8eab4358519d12b85eb7367e88169c7e76a93232
[xonotic/darkplaces.git] / 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
24 // we need to declare some mouse variables here, because the menu system
25 // references them even when on a unix system.
26
27 // these two are not intended to be set directly
28 cvar_t cl_name = {CVAR_SAVE, "_cl_name", "player"};
29 cvar_t cl_color = {CVAR_SAVE, "_cl_color", "0"};
30 cvar_t cl_pmodel = {CVAR_SAVE, "_cl_pmodel", "0"};
31
32 cvar_t cl_shownet = {0, "cl_shownet","0"};
33 cvar_t cl_nolerp = {0, "cl_nolerp", "0"};
34
35 cvar_t cl_itembobheight = {0, "cl_itembobheight", "8"};
36 cvar_t cl_itembobspeed = {0, "cl_itembobspeed", "0.5"};
37
38 cvar_t lookspring = {CVAR_SAVE, "lookspring","0"};
39 cvar_t lookstrafe = {CVAR_SAVE, "lookstrafe","0"};
40 cvar_t sensitivity = {CVAR_SAVE, "sensitivity","3", 1, 30};
41
42 cvar_t m_pitch = {CVAR_SAVE, "m_pitch","0.022"};
43 cvar_t m_yaw = {CVAR_SAVE, "m_yaw","0.022"};
44 cvar_t m_forward = {CVAR_SAVE, "m_forward","1"};
45 cvar_t m_side = {CVAR_SAVE, "m_side","0.8"};
46
47 cvar_t freelook = {CVAR_SAVE, "freelook", "1"};
48
49 cvar_t cl_draweffects = {0, "cl_draweffects", "1"};
50
51 mempool_t *cl_scores_mempool;
52 mempool_t *cl_refdef_mempool;
53
54 client_static_t cls;
55 client_state_t  cl;
56 // FIXME: put these on hunk?
57 entity_t                cl_entities[MAX_EDICTS];
58 entity_t                cl_static_entities[MAX_STATIC_ENTITIES];
59 lightstyle_t    cl_lightstyle[MAX_LIGHTSTYLES];
60
61 typedef struct effect_s
62 {
63         int active;
64         vec3_t origin;
65         float starttime;
66         float framerate;
67         int modelindex;
68         int startframe;
69         int endframe;
70         // these are for interpolation
71         int frame;
72         double frame1time;
73         double frame2time;
74 }
75 cl_effect_t;
76
77 #define MAX_EFFECTS 256
78
79 static cl_effect_t cl_effect[MAX_EFFECTS];
80
81
82 /*
83 =====================
84 CL_ClearState
85
86 =====================
87 */
88 void CL_ClearState (void)
89 {
90         int                     i;
91
92         if (!sv.active)
93                 Host_ClearMemory ();
94
95         Mem_EmptyPool(cl_scores_mempool);
96
97 // wipe the entire cl structure
98         memset (&cl, 0, sizeof(cl));
99
100         SZ_Clear (&cls.message);
101
102 // clear other arrays
103         memset(cl_entities, 0, sizeof(cl_entities));
104         memset(cl_lightstyle, 0, sizeof(cl_lightstyle));
105         memset(cl_temp_entities, 0, sizeof(cl_temp_entities));
106         memset(cl_beams, 0, sizeof(cl_beams));
107         memset(cl_dlights, 0, sizeof(cl_dlights));
108         memset(cl_effect, 0, sizeof(cl_effect));
109         CL_Screen_NewMap();
110         CL_Particles_Clear();
111         // LordHavoc: have to set up the baseline info for alpha and other stuff
112         for (i = 0;i < MAX_EDICTS;i++)
113         {
114                 ClearStateToDefault(&cl_entities[i].state_baseline);
115                 ClearStateToDefault(&cl_entities[i].state_previous);
116                 ClearStateToDefault(&cl_entities[i].state_current);
117         }
118
119         CL_CGVM_Clear();
120 }
121
122 void CL_LerpUpdate(entity_t *e)
123 {
124         entity_persistent_t *p;
125         entity_render_t *r;
126         p = &e->persistent;
127         r = &e->render;
128
129         if (p->modelindex != e->state_current.modelindex)
130         {
131                 // reset all interpolation information
132                 p->modelindex = e->state_current.modelindex;
133                 p->frame1 = p->frame2 = e->state_current.frame;
134                 p->frame1time = p->frame2time = cl.time;
135                 p->framelerp = 1;
136         }
137         else if (p->frame2 != e->state_current.frame)
138         {
139                 // transition to new frame
140                 p->frame1 = p->frame2;
141                 p->frame1time = p->frame2time;
142                 p->frame2 = e->state_current.frame;
143                 p->frame2time = cl.time;
144                 p->framelerp = 0;
145         }
146         else
147         {
148                 // update transition
149                 p->framelerp = (cl.time - p->frame2time) * 10;
150                 p->framelerp = bound(0, p->framelerp, 1);
151         }
152
153         r->model = cl.model_precache[e->state_current.modelindex];
154         Mod_CheckLoaded(r->model);
155         r->frame = e->state_current.frame;
156         r->frame1 = p->frame1;
157         r->frame2 = p->frame2;
158         r->framelerp = p->framelerp;
159         r->frame1time = p->frame1time;
160         r->frame2time = p->frame2time;
161 }
162
163 /*
164 =====================
165 CL_Disconnect
166
167 Sends a disconnect message to the server
168 This is also called on Host_Error, so it shouldn't cause any errors
169 =====================
170 */
171 void CL_Disconnect (void)
172 {
173         if (cls.state == ca_dedicated)
174                 return;
175
176 // stop sounds (especially looping!)
177         S_StopAllSounds (true);
178
179         // clear contents blends
180         cl.cshifts[0].percent = 0;
181         cl.cshifts[1].percent = 0;
182         cl.cshifts[2].percent = 0;
183         cl.cshifts[3].percent = 0;
184
185         cl.worldmodel = NULL;
186
187         if (cls.demoplayback)
188                 CL_StopPlayback ();
189         else if (cls.state == ca_connected)
190         {
191                 if (cls.demorecording)
192                         CL_Stop_f ();
193
194                 Con_DPrintf ("Sending clc_disconnect\n");
195                 SZ_Clear (&cls.message);
196                 MSG_WriteByte (&cls.message, clc_disconnect);
197                 NET_SendUnreliableMessage (cls.netcon, &cls.message);
198                 SZ_Clear (&cls.message);
199                 NET_Close (cls.netcon);
200                 // if running a local server, shut it down
201                 if (sv.active)
202                         Host_ShutdownServer(false);
203         }
204         cls.state = ca_disconnected;
205
206         cls.demoplayback = cls.timedemo = false;
207         cls.signon = 0;
208 }
209
210 void CL_Disconnect_f (void)
211 {
212         CL_Disconnect ();
213         if (sv.active)
214                 Host_ShutdownServer (false);
215 }
216
217
218
219
220 /*
221 =====================
222 CL_EstablishConnection
223
224 Host should be either "local" or a net address to be passed on
225 =====================
226 */
227 void CL_EstablishConnection (char *host)
228 {
229         if (cls.state == ca_dedicated)
230                 return;
231
232         if (cls.demoplayback)
233                 return;
234
235         CL_Disconnect ();
236
237         cls.netcon = NET_Connect (host);
238         if (!cls.netcon)
239                 Host_Error ("CL_Connect: connect failed\n");
240         Con_DPrintf ("CL_EstablishConnection: connected to %s\n", host);
241
242         cls.demonum = -1;                       // not in the demo loop now
243         cls.state = ca_connected;
244         cls.signon = 0;                         // need all the signon messages before playing
245 }
246
247 /*
248 ==============
249 CL_PrintEntities_f
250 ==============
251 */
252 static void CL_PrintEntities_f (void)
253 {
254         entity_t        *ent;
255         int                     i, j;
256         char            name[32];
257
258         for (i = 0, ent = cl_entities;i < MAX_EDICTS /*cl.num_entities*/;i++, ent++)
259         {
260                 if (!ent->state_current.active)
261                         continue;
262                 if (!ent->render.model)
263                         continue;
264
265                 Con_Printf ("%3i:", i);
266                 if (!ent->render.model)
267                 {
268                         Con_Printf ("EMPTY\n");
269                         continue;
270                 }
271                 strncpy(name, ent->render.model->name, 25);
272                 name[25] = 0;
273                 for (j = strlen(name);j < 25;j++)
274                         name[j] = ' ';
275                 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);
276         }
277 }
278
279
280 /*
281 ===============
282 CL_LerpPoint
283
284 Determines the fraction between the last two messages that the objects
285 should be put at.
286 ===============
287 */
288 static float CL_LerpPoint (void)
289 {
290         float   f;
291
292         // dropped packet, or start of demo
293         if (cl.mtime[1] < cl.mtime[0] - 0.1)
294                 cl.mtime[1] = cl.mtime[0] - 0.1;
295
296         cl.time = bound(cl.mtime[1], cl.time, cl.mtime[0]);
297
298         // LordHavoc: lerp in listen games as the server is being capped below the client (usually)
299         f = cl.mtime[0] - cl.mtime[1];
300         if (!f || cl_nolerp.integer || cls.timedemo || (sv.active && svs.maxclients == 1))
301         {
302                 cl.time = cl.mtime[0];
303                 return 1;
304         }
305
306         f = (cl.time - cl.mtime[1]) / f;
307         return bound(0, f, 1);
308 }
309
310 static void CL_RelinkStaticEntities(void)
311 {
312         int i;
313         for (i = 0;i < cl.num_statics && r_refdef.numentities < MAX_VISEDICTS;i++)
314         {
315                 Mod_CheckLoaded(cl_static_entities[i].render.model);
316                 r_refdef.entities[r_refdef.numentities++] = &cl_static_entities[i].render;
317         }
318 }
319
320 /*
321 ===============
322 CL_RelinkEntities
323 ===============
324 */
325 static void CL_RelinkNetworkEntities()
326 {
327         entity_t        *ent;
328         int                     i, glowcolor, effects;
329         float           f, d, bobjrotate, bobjoffset, dlightradius, glowsize, lerp;
330         vec3_t          oldorg, neworg, delta, dlightcolor;
331
332         bobjrotate = ANGLEMOD(100*cl.time);
333         if (cl_itembobheight.value)
334                 bobjoffset = (cos(cl.time * cl_itembobspeed.value * (2.0 * M_PI)) + 1.0) * 0.5 * cl_itembobheight.value;
335         else
336                 bobjoffset = 0;
337
338 // start on the entity after the world
339         for (i = 1, ent = cl_entities + 1;i < MAX_EDICTS /*cl.num_entities*/;i++, ent++)
340         {
341                 // if the object wasn't included in the latest packet, remove it
342                 if (!ent->state_current.active)
343                         continue;
344
345                 VectorCopy(ent->persistent.trail_origin, oldorg);
346
347                 if (!ent->state_previous.active)
348                 {
349                         // only one state available
350                         lerp = 1;
351                         VectorCopy (ent->state_current.origin, oldorg); // skip trails
352                         VectorCopy (ent->state_current.origin, neworg);
353                         VectorCopy (ent->state_current.angles, ent->render.angles);
354
355                         /*
356                         // monster interpolation
357                         ent->persistent.steplerptime = 0;
358                         VectorCopy(ent->state_current.origin, ent->persistent.stepoldorigin);
359                         VectorCopy(ent->state_current.angles, ent->persistent.stepoldangles);
360                         VectorCopy(ent->state_current.origin, ent->persistent.steporigin);
361                         VectorCopy(ent->state_current.angles, ent->persistent.stepangles);
362                         */
363                 }
364                 /*
365                 else if ((ent->state_current.flags & ent->state_previous.flags) & ENTFLAG_STEP)
366                 {
367                         if (ent->state_current.origin[0] != ent->persistent.steporigin[0]
368                          || ent->state_current.origin[1] != ent->persistent.steporigin[1]
369                          || ent->state_current.origin[2] != ent->persistent.steporigin[2]
370                          || ent->state_current.angles[0] != ent->persistent.stepangles[0]
371                          || ent->state_current.angles[1] != ent->persistent.stepangles[1]
372                          || ent->state_current.angles[2] != ent->persistent.stepangles[2])
373                         {
374                                 // update lerp positions
375                                 ent->clientpersistent.steplerptime = sv.time;
376                                 VectorCopy(ent->steporigin, ent->stepoldorigin);
377                                 VectorCopy(ent->stepangles, ent->stepoldangles);
378                                 VectorCopy(ent->v.origin, ent->steporigin);
379                                 VectorCopy(ent->v.angles, ent->stepangles);
380                         }
381                         lerp = (cl.time - ent->persistent.steplerptime) * 10.0;
382                         if (lerp < 1)
383                         {
384                                 // origin
385                                 VectorSubtract(ent->persistent.steporigin, ent->persistent.stepoldorigin, delta);
386                                 VectorMA(ent->persistent.stepoldorigin, lerp, delta, neworg);
387
388                                 // angles
389                                 VectorSubtract(ent->persistent.stepangles, ent->persistent.stepoldangles, delta);
390                                 // choose shortest rotate (to avoid 'spin around' situations)
391                                 if (delta[0] < -180) delta[0] += 360;else if (delta[0] >= 180) delta[0] -= 360;
392                                 if (delta[1] < -180) delta[1] += 360;else if (delta[1] >= 180) delta[1] -= 360;
393                                 if (delta[2] < -180) delta[2] += 360;else if (delta[2] >= 180) delta[2] -= 360;
394                                 VectorMA(ent->stepoldangles, lerp, delta, ent->render.angles);
395                         }
396                         else
397                         {
398                                 VectorCopy(ent->persistent.steporigin, neworg);
399                                 VectorCopy(ent->persistent.stepangles, ent->render.angles);
400                         }
401                 }
402                 */
403                 else
404                 {
405                         /*
406                         // monster interpolation
407                         ent->persistent.steplerptime = 0;
408                         VectorCopy(ent->state_current.origin, ent->persistent.stepoldorigin);
409                         VectorCopy(ent->state_current.angles, ent->persistent.stepoldangles);
410                         VectorCopy(ent->state_current.origin, ent->persistent.steporigin);
411                         VectorCopy(ent->state_current.angles, ent->persistent.stepangles);
412                         */
413
414                         // if the delta is large, assume a teleport and don't lerp
415                         VectorSubtract(ent->state_current.origin, ent->state_previous.origin, delta);
416                         // LordHavoc: increased tolerance from 100 to 200, and now to 1000
417                         if ((sv.active && svs.maxclients == 1 && !(ent->state_current.flags & RENDER_STEP)) || cls.timedemo || DotProduct(delta, delta) > 1000*1000 || cl_nolerp.integer)
418                                 lerp = 1;
419                         else
420                         {
421                                 f = ent->state_current.time - ent->state_previous.time;
422                                 if (f > 0)
423                                         lerp = (cl.time - ent->state_previous.time) / f;
424                                 else
425                                         lerp = 1;
426                         }
427                         if (lerp >= 1)
428                         {
429                                 // no interpolation
430                                 VectorCopy (ent->state_current.origin, neworg);
431                                 VectorCopy (ent->state_current.angles, ent->render.angles);
432                         }
433                         else
434                         {
435                                 // interpolate the origin and angles
436                                 VectorMA(ent->state_previous.origin, lerp, delta, neworg);
437                                 VectorSubtract(ent->state_current.angles, ent->state_previous.angles, delta);
438                                 if (delta[0] < -180) delta[0] += 360;else if (delta[0] >= 180) delta[0] -= 360;
439                                 if (delta[1] < -180) delta[1] += 360;else if (delta[1] >= 180) delta[1] -= 360;
440                                 if (delta[2] < -180) delta[2] += 360;else if (delta[2] >= 180) delta[2] -= 360;
441                                 VectorMA(ent->state_previous.angles, lerp, delta, ent->render.angles);
442                         }
443                 }
444
445                 VectorCopy (neworg, ent->persistent.trail_origin);
446                 // persistent.modelindex will be updated by CL_LerpUpdate
447                 if (ent->state_current.modelindex != ent->persistent.modelindex)
448                         VectorCopy(neworg, oldorg);
449
450                 VectorCopy (neworg, ent->render.origin);
451                 ent->render.flags = ent->state_current.flags;
452                 ent->render.effects = effects = ent->state_current.effects;
453                 if (cl.scores == NULL || !ent->state_current.colormap)
454                         ent->render.colormap = -1; // no special coloring
455                 else
456                         ent->render.colormap = cl.scores[ent->state_current.colormap - 1].colors; // color it
457                 ent->render.skinnum = ent->state_current.skin;
458                 ent->render.alpha = ent->state_current.alpha * (1.0f / 255.0f); // FIXME: interpolate?
459                 ent->render.scale = ent->state_current.scale * (1.0f / 16.0f); // FIXME: interpolate?
460
461                 // update interpolation info
462                 CL_LerpUpdate(ent);
463
464                 // handle effects now...
465                 dlightradius = 0;
466                 dlightcolor[0] = 0;
467                 dlightcolor[1] = 0;
468                 dlightcolor[2] = 0;
469
470                 // LordHavoc: if the entity has no effects, don't check each
471                 if (effects)
472                 {
473                         if (effects & EF_BRIGHTFIELD)
474                                 CL_EntityParticles (ent);
475                         if (effects & EF_MUZZLEFLASH)
476                         {
477                                 vec3_t v, v2;
478
479                                 AngleVectors (ent->render.angles, v, NULL, NULL);
480
481                                 v2[0] = v[0] * 18 + neworg[0];
482                                 v2[1] = v[1] * 18 + neworg[1];
483                                 v2[2] = v[2] * 18 + neworg[2] + 16;
484                                 TraceLine(neworg, v2, v, NULL, 0, true);
485
486                                 CL_AllocDlight (NULL, v, 100, 1, 1, 1, 0, 0);
487                         }
488                         if (effects & EF_DIMLIGHT)
489                         {
490                                 dlightcolor[0] += 200.0f;
491                                 dlightcolor[1] += 200.0f;
492                                 dlightcolor[2] += 200.0f;
493                         }
494                         if (effects & EF_BRIGHTLIGHT)
495                         {
496                                 dlightcolor[0] += 400.0f;
497                                 dlightcolor[1] += 400.0f;
498                                 dlightcolor[2] += 400.0f;
499                         }
500                         // LordHavoc: added EF_RED and EF_BLUE
501                         if (effects & EF_RED) // red
502                         {
503                                 dlightcolor[0] += 200.0f;
504                                 dlightcolor[1] +=  20.0f;
505                                 dlightcolor[2] +=  20.0f;
506                         }
507                         if (effects & EF_BLUE) // blue
508                         {
509                                 dlightcolor[0] +=  20.0f;
510                                 dlightcolor[1] +=  20.0f;
511                                 dlightcolor[2] += 200.0f;
512                         }
513                         if (effects & EF_FLAME)
514                         {
515                                 if (ent->render.model)
516                                 {
517                                         vec3_t mins, maxs;
518                                         int temp;
519                                         if (ent->render.angles[0] || ent->render.angles[2])
520                                         {
521                                                 VectorAdd(neworg, ent->render.model->rotatedmins, mins);
522                                                 VectorAdd(neworg, ent->render.model->rotatedmaxs, maxs);
523                                         }
524                                         else if (ent->render.angles[1])
525                                         {
526                                                 VectorAdd(neworg, ent->render.model->yawmins, mins);
527                                                 VectorAdd(neworg, ent->render.model->yawmaxs, maxs);
528                                         }
529                                         else
530                                         {
531                                                 VectorAdd(neworg, ent->render.model->normalmins, mins);
532                                                 VectorAdd(neworg, ent->render.model->normalmaxs, maxs);
533                                         }
534                                         // how many flames to make
535                                         temp = (int) (cl.time * 300) - (int) (cl.oldtime * 300);
536                                         CL_FlameCube(mins, maxs, temp);
537                                 }
538                                 d = lhrandom(200, 250);
539                                 dlightcolor[0] += d * 1.0f;
540                                 dlightcolor[1] += d * 0.7f;
541                                 dlightcolor[2] += d * 0.3f;
542                         }
543                 }
544
545                 // LordHavoc: if the model has no flags, don't check each
546                 if (ent->render.model && ent->render.model->flags)
547                 {
548                         if (ent->render.model->flags & EF_ROTATE)
549                         {
550                                 ent->render.angles[1] = bobjrotate;
551                                 ent->render.origin[2] += bobjoffset;
552                         }
553                         // only do trails if present in the previous frame as well
554                         if (ent->state_previous.active)
555                         {
556                                 if (ent->render.model->flags & EF_GIB)
557                                         CL_RocketTrail (oldorg, neworg, 2, ent);
558                                 else if (ent->render.model->flags & EF_ZOMGIB)
559                                         CL_RocketTrail (oldorg, neworg, 4, ent);
560                                 else if (ent->render.model->flags & EF_TRACER)
561                                         CL_RocketTrail (oldorg, neworg, 3, ent);
562                                 else if (ent->render.model->flags & EF_TRACER2)
563                                         CL_RocketTrail (oldorg, neworg, 5, ent);
564                                 else if (ent->render.model->flags & EF_ROCKET)
565                                 {
566                                         CL_RocketTrail (oldorg, ent->render.origin, 0, ent);
567                                         // LordHavoc: changed from 200, 160, 80 to 250, 200, 100
568                                         dlightcolor[0] += 250.0f;
569                                         dlightcolor[1] += 200.0f;
570                                         dlightcolor[2] += 100.0f;
571                                 }
572                                 else if (ent->render.model->flags & EF_GRENADE)
573                                 {
574                                         if (ent->render.alpha == -1) // LordHavoc: Nehahra dem compatibility
575                                                 CL_RocketTrail (oldorg, neworg, 7, ent);
576                                         else
577                                                 CL_RocketTrail (oldorg, neworg, 1, ent);
578                                 }
579                                 else if (ent->render.model->flags & EF_TRACER3)
580                                         CL_RocketTrail (oldorg, neworg, 6, ent);
581                         }
582                 }
583                 // LordHavoc: customizable glow
584                 glowsize = ent->state_current.glowsize * 4.0f; // FIXME: interpolate?
585                 glowcolor = ent->state_current.glowcolor;
586                 if (glowsize)
587                 {
588                         byte *tempcolor = (byte *)&d_8to24table[glowcolor];
589                         dlightcolor[0] += glowsize * tempcolor[0] * (1.0f / 255.0f);
590                         dlightcolor[1] += glowsize * tempcolor[1] * (1.0f / 255.0f);
591                         dlightcolor[2] += glowsize * tempcolor[2] * (1.0f / 255.0f);
592                 }
593                 // LordHavoc: customizable trail
594                 if (ent->render.flags & RENDER_GLOWTRAIL)
595                         CL_RocketTrail2 (oldorg, neworg, glowcolor, ent);
596
597                 if (dlightcolor[0] || dlightcolor[1] || dlightcolor[2])
598                 {
599                         vec3_t vec;
600                         dlightradius = VectorLength(dlightcolor);
601                         d = 1.0f / dlightradius;
602                         VectorCopy(neworg, vec);
603                         // hack to make glowing player light shine on their gun
604                         if (i == cl.viewentity && !chase_active.integer)
605                                 vec[2] += 30;
606                         CL_AllocDlight (/*&ent->render*/ NULL, vec, dlightradius, dlightcolor[0] * d, dlightcolor[1] * d, dlightcolor[2] * d, 0, 0);
607                 }
608
609                 if (chase_active.integer)
610                 {
611                         if (ent->render.flags & RENDER_VIEWMODEL)
612                                 continue;
613                 }
614                 else
615                 {
616                         if (i == cl.viewentity || (ent->render.flags & RENDER_EXTERIORMODEL))
617                                 continue;
618                 }
619
620                 if (ent->render.model == NULL)
621                         continue;
622                 if (effects & EF_NODRAW)
623                         continue;
624                 if (r_refdef.numentities < MAX_VISEDICTS)
625                         r_refdef.entities[r_refdef.numentities++] = &ent->render;
626         }
627 }
628
629 void CL_LerpPlayerEye(float frac)
630 {
631         if (cl.entitydatabase.numframes)
632         {
633                 cl.viewentorigin[0] = cl.viewentoriginold[0] + frac * (cl.viewentoriginnew[0] - cl.viewentoriginold[0]);
634                 cl.viewentorigin[1] = cl.viewentoriginold[1] + frac * (cl.viewentoriginnew[1] - cl.viewentoriginold[1]);
635                 cl.viewentorigin[2] = cl.viewentoriginold[2] + frac * (cl.viewentoriginnew[2] - cl.viewentoriginold[2]);
636         }
637         else
638                 VectorCopy (cl_entities[cl.viewentity].render.origin, cl.viewentorigin);
639 }
640
641 static void CL_LerpPlayerVelocity (float frac)
642 {
643         int i;
644         float d;
645
646         for (i = 0;i < 3;i++)
647                 cl.velocity[i] = cl.mvelocity[1][i] + frac * (cl.mvelocity[0][i] - cl.mvelocity[1][i]);
648
649         if (cls.demoplayback)
650         {
651                 // interpolate the angles
652                 for (i = 0;i < 3;i++)
653                 {
654                         d = cl.mviewangles[0][i] - cl.mviewangles[1][i];
655                         if (d > 180)
656                                 d -= 360;
657                         else if (d < -180)
658                                 d += 360;
659                         cl.viewangles[i] = cl.mviewangles[1][i] + frac*d;
660                 }
661         }
662 }
663
664 void CL_Effect(vec3_t org, int modelindex, int startframe, int framecount, float framerate)
665 {
666         int i;
667         cl_effect_t *e;
668         if (!modelindex) // sanity check
669                 return;
670         for (i = 0, e = cl_effect;i < MAX_EFFECTS;i++, e++)
671         {
672                 if (e->active)
673                         continue;
674                 e->active = true;
675                 VectorCopy(org, e->origin);
676                 e->modelindex = modelindex;
677                 e->starttime = cl.time;
678                 e->startframe = startframe;
679                 e->endframe = startframe + framecount;
680                 e->framerate = framerate;
681
682                 e->frame = 0;
683                 e->frame1time = cl.time;
684                 e->frame2time = cl.time;
685                 break;
686         }
687 }
688
689 static void CL_RelinkEffects()
690 {
691         int i, intframe;
692         cl_effect_t *e;
693         entity_t *vis;
694         float frame;
695
696         for (i = 0, e = cl_effect;i < MAX_EFFECTS;i++, e++)
697         {
698                 if (e->active)
699                 {
700                         frame = (cl.time - e->starttime) * e->framerate + e->startframe;
701                         intframe = frame;
702                         if (intframe < 0 || intframe >= e->endframe)
703                         {
704                                 e->active = false;
705                                 memset(e, 0, sizeof(*e));
706                                 continue;
707                         }
708
709                         if (intframe != e->frame)
710                         {
711                                 e->frame = intframe;
712                                 e->frame1time = e->frame2time;
713                                 e->frame2time = cl.time;
714                         }
715
716                         if ((vis = CL_NewTempEntity()))
717                         {
718                                 // interpolation stuff
719                                 vis->render.frame1 = intframe;
720                                 vis->render.frame2 = intframe + 1;
721                                 if (vis->render.frame2 >= e->endframe)
722                                         vis->render.frame2 = -1; // disappear
723                                 vis->render.framelerp = frame - intframe;
724                                 vis->render.frame1time = e->frame1time;
725                                 vis->render.frame2time = e->frame2time;
726
727                                 // normal stuff
728                                 VectorCopy(e->origin, vis->render.origin);
729                                 vis->render.model = cl.model_precache[e->modelindex];
730                                 vis->render.frame = vis->render.frame2;
731                                 vis->render.colormap = -1; // no special coloring
732                                 vis->render.scale = 1;
733                                 vis->render.alpha = 1;
734                         }
735                 }
736         }
737 }
738
739 void CL_RelinkEntities (void)
740 {
741         float frac;
742
743         // fraction from previous network update to current
744         frac = CL_LerpPoint ();
745
746         CL_DecayLights ();
747         CL_RelinkStaticEntities();
748         CL_RelinkNetworkEntities();
749         TraceLine_ScanForBModels();
750         CL_RelinkEffects();
751         CL_MoveParticles();
752         CL_UpdateTEnts();
753
754         CL_LerpPlayerEye(frac);
755         CL_LerpPlayerVelocity(frac);
756 }
757
758
759 /*
760 ===============
761 CL_ReadFromServer
762
763 Read all incoming data from the server
764 ===============
765 */
766 int CL_ReadFromServer (void)
767 {
768         int ret, netshown;
769
770         cl.oldtime = cl.time;
771         cl.time += cl.frametime;
772
773         netshown = false;
774         do
775         {
776                 ret = CL_GetMessage ();
777                 if (ret == -1)
778                         Host_Error ("CL_ReadFromServer: lost server connection");
779                 if (!ret)
780                         break;
781
782                 cl.last_received_message = realtime;
783
784                 if (cl_shownet.integer)
785                         netshown = true;
786
787                 CL_ParseServerMessage ();
788         }
789         while (ret && cls.state == ca_connected);
790
791         if (netshown)
792                 Con_Printf ("\n");
793
794         r_refdef.numentities = 0;
795         if (cls.state == ca_connected && cl.worldmodel)
796         {
797                 CL_RelinkEntities ();
798
799                 // run cgame code (which can add more entities)
800                 CL_CGVM_Frame();
801         }
802
803 //
804 // bring the links up to date
805 //
806         return 0;
807 }
808
809 /*
810 =================
811 CL_SendCmd
812 =================
813 */
814 void CL_SendCmd (void)
815 {
816         usercmd_t               cmd;
817
818         if (cls.state != ca_connected)
819                 return;
820
821         if (cls.signon == SIGNONS)
822         {
823         // get basic movement from keyboard
824                 CL_BaseMove (&cmd);
825
826         // allow mice or other external controllers to add to the move
827                 IN_Move (&cmd);
828
829         // send the unreliable message
830                 CL_SendMove (&cmd);
831         }
832
833         if (cls.demoplayback)
834         {
835                 SZ_Clear (&cls.message);
836                 return;
837         }
838
839 // send the reliable message
840         if (!cls.message.cursize)
841                 return;         // no message at all
842
843         if (!NET_CanSendMessage (cls.netcon))
844         {
845                 Con_DPrintf ("CL_WriteToServer: can't send\n");
846                 return;
847         }
848
849         if (NET_SendMessage (cls.netcon, &cls.message) == -1)
850                 Host_Error ("CL_WriteToServer: lost server connection");
851
852         SZ_Clear (&cls.message);
853 }
854
855 // LordHavoc: pausedemo command
856 static void CL_PauseDemo_f (void)
857 {
858         cls.demopaused = !cls.demopaused;
859         if (cls.demopaused)
860                 Con_Printf("Demo paused\n");
861         else
862                 Con_Printf("Demo unpaused\n");
863 }
864
865 /*
866 ======================
867 CL_PModel_f
868 LordHavoc: Intended for Nehahra, I personally think this is dumb, but Mindcrime won't listen.
869 ======================
870 */
871 static void CL_PModel_f (void)
872 {
873         int i;
874         eval_t *val;
875
876         if (Cmd_Argc () == 1)
877         {
878                 Con_Printf ("\"pmodel\" is \"%s\"\n", cl_pmodel.string);
879                 return;
880         }
881         i = atoi(Cmd_Argv(1));
882
883         if (cmd_source == src_command)
884         {
885                 if (cl_pmodel.integer == i)
886                         return;
887                 Cvar_SetValue ("_cl_pmodel", i);
888                 if (cls.state == ca_connected)
889                         Cmd_ForwardToServer ();
890                 return;
891         }
892
893         host_client->pmodel = i;
894         if ((val = GETEDICTFIELDVALUE(host_client->edict, eval_pmodel)))
895                 val->_float = i;
896 }
897
898 /*
899 ======================
900 CL_Fog_f
901 ======================
902 */
903 static void CL_Fog_f (void)
904 {
905         if (Cmd_Argc () == 1)
906         {
907                 Con_Printf ("\"fog\" is \"%f %f %f %f\"\n", fog_density, fog_red, fog_green, fog_blue);
908                 return;
909         }
910         fog_density = atof(Cmd_Argv(1));
911         fog_red = atof(Cmd_Argv(2));
912         fog_green = atof(Cmd_Argv(3));
913         fog_blue = atof(Cmd_Argv(4));
914 }
915
916 /*
917 =================
918 CL_Init
919 =================
920 */
921 void CL_Init (void)
922 {
923         cl_scores_mempool = Mem_AllocPool("client player info");
924
925         cl_refdef_mempool = Mem_AllocPool("refdef");
926         memset(&r_refdef, 0, sizeof(r_refdef));
927         r_refdef.entities = Mem_Alloc(cl_refdef_mempool, sizeof(entity_render_t *) * MAX_VISEDICTS);
928
929         SZ_Alloc (&cls.message, 1024, "cls.message");
930
931         CL_InitInput ();
932         CL_InitTEnts ();
933
934 //
935 // register our commands
936 //
937         Cvar_RegisterVariable (&cl_name);
938         Cvar_RegisterVariable (&cl_color);
939         if (gamemode == GAME_NEHAHRA)
940                 Cvar_RegisterVariable (&cl_pmodel);
941         Cvar_RegisterVariable (&cl_upspeed);
942         Cvar_RegisterVariable (&cl_forwardspeed);
943         Cvar_RegisterVariable (&cl_backspeed);
944         Cvar_RegisterVariable (&cl_sidespeed);
945         Cvar_RegisterVariable (&cl_movespeedkey);
946         Cvar_RegisterVariable (&cl_yawspeed);
947         Cvar_RegisterVariable (&cl_pitchspeed);
948         Cvar_RegisterVariable (&cl_anglespeedkey);
949         Cvar_RegisterVariable (&cl_shownet);
950         Cvar_RegisterVariable (&cl_nolerp);
951         Cvar_RegisterVariable (&lookspring);
952         Cvar_RegisterVariable (&lookstrafe);
953         Cvar_RegisterVariable (&sensitivity);
954         Cvar_RegisterVariable (&freelook);
955
956         Cvar_RegisterVariable (&m_pitch);
957         Cvar_RegisterVariable (&m_yaw);
958         Cvar_RegisterVariable (&m_forward);
959         Cvar_RegisterVariable (&m_side);
960
961         Cvar_RegisterVariable (&cl_itembobspeed);
962         Cvar_RegisterVariable (&cl_itembobheight);
963
964         Cmd_AddCommand ("entities", CL_PrintEntities_f);
965         Cmd_AddCommand ("bitprofile", CL_BitProfile_f);
966         Cmd_AddCommand ("disconnect", CL_Disconnect_f);
967         Cmd_AddCommand ("record", CL_Record_f);
968         Cmd_AddCommand ("stop", CL_Stop_f);
969         Cmd_AddCommand ("playdemo", CL_PlayDemo_f);
970         Cmd_AddCommand ("timedemo", CL_TimeDemo_f);
971
972         Cmd_AddCommand ("fog", CL_Fog_f);
973
974         // LordHavoc: added pausedemo
975         Cmd_AddCommand ("pausedemo", CL_PauseDemo_f);
976         if (gamemode == GAME_NEHAHRA)
977                 Cmd_AddCommand ("pmodel", CL_PModel_f);
978
979         Cvar_RegisterVariable(&cl_draweffects);
980
981         CL_Parse_Init();
982         CL_Particles_Init();
983         CL_Screen_Init();
984         CL_CGVM_Init();
985 }