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
  25 // we need to declare some mouse variables here, because the menu system
  26 // references them even when on a unix system.
  27
  28 // these two are not intended to be set directly
  29 cvar_t cl_name = {CVAR_SAVE, "_cl_name", "player"};
  30 cvar_t cl_color = {CVAR_SAVE, "_cl_color", "0"};
  31 cvar_t cl_pmodel = {CVAR_SAVE, "_cl_pmodel", "0"};
  32
  33 cvar_t cl_shownet = {0, "cl_shownet","0"};
  34 cvar_t cl_nolerp = {0, "cl_nolerp", "0"};
  35
  36 cvar_t cl_itembobheight = {0, "cl_itembobheight", "8"};
  37 cvar_t cl_itembobspeed = {0, "cl_itembobspeed", "0.5"};
  38
  39 cvar_t lookspring = {CVAR_SAVE, "lookspring","0"};
  40 cvar_t lookstrafe = {CVAR_SAVE, "lookstrafe","0"};
  41 cvar_t sensitivity = {CVAR_SAVE, "sensitivity","3", 1, 30};
  42
  43 cvar_t m_pitch = {CVAR_SAVE, "m_pitch","0.022"};
  44 cvar_t m_yaw = {CVAR_SAVE, "m_yaw","0.022"};
  45 cvar_t m_forward = {CVAR_SAVE, "m_forward","1"};
  46 cvar_t m_side = {CVAR_SAVE, "m_side","0.8"};
  47
  48 cvar_t freelook = {CVAR_SAVE, "freelook", "1"};
  49
  50 cvar_t cl_draweffects = {0, "cl_draweffects", "1"};
  51
  52 mempool_t *cl_scores_mempool;
  53 mempool_t *cl_refdef_mempool;
  54
  55 client_static_t cls;
  56 client_state_t  cl;
  57 // FIXME: put these on hunk?
  58 entity_t                cl_entities[MAX_EDICTS];
  59 entity_t                cl_static_entities[MAX_STATIC_ENTITIES];
  60 lightstyle_t    cl_lightstyle[MAX_LIGHTSTYLES];
  61
  62 typedef struct effect_s
  63 {
  64         int active;
  65         vec3_t origin;
  66         float starttime;
  67         float framerate;
  68         int modelindex;
  69         int startframe;
  70         int endframe;
  71         // these are for interpolation
  72         int frame;
  73         double frame1time;
  74         double frame2time;
  75 }
  76 cl_effect_t;
  77
  78 #define MAX_EFFECTS 256
  79
  80 static cl_effect_t cl_effect[MAX_EFFECTS];
  81
  82
  83 /*
  84 =====================
  85 CL_ClearState
  86
  87 =====================
  88 */
  89 void CL_ClearState (void)
  90 {
  91         int                     i;
  92
  93         if (!sv.active)
  94                 Host_ClearMemory ();
  95
  96         Mem_EmptyPool(cl_scores_mempool);
  97
  98 // wipe the entire cl structure
  99         memset (&cl, 0, sizeof(cl));
 100
 101         SZ_Clear (&cls.message);
 102
 103 // clear other arrays
 104         memset(cl_entities, 0, sizeof(cl_entities));
 105         memset(cl_lightstyle, 0, sizeof(cl_lightstyle));
 106         memset(cl_temp_entities, 0, sizeof(cl_temp_entities));
 107         memset(cl_beams, 0, sizeof(cl_beams));
 108         memset(cl_dlights, 0, sizeof(cl_dlights));
 109         memset(cl_effect, 0, sizeof(cl_effect));
 110         CL_Screen_NewMap();
 111         CL_Particles_Clear();
 112         // LordHavoc: have to set up the baseline info for alpha and other stuff
 113         for (i = 0;i < MAX_EDICTS;i++)
 114         {
 115                 ClearStateToDefault(&cl_entities[i].state_baseline);
 116                 ClearStateToDefault(&cl_entities[i].state_previous);
 117                 ClearStateToDefault(&cl_entities[i].state_current);
 118         }
 119
 120         CL_CGVM_Clear();
 121 }
 122
 123 void CL_LerpUpdate(entity_t *e)
 124 {
 125         entity_persistent_t *p;
 126         entity_render_t *r;
 127         p = &e->persistent;
 128         r = &e->render;
 129
 130         if (p->modelindex != e->state_current.modelindex)
 131         {
 132                 // reset all interpolation information
 133                 p->modelindex = e->state_current.modelindex;
 134                 p->frame1 = p->frame2 = e->state_current.frame;
 135                 p->frame1time = p->frame2time = cl.time;
 136                 p->framelerp = 1;
 137         }
 138         else if (p->frame2 != e->state_current.frame)
 139         {
 140                 // transition to new frame
 141                 p->frame1 = p->frame2;
 142                 p->frame1time = p->frame2time;
 143                 p->frame2 = e->state_current.frame;
 144                 p->frame2time = cl.time;
 145                 p->framelerp = 0;
 146         }
 147         else
 148         {
 149                 // update transition
 150                 p->framelerp = (cl.time - p->frame2time) * 10;
 151                 p->framelerp = bound(0, p->framelerp, 1);
 152         }
 153
 154         r->model = cl.model_precache[e->state_current.modelindex];
 155         Mod_CheckLoaded(r->model);
 156         r->frame = e->state_current.frame;
 157         r->frame1 = p->frame1;
 158         r->frame2 = p->frame2;
 159         r->framelerp = p->framelerp;
 160         r->frame1time = p->frame1time;
 161         r->frame2time = p->frame2time;
 162 }
 163
 164 /*
 165 =====================
 166 CL_Disconnect
 167
 168 Sends a disconnect message to the server
 169 This is also called on Host_Error, so it shouldn't cause any errors
 170 =====================
 171 */
 172 void CL_Disconnect (void)
 173 {
 174         if (cls.state == ca_dedicated)
 175                 return;
 176
 177 // stop sounds (especially looping!)
 178         S_StopAllSounds (true);
 179
 180         // clear contents blends
 181         cl.cshifts[0].percent = 0;
 182         cl.cshifts[1].percent = 0;
 183         cl.cshifts[2].percent = 0;
 184         cl.cshifts[3].percent = 0;
 185
 186         cl.worldmodel = NULL;
 187
 188         if (cls.demoplayback)
 189                 CL_StopPlayback ();
 190         else if (cls.state == ca_connected)
 191         {
 192                 if (cls.demorecording)
 193                         CL_Stop_f ();
 194
 195                 Con_DPrintf ("Sending clc_disconnect\n");
 196                 SZ_Clear (&cls.message);
 197                 MSG_WriteByte (&cls.message, clc_disconnect);
 198                 NET_SendUnreliableMessage (cls.netcon, &cls.message);
 199                 SZ_Clear (&cls.message);
 200                 NET_Close (cls.netcon);
 201                 cls.state = ca_disconnected; // prevent this code from executing again during Host_ShutdownServer
 202                 // if running a local server, shut it down
 203                 if (sv.active)
 204                         Host_ShutdownServer(false);
 205         }
 206         cls.state = ca_disconnected;
 207
 208         cls.demoplayback = cls.timedemo = false;
 209         cls.signon = 0;
 210 }
 211
 212 void CL_Disconnect_f (void)
 213 {
 214         CL_Disconnect ();
 215         if (sv.active)
 216                 Host_ShutdownServer (false);
 217 }
 218
 219
 220
 221
 222 /*
 223 =====================
 224 CL_EstablishConnection
 225
 226 Host should be either "local" or a net address to be passed on
 227 =====================
 228 */
 229 void CL_EstablishConnection (char *host)
 230 {
 231         if (cls.state == ca_dedicated)
 232                 return;
 233
 234         if (cls.demoplayback)
 235                 return;
 236
 237         CL_Disconnect ();
 238
 239         cls.netcon = NET_Connect (host);
 240         if (!cls.netcon)
 241                 Host_Error ("CL_Connect: connect failed\n");
 242         Con_DPrintf ("CL_EstablishConnection: connected to %s\n", host);
 243
 244         cls.demonum = -1;                       // not in the demo loop now
 245         cls.state = ca_connected;
 246         cls.signon = 0;                         // need all the signon messages before playing
 247
 248         CL_ClearState ();
 249 }
 250
 251 /*
 252 ==============
 253 CL_PrintEntities_f
 254 ==============
 255 */
 256 static void CL_PrintEntities_f (void)
 257 {
 258         entity_t        *ent;
 259         int                     i, j;
 260         char            name[32];
 261
 262         for (i = 0, ent = cl_entities;i < MAX_EDICTS /*cl.num_entities*/;i++, ent++)
 263         {
 264                 if (!ent->state_current.active)
 265                         continue;
 266                 if (!ent->render.model)
 267                         continue;
 268
 269                 Con_Printf ("%3i:", i);
 270                 if (!ent->render.model)
 271                 {
 272                         Con_Printf ("EMPTY\n");
 273                         continue;
 274                 }
 275                 strncpy(name, ent->render.model->name, 25);
 276                 name[25] = 0;
 277                 for (j = strlen(name);j < 25;j++)
 278                         name[j] = ' ';
 279                 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);
 280         }
 281 }
 282
 283
 284 /*
 285 ===============
 286 CL_LerpPoint
 287
 288 Determines the fraction between the last two messages that the objects
 289 should be put at.
 290 ===============
 291 */
 292 static float CL_LerpPoint (void)
 293 {
 294         float   f;
 295
 296         // dropped packet, or start of demo
 297         if (cl.mtime[1] < cl.mtime[0] - 0.1)
 298                 cl.mtime[1] = cl.mtime[0] - 0.1;
 299
 300         cl.time = bound(cl.mtime[1], cl.time, cl.mtime[0]);
 301
 302         // LordHavoc: lerp in listen games as the server is being capped below the client (usually)
 303         f = cl.mtime[0] - cl.mtime[1];
 304         if (!f || cl_nolerp.integer || cls.timedemo || (sv.active && svs.maxclients == 1))
 305         {
 306                 cl.time = cl.mtime[0];
 307                 return 1;
 308         }
 309
 310         f = (cl.time - cl.mtime[1]) / f;
 311         return bound(0, f, 1);
 312 }
 313
 314 static void CL_RelinkStaticEntities(void)
 315 {
 316         int i;
 317         for (i = 0;i < cl.num_statics && r_refdef.numentities < MAX_VISEDICTS;i++)
 318         {
 319                 Mod_CheckLoaded(cl_static_entities[i].render.model);
 320                 r_refdef.entities[r_refdef.numentities++] = &cl_static_entities[i].render;
 321         }
 322 }
 323
 324 /*
 325 ===============
 326 CL_RelinkEntities
 327 ===============
 328 */
 329 static void CL_RelinkNetworkEntities()
 330 {
 331         entity_t        *ent;
 332         int                     i, glowcolor, effects;
 333         float           f, d, bobjrotate, bobjoffset, dlightradius, glowsize, lerp;
 334         vec3_t          oldorg, neworg, delta, dlightcolor;
 335
 336         bobjrotate = ANGLEMOD(100*cl.time);
 337         if (cl_itembobheight.value)
 338                 bobjoffset = (cos(cl.time * cl_itembobspeed.value * (2.0 * M_PI)) + 1.0) * 0.5 * cl_itembobheight.value;
 339         else
 340                 bobjoffset = 0;
 341
 342 // start on the entity after the world
 343         for (i = 1, ent = cl_entities + 1;i < MAX_EDICTS /*cl.num_entities*/;i++, ent++)
 344         {
 345                 // if the object wasn't included in the latest packet, remove it
 346                 if (!ent->state_current.active)
 347                         continue;
 348
 349                 VectorCopy(ent->persistent.trail_origin, oldorg);
 350
 351                 if (!ent->state_previous.active)
 352                 {
 353                         // only one state available
 354                         lerp = 1;
 355                         VectorCopy (ent->state_current.origin, oldorg); // skip trails
 356                         VectorCopy (ent->state_current.origin, neworg);
 357                         VectorCopy (ent->state_current.angles, ent->render.angles);
 358                 }
 359                 else
 360                 {
 361                         // if the delta is large, assume a teleport and don't lerp
 362                         VectorSubtract(ent->state_current.origin, ent->state_previous.origin, delta);
 363                         // LordHavoc: increased tolerance from 100 to 200, and now to 1000
 364                         if ((sv.active && svs.maxclients == 1 && !(ent->state_current.flags & RENDER_STEP)) || cls.timedemo || DotProduct(delta, delta) > 1000*1000 || cl_nolerp.integer)
 365                                 lerp = 1;
 366                         else
 367                         {
 368                                 f = ent->state_current.time - ent->state_previous.time;
 369                                 if (f > 0)
 370                                         lerp = (cl.time - ent->state_previous.time) / f;
 371                                 else
 372                                         lerp = 1;
 373                         }
 374                         if (lerp >= 1)
 375                         {
 376                                 // no interpolation
 377                                 VectorCopy (ent->state_current.origin, neworg);
 378                                 VectorCopy (ent->state_current.angles, ent->render.angles);
 379                         }
 380                         else
 381                         {
 382                                 // interpolate the origin and angles
 383                                 VectorMA(ent->state_previous.origin, lerp, delta, neworg);
 384                                 VectorSubtract(ent->state_current.angles, ent->state_previous.angles, delta);
 385                                 if (delta[0] < -180) delta[0] += 360;else if (delta[0] >= 180) delta[0] -= 360;
 386                                 if (delta[1] < -180) delta[1] += 360;else if (delta[1] >= 180) delta[1] -= 360;
 387                                 if (delta[2] < -180) delta[2] += 360;else if (delta[2] >= 180) delta[2] -= 360;
 388                                 VectorMA(ent->state_previous.angles, lerp, delta, ent->render.angles);
 389                         }
 390                 }
 391
 392                 VectorCopy (neworg, ent->persistent.trail_origin);
 393                 // persistent.modelindex will be updated by CL_LerpUpdate
 394                 if (ent->state_current.modelindex != ent->persistent.modelindex)
 395                         VectorCopy(neworg, oldorg);
 396
 397                 VectorCopy (neworg, ent->render.origin);
 398                 ent->render.flags = ent->state_current.flags;
 399                 ent->render.effects = effects = ent->state_current.effects;
 400                 if (cl.scores == NULL || !ent->state_current.colormap)
 401                         ent->render.colormap = -1; // no special coloring
 402                 else
 403                         ent->render.colormap = cl.scores[ent->state_current.colormap - 1].colors; // color it
 404                 ent->render.skinnum = ent->state_current.skin;
 405                 ent->render.alpha = ent->state_current.alpha * (1.0f / 255.0f); // FIXME: interpolate?
 406                 ent->render.scale = ent->state_current.scale * (1.0f / 16.0f); // FIXME: interpolate?
 407
 408                 // update interpolation info
 409                 CL_LerpUpdate(ent);
 410
 411                 // handle effects now...
 412                 dlightradius = 0;
 413                 dlightcolor[0] = 0;
 414                 dlightcolor[1] = 0;
 415                 dlightcolor[2] = 0;
 416
 417                 // LordHavoc: if the entity has no effects, don't check each
 418                 if (effects)
 419                 {
 420                         if (effects & EF_BRIGHTFIELD)
 421                                 CL_EntityParticles (ent);
 422                         if (effects & EF_MUZZLEFLASH)
 423                                 ent->persistent.muzzleflash = 100.0f;
 424                         if (effects & EF_DIMLIGHT)
 425                         {
 426                                 dlightcolor[0] += 200.0f;
 427                                 dlightcolor[1] += 200.0f;
 428                                 dlightcolor[2] += 200.0f;
 429                         }
 430                         if (effects & EF_BRIGHTLIGHT)
 431                         {
 432                                 dlightcolor[0] += 400.0f;
 433                                 dlightcolor[1] += 400.0f;
 434                                 dlightcolor[2] += 400.0f;
 435                         }
 436                         // LordHavoc: added EF_RED and EF_BLUE
 437                         if (effects & EF_RED) // red
 438                         {
 439                                 dlightcolor[0] += 200.0f;
 440                                 dlightcolor[1] +=  20.0f;
 441                                 dlightcolor[2] +=  20.0f;
 442                         }
 443                         if (effects & EF_BLUE) // blue
 444                         {
 445                                 dlightcolor[0] +=  20.0f;
 446                                 dlightcolor[1] +=  20.0f;
 447                                 dlightcolor[2] += 200.0f;
 448                         }
 449                         if (effects & EF_FLAME)
 450                         {
 451                                 if (ent->render.model)
 452                                 {
 453                                         vec3_t mins, maxs;
 454                                         int temp;
 455                                         mins[0] = neworg[0] - 16.0f;
 456                                         mins[1] = neworg[1] - 16.0f;
 457                                         mins[2] = neworg[2] - 16.0f;
 458                                         maxs[0] = neworg[0] + 16.0f;
 459                                         maxs[1] = neworg[1] + 16.0f;
 460                                         maxs[2] = neworg[2] + 16.0f;
 461                                         // how many flames to make
 462                                         temp = (int) (cl.time * 300) - (int) (cl.oldtime * 300);
 463                                         CL_FlameCube(mins, maxs, temp);
 464                                 }
 465                                 d = lhrandom(200, 250);
 466                                 dlightcolor[0] += d * 1.0f;
 467                                 dlightcolor[1] += d * 0.7f;
 468                                 dlightcolor[2] += d * 0.3f;
 469                         }
 470                         if (effects & EF_STARDUST)
 471                         {
 472                                 if (ent->render.model)
 473                                 {
 474                                         vec3_t mins, maxs;
 475                                         int temp;
 476                                         mins[0] = neworg[0] - 16.0f;
 477                                         mins[1] = neworg[1] - 16.0f;
 478                                         mins[2] = neworg[2] - 16.0f;
 479                                         maxs[0] = neworg[0] + 16.0f;
 480                                         maxs[1] = neworg[1] + 16.0f;
 481                                         maxs[2] = neworg[2] + 16.0f;
 482                                         // how many particles to make
 483                                         temp = (int) (cl.time * 200) - (int) (cl.oldtime * 200);
 484                                         CL_Stardust(mins, maxs, temp);
 485                                 }
 486                                 d = 100;
 487                                 dlightcolor[0] += d * 1.0f;
 488                                 dlightcolor[1] += d * 0.7f;
 489                                 dlightcolor[2] += d * 0.3f;
 490                         }
 491                 }
 492
 493                 if (ent->persistent.muzzleflash > 0)
 494                 {
 495                         vec3_t v, v2;
 496
 497                         AngleVectors (ent->render.angles, v, NULL, NULL);
 498
 499                         v2[0] = v[0] * 18 + neworg[0];
 500                         v2[1] = v[1] * 18 + neworg[1];
 501                         v2[2] = v[2] * 18 + neworg[2] + 16;
 502                         CL_TraceLine(neworg, v2, v, NULL, 0, true);
 503
 504                         CL_AllocDlight (NULL, v, ent->persistent.muzzleflash, 1, 1, 1, 0, 0);
 505                         ent->persistent.muzzleflash -= cl.frametime * 1000;
 506                 }
 507
 508                 // LordHavoc: if the model has no flags, don't check each
 509                 if (ent->render.model && ent->render.model->flags)
 510                 {
 511                         if (ent->render.model->flags & EF_ROTATE)
 512                         {
 513                                 ent->render.angles[1] = bobjrotate;
 514                                 ent->render.origin[2] += bobjoffset;
 515                         }
 516                         // only do trails if present in the previous frame as well
 517                         if (ent->state_previous.active)
 518                         {
 519                                 if (ent->render.model->flags & EF_GIB)
 520                                         CL_RocketTrail (oldorg, neworg, 2, ent);
 521                                 else if (ent->render.model->flags & EF_ZOMGIB)
 522                                         CL_RocketTrail (oldorg, neworg, 4, ent);
 523                                 else if (ent->render.model->flags & EF_TRACER)
 524                                 {
 525                                         CL_RocketTrail (oldorg, neworg, 3, ent);
 526                                         dlightcolor[0] += 0x10;
 527                                         dlightcolor[1] += 0x40;
 528                                         dlightcolor[2] += 0x10;
 529                                 }
 530                                 else if (ent->render.model->flags & EF_TRACER2)
 531                                 {
 532                                         CL_RocketTrail (oldorg, neworg, 5, ent);
 533                                         dlightcolor[0] += 0x50;
 534                                         dlightcolor[1] += 0x30;
 535                                         dlightcolor[2] += 0x10;
 536                                 }
 537                                 else if (ent->render.model->flags & EF_ROCKET)
 538                                 {
 539                                         CL_RocketTrail (oldorg, ent->render.origin, 0, ent);
 540                                         dlightcolor[0] += 200.0f;
 541                                         dlightcolor[1] += 160.0f;
 542                                         dlightcolor[2] +=  80.0f;
 543                                 }
 544                                 else if (ent->render.model->flags & EF_GRENADE)
 545                                 {
 546                                         if (ent->render.alpha == -1) // LordHavoc: Nehahra dem compatibility
 547                                                 CL_RocketTrail (oldorg, neworg, 7, ent);
 548                                         else
 549                                                 CL_RocketTrail (oldorg, neworg, 1, ent);
 550                                 }
 551                                 else if (ent->render.model->flags & EF_TRACER3)
 552                                 {
 553                                         CL_RocketTrail (oldorg, neworg, 6, ent);
 554                                         dlightcolor[0] += 0x50;
 555                                         dlightcolor[1] += 0x20;
 556                                         dlightcolor[2] += 0x40;
 557                                 }
 558                         }
 559                 }
 560                 // LordHavoc: customizable glow
 561                 glowsize = ent->state_current.glowsize; // FIXME: interpolate?
 562                 glowcolor = ent->state_current.glowcolor;
 563                 if (glowsize)
 564                 {
 565                         qbyte *tempcolor = (qbyte *)&d_8to24table[glowcolor];
 566                         // * 4 for the expansion from 0-255 to 0-1023 range,
 567                         // / 255 to scale down byte colors
 568                         glowsize *= (4.0f / 255.0f);
 569                         VectorMA(dlightcolor, glowsize, tempcolor, dlightcolor);
 570                 }
 571                 // LordHavoc: customizable trail
 572                 if (ent->render.flags & RENDER_GLOWTRAIL)
 573                         CL_RocketTrail2 (oldorg, neworg, glowcolor, ent);
 574
 575                 if (dlightcolor[0] || dlightcolor[1] || dlightcolor[2])
 576                 {
 577                         vec3_t vec;
 578                         VectorCopy(neworg, vec);
 579                         // hack to make glowing player light shine on their gun
 580                         if (i == cl.viewentity && !chase_active.integer)
 581                                 vec[2] += 30;
 582                         CL_AllocDlight (NULL, vec, 1, dlightcolor[0], dlightcolor[1], dlightcolor[2], 0, 0);
 583                 }
 584
 585                 if (chase_active.integer)
 586                 {
 587                         if (ent->render.flags & RENDER_VIEWMODEL)
 588                                 continue;
 589                 }
 590                 else
 591                 {
 592                         if (i == cl.viewentity || (ent->render.flags & RENDER_EXTERIORMODEL))
 593                                 continue;
 594                 }
 595
 596                 if (ent->render.model == NULL)
 597                         continue;
 598                 if (effects & EF_NODRAW)
 599                         continue;
 600                 if (r_refdef.numentities < MAX_VISEDICTS)
 601                         r_refdef.entities[r_refdef.numentities++] = &ent->render;
 602         }
 603 }
 604
 605 void CL_LerpPlayer(float frac)
 606 {
 607         int i;
 608         float d;
 609
 610         if (cl.entitydatabase.numframes)
 611         {
 612                 cl.viewentorigin[0] = cl.viewentoriginold[0] + frac * (cl.viewentoriginnew[0] - cl.viewentoriginold[0]);
 613                 cl.viewentorigin[1] = cl.viewentoriginold[1] + frac * (cl.viewentoriginnew[1] - cl.viewentoriginold[1]);
 614                 cl.viewentorigin[2] = cl.viewentoriginold[2] + frac * (cl.viewentoriginnew[2] - cl.viewentoriginold[2]);
 615         }
 616         else
 617                 VectorCopy (cl_entities[cl.viewentity].render.origin, cl.viewentorigin);
 618
 619         cl.viewzoom = cl.viewzoomold + frac * (cl.viewzoomnew - cl.viewzoomold);
 620
 621         for (i = 0;i < 3;i++)
 622                 cl.velocity[i] = cl.mvelocity[1][i] + frac * (cl.mvelocity[0][i] - cl.mvelocity[1][i]);
 623
 624         if (cls.demoplayback)
 625         {
 626                 // interpolate the angles
 627                 for (i = 0;i < 3;i++)
 628                 {
 629                         d = cl.mviewangles[0][i] - cl.mviewangles[1][i];
 630                         if (d > 180)
 631                                 d -= 360;
 632                         else if (d < -180)
 633                                 d += 360;
 634                         cl.viewangles[i] = cl.mviewangles[1][i] + frac*d;
 635                 }
 636         }
 637 }
 638
 639 void CL_Effect(vec3_t org, int modelindex, int startframe, int framecount, float framerate)
 640 {
 641         int i;
 642         cl_effect_t *e;
 643         if (!modelindex) // sanity check
 644                 return;
 645         for (i = 0, e = cl_effect;i < MAX_EFFECTS;i++, e++)
 646         {
 647                 if (e->active)
 648                         continue;
 649                 e->active = true;
 650                 VectorCopy(org, e->origin);
 651                 e->modelindex = modelindex;
 652                 e->starttime = cl.time;
 653                 e->startframe = startframe;
 654                 e->endframe = startframe + framecount;
 655                 e->framerate = framerate;
 656
 657                 e->frame = 0;
 658                 e->frame1time = cl.time;
 659                 e->frame2time = cl.time;
 660                 break;
 661         }
 662 }
 663
 664 static void CL_RelinkEffects()
 665 {
 666         int i, intframe;
 667         cl_effect_t *e;
 668         entity_t *vis;
 669         float frame;
 670
 671         for (i = 0, e = cl_effect;i < MAX_EFFECTS;i++, e++)
 672         {
 673                 if (e->active)
 674                 {
 675                         frame = (cl.time - e->starttime) * e->framerate + e->startframe;
 676                         intframe = frame;
 677                         if (intframe < 0 || intframe >= e->endframe)
 678                         {
 679                                 e->active = false;
 680                                 memset(e, 0, sizeof(*e));
 681                                 continue;
 682                         }
 683
 684                         if (intframe != e->frame)
 685                         {
 686                                 e->frame = intframe;
 687                                 e->frame1time = e->frame2time;
 688                                 e->frame2time = cl.time;
 689                         }
 690
 691                         if ((vis = CL_NewTempEntity()))
 692                         {
 693                                 // interpolation stuff
 694                                 vis->render.frame1 = intframe;
 695                                 vis->render.frame2 = intframe + 1;
 696                                 if (vis->render.frame2 >= e->endframe)
 697                                         vis->render.frame2 = -1; // disappear
 698                                 vis->render.framelerp = frame - intframe;
 699                                 vis->render.frame1time = e->frame1time;
 700                                 vis->render.frame2time = e->frame2time;
 701
 702                                 // normal stuff
 703                                 VectorCopy(e->origin, vis->render.origin);
 704                                 vis->render.model = cl.model_precache[e->modelindex];
 705                                 vis->render.frame = vis->render.frame2;
 706                                 vis->render.colormap = -1; // no special coloring
 707                                 vis->render.scale = 1;
 708                                 vis->render.alpha = 1;
 709                         }
 710                 }
 711         }
 712 }
 713
 714 void CL_RelinkEntities (void)
 715 {
 716         float frac;
 717
 718         // fraction from previous network update to current
 719         frac = CL_LerpPoint ();
 720
 721         CL_DecayLights ();
 722         CL_RelinkStaticEntities();
 723         CL_RelinkNetworkEntities();
 724         CL_TraceLine_ScanForBModels();
 725         CL_RelinkEffects();
 726         CL_MoveParticles();
 727         CL_UpdateTEnts();
 728
 729         CL_LerpPlayer(frac);
 730 }
 731
 732
 733 /*
 734 ===============
 735 CL_ReadFromServer
 736
 737 Read all incoming data from the server
 738 ===============
 739 */
 740 int CL_ReadFromServer (void)
 741 {
 742         int ret, netshown;
 743
 744         cl.oldtime = cl.time;
 745         cl.time += cl.frametime;
 746
 747         netshown = false;
 748         do
 749         {
 750                 ret = CL_GetMessage ();
 751                 if (ret == -1)
 752                         Host_Error ("CL_ReadFromServer: lost server connection");
 753                 if (!ret)
 754                         break;
 755
 756                 cl.last_received_message = realtime;
 757
 758                 if (cl_shownet.integer)
 759                         netshown = true;
 760
 761                 CL_ParseServerMessage ();
 762         }
 763         while (ret && cls.state == ca_connected);
 764
 765         if (netshown)
 766                 Con_Printf ("\n");
 767
 768         r_refdef.numentities = 0;
 769         if (cls.state == ca_connected && cl.worldmodel)
 770         {
 771                 CL_RelinkEntities ();
 772
 773                 // run cgame code (which can add more entities)
 774                 CL_CGVM_Frame();
 775         }
 776
 777 //
 778 // bring the links up to date
 779 //
 780         return 0;
 781 }
 782
 783 /*
 784 =================
 785 CL_SendCmd
 786 =================
 787 */
 788 void CL_SendCmd (void)
 789 {
 790         usercmd_t               cmd;
 791
 792         if (cls.state != ca_connected)
 793                 return;
 794
 795         if (cls.signon == SIGNONS)
 796         {
 797         // get basic movement from keyboard
 798                 CL_BaseMove (&cmd);
 799
 800                 IN_PreMove(); // OS independent code
 801
 802         // allow mice or other external controllers to add to the move
 803                 IN_Move (&cmd);
 804
 805                 IN_PostMove(); // OS independent code
 806
 807         // send the unreliable message
 808                 CL_SendMove (&cmd);
 809         }
 810 #ifndef NOROUTINGFIX
 811         else
 812         {
 813                 // LordHavoc: fix for NAT routing of netquake:
 814                 // bounce back a clc_nop message to the newly allocated server port,
 815                 // to establish a routing connection for incoming frames,
 816                 // the server waits for this before sending anything
 817                 if (realtime > cl.sendnoptime)
 818                 {
 819                         Con_DPrintf("sending clc_nop to get server's attention\n");
 820                         cl.sendnoptime = realtime + 3;
 821                         MSG_WriteByte(&cls.message, clc_nop);
 822                 }
 823         }
 824 #endif
 825
 826         if (cls.demoplayback)
 827         {
 828                 SZ_Clear (&cls.message);
 829                 return;
 830         }
 831
 832 // send the reliable message
 833         if (!cls.message.cursize)
 834                 return;         // no message at all
 835
 836         if (!NET_CanSendMessage (cls.netcon))
 837         {
 838                 Con_DPrintf ("CL_WriteToServer: can't send\n");
 839                 return;
 840         }
 841
 842         if (NET_SendMessage (cls.netcon, &cls.message) == -1)
 843                 Host_Error ("CL_WriteToServer: lost server connection");
 844
 845         SZ_Clear (&cls.message);
 846 }
 847
 848 // LordHavoc: pausedemo command
 849 static void CL_PauseDemo_f (void)
 850 {
 851         cls.demopaused = !cls.demopaused;
 852         if (cls.demopaused)
 853                 Con_Printf("Demo paused\n");
 854         else
 855                 Con_Printf("Demo unpaused\n");
 856 }
 857
 858 /*
 859 ======================
 860 CL_PModel_f
 861 LordHavoc: Intended for Nehahra, I personally think this is dumb, but Mindcrime won't listen.
 862 ======================
 863 */
 864 static void CL_PModel_f (void)
 865 {
 866         int i;
 867         eval_t *val;
 868
 869         if (Cmd_Argc () == 1)
 870         {
 871                 Con_Printf ("\"pmodel\" is \"%s\"\n", cl_pmodel.string);
 872                 return;
 873         }
 874         i = atoi(Cmd_Argv(1));
 875
 876         if (cmd_source == src_command)
 877         {
 878                 if (cl_pmodel.integer == i)
 879                         return;
 880                 Cvar_SetValue ("_cl_pmodel", i);
 881                 if (cls.state == ca_connected)
 882                         Cmd_ForwardToServer ();
 883                 return;
 884         }
 885
 886         host_client->pmodel = i;
 887         if ((val = GETEDICTFIELDVALUE(host_client->edict, eval_pmodel)))
 888                 val->_float = i;
 889 }
 890
 891 /*
 892 ======================
 893 CL_Fog_f
 894 ======================
 895 */
 896 static void CL_Fog_f (void)
 897 {
 898         if (Cmd_Argc () == 1)
 899         {
 900                 Con_Printf ("\"fog\" is \"%f %f %f %f\"\n", fog_density, fog_red, fog_green, fog_blue);
 901                 return;
 902         }
 903         fog_density = atof(Cmd_Argv(1));
 904         fog_red = atof(Cmd_Argv(2));
 905         fog_green = atof(Cmd_Argv(3));
 906         fog_blue = atof(Cmd_Argv(4));
 907 }
 908
 909 /*
 910 =================
 911 CL_Init
 912 =================
 913 */
 914 void CL_Init (void)
 915 {
 916         cl_scores_mempool = Mem_AllocPool("client player info");
 917
 918         cl_refdef_mempool = Mem_AllocPool("refdef");
 919         memset(&r_refdef, 0, sizeof(r_refdef));
 920         r_refdef.entities = Mem_Alloc(cl_refdef_mempool, sizeof(entity_render_t *) * MAX_VISEDICTS);
 921
 922         SZ_Alloc (&cls.message, 1024, "cls.message");
 923
 924         CL_InitInput ();
 925         CL_InitTEnts ();
 926
 927 //
 928 // register our commands
 929 //
 930         Cvar_RegisterVariable (&cl_name);
 931         Cvar_RegisterVariable (&cl_color);
 932         if (gamemode == GAME_NEHAHRA)
 933                 Cvar_RegisterVariable (&cl_pmodel);
 934         Cvar_RegisterVariable (&cl_upspeed);
 935         Cvar_RegisterVariable (&cl_forwardspeed);
 936         Cvar_RegisterVariable (&cl_backspeed);
 937         Cvar_RegisterVariable (&cl_sidespeed);
 938         Cvar_RegisterVariable (&cl_movespeedkey);
 939         Cvar_RegisterVariable (&cl_yawspeed);
 940         Cvar_RegisterVariable (&cl_pitchspeed);
 941         Cvar_RegisterVariable (&cl_anglespeedkey);
 942         Cvar_RegisterVariable (&cl_shownet);
 943         Cvar_RegisterVariable (&cl_nolerp);
 944         Cvar_RegisterVariable (&lookspring);
 945         Cvar_RegisterVariable (&lookstrafe);
 946         Cvar_RegisterVariable (&sensitivity);
 947         Cvar_RegisterVariable (&freelook);
 948
 949         Cvar_RegisterVariable (&m_pitch);
 950         Cvar_RegisterVariable (&m_yaw);
 951         Cvar_RegisterVariable (&m_forward);
 952         Cvar_RegisterVariable (&m_side);
 953
 954         Cvar_RegisterVariable (&cl_itembobspeed);
 955         Cvar_RegisterVariable (&cl_itembobheight);
 956
 957         Cmd_AddCommand ("entities", CL_PrintEntities_f);
 958         Cmd_AddCommand ("bitprofile", CL_BitProfile_f);
 959         Cmd_AddCommand ("disconnect", CL_Disconnect_f);
 960         Cmd_AddCommand ("record", CL_Record_f);
 961         Cmd_AddCommand ("stop", CL_Stop_f);
 962         Cmd_AddCommand ("playdemo", CL_PlayDemo_f);
 963         Cmd_AddCommand ("timedemo", CL_TimeDemo_f);
 964
 965         Cmd_AddCommand ("fog", CL_Fog_f);
 966
 967         // LordHavoc: added pausedemo
 968         Cmd_AddCommand ("pausedemo", CL_PauseDemo_f);
 969         if (gamemode == GAME_NEHAHRA)
 970                 Cmd_AddCommand ("pmodel", CL_PModel_f);
 971
 972         Cvar_RegisterVariable(&cl_draweffects);
 973
 974         CL_Parse_Init();
 975         CL_Particles_Init();
 976         CL_Screen_Init();
 977         CL_CGVM_Init();
 978 }
 979