added in_pitch_min and in_pitch_max cvars to limit pitch (default: -90 to +90)
[divverent/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                 cls.state = ca_disconnected; // prevent this code from executing again during Host_ShutdownServer
201                 // if running a local server, shut it down
202                 if (sv.active)
203                         Host_ShutdownServer(false);
204         }
205         cls.state = ca_disconnected;
206
207         cls.demoplayback = cls.timedemo = false;
208         cls.signon = 0;
209 }
210
211 void CL_Disconnect_f (void)
212 {
213         CL_Disconnect ();
214         if (sv.active)
215                 Host_ShutdownServer (false);
216 }
217
218
219
220
221 /*
222 =====================
223 CL_EstablishConnection
224
225 Host should be either "local" or a net address to be passed on
226 =====================
227 */
228 void CL_EstablishConnection (char *host)
229 {
230         sizebuf_t       buf;
231         byte    data[128];
232
233         buf.maxsize = 128;
234         buf.cursize = 0;
235         buf.data = data;
236
237         if (cls.state == ca_dedicated)
238                 return;
239
240         if (cls.demoplayback)
241                 return;
242
243         CL_Disconnect ();
244
245         cls.netcon = NET_Connect (host);
246         if (!cls.netcon)
247                 Host_Error ("CL_Connect: connect failed\n");
248         Con_DPrintf ("CL_EstablishConnection: connected to %s\n", host);
249
250         cls.demonum = -1;                       // not in the demo loop now
251         cls.state = ca_connected;
252         cls.signon = 0;                         // need all the signon messages before playing
253
254         CL_ClearState ();
255 }
256
257 /*
258 ==============
259 CL_PrintEntities_f
260 ==============
261 */
262 static void CL_PrintEntities_f (void)
263 {
264         entity_t        *ent;
265         int                     i, j;
266         char            name[32];
267
268         for (i = 0, ent = cl_entities;i < MAX_EDICTS /*cl.num_entities*/;i++, ent++)
269         {
270                 if (!ent->state_current.active)
271                         continue;
272                 if (!ent->render.model)
273                         continue;
274
275                 Con_Printf ("%3i:", i);
276                 if (!ent->render.model)
277                 {
278                         Con_Printf ("EMPTY\n");
279                         continue;
280                 }
281                 strncpy(name, ent->render.model->name, 25);
282                 name[25] = 0;
283                 for (j = strlen(name);j < 25;j++)
284                         name[j] = ' ';
285                 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);
286         }
287 }
288
289
290 /*
291 ===============
292 CL_LerpPoint
293
294 Determines the fraction between the last two messages that the objects
295 should be put at.
296 ===============
297 */
298 static float CL_LerpPoint (void)
299 {
300         float   f;
301
302         // dropped packet, or start of demo
303         if (cl.mtime[1] < cl.mtime[0] - 0.1)
304                 cl.mtime[1] = cl.mtime[0] - 0.1;
305
306         cl.time = bound(cl.mtime[1], cl.time, cl.mtime[0]);
307
308         // LordHavoc: lerp in listen games as the server is being capped below the client (usually)
309         f = cl.mtime[0] - cl.mtime[1];
310         if (!f || cl_nolerp.integer || cls.timedemo || (sv.active && svs.maxclients == 1))
311         {
312                 cl.time = cl.mtime[0];
313                 return 1;
314         }
315
316         f = (cl.time - cl.mtime[1]) / f;
317         return bound(0, f, 1);
318 }
319
320 static void CL_RelinkStaticEntities(void)
321 {
322         int i;
323         for (i = 0;i < cl.num_statics && r_refdef.numentities < MAX_VISEDICTS;i++)
324         {
325                 Mod_CheckLoaded(cl_static_entities[i].render.model);
326                 r_refdef.entities[r_refdef.numentities++] = &cl_static_entities[i].render;
327         }
328 }
329
330 /*
331 ===============
332 CL_RelinkEntities
333 ===============
334 */
335 static void CL_RelinkNetworkEntities()
336 {
337         entity_t        *ent;
338         int                     i, glowcolor, effects;
339         float           f, d, bobjrotate, bobjoffset, dlightradius, glowsize, lerp;
340         vec3_t          oldorg, neworg, delta, dlightcolor;
341
342         bobjrotate = ANGLEMOD(100*cl.time);
343         if (cl_itembobheight.value)
344                 bobjoffset = (cos(cl.time * cl_itembobspeed.value * (2.0 * M_PI)) + 1.0) * 0.5 * cl_itembobheight.value;
345         else
346                 bobjoffset = 0;
347
348 // start on the entity after the world
349         for (i = 1, ent = cl_entities + 1;i < MAX_EDICTS /*cl.num_entities*/;i++, ent++)
350         {
351                 // if the object wasn't included in the latest packet, remove it
352                 if (!ent->state_current.active)
353                         continue;
354
355                 VectorCopy(ent->persistent.trail_origin, oldorg);
356
357                 if (!ent->state_previous.active)
358                 {
359                         // only one state available
360                         lerp = 1;
361                         VectorCopy (ent->state_current.origin, oldorg); // skip trails
362                         VectorCopy (ent->state_current.origin, neworg);
363                         VectorCopy (ent->state_current.angles, ent->render.angles);
364
365                         /*
366                         // monster interpolation
367                         ent->persistent.steplerptime = 0;
368                         VectorCopy(ent->state_current.origin, ent->persistent.stepoldorigin);
369                         VectorCopy(ent->state_current.angles, ent->persistent.stepoldangles);
370                         VectorCopy(ent->state_current.origin, ent->persistent.steporigin);
371                         VectorCopy(ent->state_current.angles, ent->persistent.stepangles);
372                         */
373                 }
374                 /*
375                 else if ((ent->state_current.flags & ent->state_previous.flags) & ENTFLAG_STEP)
376                 {
377                         if (ent->state_current.origin[0] != ent->persistent.steporigin[0]
378                          || ent->state_current.origin[1] != ent->persistent.steporigin[1]
379                          || ent->state_current.origin[2] != ent->persistent.steporigin[2]
380                          || ent->state_current.angles[0] != ent->persistent.stepangles[0]
381                          || ent->state_current.angles[1] != ent->persistent.stepangles[1]
382                          || ent->state_current.angles[2] != ent->persistent.stepangles[2])
383                         {
384                                 // update lerp positions
385                                 ent->clientpersistent.steplerptime = sv.time;
386                                 VectorCopy(ent->steporigin, ent->stepoldorigin);
387                                 VectorCopy(ent->stepangles, ent->stepoldangles);
388                                 VectorCopy(ent->v.origin, ent->steporigin);
389                                 VectorCopy(ent->v.angles, ent->stepangles);
390                         }
391                         lerp = (cl.time - ent->persistent.steplerptime) * 10.0;
392                         if (lerp < 1)
393                         {
394                                 // origin
395                                 VectorSubtract(ent->persistent.steporigin, ent->persistent.stepoldorigin, delta);
396                                 VectorMA(ent->persistent.stepoldorigin, lerp, delta, neworg);
397
398                                 // angles
399                                 VectorSubtract(ent->persistent.stepangles, ent->persistent.stepoldangles, delta);
400                                 // choose shortest rotate (to avoid 'spin around' situations)
401                                 if (delta[0] < -180) delta[0] += 360;else if (delta[0] >= 180) delta[0] -= 360;
402                                 if (delta[1] < -180) delta[1] += 360;else if (delta[1] >= 180) delta[1] -= 360;
403                                 if (delta[2] < -180) delta[2] += 360;else if (delta[2] >= 180) delta[2] -= 360;
404                                 VectorMA(ent->stepoldangles, lerp, delta, ent->render.angles);
405                         }
406                         else
407                         {
408                                 VectorCopy(ent->persistent.steporigin, neworg);
409                                 VectorCopy(ent->persistent.stepangles, ent->render.angles);
410                         }
411                 }
412                 */
413                 else
414                 {
415                         /*
416                         // monster interpolation
417                         ent->persistent.steplerptime = 0;
418                         VectorCopy(ent->state_current.origin, ent->persistent.stepoldorigin);
419                         VectorCopy(ent->state_current.angles, ent->persistent.stepoldangles);
420                         VectorCopy(ent->state_current.origin, ent->persistent.steporigin);
421                         VectorCopy(ent->state_current.angles, ent->persistent.stepangles);
422                         */
423
424                         // if the delta is large, assume a teleport and don't lerp
425                         VectorSubtract(ent->state_current.origin, ent->state_previous.origin, delta);
426                         // LordHavoc: increased tolerance from 100 to 200, and now to 1000
427                         if ((sv.active && svs.maxclients == 1 && !(ent->state_current.flags & RENDER_STEP)) || cls.timedemo || DotProduct(delta, delta) > 1000*1000 || cl_nolerp.integer)
428                                 lerp = 1;
429                         else
430                         {
431                                 f = ent->state_current.time - ent->state_previous.time;
432                                 if (f > 0)
433                                         lerp = (cl.time - ent->state_previous.time) / f;
434                                 else
435                                         lerp = 1;
436                         }
437                         if (lerp >= 1)
438                         {
439                                 // no interpolation
440                                 VectorCopy (ent->state_current.origin, neworg);
441                                 VectorCopy (ent->state_current.angles, ent->render.angles);
442                         }
443                         else
444                         {
445                                 // interpolate the origin and angles
446                                 VectorMA(ent->state_previous.origin, lerp, delta, neworg);
447                                 VectorSubtract(ent->state_current.angles, ent->state_previous.angles, delta);
448                                 if (delta[0] < -180) delta[0] += 360;else if (delta[0] >= 180) delta[0] -= 360;
449                                 if (delta[1] < -180) delta[1] += 360;else if (delta[1] >= 180) delta[1] -= 360;
450                                 if (delta[2] < -180) delta[2] += 360;else if (delta[2] >= 180) delta[2] -= 360;
451                                 VectorMA(ent->state_previous.angles, lerp, delta, ent->render.angles);
452                         }
453                 }
454
455                 VectorCopy (neworg, ent->persistent.trail_origin);
456                 // persistent.modelindex will be updated by CL_LerpUpdate
457                 if (ent->state_current.modelindex != ent->persistent.modelindex)
458                         VectorCopy(neworg, oldorg);
459
460                 VectorCopy (neworg, ent->render.origin);
461                 ent->render.flags = ent->state_current.flags;
462                 ent->render.effects = effects = ent->state_current.effects;
463                 if (cl.scores == NULL || !ent->state_current.colormap)
464                         ent->render.colormap = -1; // no special coloring
465                 else
466                         ent->render.colormap = cl.scores[ent->state_current.colormap - 1].colors; // color it
467                 ent->render.skinnum = ent->state_current.skin;
468                 ent->render.alpha = ent->state_current.alpha * (1.0f / 255.0f); // FIXME: interpolate?
469                 ent->render.scale = ent->state_current.scale * (1.0f / 16.0f); // FIXME: interpolate?
470
471                 // update interpolation info
472                 CL_LerpUpdate(ent);
473
474                 // handle effects now...
475                 dlightradius = 0;
476                 dlightcolor[0] = 0;
477                 dlightcolor[1] = 0;
478                 dlightcolor[2] = 0;
479
480                 // LordHavoc: if the entity has no effects, don't check each
481                 if (effects)
482                 {
483                         if (effects & EF_BRIGHTFIELD)
484                                 CL_EntityParticles (ent);
485                         if (effects & EF_MUZZLEFLASH)
486                         {
487                                 vec3_t v, v2;
488
489                                 AngleVectors (ent->render.angles, v, NULL, NULL);
490
491                                 v2[0] = v[0] * 18 + neworg[0];
492                                 v2[1] = v[1] * 18 + neworg[1];
493                                 v2[2] = v[2] * 18 + neworg[2] + 16;
494                                 TraceLine(neworg, v2, v, NULL, 0, true);
495
496                                 CL_AllocDlight (NULL, v, 100, 1, 1, 1, 0, 0);
497                         }
498                         if (effects & EF_DIMLIGHT)
499                         {
500                                 dlightcolor[0] += 200.0f;
501                                 dlightcolor[1] += 200.0f;
502                                 dlightcolor[2] += 200.0f;
503                         }
504                         if (effects & EF_BRIGHTLIGHT)
505                         {
506                                 dlightcolor[0] += 400.0f;
507                                 dlightcolor[1] += 400.0f;
508                                 dlightcolor[2] += 400.0f;
509                         }
510                         // LordHavoc: added EF_RED and EF_BLUE
511                         if (effects & EF_RED) // red
512                         {
513                                 dlightcolor[0] += 200.0f;
514                                 dlightcolor[1] +=  20.0f;
515                                 dlightcolor[2] +=  20.0f;
516                         }
517                         if (effects & EF_BLUE) // blue
518                         {
519                                 dlightcolor[0] +=  20.0f;
520                                 dlightcolor[1] +=  20.0f;
521                                 dlightcolor[2] += 200.0f;
522                         }
523                         if (effects & EF_FLAME)
524                         {
525                                 if (ent->render.model)
526                                 {
527                                         vec3_t mins, maxs;
528                                         int temp;
529                                         if (ent->render.angles[0] || ent->render.angles[2])
530                                         {
531                                                 VectorAdd(neworg, ent->render.model->rotatedmins, mins);
532                                                 VectorAdd(neworg, ent->render.model->rotatedmaxs, maxs);
533                                         }
534                                         else if (ent->render.angles[1])
535                                         {
536                                                 VectorAdd(neworg, ent->render.model->yawmins, mins);
537                                                 VectorAdd(neworg, ent->render.model->yawmaxs, maxs);
538                                         }
539                                         else
540                                         {
541                                                 VectorAdd(neworg, ent->render.model->normalmins, mins);
542                                                 VectorAdd(neworg, ent->render.model->normalmaxs, maxs);
543                                         }
544                                         // how many flames to make
545                                         temp = (int) (cl.time * 300) - (int) (cl.oldtime * 300);
546                                         CL_FlameCube(mins, maxs, temp);
547                                 }
548                                 d = lhrandom(200, 250);
549                                 dlightcolor[0] += d * 1.0f;
550                                 dlightcolor[1] += d * 0.7f;
551                                 dlightcolor[2] += d * 0.3f;
552                         }
553                 }
554
555                 // LordHavoc: if the model has no flags, don't check each
556                 if (ent->render.model && ent->render.model->flags)
557                 {
558                         if (ent->render.model->flags & EF_ROTATE)
559                         {
560                                 ent->render.angles[1] = bobjrotate;
561                                 ent->render.origin[2] += bobjoffset;
562                         }
563                         // only do trails if present in the previous frame as well
564                         if (ent->state_previous.active)
565                         {
566                                 if (ent->render.model->flags & EF_GIB)
567                                         CL_RocketTrail (oldorg, neworg, 2, ent);
568                                 else if (ent->render.model->flags & EF_ZOMGIB)
569                                         CL_RocketTrail (oldorg, neworg, 4, ent);
570                                 else if (ent->render.model->flags & EF_TRACER)
571                                         CL_RocketTrail (oldorg, neworg, 3, ent);
572                                 else if (ent->render.model->flags & EF_TRACER2)
573                                         CL_RocketTrail (oldorg, neworg, 5, ent);
574                                 else if (ent->render.model->flags & EF_ROCKET)
575                                 {
576                                         CL_RocketTrail (oldorg, ent->render.origin, 0, ent);
577                                         // LordHavoc: changed from 200, 160, 80 to 250, 200, 100
578                                         dlightcolor[0] += 250.0f;
579                                         dlightcolor[1] += 200.0f;
580                                         dlightcolor[2] += 100.0f;
581                                 }
582                                 else if (ent->render.model->flags & EF_GRENADE)
583                                 {
584                                         if (ent->render.alpha == -1) // LordHavoc: Nehahra dem compatibility
585                                                 CL_RocketTrail (oldorg, neworg, 7, ent);
586                                         else
587                                                 CL_RocketTrail (oldorg, neworg, 1, ent);
588                                 }
589                                 else if (ent->render.model->flags & EF_TRACER3)
590                                         CL_RocketTrail (oldorg, neworg, 6, ent);
591                         }
592                 }
593                 // LordHavoc: customizable glow
594                 glowsize = ent->state_current.glowsize * 4.0f; // FIXME: interpolate?
595                 glowcolor = ent->state_current.glowcolor;
596                 if (glowsize)
597                 {
598                         byte *tempcolor = (byte *)&d_8to24table[glowcolor];
599                         dlightcolor[0] += glowsize * tempcolor[0] * (1.0f / 255.0f);
600                         dlightcolor[1] += glowsize * tempcolor[1] * (1.0f / 255.0f);
601                         dlightcolor[2] += glowsize * tempcolor[2] * (1.0f / 255.0f);
602                 }
603                 // LordHavoc: customizable trail
604                 if (ent->render.flags & RENDER_GLOWTRAIL)
605                         CL_RocketTrail2 (oldorg, neworg, glowcolor, ent);
606
607                 if (dlightcolor[0] || dlightcolor[1] || dlightcolor[2])
608                 {
609                         vec3_t vec;
610                         dlightradius = VectorLength(dlightcolor);
611                         d = 1.0f / dlightradius;
612                         VectorCopy(neworg, vec);
613                         // hack to make glowing player light shine on their gun
614                         if (i == cl.viewentity && !chase_active.integer)
615                                 vec[2] += 30;
616                         CL_AllocDlight (/*&ent->render*/ NULL, vec, dlightradius, dlightcolor[0] * d, dlightcolor[1] * d, dlightcolor[2] * d, 0, 0);
617                 }
618
619                 if (chase_active.integer)
620                 {
621                         if (ent->render.flags & RENDER_VIEWMODEL)
622                                 continue;
623                 }
624                 else
625                 {
626                         if (i == cl.viewentity || (ent->render.flags & RENDER_EXTERIORMODEL))
627                                 continue;
628                 }
629
630                 if (ent->render.model == NULL)
631                         continue;
632                 if (effects & EF_NODRAW)
633                         continue;
634                 if (r_refdef.numentities < MAX_VISEDICTS)
635                         r_refdef.entities[r_refdef.numentities++] = &ent->render;
636         }
637 }
638
639 void CL_LerpPlayer(float frac)
640 {
641         int i;
642         float d;
643
644         if (cl.entitydatabase.numframes)
645         {
646                 cl.viewentorigin[0] = cl.viewentoriginold[0] + frac * (cl.viewentoriginnew[0] - cl.viewentoriginold[0]);
647                 cl.viewentorigin[1] = cl.viewentoriginold[1] + frac * (cl.viewentoriginnew[1] - cl.viewentoriginold[1]);
648                 cl.viewentorigin[2] = cl.viewentoriginold[2] + frac * (cl.viewentoriginnew[2] - cl.viewentoriginold[2]);
649         }
650         else
651                 VectorCopy (cl_entities[cl.viewentity].render.origin, cl.viewentorigin);
652
653         cl.viewzoom = cl.viewzoomold + frac * (cl.viewzoomnew - cl.viewzoomold);
654
655         for (i = 0;i < 3;i++)
656                 cl.velocity[i] = cl.mvelocity[1][i] + frac * (cl.mvelocity[0][i] - cl.mvelocity[1][i]);
657
658         if (cls.demoplayback)
659         {
660                 // interpolate the angles
661                 for (i = 0;i < 3;i++)
662                 {
663                         d = cl.mviewangles[0][i] - cl.mviewangles[1][i];
664                         if (d > 180)
665                                 d -= 360;
666                         else if (d < -180)
667                                 d += 360;
668                         cl.viewangles[i] = cl.mviewangles[1][i] + frac*d;
669                 }
670         }
671 }
672
673 void CL_Effect(vec3_t org, int modelindex, int startframe, int framecount, float framerate)
674 {
675         int i;
676         cl_effect_t *e;
677         if (!modelindex) // sanity check
678                 return;
679         for (i = 0, e = cl_effect;i < MAX_EFFECTS;i++, e++)
680         {
681                 if (e->active)
682                         continue;
683                 e->active = true;
684                 VectorCopy(org, e->origin);
685                 e->modelindex = modelindex;
686                 e->starttime = cl.time;
687                 e->startframe = startframe;
688                 e->endframe = startframe + framecount;
689                 e->framerate = framerate;
690
691                 e->frame = 0;
692                 e->frame1time = cl.time;
693                 e->frame2time = cl.time;
694                 break;
695         }
696 }
697
698 static void CL_RelinkEffects()
699 {
700         int i, intframe;
701         cl_effect_t *e;
702         entity_t *vis;
703         float frame;
704
705         for (i = 0, e = cl_effect;i < MAX_EFFECTS;i++, e++)
706         {
707                 if (e->active)
708                 {
709                         frame = (cl.time - e->starttime) * e->framerate + e->startframe;
710                         intframe = frame;
711                         if (intframe < 0 || intframe >= e->endframe)
712                         {
713                                 e->active = false;
714                                 memset(e, 0, sizeof(*e));
715                                 continue;
716                         }
717
718                         if (intframe != e->frame)
719                         {
720                                 e->frame = intframe;
721                                 e->frame1time = e->frame2time;
722                                 e->frame2time = cl.time;
723                         }
724
725                         if ((vis = CL_NewTempEntity()))
726                         {
727                                 // interpolation stuff
728                                 vis->render.frame1 = intframe;
729                                 vis->render.frame2 = intframe + 1;
730                                 if (vis->render.frame2 >= e->endframe)
731                                         vis->render.frame2 = -1; // disappear
732                                 vis->render.framelerp = frame - intframe;
733                                 vis->render.frame1time = e->frame1time;
734                                 vis->render.frame2time = e->frame2time;
735
736                                 // normal stuff
737                                 VectorCopy(e->origin, vis->render.origin);
738                                 vis->render.model = cl.model_precache[e->modelindex];
739                                 vis->render.frame = vis->render.frame2;
740                                 vis->render.colormap = -1; // no special coloring
741                                 vis->render.scale = 1;
742                                 vis->render.alpha = 1;
743                         }
744                 }
745         }
746 }
747
748 void CL_RelinkEntities (void)
749 {
750         float frac;
751
752         // fraction from previous network update to current
753         frac = CL_LerpPoint ();
754
755         CL_DecayLights ();
756         CL_RelinkStaticEntities();
757         CL_RelinkNetworkEntities();
758         TraceLine_ScanForBModels();
759         CL_RelinkEffects();
760         CL_MoveParticles();
761         CL_UpdateTEnts();
762
763         CL_LerpPlayer(frac);
764 }
765
766
767 /*
768 ===============
769 CL_ReadFromServer
770
771 Read all incoming data from the server
772 ===============
773 */
774 int CL_ReadFromServer (void)
775 {
776         int ret, netshown;
777
778         cl.oldtime = cl.time;
779         cl.time += cl.frametime;
780
781         netshown = false;
782         do
783         {
784                 ret = CL_GetMessage ();
785                 if (ret == -1)
786                         Host_Error ("CL_ReadFromServer: lost server connection");
787                 if (!ret)
788                         break;
789
790                 cl.last_received_message = realtime;
791
792                 if (cl_shownet.integer)
793                         netshown = true;
794
795                 CL_ParseServerMessage ();
796         }
797         while (ret && cls.state == ca_connected);
798
799         if (netshown)
800                 Con_Printf ("\n");
801
802         r_refdef.numentities = 0;
803         if (cls.state == ca_connected && cl.worldmodel)
804         {
805                 CL_RelinkEntities ();
806
807                 // run cgame code (which can add more entities)
808                 CL_CGVM_Frame();
809         }
810
811 //
812 // bring the links up to date
813 //
814         return 0;
815 }
816
817 /*
818 =================
819 CL_SendCmd
820 =================
821 */
822 void CL_SendCmd (void)
823 {
824         usercmd_t               cmd;
825
826         if (cls.state != ca_connected)
827                 return;
828
829         if (cls.signon == SIGNONS)
830         {
831         // get basic movement from keyboard
832                 CL_BaseMove (&cmd);
833
834         // allow mice or other external controllers to add to the move
835                 IN_Move (&cmd);
836
837         // send the unreliable message
838                 CL_SendMove (&cmd);
839         }
840         else
841         {
842                 // LordHavoc: fix for NAT routing of netquake:
843                 // bounce back a clc_nop message to the newly allocated server port,
844                 // to establish a routing connection for incoming frames,
845                 // the server waits for this before sending anything
846                 if (realtime > cl.sendnoptime)
847                 {
848                         Con_DPrintf("sending clc_nop to get server's attention\n");
849                         cl.sendnoptime = realtime + 3;
850                         MSG_WriteByte(&cls.message, clc_nop);
851                 }
852         }
853
854         if (cls.demoplayback)
855         {
856                 SZ_Clear (&cls.message);
857                 return;
858         }
859
860 // send the reliable message
861         if (!cls.message.cursize)
862                 return;         // no message at all
863
864         if (!NET_CanSendMessage (cls.netcon))
865         {
866                 Con_DPrintf ("CL_WriteToServer: can't send\n");
867                 return;
868         }
869
870         if (NET_SendMessage (cls.netcon, &cls.message) == -1)
871                 Host_Error ("CL_WriteToServer: lost server connection");
872
873         SZ_Clear (&cls.message);
874 }
875
876 // LordHavoc: pausedemo command
877 static void CL_PauseDemo_f (void)
878 {
879         cls.demopaused = !cls.demopaused;
880         if (cls.demopaused)
881                 Con_Printf("Demo paused\n");
882         else
883                 Con_Printf("Demo unpaused\n");
884 }
885
886 /*
887 ======================
888 CL_PModel_f
889 LordHavoc: Intended for Nehahra, I personally think this is dumb, but Mindcrime won't listen.
890 ======================
891 */
892 static void CL_PModel_f (void)
893 {
894         int i;
895         eval_t *val;
896
897         if (Cmd_Argc () == 1)
898         {
899                 Con_Printf ("\"pmodel\" is \"%s\"\n", cl_pmodel.string);
900                 return;
901         }
902         i = atoi(Cmd_Argv(1));
903
904         if (cmd_source == src_command)
905         {
906                 if (cl_pmodel.integer == i)
907                         return;
908                 Cvar_SetValue ("_cl_pmodel", i);
909                 if (cls.state == ca_connected)
910                         Cmd_ForwardToServer ();
911                 return;
912         }
913
914         host_client->pmodel = i;
915         if ((val = GETEDICTFIELDVALUE(host_client->edict, eval_pmodel)))
916                 val->_float = i;
917 }
918
919 /*
920 ======================
921 CL_Fog_f
922 ======================
923 */
924 static void CL_Fog_f (void)
925 {
926         if (Cmd_Argc () == 1)
927         {
928                 Con_Printf ("\"fog\" is \"%f %f %f %f\"\n", fog_density, fog_red, fog_green, fog_blue);
929                 return;
930         }
931         fog_density = atof(Cmd_Argv(1));
932         fog_red = atof(Cmd_Argv(2));
933         fog_green = atof(Cmd_Argv(3));
934         fog_blue = atof(Cmd_Argv(4));
935 }
936
937 /*
938 =================
939 CL_Init
940 =================
941 */
942 void CL_Init (void)
943 {
944         cl_scores_mempool = Mem_AllocPool("client player info");
945
946         cl_refdef_mempool = Mem_AllocPool("refdef");
947         memset(&r_refdef, 0, sizeof(r_refdef));
948         r_refdef.entities = Mem_Alloc(cl_refdef_mempool, sizeof(entity_render_t *) * MAX_VISEDICTS);
949
950         SZ_Alloc (&cls.message, 1024, "cls.message");
951
952         CL_InitInput ();
953         CL_InitTEnts ();
954
955 //
956 // register our commands
957 //
958         Cvar_RegisterVariable (&cl_name);
959         Cvar_RegisterVariable (&cl_color);
960         if (gamemode == GAME_NEHAHRA)
961                 Cvar_RegisterVariable (&cl_pmodel);
962         Cvar_RegisterVariable (&cl_upspeed);
963         Cvar_RegisterVariable (&cl_forwardspeed);
964         Cvar_RegisterVariable (&cl_backspeed);
965         Cvar_RegisterVariable (&cl_sidespeed);
966         Cvar_RegisterVariable (&cl_movespeedkey);
967         Cvar_RegisterVariable (&cl_yawspeed);
968         Cvar_RegisterVariable (&cl_pitchspeed);
969         Cvar_RegisterVariable (&cl_anglespeedkey);
970         Cvar_RegisterVariable (&cl_shownet);
971         Cvar_RegisterVariable (&cl_nolerp);
972         Cvar_RegisterVariable (&lookspring);
973         Cvar_RegisterVariable (&lookstrafe);
974         Cvar_RegisterVariable (&sensitivity);
975         Cvar_RegisterVariable (&freelook);
976
977         Cvar_RegisterVariable (&m_pitch);
978         Cvar_RegisterVariable (&m_yaw);
979         Cvar_RegisterVariable (&m_forward);
980         Cvar_RegisterVariable (&m_side);
981
982         Cvar_RegisterVariable (&cl_itembobspeed);
983         Cvar_RegisterVariable (&cl_itembobheight);
984
985         Cmd_AddCommand ("entities", CL_PrintEntities_f);
986         Cmd_AddCommand ("bitprofile", CL_BitProfile_f);
987         Cmd_AddCommand ("disconnect", CL_Disconnect_f);
988         Cmd_AddCommand ("record", CL_Record_f);
989         Cmd_AddCommand ("stop", CL_Stop_f);
990         Cmd_AddCommand ("playdemo", CL_PlayDemo_f);
991         Cmd_AddCommand ("timedemo", CL_TimeDemo_f);
992
993         Cmd_AddCommand ("fog", CL_Fog_f);
994
995         // LordHavoc: added pausedemo
996         Cmd_AddCommand ("pausedemo", CL_PauseDemo_f);
997         if (gamemode == GAME_NEHAHRA)
998                 Cmd_AddCommand ("pmodel", CL_PModel_f);
999
1000         Cvar_RegisterVariable(&cl_draweffects);
1001
1002         CL_Parse_Init();
1003         CL_Particles_Init();
1004         CL_Screen_Init();
1005         CL_CGVM_Init();
1006 }