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 cl_draweffects = {0, "cl_draweffects", "1"};
  52
  53 mempool_t *cl_scores_mempool;
  54 mempool_t *cl_refdef_mempool;
  55
  56 client_static_t cls;
  57 client_state_t  cl;
  58 // FIXME: put these on hunk?
  59 entity_t                cl_entities[MAX_EDICTS];
  60 entity_t                cl_static_entities[MAX_STATIC_ENTITIES];
  61 lightstyle_t    cl_lightstyle[MAX_LIGHTSTYLES];
  62
  63 typedef struct effect_s
  64 {
  65         int active;
  66         vec3_t origin;
  67         float starttime;
  68         float framerate;
  69         int modelindex;
  70         int startframe;
  71         int endframe;
  72         // these are for interpolation
  73         int frame;
  74         double frame1time;
  75         double frame2time;
  76 }
  77 cl_effect_t;
  78
  79 #define MAX_EFFECTS 256
  80
  81 static cl_effect_t cl_effect[MAX_EFFECTS];
  82
  83
  84 /*
  85 =====================
  86 CL_ClearState
  87
  88 =====================
  89 */
  90 void CL_ClearState (void)
  91 {
  92         int                     i;
  93
  94         if (!sv.active)
  95                 Host_ClearMemory ();
  96
  97         Mem_EmptyPool(cl_scores_mempool);
  98
  99 // wipe the entire cl structure
 100         memset (&cl, 0, sizeof(cl));
 101
 102         SZ_Clear (&cls.message);
 103
 104 // clear other arrays
 105         memset(cl_entities, 0, sizeof(cl_entities));
 106         memset(cl_lightstyle, 0, sizeof(cl_lightstyle));
 107         memset(cl_temp_entities, 0, sizeof(cl_temp_entities));
 108         memset(cl_beams, 0, sizeof(cl_beams));
 109         memset(cl_dlights, 0, sizeof(cl_dlights));
 110         memset(cl_effect, 0, sizeof(cl_effect));
 111         CL_Screen_NewMap();
 112         CL_Particles_Clear();
 113         // LordHavoc: have to set up the baseline info for alpha and other stuff
 114         for (i = 0;i < MAX_EDICTS;i++)
 115         {
 116                 ClearStateToDefault(&cl_entities[i].state_baseline);
 117                 ClearStateToDefault(&cl_entities[i].state_previous);
 118                 ClearStateToDefault(&cl_entities[i].state_current);
 119         }
 120
 121         CL_CGVM_Clear();
 122 }
 123
 124 void CL_LerpUpdate(entity_t *e)
 125 {
 126         entity_persistent_t *p;
 127         entity_render_t *r;
 128         p = &e->persistent;
 129         r = &e->render;
 130
 131         if (p->modelindex != e->state_current.modelindex)
 132         {
 133                 // reset all interpolation information
 134                 p->modelindex = e->state_current.modelindex;
 135                 p->frame1 = p->frame2 = e->state_current.frame;
 136                 p->frame1time = p->frame2time = cl.time;
 137                 p->framelerp = 1;
 138         }
 139         else if (p->frame2 != e->state_current.frame)
 140         {
 141                 // transition to new frame
 142                 p->frame1 = p->frame2;
 143                 p->frame1time = p->frame2time;
 144                 p->frame2 = e->state_current.frame;
 145                 p->frame2time = cl.time;
 146                 p->framelerp = 0;
 147         }
 148         else
 149         {
 150                 // update transition
 151                 p->framelerp = (cl.time - p->frame2time) * 10;
 152                 p->framelerp = bound(0, p->framelerp, 1);
 153         }
 154
 155         r->model = cl.model_precache[e->state_current.modelindex];
 156         Mod_CheckLoaded(r->model);
 157         r->frame = e->state_current.frame;
 158         r->frame1 = p->frame1;
 159         r->frame2 = p->frame2;
 160         r->framelerp = p->framelerp;
 161         r->frame1time = p->frame1time;
 162         r->frame2time = p->frame2time;
 163 }
 164
 165 /*
 166 =====================
 167 CL_Disconnect
 168
 169 Sends a disconnect message to the server
 170 This is also called on Host_Error, so it shouldn't cause any errors
 171 =====================
 172 */
 173 void CL_Disconnect (void)
 174 {
 175         if (cls.state == ca_dedicated)
 176                 return;
 177
 178 // stop sounds (especially looping!)
 179         S_StopAllSounds (true);
 180
 181         // clear contents blends
 182         cl.cshifts[0].percent = 0;
 183         cl.cshifts[1].percent = 0;
 184         cl.cshifts[2].percent = 0;
 185         cl.cshifts[3].percent = 0;
 186
 187         cl.worldmodel = NULL;
 188
 189         if (cls.demoplayback)
 190                 CL_StopPlayback ();
 191         else if (cls.state == ca_connected)
 192         {
 193                 if (cls.demorecording)
 194                         CL_Stop_f ();
 195
 196                 Con_DPrintf ("Sending clc_disconnect\n");
 197                 SZ_Clear (&cls.message);
 198                 MSG_WriteByte (&cls.message, clc_disconnect);
 199                 NET_SendUnreliableMessage (cls.netcon, &cls.message);
 200                 SZ_Clear (&cls.message);
 201                 NET_Close (cls.netcon);
 202                 cls.state = ca_disconnected; // prevent this code from executing again during Host_ShutdownServer
 203                 // if running a local server, shut it down
 204                 if (sv.active)
 205                         Host_ShutdownServer(false);
 206         }
 207         cls.state = ca_disconnected;
 208
 209         cls.demoplayback = cls.timedemo = false;
 210         cls.signon = 0;
 211 }
 212
 213 void CL_Disconnect_f (void)
 214 {
 215         CL_Disconnect ();
 216         if (sv.active)
 217                 Host_ShutdownServer (false);
 218 }
 219
 220
 221
 222
 223 /*
 224 =====================
 225 CL_EstablishConnection
 226
 227 Host should be either "local" or a net address to be passed on
 228 =====================
 229 */
 230 void CL_EstablishConnection (char *host)
 231 {
 232         if (cls.state == ca_dedicated)
 233                 return;
 234
 235         if (cls.demoplayback)
 236                 return;
 237
 238         CL_Disconnect ();
 239
 240         cls.netcon = NET_Connect (host);
 241         if (!cls.netcon)
 242                 Host_Error ("CL_Connect: connect failed\n");
 243         Con_DPrintf ("CL_EstablishConnection: connected to %s\n", host);
 244
 245         cls.demonum = -1;                       // not in the demo loop now
 246         cls.state = ca_connected;
 247         cls.signon = 0;                         // need all the signon messages before playing
 248
 249         CL_ClearState ();
 250 }
 251
 252 /*
 253 ==============
 254 CL_PrintEntities_f
 255 ==============
 256 */
 257 static void CL_PrintEntities_f (void)
 258 {
 259         entity_t        *ent;
 260         int                     i, j;
 261         char            name[32];
 262
 263         for (i = 0, ent = cl_entities;i < MAX_EDICTS /*cl.num_entities*/;i++, ent++)
 264         {
 265                 if (!ent->state_current.active)
 266                         continue;
 267                 if (!ent->render.model)
 268                         continue;
 269
 270                 Con_Printf ("%3i:", i);
 271                 if (!ent->render.model)
 272                 {
 273                         Con_Printf ("EMPTY\n");
 274                         continue;
 275                 }
 276                 strncpy(name, ent->render.model->name, 25);
 277                 name[25] = 0;
 278                 for (j = strlen(name);j < 25;j++)
 279                         name[j] = ' ';
 280                 Con_Printf ("%s:%04i (%5i %5i %5i) [%3i %3i %3i] %4.2f %5.3f\n", 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);
 281         }
 282 }
 283
 284
 285 /*
 286 ===============
 287 CL_LerpPoint
 288
 289 Determines the fraction between the last two messages that the objects
 290 should be put at.
 291 ===============
 292 */
 293 static float CL_LerpPoint (void)
 294 {
 295         float   f;
 296
 297         // dropped packet, or start of demo
 298         if (cl.mtime[1] < cl.mtime[0] - 0.1)
 299                 cl.mtime[1] = cl.mtime[0] - 0.1;
 300
 301         cl.time = bound(cl.mtime[1], cl.time, cl.mtime[0]);
 302
 303         // LordHavoc: lerp in listen games as the server is being capped below the client (usually)
 304         f = cl.mtime[0] - cl.mtime[1];
 305         if (!f || cl_nolerp.integer || cls.timedemo || (sv.active && svs.maxclients == 1))
 306         {
 307                 cl.time = cl.mtime[0];
 308                 return 1;
 309         }
 310
 311         f = (cl.time - cl.mtime[1]) / f;
 312         return bound(0, f, 1);
 313 }
 314
 315 static void CL_RelinkStaticEntities(void)
 316 {
 317         int i;
 318         for (i = 0;i < cl.num_statics && r_refdef.numentities < MAX_VISEDICTS;i++)
 319         {
 320                 Mod_CheckLoaded(cl_static_entities[i].render.model);
 321                 r_refdef.entities[r_refdef.numentities++] = &cl_static_entities[i].render;
 322         }
 323 }
 324
 325 /*
 326 ===============
 327 CL_RelinkEntities
 328 ===============
 329 */
 330 static void CL_RelinkNetworkEntities()
 331 {
 332         entity_t        *ent;
 333         int                     i, glowcolor, effects;
 334         float           f, d, bobjrotate, bobjoffset, dlightradius, glowsize, lerp;
 335         vec3_t          oldorg, neworg, delta, dlightcolor;
 336
 337         bobjrotate = ANGLEMOD(100*cl.time);
 338         if (cl_itembobheight.value)
 339                 bobjoffset = (cos(cl.time * cl_itembobspeed.value * (2.0 * M_PI)) + 1.0) * 0.5 * cl_itembobheight.value;
 340         else
 341                 bobjoffset = 0;
 342
 343 // start on the entity after the world
 344         for (i = 1, ent = cl_entities + 1;i < MAX_EDICTS /*cl.num_entities*/;i++, ent++)
 345         {
 346                 // if the object wasn't included in the latest packet, remove it
 347                 if (!ent->state_current.active)
 348                         continue;
 349
 350                 VectorCopy(ent->persistent.trail_origin, oldorg);
 351
 352                 if (!ent->state_previous.active)
 353                 {
 354                         // only one state available
 355                         lerp = 1;
 356                         VectorCopy (ent->state_current.origin, oldorg); // skip trails
 357                         VectorCopy (ent->state_current.origin, neworg);
 358                         VectorCopy (ent->state_current.angles, ent->render.angles);
 359                 }
 360                 else
 361                 {
 362                         // if the delta is large, assume a teleport and don't lerp
 363                         VectorSubtract(ent->state_current.origin, ent->state_previous.origin, delta);
 364                         // LordHavoc: increased tolerance from 100 to 200, and now to 1000
 365                         if ((sv.active && svs.maxclients == 1 && !(ent->state_current.flags & RENDER_STEP)) || cls.timedemo || DotProduct(delta, delta) > 1000*1000 || cl_nolerp.integer)
 366                                 lerp = 1;
 367                         else
 368                         {
 369                                 f = ent->state_current.time - ent->state_previous.time;
 370                                 if (f > 0)
 371                                         lerp = (cl.time - ent->state_previous.time) / f;
 372                                 else
 373                                         lerp = 1;
 374                         }
 375                         if (lerp >= 1)
 376                         {
 377                                 // no interpolation
 378                                 VectorCopy (ent->state_current.origin, neworg);
 379                                 VectorCopy (ent->state_current.angles, ent->render.angles);
 380                         }
 381                         else
 382                         {
 383                                 // interpolate the origin and angles
 384                                 VectorMA(ent->state_previous.origin, lerp, delta, neworg);
 385                                 VectorSubtract(ent->state_current.angles, ent->state_previous.angles, delta);
 386                                 if (delta[0] < -180) delta[0] += 360;else if (delta[0] >= 180) delta[0] -= 360;
 387                                 if (delta[1] < -180) delta[1] += 360;else if (delta[1] >= 180) delta[1] -= 360;
 388                                 if (delta[2] < -180) delta[2] += 360;else if (delta[2] >= 180) delta[2] -= 360;
 389                                 VectorMA(ent->state_previous.angles, lerp, delta, ent->render.angles);
 390                         }
 391                 }
 392
 393                 VectorCopy (neworg, ent->persistent.trail_origin);
 394                 // persistent.modelindex will be updated by CL_LerpUpdate
 395                 if (ent->state_current.modelindex != ent->persistent.modelindex)
 396                         VectorCopy(neworg, oldorg);
 397
 398                 VectorCopy (neworg, ent->render.origin);
 399                 ent->render.flags = ent->state_current.flags;
 400                 ent->render.effects = effects = ent->state_current.effects;
 401                 if (cl.scores == NULL || !ent->state_current.colormap)
 402                         ent->render.colormap = -1; // no special coloring
 403                 else
 404                         ent->render.colormap = cl.scores[ent->state_current.colormap - 1].colors; // color it
 405                 ent->render.skinnum = ent->state_current.skin;
 406                 ent->render.alpha = ent->state_current.alpha * (1.0f / 255.0f); // FIXME: interpolate?
 407                 ent->render.scale = ent->state_current.scale * (1.0f / 16.0f); // FIXME: interpolate?
 408
 409                 // update interpolation info
 410                 CL_LerpUpdate(ent);
 411
 412                 // handle effects now...
 413                 dlightradius = 0;
 414                 dlightcolor[0] = 0;
 415                 dlightcolor[1] = 0;
 416                 dlightcolor[2] = 0;
 417
 418                 // LordHavoc: if the entity has no effects, don't check each
 419                 if (effects)
 420                 {
 421                         if (effects & EF_BRIGHTFIELD)
 422                                 CL_EntityParticles (ent);
 423                         if (effects & EF_MUZZLEFLASH)
 424                                 ent->persistent.muzzleflash = 100.0f;
 425                         if (effects & EF_DIMLIGHT)
 426                         {
 427                                 dlightcolor[0] += 200.0f;
 428                                 dlightcolor[1] += 200.0f;
 429                                 dlightcolor[2] += 200.0f;
 430                         }
 431                         if (effects & EF_BRIGHTLIGHT)
 432                         {
 433                                 dlightcolor[0] += 400.0f;
 434                                 dlightcolor[1] += 400.0f;
 435                                 dlightcolor[2] += 400.0f;
 436                         }
 437                         // LordHavoc: added EF_RED and EF_BLUE
 438                         if (effects & EF_RED) // red
 439                         {
 440                                 dlightcolor[0] += 200.0f;
 441                                 dlightcolor[1] +=  20.0f;
 442                                 dlightcolor[2] +=  20.0f;
 443                         }
 444                         if (effects & EF_BLUE) // blue
 445                         {
 446                                 dlightcolor[0] +=  20.0f;
 447                                 dlightcolor[1] +=  20.0f;
 448                                 dlightcolor[2] += 200.0f;
 449                         }
 450                         if (effects & EF_FLAME)
 451                         {
 452                                 if (ent->render.model)
 453                                 {
 454                                         vec3_t mins, maxs;
 455                                         int temp;
 456                                         mins[0] = neworg[0] - 16.0f;
 457                                         mins[1] = neworg[1] - 16.0f;
 458                                         mins[2] = neworg[2] - 16.0f;
 459                                         maxs[0] = neworg[0] + 16.0f;
 460                                         maxs[1] = neworg[1] + 16.0f;
 461                                         maxs[2] = neworg[2] + 16.0f;
 462                                         // how many flames to make
 463                                         temp = (int) (cl.time * 300) - (int) (cl.oldtime * 300);
 464                                         CL_FlameCube(mins, maxs, temp);
 465                                 }
 466                                 d = lhrandom(200, 250);
 467                                 dlightcolor[0] += d * 1.0f;
 468                                 dlightcolor[1] += d * 0.7f;
 469                                 dlightcolor[2] += d * 0.3f;
 470                         }
 471                         if (effects & EF_STARDUST)
 472                         {
 473                                 if (ent->render.model)
 474                                 {
 475                                         vec3_t mins, maxs;
 476                                         int temp;
 477                                         mins[0] = neworg[0] - 16.0f;
 478                                         mins[1] = neworg[1] - 16.0f;
 479                                         mins[2] = neworg[2] - 16.0f;
 480                                         maxs[0] = neworg[0] + 16.0f;
 481                                         maxs[1] = neworg[1] + 16.0f;
 482                                         maxs[2] = neworg[2] + 16.0f;
 483                                         // how many particles to make
 484                                         temp = (int) (cl.time * 200) - (int) (cl.oldtime * 200);
 485                                         CL_Stardust(mins, maxs, temp);
 486                                 }
 487                                 d = 100;
 488                                 dlightcolor[0] += d * 1.0f;
 489                                 dlightcolor[1] += d * 0.7f;
 490                                 dlightcolor[2] += d * 0.3f;
 491                         }
 492                 }
 493
 494                 if (ent->persistent.muzzleflash > 0)
 495                 {
 496                         vec3_t v, v2;
 497
 498                         AngleVectors (ent->render.angles, v, NULL, NULL);
 499
 500                         v2[0] = v[0] * 18 + neworg[0];
 501                         v2[1] = v[1] * 18 + neworg[1];
 502                         v2[2] = v[2] * 18 + neworg[2] + 16;
 503                         CL_TraceLine(neworg, v2, v, NULL, 0, true);
 504
 505                         CL_AllocDlight (NULL, v, ent->persistent.muzzleflash, 1, 1, 1, 0, 0);
 506                         ent->persistent.muzzleflash -= cl.frametime * 1000;
 507                 }
 508
 509                 // LordHavoc: if the model has no flags, don't check each
 510                 if (ent->render.model && ent->render.model->flags)
 511                 {
 512                         if (ent->render.model->flags & EF_ROTATE)
 513                         {
 514                                 ent->render.angles[1] = bobjrotate;
 515                                 ent->render.origin[2] += bobjoffset;
 516                         }
 517                         // only do trails if present in the previous frame as well
 518                         if (ent->state_previous.active)
 519                         {
 520                                 if (ent->render.model->flags & EF_GIB)
 521                                         CL_RocketTrail (oldorg, neworg, 2, ent);
 522                                 else if (ent->render.model->flags & EF_ZOMGIB)
 523                                         CL_RocketTrail (oldorg, neworg, 4, ent);
 524                                 else if (ent->render.model->flags & EF_TRACER)
 525                                 {
 526                                         CL_RocketTrail (oldorg, neworg, 3, ent);
 527                                         dlightcolor[0] += 0x10;
 528                                         dlightcolor[1] += 0x40;
 529                                         dlightcolor[2] += 0x10;
 530                                 }
 531                                 else if (ent->render.model->flags & EF_TRACER2)
 532                                 {
 533                                         CL_RocketTrail (oldorg, neworg, 5, ent);
 534                                         dlightcolor[0] += 0x50;
 535                                         dlightcolor[1] += 0x30;
 536                                         dlightcolor[2] += 0x10;
 537                                 }
 538                                 else if (ent->render.model->flags & EF_ROCKET)
 539                                 {
 540                                         CL_RocketTrail (oldorg, ent->render.origin, 0, ent);
 541                                         dlightcolor[0] += 200.0f;
 542                                         dlightcolor[1] += 160.0f;
 543                                         dlightcolor[2] +=  80.0f;
 544                                 }
 545                                 else if (ent->render.model->flags & EF_GRENADE)
 546                                 {
 547                                         if (ent->render.alpha == -1) // LordHavoc: Nehahra dem compatibility
 548                                                 CL_RocketTrail (oldorg, neworg, 7, ent);
 549                                         else
 550                                                 CL_RocketTrail (oldorg, neworg, 1, ent);
 551                                 }
 552                                 else if (ent->render.model->flags & EF_TRACER3)
 553                                 {
 554                                         CL_RocketTrail (oldorg, neworg, 6, ent);
 555                                         dlightcolor[0] += 0x50;
 556                                         dlightcolor[1] += 0x20;
 557                                         dlightcolor[2] += 0x40;
 558                                 }
 559                         }
 560                 }
 561                 // LordHavoc: customizable glow
 562                 glowsize = ent->state_current.glowsize; // FIXME: interpolate?
 563                 glowcolor = ent->state_current.glowcolor;
 564                 if (glowsize)
 565                 {
 566                         qbyte *tempcolor = (qbyte *)&d_8to24table[glowcolor];
 567                         // * 4 for the expansion from 0-255 to 0-1023 range,
 568                         // / 255 to scale down byte colors
 569                         glowsize *= (4.0f / 255.0f);
 570                         VectorMA(dlightcolor, glowsize, tempcolor, dlightcolor);
 571                 }
 572                 // LordHavoc: customizable trail
 573                 if (ent->render.flags & RENDER_GLOWTRAIL)
 574                         CL_RocketTrail2 (oldorg, neworg, glowcolor, ent);
 575
 576                 if (dlightcolor[0] || dlightcolor[1] || dlightcolor[2])
 577                 {
 578                         vec3_t vec;
 579                         VectorCopy(neworg, vec);
 580                         // hack to make glowing player light shine on their gun
 581                         if (i == cl.viewentity && !chase_active.integer)
 582                                 vec[2] += 30;
 583                         CL_AllocDlight (NULL, vec, 1, dlightcolor[0], dlightcolor[1], dlightcolor[2], 0, 0);
 584                 }
 585
 586                 if (chase_active.integer)
 587                 {
 588                         if (ent->render.flags & RENDER_VIEWMODEL)
 589                                 continue;
 590                 }
 591                 else
 592                 {
 593                         if (i == cl.viewentity || (ent->render.flags & RENDER_EXTERIORMODEL))
 594                                 continue;
 595                 }
 596
 597                 if (ent->render.model == NULL)
 598                         continue;
 599                 if (effects & EF_NODRAW)
 600                         continue;
 601                 if (r_refdef.numentities < MAX_VISEDICTS)
 602                         r_refdef.entities[r_refdef.numentities++] = &ent->render;
 603         }
 604 }
 605
 606 void CL_LerpPlayer(float frac)
 607 {
 608         int i;
 609         float d;
 610
 611         if (cl.entitydatabase.numframes)
 612         {
 613                 cl.viewentorigin[0] = cl.viewentoriginold[0] + frac * (cl.viewentoriginnew[0] - cl.viewentoriginold[0]);
 614                 cl.viewentorigin[1] = cl.viewentoriginold[1] + frac * (cl.viewentoriginnew[1] - cl.viewentoriginold[1]);
 615                 cl.viewentorigin[2] = cl.viewentoriginold[2] + frac * (cl.viewentoriginnew[2] - cl.viewentoriginold[2]);
 616         }
 617         else
 618                 VectorCopy (cl_entities[cl.viewentity].render.origin, cl.viewentorigin);
 619
 620         cl.viewzoom = cl.viewzoomold + frac * (cl.viewzoomnew - cl.viewzoomold);
 621
 622         for (i = 0;i < 3;i++)
 623                 cl.velocity[i] = cl.mvelocity[1][i] + frac * (cl.mvelocity[0][i] - cl.mvelocity[1][i]);
 624
 625         if (cls.demoplayback)
 626         {
 627                 // interpolate the angles
 628                 for (i = 0;i < 3;i++)
 629                 {
 630                         d = cl.mviewangles[0][i] - cl.mviewangles[1][i];
 631                         if (d > 180)
 632                                 d -= 360;
 633                         else if (d < -180)
 634                                 d += 360;
 635                         cl.viewangles[i] = cl.mviewangles[1][i] + frac*d;
 636                 }
 637         }
 638 }
 639
 640 void CL_Effect(vec3_t org, int modelindex, int startframe, int framecount, float framerate)
 641 {
 642         int i;
 643         cl_effect_t *e;
 644         if (!modelindex) // sanity check
 645                 return;
 646         for (i = 0, e = cl_effect;i < MAX_EFFECTS;i++, e++)
 647         {
 648                 if (e->active)
 649                         continue;
 650                 e->active = true;
 651                 VectorCopy(org, e->origin);
 652                 e->modelindex = modelindex;
 653                 e->starttime = cl.time;
 654                 e->startframe = startframe;
 655                 e->endframe = startframe + framecount;
 656                 e->framerate = framerate;
 657
 658                 e->frame = 0;
 659                 e->frame1time = cl.time;
 660                 e->frame2time = cl.time;
 661                 break;
 662         }
 663 }
 664
 665 static void CL_RelinkEffects()
 666 {
 667         int i, intframe;
 668         cl_effect_t *e;
 669         entity_t *vis;
 670         float frame;
 671
 672         for (i = 0, e = cl_effect;i < MAX_EFFECTS;i++, e++)
 673         {
 674                 if (e->active)
 675                 {
 676                         frame = (cl.time - e->starttime) * e->framerate + e->startframe;
 677                         intframe = frame;
 678                         if (intframe < 0 || intframe >= e->endframe)
 679                         {
 680                                 e->active = false;
 681                                 memset(e, 0, sizeof(*e));
 682                                 continue;
 683                         }
 684
 685                         if (intframe != e->frame)
 686                         {
 687                                 e->frame = intframe;
 688                                 e->frame1time = e->frame2time;
 689                                 e->frame2time = cl.time;
 690                         }
 691
 692                         if ((vis = CL_NewTempEntity()))
 693                         {
 694                                 // interpolation stuff
 695                                 vis->render.frame1 = intframe;
 696                                 vis->render.frame2 = intframe + 1;
 697                                 if (vis->render.frame2 >= e->endframe)
 698                                         vis->render.frame2 = -1; // disappear
 699                                 vis->render.framelerp = frame - intframe;
 700                                 vis->render.frame1time = e->frame1time;
 701                                 vis->render.frame2time = e->frame2time;
 702
 703                                 // normal stuff
 704                                 VectorCopy(e->origin, vis->render.origin);
 705                                 vis->render.model = cl.model_precache[e->modelindex];
 706                                 vis->render.frame = vis->render.frame2;
 707                                 vis->render.colormap = -1; // no special coloring
 708                                 vis->render.scale = 1;
 709                                 vis->render.alpha = 1;
 710                         }
 711                 }
 712         }
 713 }
 714
 715 void CL_RelinkEntities (void)
 716 {
 717         float frac;
 718
 719         // fraction from previous network update to current
 720         frac = CL_LerpPoint ();
 721
 722         CL_DecayLights ();
 723         CL_RelinkStaticEntities();
 724         CL_RelinkNetworkEntities();
 725         CL_TraceLine_ScanForBModels();
 726         CL_RelinkEffects();
 727         CL_MoveParticles();
 728         CL_UpdateTEnts();
 729
 730         CL_LerpPlayer(frac);
 731 }
 732
 733
 734 /*
 735 ===============
 736 CL_ReadFromServer
 737
 738 Read all incoming data from the server
 739 ===============
 740 */
 741 int CL_ReadFromServer (void)
 742 {
 743         int ret, netshown;
 744
 745         cl.oldtime = cl.time;
 746         cl.time += cl.frametime;
 747
 748         netshown = false;
 749         do
 750         {
 751                 ret = CL_GetMessage ();
 752                 if (ret == -1)
 753                         Host_Error ("CL_ReadFromServer: lost server connection");
 754                 if (!ret)
 755                         break;
 756
 757                 cl.last_received_message = realtime;
 758
 759                 if (cl_shownet.integer)
 760                         netshown = true;
 761
 762                 CL_ParseServerMessage ();
 763         }
 764         while (ret && cls.state == ca_connected);
 765
 766         if (netshown)
 767                 Con_Printf ("\n");
 768
 769         r_refdef.numentities = 0;
 770         if (cls.state == ca_connected && cl.worldmodel)
 771         {
 772                 CL_RelinkEntities ();
 773
 774                 // run cgame code (which can add more entities)
 775                 CL_CGVM_Frame();
 776         }
 777
 778 //
 779 // bring the links up to date
 780 //
 781         return 0;
 782 }
 783
 784 /*
 785 =================
 786 CL_SendCmd
 787 =================
 788 */
 789 void CL_SendCmd (void)
 790 {
 791         usercmd_t               cmd;
 792
 793         if (cls.state != ca_connected)
 794                 return;
 795
 796         if (cls.signon == SIGNONS)
 797         {
 798         // get basic movement from keyboard
 799                 CL_BaseMove (&cmd);
 800
 801                 IN_PreMove(); // OS independent code
 802
 803         // allow mice or other external controllers to add to the move
 804                 IN_Move (&cmd);
 805
 806                 IN_PostMove(); // OS independent code
 807
 808         // send the unreliable message
 809                 CL_SendMove (&cmd);
 810         }
 811 #ifndef NOROUTINGFIX
 812         else
 813         {
 814                 // LordHavoc: fix for NAT routing of netquake:
 815                 // bounce back a clc_nop message to the newly allocated server port,
 816                 // to establish a routing connection for incoming frames,
 817                 // the server waits for this before sending anything
 818                 if (realtime > cl.sendnoptime)
 819                 {
 820                         Con_DPrintf("sending clc_nop to get server's attention\n");
 821                         cl.sendnoptime = realtime + 3;
 822                         MSG_WriteByte(&cls.message, clc_nop);
 823                 }
 824         }
 825 #endif
 826
 827         if (cls.demoplayback)
 828         {
 829                 SZ_Clear (&cls.message);
 830                 return;
 831         }
 832
 833 // send the reliable message
 834         if (!cls.message.cursize)
 835                 return;         // no message at all
 836
 837         if (!NET_CanSendMessage (cls.netcon))
 838         {
 839                 Con_DPrintf ("CL_WriteToServer: can't send\n");
 840                 return;
 841         }
 842
 843         if (NET_SendMessage (cls.netcon, &cls.message) == -1)
 844                 Host_Error ("CL_WriteToServer: lost server connection");
 845
 846         SZ_Clear (&cls.message);
 847 }
 848
 849 // LordHavoc: pausedemo command
 850 static void CL_PauseDemo_f (void)
 851 {
 852         cls.demopaused = !cls.demopaused;
 853         if (cls.demopaused)
 854                 Con_Printf("Demo paused\n");
 855         else
 856                 Con_Printf("Demo unpaused\n");
 857 }
 858
 859 /*
 860 ======================
 861 CL_PModel_f
 862 LordHavoc: Intended for Nehahra, I personally think this is dumb, but Mindcrime won't listen.
 863 ======================
 864 */
 865 static void CL_PModel_f (void)
 866 {
 867         int i;
 868         eval_t *val;
 869
 870         if (Cmd_Argc () == 1)
 871         {
 872                 Con_Printf ("\"pmodel\" is \"%s\"\n", cl_pmodel.string);
 873                 return;
 874         }
 875         i = atoi(Cmd_Argv(1));
 876
 877         if (cmd_source == src_command)
 878         {
 879                 if (cl_pmodel.integer == i)
 880                         return;
 881                 Cvar_SetValue ("_cl_pmodel", i);
 882                 if (cls.state == ca_connected)
 883                         Cmd_ForwardToServer ();
 884                 return;
 885         }
 886
 887         host_client->pmodel = i;
 888         if ((val = GETEDICTFIELDVALUE(host_client->edict, eval_pmodel)))
 889                 val->_float = i;
 890 }
 891
 892 /*
 893 ======================
 894 CL_Fog_f
 895 ======================
 896 */
 897 static void CL_Fog_f (void)
 898 {
 899         if (Cmd_Argc () == 1)
 900         {
 901                 Con_Printf ("\"fog\" is \"%f %f %f %f\"\n", fog_density, fog_red, fog_green, fog_blue);
 902                 return;
 903         }
 904         fog_density = atof(Cmd_Argv(1));
 905         fog_red = atof(Cmd_Argv(2));
 906         fog_green = atof(Cmd_Argv(3));
 907         fog_blue = atof(Cmd_Argv(4));
 908 }
 909
 910 /*
 911 =================
 912 CL_Init
 913 =================
 914 */
 915 void CL_Init (void)
 916 {
 917         cl_scores_mempool = Mem_AllocPool("client player info");
 918
 919         cl_refdef_mempool = Mem_AllocPool("refdef");
 920         memset(&r_refdef, 0, sizeof(r_refdef));
 921         r_refdef.entities = Mem_Alloc(cl_refdef_mempool, sizeof(entity_render_t *) * MAX_VISEDICTS);
 922
 923         SZ_Alloc (&cls.message, 1024, "cls.message");
 924
 925         CL_InitInput ();
 926         CL_InitTEnts ();
 927
 928 //
 929 // register our commands
 930 //
 931         Cvar_RegisterVariable (&cl_name);
 932         Cvar_RegisterVariable (&cl_color);
 933         if (gamemode == GAME_NEHAHRA)
 934                 Cvar_RegisterVariable (&cl_pmodel);
 935         Cvar_RegisterVariable (&cl_upspeed);
 936         Cvar_RegisterVariable (&cl_forwardspeed);
 937         Cvar_RegisterVariable (&cl_backspeed);
 938         Cvar_RegisterVariable (&cl_sidespeed);
 939         Cvar_RegisterVariable (&cl_movespeedkey);
 940         Cvar_RegisterVariable (&cl_yawspeed);
 941         Cvar_RegisterVariable (&cl_pitchspeed);
 942         Cvar_RegisterVariable (&cl_anglespeedkey);
 943         Cvar_RegisterVariable (&cl_shownet);
 944         Cvar_RegisterVariable (&cl_nolerp);
 945         Cvar_RegisterVariable (&lookspring);
 946         Cvar_RegisterVariable (&lookstrafe);
 947         Cvar_RegisterVariable (&sensitivity);
 948         Cvar_RegisterVariable (&freelook);
 949
 950         Cvar_RegisterVariable (&m_pitch);
 951         Cvar_RegisterVariable (&m_yaw);
 952         Cvar_RegisterVariable (&m_forward);
 953         Cvar_RegisterVariable (&m_side);
 954
 955         Cvar_RegisterVariable (&cl_itembobspeed);
 956         Cvar_RegisterVariable (&cl_itembobheight);
 957
 958         Cmd_AddCommand ("entities", CL_PrintEntities_f);
 959         Cmd_AddCommand ("bitprofile", CL_BitProfile_f);
 960         Cmd_AddCommand ("disconnect", CL_Disconnect_f);
 961         Cmd_AddCommand ("record", CL_Record_f);
 962         Cmd_AddCommand ("stop", CL_Stop_f);
 963         Cmd_AddCommand ("playdemo", CL_PlayDemo_f);
 964         Cmd_AddCommand ("timedemo", CL_TimeDemo_f);
 965
 966         Cmd_AddCommand ("fog", CL_Fog_f);
 967
 968         // LordHavoc: added pausedemo
 969         Cmd_AddCommand ("pausedemo", CL_PauseDemo_f);
 970         if (gamemode == GAME_NEHAHRA)
 971                 Cmd_AddCommand ("pmodel", CL_PModel_f);
 972
 973         Cvar_RegisterVariable(&cl_draweffects);
 974
 975         CL_Parse_Init();
 976         CL_Particles_Init();
 977         CL_Screen_Init();
 978         CL_CGVM_Init();
 979
 980         CL_Video_Init();
 981 }
 982