650                                 }
 651                                 d = 100;
 652                                 dlightcolor[0] += d * 1.0f;
 653                                 dlightcolor[1] += d * 0.7f;
 654                                 dlightcolor[2] += d * 0.3f;
 655                         }
 656                 }
 657
 658                 if (ent->persistent.muzzleflash > 0)
 659                 {
 660                         AngleVectors (ent->render.angles, v, NULL, NULL);
 661
 662                         v2[0] = v[0] * 18 + neworg[0];
 663                         v2[1] = v[1] * 18 + neworg[1];
 664                         v2[2] = v[2] * 18 + neworg[2] + 16;
 665                         CL_TraceLine(neworg, v2, v, NULL, 0, true, NULL);
 666
 667                         CL_AllocDlight (NULL, v, ent->persistent.muzzleflash, 1, 1, 1, 0, 0);
 668                         ent->persistent.muzzleflash -= cl.frametime * 1000;
 669                 }
 670
 671                 // LordHavoc: if the model has no flags, don't check each
 672                 if (ent->render.model && ent->render.model->flags)
 673                 {
 674                         if (ent->render.model->flags & EF_ROTATE)
 675                         {
 676                                 ent->render.angles[1] = bobjrotate;
 677                                 ent->render.origin[2] += bobjoffset;
 678                         }
 679                         // only do trails if present in the previous frame as well
 680                         if (ent->state_previous.active)
 681                         {
 682                                 if (ent->render.model->flags & EF_GIB)
 683                                         CL_RocketTrail (oldorg, neworg, 2, ent);
 684                                 else if (ent->render.model->flags & EF_ZOMGIB)
 685                                         CL_RocketTrail (oldorg, neworg, 4, ent);
 686                                 else if (ent->render.model->flags & EF_TRACER)
 687                                 {
 688                                         CL_RocketTrail (oldorg, neworg, 3, ent);
 689                                         dlightcolor[0] += 0x10;
 690                                         dlightcolor[1] += 0x40;
 691                                         dlightcolor[2] += 0x10;
 692                                 }
 693                                 else if (ent->render.model->flags & EF_TRACER2)
 694                                 {
 695                                         CL_RocketTrail (oldorg, neworg, 5, ent);
 696                                         dlightcolor[0] += 0x50;
 697                                         dlightcolor[1] += 0x30;
 698                                         dlightcolor[2] += 0x10;
 699                                 }
 700                                 else if (ent->render.model->flags & EF_ROCKET)
 701                                 {
 702                                         CL_RocketTrail (oldorg, ent->render.origin, 0, ent);
 703                                         dlightcolor[0] += 200.0f;
 704                                         dlightcolor[1] += 160.0f;
 705                                         dlightcolor[2] +=  80.0f;
 706                                 }
 707                                 else if (ent->render.model->flags & EF_GRENADE)
 708                                 {
 709                                         if (ent->render.alpha == -1) // LordHavoc: Nehahra dem compatibility (cigar smoke)
 710                                                 CL_RocketTrail (oldorg, neworg, 7, ent);
 711                                         else
 712                                                 CL_RocketTrail (oldorg, neworg, 1, ent);
 713                                 }
 714                                 else if (ent->render.model->flags & EF_TRACER3)
 715                                 {
 716                                         CL_RocketTrail (oldorg, neworg, 6, ent);
 717                                         dlightcolor[0] += 0x50;
 718                                         dlightcolor[1] += 0x20;
 719                                         dlightcolor[2] += 0x40;
 720                                 }
 721                         }
 722                 }
 723                 // LordHavoc: customizable glow
 724                 if (ent->state_current.glowsize)
 725                 {
 726                         // * 4 for the expansion from 0-255 to 0-1023 range,
 727                         // / 255 to scale down byte colors
 728                         VectorMA(dlightcolor, ent->state_current.glowsize * (4.0f / 255.0f), (qbyte *)&palette_complete[ent->state_current.glowcolor], dlightcolor);
 729                 }
 730                 // LordHavoc: customizable trail
 731                 if (ent->render.flags & RENDER_GLOWTRAIL)
 732                         CL_RocketTrail2 (oldorg, neworg, ent->state_current.glowcolor, ent);
 733
 734                 if (dlightcolor[0] || dlightcolor[1] || dlightcolor[2])
 735                 {
 736                         VectorCopy(neworg, v);
 737                         // hack to make glowing player light shine on their gun
 738                         if (i == cl.viewentity/* && !chase_active.integer*/)
 739                                 v[2] += 30;
 740                         CL_AllocDlight (&ent->render, v, 1, dlightcolor[0], dlightcolor[1], dlightcolor[2], 0, 0);
 741                 }
 742
 743                 if (chase_active.integer && (ent->render.flags & RENDER_VIEWMODEL))
 744                         continue;
 745
 746                 // don't show entities with no modelindex (note: this still shows
 747                 // entities which have a modelindex that resolved to a NULL model)
 748                 if (!ent->state_current.modelindex)
 749                         continue;
 750                 if (effects & EF_NODRAW)
 751                         continue;
 752
 753                 CL_BoundingBoxForEntity(&ent->render);
 754                 if (ent->render.model && ent->render.model->name[0] == '*' && ent->render.model->type == mod_brush)
 755                         cl_brushmodel_entities[cl_num_brushmodel_entities++] = &ent->render;
 756
 757                 // note: the cl.viewentity and intermission check is to hide player
 758                 // shadow during intermission and during the Nehahra movie and
 759                 // Nehahra cinematics
 760                 if (!(ent->state_current.effects & EF_NOSHADOW)
 761                  && !(ent->state_current.effects & EF_ADDITIVE)
 762                  && (ent->state_current.alpha == 255)
 763                  && !(ent->render.flags & RENDER_VIEWMODEL)
 764                  && (i != cl.viewentity || (!cl.intermission && !Nehahrademcompatibility)))
 765                         ent->render.flags |= RENDER_SHADOW;
 766
 767                 if (r_refdef.numentities < r_refdef.maxentities)
 768                         r_refdef.entities[r_refdef.numentities++] = &ent->render;
 769
 770                 if (cl_num_entities < i + 1)
 771                         cl_num_entities = i + 1;
 772         }
 773 }
 774
 775 void CL_Effect(vec3_t org, int modelindex, int startframe, int framecount, float framerate)
 776 {
 777         int i;
 778         cl_effect_t *e;
 779         if (!modelindex) // sanity check
 780                 return;
 781         for (i = 0, e = cl_effects;i < cl_max_effects;i++, e++)
 782         {
 783                 if (e->active)
 784                         continue;
 785                 e->active = true;
 786                 VectorCopy(org, e->origin);
 787                 e->modelindex = modelindex;
 788                 e->starttime = cl.time;
 789                 e->startframe = startframe;
 790                 e->endframe = startframe + framecount;
 791                 e->framerate = framerate;
 792
 793                 e->frame = 0;
 794                 e->frame1time = cl.time;
 795                 e->frame2time = cl.time;
 796                 break;
 797         }
 798 }
 799
 800 static void CL_RelinkEffects(void)
 801 {
 802         int i, intframe;
 803         cl_effect_t *e;
 804         entity_t *ent;
 805         float frame;
 806
 807         for (i = 0, e = cl_effects;i < cl_max_effects;i++, e++)
 808         {
 809                 if (e->active)
 810                 {
 811                         frame = (cl.time - e->starttime) * e->framerate + e->startframe;
 812                         intframe = frame;
 813                         if (intframe < 0 || intframe >= e->endframe)
 814                         {
 815                                 e->active = false;
 816                                 memset(e, 0, sizeof(*e));
 817                                 continue;
 818                         }
 819
 820                         if (intframe != e->frame)
 821                         {
 822                                 e->frame = intframe;
 823                                 e->frame1time = e->frame2time;
 824                                 e->frame2time = cl.time;
 825                         }
 826
 827                         // if we're drawing effects, get a new temp entity
 828                         // (NewTempEntity adds it to the render entities list for us)
 829                         if (r_draweffects.integer && (ent = CL_NewTempEntity()))
 830                         {
 831                                 // interpolation stuff
 832                                 ent->render.frame1 = intframe;
 833                                 ent->render.frame2 = intframe + 1;
 834                                 if (ent->render.frame2 >= e->endframe)
 835                                         ent->render.frame2 = -1; // disappear
 836                                 ent->render.framelerp = frame - intframe;
 837                                 ent->render.frame1time = e->frame1time;
 838                                 ent->render.frame2time = e->frame2time;
 839
 840                                 // normal stuff
 841                                 VectorCopy(e->origin, ent->render.origin);
 842                                 ent->render.model = cl.model_precache[e->modelindex];
 843                                 ent->render.frame = ent->render.frame2;
 844                                 ent->render.colormap = -1; // no special coloring
 845                                 ent->render.scale = 1;
 846                                 ent->render.alpha = 1;
 847
 848                                 CL_BoundingBoxForEntity(&ent->render);
 849                         }
 850                 }
 851         }
 852 }
 853
 854 void CL_RelinkBeams (void)
 855 {
 856         int i;
 857         beam_t *b;
 858         vec3_t dist, org;
 859         float d;
 860         entity_t *ent;
 861         float yaw, pitch;
 862         float forward;
 863
 864         for (i = 0, b = cl_beams;i < cl_max_beams;i++, b++)
 865         {
 866                 if (!b->model || b->endtime < cl.time)
 867                         continue;
 868
 869                 // if coming from the player, update the start position
 870                 //if (b->entity == cl.viewentity)
 871                 //      VectorCopy (cl_entities[cl.viewentity].render.origin, b->start);
 872                 if (cl_beams_relative.integer && b->entity && cl_entities[b->entity].state_current.active && b->relativestartvalid)
 873                 {
 874                         entity_state_t *p = &cl_entities[b->entity].state_previous;
 875                         //entity_state_t *c = &cl_entities[b->entity].state_current;
 876                         entity_render_t *r = &cl_entities[b->entity].render;
 877                         matrix4x4_t matrix, imatrix;
 878                         if (b->relativestartvalid == 2)
 879                         {
 880                                 // not really valid yet, we need to get the orientation now
 881                                 // (ParseBeam flagged this because it is received before
 882                                 //  entities are received, by now they have been received)
 883                                 // note: because players create lightning in their think
 884                                 // function (which occurs before movement), they actually
 885                                 // have some lag in it's location, so compare to the
 886                                 // previous player state, not the latest
 887                                 if (b->entity == cl.viewentity)
 888                                         Matrix4x4_CreateFromQuakeEntity(&matrix, cl.viewentoriginold[0], cl.viewentoriginold[1], cl.viewentoriginold[2] + 16, cl.viewangles[0], cl.viewangles[1], cl.viewangles[2], 1);
 889                                 else
 890                                         Matrix4x4_CreateFromQuakeEntity(&matrix, p->origin[0], p->origin[1], p->origin[2] + 16, p->angles[0], p->angles[1], p->angles[2], 1);
 891                                 Matrix4x4_Invert_Simple(&imatrix, &matrix);
 892                                 Matrix4x4_Transform(&imatrix, b->start, b->relativestart);
 893                                 Matrix4x4_Transform(&imatrix, b->end, b->relativeend);
 894                                 b->relativestartvalid = 1;
 895                         }
 896                         else
 897                         {
 898                                 if (b->entity == cl.viewentity)
 899                                         Matrix4x4_CreateFromQuakeEntity(&matrix, cl.viewentorigin[0], cl.viewentorigin[1], cl.viewentorigin[2] + 16, cl.viewangles[0], cl.viewangles[1], cl.viewangles[2], 1);
 900                                 else
 901                                         Matrix4x4_CreateFromQuakeEntity(&matrix, r->origin[0], r->origin[1], r->origin[2] + 16, r->angles[0], r->angles[1], r->angles[2], 1);
 902                                 Matrix4x4_Transform(&matrix, b->relativestart, b->start);
 903                                 Matrix4x4_Transform(&matrix, b->relativeend, b->end);
 904                         }
 905                 }
 906
 907                 if (b->lightning && cl_beams_polygons.integer)
 908                         continue;
 909
 910                 // calculate pitch and yaw
 911                 VectorSubtract (b->end, b->start, dist);
 912
 913                 if (dist[1] == 0 && dist[0] == 0)
 914                 {
 915                         yaw = 0;
 916                         if (dist[2] > 0)
 917                                 pitch = 90;
 918                         else
 919                                 pitch = 270;
 920                 }
 921                 else
 922                 {
 923                         yaw = (int) (atan2(dist[1], dist[0]) * 180 / M_PI);
 924                         if (yaw < 0)
 925                                 yaw += 360;
 926
 927                         forward = sqrt (dist[0]*dist[0] + dist[1]*dist[1]);
 928                         pitch = (int) (atan2(dist[2], forward) * 180 / M_PI);
 929                         if (pitch < 0)
 930                                 pitch += 360;
 931                 }
 932
 933                 // add new entities for the lightning
 934                 VectorCopy (b->start, org);
 935                 d = VectorNormalizeLength(dist);
 936                 while (d > 0)
 937                 {
 938                         ent = CL_NewTempEntity ();
 939                         if (!ent)
 940                                 return;
 941                         VectorCopy (org, ent->render.origin);
 942                         ent->render.model = b->model;
 943                         ent->render.effects = EF_FULLBRIGHT;
 944                         ent->render.angles[0] = pitch;
 945                         ent->render.angles[1] = yaw;
 946                         ent->render.angles[2] = rand()%360;
 947                         CL_BoundingBoxForEntity(&ent->render);
 948                         VectorMA(org, 30, dist, org);
 949                         d -= 30;
 950                 }
 951         }
 952 }
 953
 954 cvar_t r_lightningbeam_thickness = {CVAR_SAVE, "r_lightningbeam_thickness", "4"};
 955 cvar_t r_lightningbeam_scroll = {CVAR_SAVE, "r_lightningbeam_scroll", "5"};
 956 cvar_t r_lightningbeam_repeatdistance = {CVAR_SAVE, "r_lightningbeam_repeatdistance", "1024"};
 957 cvar_t r_lightningbeam_color_red = {CVAR_SAVE, "r_lightningbeam_color_red", "1"};
 958 cvar_t r_lightningbeam_color_green = {CVAR_SAVE, "r_lightningbeam_color_green", "1"};
 959 cvar_t r_lightningbeam_color_blue = {CVAR_SAVE, "r_lightningbeam_color_blue", "1"};
 960
 961 rtexture_t *r_lightningbeamtexture;
 962 rtexturepool_t *r_lightningbeamtexturepool;
 963
 964 int r_lightningbeamelements[18] = {0, 1, 2, 0, 2, 3, 4, 5, 6, 4, 6, 7, 8, 9, 10, 8, 10, 11};
 965
 966 void r_lightningbeams_start(void)
 967 {
 968         float r, g, b, intensity, fx, width, center;
 969         int x, y;
 970         qbyte *data, *noise1, *noise2;
 971         data = Mem_Alloc(tempmempool, 32 * 512 * 4);
 972         noise1 = Mem_Alloc(tempmempool, 512 * 512);
 973         noise2 = Mem_Alloc(tempmempool, 512 * 512);
 974         fractalnoise(noise1, 512, 8);
 975         fractalnoise(noise2, 512, 16);
 976
 977         for (y = 0;y < 512;y++)
 978         {
 979                 width = noise1[y * 512] * (1.0f / 256.0f) * 3.0f + 3.0f;
 980                 center = (noise1[y * 512 + 64] / 256.0f) * (32.0f - (width + 1.0f) * 2.0f) + (width + 1.0f);
 981                 for (x = 0;x < 32;x++, fx++)
 982                 {
 983                         fx = (x - center) / width;
 984                         intensity = (1.0f - fx * fx) * (noise2[y*512+x] * (1.0f / 256.0f) * 0.33f + 0.66f);
 985                         intensity = bound(0, intensity, 1);
 986                         r = intensity * 2.0f - 1.0f;
 987                         g = intensity * 3.0f - 1.0f;
 988                         b = intensity * 3.0f;
 989                         data[(y * 32 + x) * 4 + 0] = (qbyte)(bound(0, r, 1) * 255.0f);
 990                         data[(y * 32 + x) * 4 + 1] = (qbyte)(bound(0, g, 1) * 255.0f);
 991                         data[(y * 32 + x) * 4 + 2] = (qbyte)(bound(0, b, 1) * 255.0f);
 992                         data[(y * 32 + x) * 4 + 3] = (qbyte)255;
 993                 }
 994         }
 995
 996         r_lightningbeamtexturepool = R_AllocTexturePool();
 997         r_lightningbeamtexture = R_LoadTexture2D(r_lightningbeamtexturepool, "lightningbeam", 32, 512, data, TEXTYPE_RGBA, TEXF_PRECACHE, NULL);
 998         Mem_Free(noise1);
 999         Mem_Free(noise2);
1000         Mem_Free(data);
1001 }
1002
1003 void r_lightningbeams_shutdown(void)
1004 {
1005         r_lightningbeamtexture = NULL;
1006         R_FreeTexturePool(&r_lightningbeamtexturepool);
1007 }
1008
1009 void r_lightningbeams_newmap(void)
1010 {
1011 }
1012
1013 void R_LightningBeams_Init(void)
1014 {
1015         Cvar_RegisterVariable(&r_lightningbeam_thickness);
1016         Cvar_RegisterVariable(&r_lightningbeam_scroll);
1017         Cvar_RegisterVariable(&r_lightningbeam_repeatdistance);
1018         Cvar_RegisterVariable(&r_lightningbeam_color_red);
1019         Cvar_RegisterVariable(&r_lightningbeam_color_green);
1020         Cvar_RegisterVariable(&r_lightningbeam_color_blue);
1021         R_RegisterModule("R_LightningBeams", r_lightningbeams_start, r_lightningbeams_shutdown, r_lightningbeams_newmap);
1022 }
1023
1024 void R_CalcLightningBeamPolygonVertices(float *v, float *tc, const float *start, const float *end, const float *offset, float t1, float t2)
1025 {
1026         // near right corner
1027         VectorAdd     (start, offset, (v +  0));tc[ 0] = 0;tc[ 1] = t1;
1028         // near left corner
1029         VectorSubtract(start, offset, (v +  4));tc[ 4] = 1;tc[ 5] = t1;
1030         // far left corner
1031         VectorSubtract(end  , offset, (v +  8));tc[ 8] = 1;tc[ 9] = t2;
1032         // far right corner
1033         VectorAdd     (end  , offset, (v + 12));tc[12] = 0;tc[13] = t2;
1034 }
1035
1036 void R_FogLightningBeamColors(const float *v, float *c, int numverts, float r, float g, float b, float a)
1037 {
1038         int i;
1039         vec3_t fogvec;
1040         float ifog;
1041         for (i = 0;i < numverts;i++, v += 4, c += 4)
1042         {
1043                 VectorSubtract(v, r_origin, fogvec);
1044                 ifog = 1 - exp(fogdensity/DotProduct(fogvec,fogvec));
1045                 c[0] = r * ifog;
1046                 c[1] = g * ifog;
1047                 c[2] = b * ifog;
1048                 c[3] = a;
1049         }
1050 }
1051
1052 float beamrepeatscale;
1053
1054 void R_DrawLightningBeamCallback(const void *calldata1, int calldata2)
1055 {
1056         const beam_t *b = calldata1;
1057         rmeshstate_t m;
1058         vec3_t beamdir, right, up, offset;
1059         float length, t1, t2;
1060         memset(&m, 0, sizeof(m));
1061         m.blendfunc1 = GL_SRC_ALPHA;
1062         m.blendfunc2 = GL_ONE;
1063         m.tex[0] = R_GetTexture(r_lightningbeamtexture);
1064         R_Mesh_State(&m);
1065         R_Mesh_Matrix(&r_identitymatrix);
1066
1067         // calculate beam direction (beamdir) vector and beam length
1068         // get difference vector
1069         VectorSubtract(b->end, b->start, beamdir);
1070         // find length of difference vector
1071         length = sqrt(DotProduct(beamdir, beamdir));
1072         // calculate scale to make beamdir a unit vector (normalized)
1073         t1 = 1.0f / length;
1074         // scale beamdir so it is now normalized
1075         VectorScale(beamdir, t1, beamdir);
1076
1077         // calculate up vector such that it points toward viewer, and rotates around the beamdir
1078         // get direction from start of beam to viewer
1079         VectorSubtract(r_origin, b->start, up);
1080         // remove the portion of the vector that moves along the beam
1081         // (this leaves only a vector pointing directly away from the beam)
1082         t1 = -DotProduct(up, beamdir);
1083         VectorMA(up, t1, beamdir, up);
1084         // now we have a vector pointing away from the beam, now we need to normalize it
1085         VectorNormalizeFast(up);
1086         // generate right vector from forward and up, the result is already normalized
1087         // (CrossProduct returns a vector of multiplied length of the two inputs)
1088         CrossProduct(beamdir, up, right);
1089
1090         // calculate T coordinate scrolling (start and end texcoord along the beam)
1091         t1 = cl.time * -r_lightningbeam_scroll.value + beamrepeatscale * DotProduct(b->start, beamdir);
1092         t1 = t1 - (int) t1;
1093         t2 = t1 + beamrepeatscale * length;
1094
1095         // the beam is 3 polygons in this configuration:
1096         //  *   2
1097         //   * *
1098         // 1******
1099         //   * *
1100         //  *   3
1101         // they are showing different portions of the beam texture, creating an
1102         // illusion of a beam that appears to curl around in 3D space
1103         // (and realize that the whole polygon assembly orients itself to face
1104         //  the viewer)
1105
1106         // polygon 1, verts 0-3
1107         VectorScale(right, r_lightningbeam_thickness.value, offset);
1108         R_CalcLightningBeamPolygonVertices(varray_vertex, varray_texcoord[0], b->start, b->end, offset, t1, t2);
1109
1110         // polygon 2, verts 4-7
1111         VectorAdd(right, up, offset);
1112         VectorScale(offset, r_lightningbeam_thickness.value * 0.70710681f, offset);
1113         R_CalcLightningBeamPolygonVertices(varray_vertex + 16, varray_texcoord[0] + 16, b->start, b->end, offset, t1 + 0.33, t2 + 0.33);
1114
1115         // polygon 3, verts 8-11
1116         VectorSubtract(right, up, offset);
1117         VectorScale(offset, r_lightningbeam_thickness.value * 0.70710681f, offset);
1118         R_CalcLightningBeamPolygonVertices(varray_vertex + 32, varray_texcoord[0] + 32, b->start, b->end, offset, t1 + 0.66, t2 + 0.66);
1119
1120         if (fogenabled)
1121         {
1122                 // per vertex colors if fog is used
1123                 GL_UseColorArray();
1124                 R_FogLightningBeamColors(varray_vertex, varray_color, 12, r_lightningbeam_color_red.value, r_lightningbeam_color_green.value, r_lightningbeam_color_blue.value, 1);
1125         }
1126         else
1127         {
1128                 // solid color if fog is not used
1129                 GL_Color(r_lightningbeam_color_red.value, r_lightningbeam_color_green.value, r_lightningbeam_color_blue.value, 1);
1130         }
1131
1132         // draw the 3 polygons as one batch of 6 triangles using the 12 vertices
1133         R_Mesh_Draw(12, 6, r_lightningbeamelements);
1134 }
1135
1136 void R_DrawLightningBeams (void)
1137 {
1138         int i;
1139         beam_t *b;
1140         vec3_t org;
1141
1142         if (!cl_beams_polygons.integer)
1143                 return;
1144
1145         beamrepeatscale = 1.0f / r_lightningbeam_repeatdistance.value;
1146         for (i = 0, b = cl_beams;i < cl_max_beams;i++, b++)
1147         {
1148                 if (b->model && b->endtime >= cl.time && b->lightning)
1149                 {
1150                         VectorAdd(b->start, b->end, org);
1151                         VectorScale(org, 0.5f, org);
1152                         R_MeshQueue_AddTransparent(org, R_DrawLightningBeamCallback, b, 0);
1153                 }
1154         }
1155 }
1156
1157
1158 void CL_LerpPlayer(float frac)
1159 {
1160         int i;
1161         float d;
1162
1163         if (cl.entitydatabase.numframes && cl.viewentity == cl.playerentity)
1164         {
1165                 cl.viewentorigin[0] = cl.viewentoriginold[0] + frac * (cl.viewentoriginnew[0] - cl.viewentoriginold[0]);
1166                 cl.viewentorigin[1] = cl.viewentoriginold[1] + frac * (cl.viewentoriginnew[1] - cl.viewentoriginold[1]);
1167                 cl.viewentorigin[2] = cl.viewentoriginold[2] + frac * (cl.viewentoriginnew[2] - cl.viewentoriginold[2]);
1168         }
1169         else
1170         {
1171                 VectorCopy (cl_entities[cl.viewentity].state_previous.origin, cl.viewentoriginold);
1172                 VectorCopy (cl_entities[cl.viewentity].state_current.origin, cl.viewentoriginnew);
1173                 VectorCopy (cl_entities[cl.viewentity].render.origin, cl.viewentorigin);
1174         }
1175
1176         cl.viewzoom = cl.viewzoomold + frac * (cl.viewzoomnew - cl.viewzoomold);
1177
1178         for (i = 0;i < 3;i++)
1179                 cl.velocity[i] = cl.mvelocity[1][i] + frac * (cl.mvelocity[0][i] - cl.mvelocity[1][i]);
1180
1181         if (cls.demoplayback)
1182         {
1183                 // interpolate the angles
1184                 for (i = 0;i < 3;i++)
1185                 {
1186                         d = cl.mviewangles[0][i] - cl.mviewangles[1][i];
1187                         if (d > 180)
1188                                 d -= 360;
1189                         else if (d < -180)
1190                                 d += 360;
1191                         cl.viewangles[i] = cl.mviewangles[1][i] + frac * d;
1192                 }
1193         }
1194 }
1195
1196 void CL_RelinkEntities (void)
1197 {
1198         float frac;
1199
1200         // fraction from previous network update to current
1201         frac = CL_LerpPoint();
1202
1203         CL_ClearTempEntities();
1204         CL_DecayLights();
1205         CL_RelinkWorld();
1206         CL_RelinkStaticEntities();
1207         CL_RelinkNetworkEntities();
1208         CL_RelinkEffects();
1209         CL_MoveParticles();
1210
1211         CL_LerpPlayer(frac);
1212
1213         CL_RelinkBeams();
1214 }
1215
1216
1217 /*
1218 ===============
1219 CL_ReadFromServer
1220
1221 Read all incoming data from the server
1222 ===============
1223 */
1224 int CL_ReadFromServer (void)
1225 {
1226         int ret, netshown;
1227
1228         cl.oldtime = cl.time;
1229         cl.time += cl.frametime;
1230
1231         netshown = false;
1232         do
1233         {
1234                 ret = CL_GetMessage ();
1235                 if (ret == -1)
1236                         Host_Error ("CL_ReadFromServer: lost server connection");
1237                 if (!ret)
1238                         break;
1239
1240                 cl.last_received_message = realtime;
1241
1242                 if (cl_shownet.integer)
1243                         netshown = true;
1244
1245                 CL_ParseServerMessage ();
1246         }
1247         while (ret && cls.state == ca_connected);
1248
1249         if (netshown)
1250                 Con_Printf ("\n");
1251
1252         r_refdef.numentities = 0;
1253         cl_num_entities = 0;
1254         cl_num_brushmodel_entities = 0;
1255
1256         if (cls.state == ca_connected && cls.signon == SIGNONS)
1257         {
1258                 CL_RelinkEntities ();
1259
1260                 // run cgame code (which can add more entities)
1261                 CL_CGVM_Frame();
1262         }
1263
1264 //
1265 // bring the links up to date
1266 //
1267         return 0;
1268 }
1269
1270 /*
1271 =================
1272 CL_SendCmd
1273 =================
1274 */
1275 void CL_SendCmd (void)
1276 {
1277         usercmd_t               cmd;
1278
1279         if (cls.state != ca_connected)
1280                 return;
1281
1282         if (cls.signon == SIGNONS)
1283         {
1284         // get basic movement from keyboard
1285                 CL_BaseMove (&cmd);
1286
1287                 IN_PreMove(); // OS independent code
1288
1289         // allow mice or other external controllers to add to the move
1290                 IN_Move (&cmd);
1291
1292                 IN_PostMove(); // OS independent code
1293
1294         // send the unreliable message
1295                 CL_SendMove (&cmd);
1296         }
1297 #ifndef NOROUTINGFIX
1298         else if (cls.signon == 0 && !cls.demoplayback)
1299         {
1300                 // LordHavoc: fix for NAT routing of netquake:
1301                 // bounce back a clc_nop message to the newly allocated server port,
1302                 // to establish a routing connection for incoming frames,
1303                 // the server waits for this before sending anything
1304                 if (realtime > cl.sendnoptime)
1305                 {
1306                         cl.sendnoptime = realtime + 3;
1307                         Con_DPrintf("sending clc_nop to get server's attention\n");
1308                         {
1309                                 sizebuf_t buf;
1310                                 qbyte data[128];
1311                                 buf.maxsize = 128;
1312                                 buf.cursize = 0;
1313                                 buf.data = data;
1314                                 MSG_WriteByte(&buf, clc_nop);
1315                                 if (NET_SendUnreliableMessage (cls.netcon, &buf) == -1)
1316                                 {
1317                                         Con_Printf ("CL_SendCmd: lost server connection\n");
1318                                         CL_Disconnect ();
1319                                 }
1320                         }
1321                 }
1322         }
1323 #endif
1324
1325         if (cls.demoplayback)
1326         {
1327                 SZ_Clear (&cls.message);
1328                 return;
1329         }
1330
1331 // send the reliable message
1332         if (!cls.message.cursize)
1333                 return;         // no message at all
1334
1335         if (!NET_CanSendMessage (cls.netcon))
1336         {
1337                 Con_DPrintf ("CL_WriteToServer: can't send\n");
1338                 if (developer.integer)
1339                         SZ_HexDumpToConsole(&cls.message);
1340                 return;
1341         }
1342
1343         if (NET_SendMessage (cls.netcon, &cls.message) == -1)
1344                 Host_Error ("CL_WriteToServer: lost server connection");
1345
1346         SZ_Clear (&cls.message);
1347 }
1348
1349 // LordHavoc: pausedemo command
1350 static void CL_PauseDemo_f (void)
1351 {
1352         cls.demopaused = !cls.demopaused;
1353         if (cls.demopaused)
1354                 Con_Printf("Demo paused\n");
1355         else
1356                 Con_Printf("Demo unpaused\n");
1357 }
1358
1359 /*
1360 ======================
1361 CL_PModel_f
1362 LordHavoc: Intended for Nehahra, I personally think this is dumb, but Mindcrime won't listen.
1363 ======================
1364 */
1365 static void CL_PModel_f (void)
1366 {
1367         int i;
1368         eval_t *val;
1369
1370         if (Cmd_Argc () == 1)
1371         {
1372                 Con_Printf ("\"pmodel\" is \"%s\"\n", cl_pmodel.string);
1373                 return;
1374         }
1375         i = atoi(Cmd_Argv(1));
1376
1377         if (cmd_source == src_command)
1378         {
1379                 if (cl_pmodel.integer == i)
1380                         return;
1381                 Cvar_SetValue ("_cl_pmodel", i);
1382                 if (cls.state == ca_connected)
1383                         Cmd_ForwardToServer ();
1384                 return;
1385         }
1386
1387         host_client->pmodel = i;
1388         if ((val = GETEDICTFIELDVALUE(host_client->edict, eval_pmodel)))
1389                 val->_float = i;
1390 }
1391
1392 /*
1393 ======================
1394 CL_Fog_f
1395 ======================
1396 */
1397 static void CL_Fog_f (void)
1398 {
1399         if (Cmd_Argc () == 1)
1400         {
1401                 Con_Printf ("\"fog\" is \"%f %f %f %f\"\n", fog_density, fog_red, fog_green, fog_blue);
1402                 return;
1403         }
1404         fog_density = atof(Cmd_Argv(1));
1405         fog_red = atof(Cmd_Argv(2));
1406         fog_green = atof(Cmd_Argv(3));
1407         fog_blue = atof(Cmd_Argv(4));
1408 }
1409
1410 /*
1411 =================
1412 CL_Init
1413 =================
1414 */
1415 void CL_Init (void)
1416 {
1417         cl_scores_mempool = Mem_AllocPool("client player info");
1418         cl_entities_mempool = Mem_AllocPool("client entities");
1419         cl_refdef_mempool = Mem_AllocPool("refdef");
1420
1421         memset(&r_refdef, 0, sizeof(r_refdef));
1422         // max entities sent to renderer per frame
1423         r_refdef.maxentities = MAX_EDICTS + 256 + 512;
1424         r_refdef.entities = Mem_Alloc(cl_refdef_mempool, sizeof(entity_render_t *) * r_refdef.maxentities);
1425         // 256k drawqueue buffer
1426         r_refdef.maxdrawqueuesize = 256 * 1024;
1427         r_refdef.drawqueue = Mem_Alloc(cl_refdef_mempool, r_refdef.maxdrawqueuesize);
1428
1429         SZ_Alloc (&cls.message, 1024, "cls.message");
1430
1431         CL_InitInput ();
1432         CL_InitTEnts ();
1433
1434 //
1435 // register our commands
1436 //
1437         Cvar_RegisterVariable (&cl_name);
1438         Cvar_RegisterVariable (&cl_color);
1439         if (gamemode == GAME_NEHAHRA)
1440                 Cvar_RegisterVariable (&cl_pmodel);
1441         Cvar_RegisterVariable (&cl_upspeed);
1442         Cvar_RegisterVariable (&cl_forwardspeed);
1443         Cvar_RegisterVariable (&cl_backspeed);
1444         Cvar_RegisterVariable (&cl_sidespeed);
1445         Cvar_RegisterVariable (&cl_movespeedkey);
1446         Cvar_RegisterVariable (&cl_yawspeed);
1447         Cvar_RegisterVariable (&cl_pitchspeed);
1448         Cvar_RegisterVariable (&cl_anglespeedkey);
1449         Cvar_RegisterVariable (&cl_shownet);
1450         Cvar_RegisterVariable (&cl_nolerp);
1451         Cvar_RegisterVariable (&lookspring);
1452         Cvar_RegisterVariable (&lookstrafe);
1453         Cvar_RegisterVariable (&sensitivity);
1454         Cvar_RegisterVariable (&freelook);
1455
1456         Cvar_RegisterVariable (&m_pitch);
1457         Cvar_RegisterVariable (&m_yaw);
1458         Cvar_RegisterVariable (&m_forward);
1459         Cvar_RegisterVariable (&m_side);
1460
1461         Cvar_RegisterVariable (&cl_itembobspeed);
1462         Cvar_RegisterVariable (&cl_itembobheight);
1463
1464         Cmd_AddCommand ("entities", CL_PrintEntities_f);
1465         Cmd_AddCommand ("disconnect", CL_Disconnect_f);
1466         Cmd_AddCommand ("record", CL_Record_f);
1467         Cmd_AddCommand ("stop", CL_Stop_f);
1468         Cmd_AddCommand ("playdemo", CL_PlayDemo_f);
1469         Cmd_AddCommand ("timedemo", CL_TimeDemo_f);
1470
1471         Cmd_AddCommand ("fog", CL_Fog_f);
1472
1473         // LordHavoc: added pausedemo
1474         Cmd_AddCommand ("pausedemo", CL_PauseDemo_f);
1475         if (gamemode == GAME_NEHAHRA)
1476                 Cmd_AddCommand ("pmodel", CL_PModel_f);
1477
1478         Cvar_RegisterVariable(&r_draweffects);
1479         Cvar_RegisterVariable(&cl_explosions);
1480         Cvar_RegisterVariable(&cl_stainmaps);
1481         Cvar_RegisterVariable(&cl_beams_polygons);
1482         Cvar_RegisterVariable(&cl_beams_relative);
1483
1484         R_LightningBeams_Init();
1485
1486         CL_Parse_Init();
1487         CL_Particles_Init();
1488         CL_Screen_Init();
1489         CL_CGVM_Init();
1490
1491         CL_Video_Init();
1492 }
1493