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                                         CL_RocketTrail (oldorg, neworg, 3, ent);
 525                                 else if (ent->render.model->flags & EF_TRACER2)
 526                                         CL_RocketTrail (oldorg, neworg, 5, ent);
 527                                 else if (ent->render.model->flags & EF_ROCKET)
 528                                 {
 529                                         CL_RocketTrail (oldorg, ent->render.origin, 0, ent);
 530                                         dlightcolor[0] += 200.0f;
 531                                         dlightcolor[1] += 160.0f;
 532                                         dlightcolor[2] +=  80.0f;
 533                                 }
 534                                 else if (ent->render.model->flags & EF_GRENADE)
 535                                 {
 536                                         if (ent->render.alpha == -1) // LordHavoc: Nehahra dem compatibility
 537                                                 CL_RocketTrail (oldorg, neworg, 7, ent);
 538                                         else
 539                                                 CL_RocketTrail (oldorg, neworg, 1, ent);
 540                                 }
 541                                 else if (ent->render.model->flags & EF_TRACER3)
 542                                         CL_RocketTrail (oldorg, neworg, 6, ent);
 543                         }
 544                 }
 545                 // LordHavoc: customizable glow
 546                 glowsize = ent->state_current.glowsize; // FIXME: interpolate?
 547                 glowcolor = ent->state_current.glowcolor;
 548                 if (glowsize)
 549                 {
 550                         qbyte *tempcolor = (qbyte *)&d_8to24table[glowcolor];
 551                         // * 4 for the expansion from 0-255 to 0-1023 range,
 552                         // / 255 to scale down byte colors
 553                         glowsize *= (4.0f / 255.0f);
 554                         VectorMA(dlightcolor, glowsize, tempcolor, dlightcolor);
 555                 }
 556                 // LordHavoc: customizable trail
 557                 if (ent->render.flags & RENDER_GLOWTRAIL)
 558                         CL_RocketTrail2 (oldorg, neworg, glowcolor, ent);
 559
 560                 if (dlightcolor[0] || dlightcolor[1] || dlightcolor[2])
 561                 {
 562                         vec3_t vec;
 563                         VectorCopy(neworg, vec);
 564                         // hack to make glowing player light shine on their gun
 565                         if (i == cl.viewentity && !chase_active.integer)
 566                                 vec[2] += 30;
 567                         CL_AllocDlight (NULL, vec, 1, dlightcolor[0], dlightcolor[1], dlightcolor[2], 0, 0);
 568                 }
 569
 570                 if (chase_active.integer)
 571                 {
 572                         if (ent->render.flags & RENDER_VIEWMODEL)
 573                                 continue;
 574                 }
 575                 else
 576                 {
 577                         if (i == cl.viewentity || (ent->render.flags & RENDER_EXTERIORMODEL))
 578                                 continue;
 579                 }
 580
 581                 if (ent->render.model == NULL)
 582                         continue;
 583                 if (effects & EF_NODRAW)
 584                         continue;
 585                 if (r_refdef.numentities < MAX_VISEDICTS)
 586                         r_refdef.entities[r_refdef.numentities++] = &ent->render;
 587         }
 588 }
 589
 590 void CL_LerpPlayer(float frac)
 591 {
 592         int i;
 593         float d;
 594
 595         if (cl.entitydatabase.numframes)
 596         {
 597                 cl.viewentorigin[0] = cl.viewentoriginold[0] + frac * (cl.viewentoriginnew[0] - cl.viewentoriginold[0]);
 598                 cl.viewentorigin[1] = cl.viewentoriginold[1] + frac * (cl.viewentoriginnew[1] - cl.viewentoriginold[1]);
 599                 cl.viewentorigin[2] = cl.viewentoriginold[2] + frac * (cl.viewentoriginnew[2] - cl.viewentoriginold[2]);
 600         }
 601         else
 602                 VectorCopy (cl_entities[cl.viewentity].render.origin, cl.viewentorigin);
 603
 604         cl.viewzoom = cl.viewzoomold + frac * (cl.viewzoomnew - cl.viewzoomold);
 605
 606         for (i = 0;i < 3;i++)
 607                 cl.velocity[i] = cl.mvelocity[1][i] + frac * (cl.mvelocity[0][i] - cl.mvelocity[1][i]);
 608
 609         if (cls.demoplayback)
 610         {
 611                 // interpolate the angles
 612                 for (i = 0;i < 3;i++)
 613                 {
 614                         d = cl.mviewangles[0][i] - cl.mviewangles[1][i];
 615                         if (d > 180)
 616                                 d -= 360;
 617                         else if (d < -180)
 618                                 d += 360;
 619                         cl.viewangles[i] = cl.mviewangles[1][i] + frac*d;
 620                 }
 621         }
 622 }
 623
 624 void CL_Effect(vec3_t org, int modelindex, int startframe, int framecount, float framerate)
 625 {
 626         int i;
 627         cl_effect_t *e;
 628         if (!modelindex) // sanity check
 629                 return;
 630         for (i = 0, e = cl_effect;i < MAX_EFFECTS;i++, e++)
 631         {
 632                 if (e->active)
 633                         continue;
 634                 e->active = true;
 635                 VectorCopy(org, e->origin);
 636                 e->modelindex = modelindex;
 637                 e->starttime = cl.time;
 638                 e->startframe = startframe;
 639                 e->endframe = startframe + framecount;
 640                 e->framerate = framerate;
 641
 642                 e->frame = 0;
 643                 e->frame1time = cl.time;
 644                 e->frame2time = cl.time;
 645                 break;
 646         }
 647 }
 648
 649 static void CL_RelinkEffects()
 650 {
 651         int i, intframe;
 652         cl_effect_t *e;
 653         entity_t *vis;
 654         float frame;
 655
 656         for (i = 0, e = cl_effect;i < MAX_EFFECTS;i++, e++)
 657         {
 658                 if (e->active)
 659                 {
 660                         frame = (cl.time - e->starttime) * e->framerate + e->startframe;
 661                         intframe = frame;
 662                         if (intframe < 0 || intframe >= e->endframe)
 663                         {
 664                                 e->active = false;
 665                                 memset(e, 0, sizeof(*e));
 666                                 continue;
 667                         }
 668
 669                         if (intframe != e->frame)
 670                         {
 671                                 e->frame = intframe;
 672                                 e->frame1time = e->frame2time;
 673                                 e->frame2time = cl.time;
 674                         }
 675
 676                         if ((vis = CL_NewTempEntity()))
 677                         {
 678                                 // interpolation stuff
 679                                 vis->render.frame1 = intframe;
 680                                 vis->render.frame2 = intframe + 1;
 681                                 if (vis->render.frame2 >= e->endframe)
 682                                         vis->render.frame2 = -1; // disappear
 683                                 vis->render.framelerp = frame - intframe;
 684                                 vis->render.frame1time = e->frame1time;
 685                                 vis->render.frame2time = e->frame2time;
 686
 687                                 // normal stuff
 688                                 VectorCopy(e->origin, vis->render.origin);
 689                                 vis->render.model = cl.model_precache[e->modelindex];
 690                                 vis->render.frame = vis->render.frame2;
 691                                 vis->render.colormap = -1; // no special coloring
 692                                 vis->render.scale = 1;
 693                                 vis->render.alpha = 1;
 694                         }
 695                 }
 696         }
 697 }
 698
 699 void CL_RelinkEntities (void)
 700 {
 701         float frac;
 702
 703         // fraction from previous network update to current
 704         frac = CL_LerpPoint ();
 705
 706         CL_DecayLights ();
 707         CL_RelinkStaticEntities();
 708         CL_RelinkNetworkEntities();
 709         CL_TraceLine_ScanForBModels();
 710         CL_RelinkEffects();
 711         CL_MoveParticles();
 712         CL_UpdateTEnts();
 713
 714         CL_LerpPlayer(frac);
 715 }
 716
 717
 718 /*
 719 ===============
 720 CL_ReadFromServer
 721
 722 Read all incoming data from the server
 723 ===============
 724 */
 725 int CL_ReadFromServer (void)
 726 {
 727         int ret, netshown;
 728
 729         cl.oldtime = cl.time;
 730         cl.time += cl.frametime;
 731
 732         netshown = false;
 733         do
 734         {
 735                 ret = CL_GetMessage ();
 736                 if (ret == -1)
 737                         Host_Error ("CL_ReadFromServer: lost server connection");
 738                 if (!ret)
 739                         break;
 740
 741                 cl.last_received_message = realtime;
 742
 743                 if (cl_shownet.integer)
 744                         netshown = true;
 745
 746                 CL_ParseServerMessage ();
 747         }
 748         while (ret && cls.state == ca_connected);
 749
 750         if (netshown)
 751                 Con_Printf ("\n");
 752
 753         r_refdef.numentities = 0;
 754         if (cls.state == ca_connected && cl.worldmodel)
 755         {
 756                 CL_RelinkEntities ();
 757
 758                 // run cgame code (which can add more entities)
 759                 CL_CGVM_Frame();
 760         }
 761
 762 //
 763 // bring the links up to date
 764 //
 765         return 0;
 766 }
 767
 768 /*
 769 =================
 770 CL_SendCmd
 771 =================
 772 */
 773 void CL_SendCmd (void)
 774 {
 775         usercmd_t               cmd;
 776
 777         if (cls.state != ca_connected)
 778                 return;
 779
 780         if (cls.signon == SIGNONS)
 781         {
 782         // get basic movement from keyboard
 783                 CL_BaseMove (&cmd);
 784
 785                 IN_PreMove(); // OS independent code
 786
 787         // allow mice or other external controllers to add to the move
 788                 IN_Move (&cmd);
 789
 790                 IN_PostMove(); // OS independent code
 791
 792         // send the unreliable message
 793                 CL_SendMove (&cmd);
 794         }
 795 #ifndef NOROUTINGFIX
 796         else
 797         {
 798                 // LordHavoc: fix for NAT routing of netquake:
 799                 // bounce back a clc_nop message to the newly allocated server port,
 800                 // to establish a routing connection for incoming frames,
 801                 // the server waits for this before sending anything
 802                 if (realtime > cl.sendnoptime)
 803                 {
 804                         Con_DPrintf("sending clc_nop to get server's attention\n");
 805                         cl.sendnoptime = realtime + 3;
 806                         MSG_WriteByte(&cls.message, clc_nop);
 807                 }
 808         }
 809 #endif
 810
 811         if (cls.demoplayback)
 812         {
 813                 SZ_Clear (&cls.message);
 814                 return;
 815         }
 816
 817 // send the reliable message
 818         if (!cls.message.cursize)
 819                 return;         // no message at all
 820
 821         if (!NET_CanSendMessage (cls.netcon))
 822         {
 823                 Con_DPrintf ("CL_WriteToServer: can't send\n");
 824                 return;
 825         }
 826
 827         if (NET_SendMessage (cls.netcon, &cls.message) == -1)
 828                 Host_Error ("CL_WriteToServer: lost server connection");
 829
 830         SZ_Clear (&cls.message);
 831 }
 832
 833 // LordHavoc: pausedemo command
 834 static void CL_PauseDemo_f (void)
 835 {
 836         cls.demopaused = !cls.demopaused;
 837         if (cls.demopaused)
 838                 Con_Printf("Demo paused\n");
 839         else
 840                 Con_Printf("Demo unpaused\n");
 841 }
 842
 843 /*
 844 ======================
 845 CL_PModel_f
 846 LordHavoc: Intended for Nehahra, I personally think this is dumb, but Mindcrime won't listen.
 847 ======================
 848 */
 849 static void CL_PModel_f (void)
 850 {
 851         int i;
 852         eval_t *val;
 853
 854         if (Cmd_Argc () == 1)
 855         {
 856                 Con_Printf ("\"pmodel\" is \"%s\"\n", cl_pmodel.string);
 857                 return;
 858         }
 859         i = atoi(Cmd_Argv(1));
 860
 861         if (cmd_source == src_command)
 862         {
 863                 if (cl_pmodel.integer == i)
 864                         return;
 865                 Cvar_SetValue ("_cl_pmodel", i);
 866                 if (cls.state == ca_connected)
 867                         Cmd_ForwardToServer ();
 868                 return;
 869         }
 870
 871         host_client->pmodel = i;
 872         if ((val = GETEDICTFIELDVALUE(host_client->edict, eval_pmodel)))
 873                 val->_float = i;
 874 }
 875
 876 /*
 877 ======================
 878 CL_Fog_f
 879 ======================
 880 */
 881 static void CL_Fog_f (void)
 882 {
 883         if (Cmd_Argc () == 1)
 884         {
 885                 Con_Printf ("\"fog\" is \"%f %f %f %f\"\n", fog_density, fog_red, fog_green, fog_blue);
 886                 return;
 887         }
 888         fog_density = atof(Cmd_Argv(1));
 889         fog_red = atof(Cmd_Argv(2));
 890         fog_green = atof(Cmd_Argv(3));
 891         fog_blue = atof(Cmd_Argv(4));
 892 }
 893
 894 /*
 895 =================
 896 CL_Init
 897 =================
 898 */
 899 void CL_Init (void)
 900 {
 901         cl_scores_mempool = Mem_AllocPool("client player info");
 902
 903         cl_refdef_mempool = Mem_AllocPool("refdef");
 904         memset(&r_refdef, 0, sizeof(r_refdef));
 905         r_refdef.entities = Mem_Alloc(cl_refdef_mempool, sizeof(entity_render_t *) * MAX_VISEDICTS);
 906
 907         SZ_Alloc (&cls.message, 1024, "cls.message");
 908
 909         CL_InitInput ();
 910         CL_InitTEnts ();
 911
 912 //
 913 // register our commands
 914 //
 915         Cvar_RegisterVariable (&cl_name);
 916         Cvar_RegisterVariable (&cl_color);
 917         if (gamemode == GAME_NEHAHRA)
 918                 Cvar_RegisterVariable (&cl_pmodel);
 919         Cvar_RegisterVariable (&cl_upspeed);
 920         Cvar_RegisterVariable (&cl_forwardspeed);
 921         Cvar_RegisterVariable (&cl_backspeed);
 922         Cvar_RegisterVariable (&cl_sidespeed);
 923         Cvar_RegisterVariable (&cl_movespeedkey);
 924         Cvar_RegisterVariable (&cl_yawspeed);
 925         Cvar_RegisterVariable (&cl_pitchspeed);
 926         Cvar_RegisterVariable (&cl_anglespeedkey);
 927         Cvar_RegisterVariable (&cl_shownet);
 928         Cvar_RegisterVariable (&cl_nolerp);
 929         Cvar_RegisterVariable (&lookspring);
 930         Cvar_RegisterVariable (&lookstrafe);
 931         Cvar_RegisterVariable (&sensitivity);
 932         Cvar_RegisterVariable (&freelook);
 933
 934         Cvar_RegisterVariable (&m_pitch);
 935         Cvar_RegisterVariable (&m_yaw);
 936         Cvar_RegisterVariable (&m_forward);
 937         Cvar_RegisterVariable (&m_side);
 938
 939         Cvar_RegisterVariable (&cl_itembobspeed);
 940         Cvar_RegisterVariable (&cl_itembobheight);
 941
 942         Cmd_AddCommand ("entities", CL_PrintEntities_f);
 943         Cmd_AddCommand ("bitprofile", CL_BitProfile_f);
 944         Cmd_AddCommand ("disconnect", CL_Disconnect_f);
 945         Cmd_AddCommand ("record", CL_Record_f);
 946         Cmd_AddCommand ("stop", CL_Stop_f);
 947         Cmd_AddCommand ("playdemo", CL_PlayDemo_f);
 948         Cmd_AddCommand ("timedemo", CL_TimeDemo_f);
 949
 950         Cmd_AddCommand ("fog", CL_Fog_f);
 951
 952         // LordHavoc: added pausedemo
 953         Cmd_AddCommand ("pausedemo", CL_PauseDemo_f);
 954         if (gamemode == GAME_NEHAHRA)
 955                 Cmd_AddCommand ("pmodel", CL_PModel_f);
 956
 957         Cvar_RegisterVariable(&cl_draweffects);
 958
 959         CL_Parse_Init();
 960         CL_Particles_Init();
 961         CL_Screen_Init();
 962         CL_CGVM_Init();
 963 }
 964