Go to most recent revision | Details | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
298 | serge | 1 | // Emacs style mode select -*- C++ -*- |
2 | //----------------------------------------------------------------------------- |
||
3 | // |
||
4 | // $Id:$ |
||
5 | // |
||
6 | // Copyright (C) 1993-1996 by id Software, Inc. |
||
7 | // |
||
8 | // This source is available for distribution and/or modification |
||
9 | // only under the terms of the DOOM Source Code License as |
||
10 | // published by id Software. All rights reserved. |
||
11 | // |
||
12 | // The source is distributed in the hope that it will be useful, |
||
13 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
||
14 | // FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License |
||
15 | // for more details. |
||
16 | // |
||
17 | // $Log:$ |
||
18 | // |
||
19 | // DESCRIPTION: none |
||
20 | // |
||
21 | //----------------------------------------------------------------------------- |
||
22 | |||
23 | |||
24 | static const char |
||
25 | rcsid[] = "$Id: s_sound.c,v 1.6 1997/02/03 22:45:12 b1 Exp $"; |
||
26 | |||
27 | |||
28 | #include |
||
29 | #include |
||
30 | |||
31 | #include "i_system.h" |
||
32 | #include "i_sound.h" |
||
33 | #include "sounds.h" |
||
34 | #include "s_sound.h" |
||
35 | |||
36 | #include "z_zone.h" |
||
37 | #include "m_random.h" |
||
38 | #include "w_wad.h" |
||
39 | |||
40 | #include "doomdef.h" |
||
41 | #include "p_local.h" |
||
42 | //#include "m_music.h" |
||
43 | |||
44 | #include "doomstat.h" |
||
45 | |||
46 | //#include "qmus2mid.h" |
||
47 | |||
48 | void WriteDebug(char *); |
||
49 | |||
50 | // Purpose? |
||
51 | const char snd_prefixen[] |
||
52 | = { 'P', 'P', 'A', 'S', 'S', 'S', 'M', 'M', 'M', 'S', 'S', 'S' }; |
||
53 | |||
54 | #define S_MAX_VOLUME 127 |
||
55 | |||
56 | // when to clip out sounds |
||
57 | // Does not fit the large outdoor areas. |
||
58 | #define S_CLIPPING_DIST (1200*0x10000) |
||
59 | |||
60 | // Distance tp origin when sounds should be maxed out. |
||
61 | // This should relate to movement clipping resolution |
||
62 | // (see BLOCKMAP handling). |
||
63 | // Originally: (200*0x10000). |
||
64 | #define S_CLOSE_DIST (160*0x10000) |
||
65 | |||
66 | |||
67 | #define S_ATTENUATOR ((S_CLIPPING_DIST-S_CLOSE_DIST)>>FRACBITS) |
||
68 | |||
69 | // Adjustable by menu. |
||
70 | #define NORM_VOLUME snd_MaxVolume |
||
71 | |||
72 | #define NORM_PITCH 128 |
||
73 | #define NORM_PRIORITY 64 |
||
74 | #define NORM_SEP 128 |
||
75 | |||
76 | #define S_PITCH_PERTURB 1 |
||
77 | #define S_STEREO_SWING (96*0x10000) |
||
78 | |||
79 | // percent attenuation from front to back |
||
80 | #define S_IFRACVOL 30 |
||
81 | |||
82 | #define NA 0 |
||
83 | //#define S_NUMCHANNELS 2 |
||
84 | #define NUM_CHANNELS 16 |
||
85 | |||
86 | // Current music/sfx card - index useless |
||
87 | // w/o a reference LUT in a sound module. |
||
88 | extern int snd_MusicDevice; |
||
89 | extern int snd_SfxDevice; |
||
90 | // Config file? Same disclaimer as above. |
||
91 | extern int snd_DesiredMusicDevice; |
||
92 | extern int snd_DesiredSfxDevice; |
||
93 | |||
94 | |||
95 | typedef struct |
||
96 | { |
||
97 | // sound information (if null, channel avail.) |
||
98 | sfxinfo_t* sfxinfo; |
||
99 | |||
100 | // origin of sound |
||
101 | void* origin; |
||
102 | |||
103 | // handle of the sound being played |
||
104 | int handle; |
||
105 | |||
106 | } channel_t; |
||
107 | |||
108 | |||
109 | // the set of channels available |
||
110 | static channel_t* channels; |
||
111 | |||
112 | // These are not used, but should be (menu). |
||
113 | // Maximum volume of a sound effect. |
||
114 | // Internal default is max out of 0-15. |
||
115 | int snd_SfxVolume = 80; |
||
116 | |||
117 | // Maximum volume of music. Useless so far. |
||
118 | int snd_MusicVolume = 80; |
||
119 | |||
120 | |||
121 | |||
122 | // whether songs are mus_paused |
||
123 | static boolean mus_paused; |
||
124 | |||
125 | // music currently being played |
||
126 | static musicinfo_t* mus_playing=0; |
||
127 | |||
128 | // following is set |
||
129 | // by the defaults code in M_misc: |
||
130 | // number of channels available |
||
131 | int numChannels; |
||
132 | |||
133 | static int nextcleanup; |
||
134 | |||
135 | |||
136 | |||
137 | // |
||
138 | // Internals. |
||
139 | // |
||
140 | int |
||
141 | S_getChannel |
||
142 | ( void* origin, |
||
143 | sfxinfo_t* sfxinfo, |
||
144 | int sfxid ); |
||
145 | |||
146 | |||
147 | int |
||
148 | S_AdjustSoundParams |
||
149 | ( mobj_t* listener, |
||
150 | mobj_t* source, |
||
151 | int* vol, |
||
152 | int* sep, |
||
153 | int* pitch ); |
||
154 | |||
155 | void S_StopChannel(int cnum); |
||
156 | |||
157 | |||
158 | |||
159 | // |
||
160 | // Initializes sound stuff, including volume |
||
161 | // Sets channels, SFX and music volume, |
||
162 | // allocates channel buffer, sets S_sfx lookup. |
||
163 | // |
||
164 | void S_Init |
||
165 | ( int sfxVolume, |
||
166 | int musicVolume ) |
||
167 | { |
||
168 | int i; |
||
169 | |||
170 | printf("S_Init: default sfx volume %d\n", sfxVolume); |
||
171 | |||
172 | I_CreateSound(); |
||
173 | numChannels = NUM_CHANNELS; |
||
174 | |||
175 | // Whatever these did with DMX, these are rather dummies now. |
||
176 | I_SetChannels(); |
||
177 | |||
178 | S_SetSfxVolume(sfxVolume); |
||
179 | // No music with Linux - another dummy. |
||
180 | S_SetMusicVolume(musicVolume); |
||
181 | |||
182 | // Allocating the internal channels for mixing |
||
183 | // (the maximum numer of sounds rendered |
||
184 | // simultaneously) within zone memory. |
||
185 | channels = |
||
186 | (channel_t *) Z_Malloc(numChannels*sizeof(channel_t), PU_STATIC, 0); |
||
187 | |||
188 | // Free all channels for use |
||
189 | for (i=0 ; i |
||
190 | channels[i].sfxinfo = 0; |
||
191 | |||
192 | // no sounds are playing, and they are not mus_paused |
||
193 | mus_paused = 0; |
||
194 | |||
195 | // Note that sounds have not been cached (yet). |
||
196 | for (i=1 ; i |
||
197 | S_sfx[i].lumpnum = S_sfx[i].usefulness = -1; |
||
198 | } |
||
199 | |||
200 | // |
||
201 | // Per level startup code. |
||
202 | // Kills playing sounds at start of level, |
||
203 | // determines music if any, changes music. |
||
204 | // |
||
205 | void S_Start(void) |
||
206 | { |
||
207 | int cnum; |
||
208 | int mnum; |
||
209 | |||
210 | // kill all playing sounds at start of level |
||
211 | // (trust me - a good idea) |
||
212 | for (cnum=0 ; cnum |
||
213 | if (channels[cnum].sfxinfo) |
||
214 | S_StopChannel(cnum); |
||
215 | |||
216 | // start new music for the level |
||
217 | mus_paused = 0; |
||
218 | |||
219 | if (gamemode == commercial) |
||
220 | mnum = mus_runnin + gamemap - 1; |
||
221 | else |
||
222 | { |
||
223 | int spmus[]= |
||
224 | { |
||
225 | // Song - Who? - Where? |
||
226 | mus_e3m4, // American e4m1 |
||
227 | mus_e3m2, // Romero e4m2 |
||
228 | mus_e3m3, // Shawn e4m3 |
||
229 | mus_e1m5, // American e4m4 |
||
230 | mus_e2m7, // Tim e4m5 |
||
231 | mus_e2m4, // Romero e4m6 |
||
232 | mus_e2m6, // J.Anderson e4m7 CHIRON.WAD |
||
233 | mus_e2m5, // Shawn e4m8 |
||
234 | mus_e1m9 // Tim e4m9 |
||
235 | }; |
||
236 | |||
237 | if (gameepisode < 4) |
||
238 | mnum = mus_e1m1 + (gameepisode-1)*9 + gamemap-1; |
||
239 | else |
||
240 | mnum = spmus[gamemap-1]; |
||
241 | } |
||
242 | |||
243 | // HACK FOR COMMERCIAL |
||
244 | // if (commercial && mnum > mus_e3m9) |
||
245 | // mnum -= mus_e3m9; |
||
246 | |||
247 | S_ChangeMusic(mnum, true); |
||
248 | |||
249 | nextcleanup = 15; |
||
250 | } |
||
251 | |||
252 | void S_StartSoundAtVolume( void *origin_p, int sfx_id, int volume ) |
||
253 | { |
||
254 | int rc; |
||
255 | int sep; |
||
256 | int pitch; |
||
257 | int priority; |
||
258 | sfxinfo_t *sfx; |
||
259 | int cnum; |
||
260 | // int chnum; <-- 10.9.98 compiler warning |
||
261 | |||
262 | mobj_t* origin = (mobj_t *)origin_p; |
||
263 | |||
264 | //WriteDebug("S_StartSoundAtVolume...\n"); |
||
265 | |||
266 | // Debug. |
||
267 | /*fprintf( stderr,"S_StartSoundAtVolume: playing sound %d (%s)\n",sfx_id, S_sfx[sfx_id].name );*/ |
||
268 | |||
269 | // check for bogus sound # |
||
270 | if (sfx_id < 1 || sfx_id > NUMSFX) |
||
271 | I_Error("Bad sfx #: %d", sfx_id); |
||
272 | |||
273 | sfx = &S_sfx[sfx_id]; |
||
274 | |||
275 | // Initialize sound parameters |
||
276 | if (sfx->link) |
||
277 | { |
||
278 | pitch = sfx->pitch; |
||
279 | priority = sfx->priority; |
||
280 | volume += sfx->volume; |
||
281 | |||
282 | if (volume < 1) |
||
283 | { |
||
284 | //WriteDebug("Volume off...\n"); |
||
285 | return; |
||
286 | } |
||
287 | |||
288 | if (volume > snd_SfxVolume) |
||
289 | volume = snd_SfxVolume; |
||
290 | } |
||
291 | else |
||
292 | { |
||
293 | pitch = NORM_PITCH; |
||
294 | priority = NORM_PRIORITY; |
||
295 | } |
||
296 | |||
297 | |||
298 | // Check to see if it is audible, |
||
299 | // and if not, modify the params |
||
300 | if (origin && origin != players[consoleplayer].mo) |
||
301 | { |
||
302 | rc = S_AdjustSoundParams(players[consoleplayer].mo, origin, &volume, &sep, &pitch); |
||
303 | if ( origin->x == players[consoleplayer].mo->x && origin->y == players[consoleplayer].mo->y) |
||
304 | { |
||
305 | sep = NORM_SEP; |
||
306 | } |
||
307 | if (!rc) |
||
308 | { |
||
309 | //WriteDebug("No rc from S_AdjustSoundParams...\n"); |
||
310 | return; |
||
311 | } |
||
312 | } |
||
313 | else |
||
314 | { |
||
315 | sep = NORM_SEP; |
||
316 | } |
||
317 | |||
318 | // hacks to vary the sfx pitches |
||
319 | if (sfx_id >= sfx_sawup && sfx_id <= sfx_sawhit) |
||
320 | { |
||
321 | pitch += 8 - (M_Random()&15); |
||
322 | if (pitch < 0) |
||
323 | pitch = 0; |
||
324 | else |
||
325 | if (pitch>255) |
||
326 | pitch = 255; |
||
327 | } |
||
328 | else |
||
329 | if (sfx_id != sfx_itemup && sfx_id != sfx_tink) |
||
330 | { |
||
331 | pitch += 16 - (M_Random()&31); |
||
332 | if (pitch<0) |
||
333 | pitch = 0; |
||
334 | else |
||
335 | if (pitch > 255) |
||
336 | pitch = 255; |
||
337 | } |
||
338 | |||
339 | // kill old sound |
||
340 | S_StopSound(origin); |
||
341 | |||
342 | // try to find a channel |
||
343 | cnum = S_getChannel(origin, sfx, sfx_id); |
||
344 | |||
345 | if (cnum<0) |
||
346 | { |
||
347 | //WriteDebug("cnum < 0 -- no channel...\n"); |
||
348 | return; |
||
349 | } |
||
350 | |||
351 | // |
||
352 | // This is supposed to handle the loading/caching. |
||
353 | // For some odd reason, the caching is done nearly |
||
354 | // each time the sound is needed? |
||
355 | // |
||
356 | |||
357 | // get lumpnum if necessary |
||
358 | if (sfx->lumpnum < 0) |
||
359 | sfx->lumpnum = I_GetSfxLumpNum(sfx); |
||
360 | |||
361 | // cache data if necessary |
||
362 | if (!sfx->data) |
||
363 | { |
||
364 | sfx->data = (void *) W_CacheLumpNum(sfx->lumpnum, PU_MUSIC); |
||
365 | |||
366 | } |
||
367 | |||
368 | // increase the usefulness |
||
369 | if (sfx->usefulness++ < 0) |
||
370 | sfx->usefulness = 1; |
||
371 | |||
372 | // Assigns the handle to one of the channels in the |
||
373 | // mix/output buffer. |
||
374 | //WriteDebug("I_StartSound...\n"); |
||
375 | channels[cnum].handle = I_StartSound(sfx_id,/*sfx->data,*/volume,sep,pitch,priority,origin); |
||
376 | //cnum = I_StartSound(sfx_id,/*sfx->data,*/volume,sep,pitch,priority,origin); |
||
377 | channels[cnum].handle = cnum; |
||
378 | channels[cnum].sfxinfo = sfx; |
||
379 | channels[cnum].origin = origin; |
||
380 | } |
||
381 | |||
382 | void S_StartSound( void *origin, int sfx_id ) |
||
383 | { |
||
384 | #ifdef SAWDEBUG |
||
385 | // if (sfx_id == sfx_sawful) |
||
386 | // sfx_id = sfx_itemup; |
||
387 | #endif |
||
388 | |||
389 | S_StartSoundAtVolume(origin, sfx_id, snd_SfxVolume); |
||
390 | |||
391 | |||
392 | // UNUSED. We had problems, had we not? |
||
393 | #ifdef SAWDEBUG |
||
394 | { |
||
395 | int i; |
||
396 | int n; |
||
397 | |||
398 | static mobj_t* last_saw_origins[10] = {1,1,1,1,1,1,1,1,1,1}; |
||
399 | static int first_saw=0; |
||
400 | static int next_saw=0; |
||
401 | |||
402 | if (sfx_id == sfx_sawidl |
||
403 | || sfx_id == sfx_sawful |
||
404 | || sfx_id == sfx_sawhit) |
||
405 | { |
||
406 | for (i=first_saw;i!=next_saw;i=(i+1)%10) |
||
407 | if (last_saw_origins[i] != origin) |
||
408 | fprintf(stderr, "old origin 0x%lx != " |
||
409 | "origin 0x%lx for sfx %d\n", |
||
410 | last_saw_origins[i], |
||
411 | origin, |
||
412 | sfx_id); |
||
413 | |||
414 | last_saw_origins[next_saw] = origin; |
||
415 | next_saw = (next_saw + 1) % 10; |
||
416 | if (next_saw == first_saw) |
||
417 | first_saw = (first_saw + 1) % 10; |
||
418 | |||
419 | for (n=i=0; i |
||
420 | { |
||
421 | if (channels[i].sfxinfo == &S_sfx[sfx_sawidl] |
||
422 | || channels[i].sfxinfo == &S_sfx[sfx_sawful] |
||
423 | || channels[i].sfxinfo == &S_sfx[sfx_sawhit]) n++; |
||
424 | } |
||
425 | |||
426 | if (n>1) |
||
427 | { |
||
428 | for (i=0; i |
||
429 | { |
||
430 | if (channels[i].sfxinfo == &S_sfx[sfx_sawidl] |
||
431 | || channels[i].sfxinfo == &S_sfx[sfx_sawful] |
||
432 | || channels[i].sfxinfo == &S_sfx[sfx_sawhit]) |
||
433 | { |
||
434 | fprintf(stderr, |
||
435 | "chn: sfxinfo=0x%lx, origin=0x%lx, " |
||
436 | "handle=%d\n", |
||
437 | channels[i].sfxinfo, |
||
438 | channels[i].origin, |
||
439 | channels[i].handle); |
||
440 | } |
||
441 | } |
||
442 | fprintf(stderr, "\n"); |
||
443 | } |
||
444 | } |
||
445 | } |
||
446 | #endif |
||
447 | |||
448 | } |
||
449 | |||
450 | |||
451 | |||
452 | |||
453 | void S_StopSound(void *origin) |
||
454 | { |
||
455 | |||
456 | int cnum; |
||
457 | |||
458 | for (cnum=0 ; cnum |
||
459 | { |
||
460 | if (channels[cnum].sfxinfo && channels[cnum].origin == origin) |
||
461 | { |
||
462 | S_StopChannel(cnum); |
||
463 | break; |
||
464 | } |
||
465 | } |
||
466 | } |
||
467 | |||
468 | |||
469 | |||
470 | |||
471 | |||
472 | |||
473 | |||
474 | |||
475 | |||
476 | // |
||
477 | // Stop and resume music, during game PAUSE. |
||
478 | // |
||
479 | void S_PauseSound(void) |
||
480 | { |
||
481 | if (mus_playing && !mus_paused) |
||
482 | { |
||
483 | I_PauseSong(mus_playing->handle); |
||
484 | mus_paused = true; |
||
485 | } |
||
486 | } |
||
487 | |||
488 | void S_ResumeSound(void) |
||
489 | { |
||
490 | if (mus_playing && mus_paused) |
||
491 | { |
||
492 | I_ResumeSong(mus_playing->handle); |
||
493 | mus_paused = false; |
||
494 | } |
||
495 | } |
||
496 | |||
497 | |||
498 | // |
||
499 | // Updates music & sounds |
||
500 | // |
||
501 | void S_UpdateSounds(void* listener_p) |
||
502 | { |
||
503 | int audible; |
||
504 | int cnum; |
||
505 | int volume; |
||
506 | int sep; |
||
507 | int pitch; |
||
508 | sfxinfo_t* sfx; |
||
509 | channel_t* c; |
||
510 | |||
511 | mobj_t* listener = (mobj_t*)listener_p; |
||
512 | |||
513 | |||
514 | |||
515 | // Clean up unused data. |
||
516 | // This is currently not done for 16bit (sounds cached static). |
||
517 | // DOS 8bit remains. |
||
518 | /*if (gametic > nextcleanup) |
||
519 | { |
||
520 | for (i=1 ; i |
||
521 | { |
||
522 | if (S_sfx[i].usefulness < 1 |
||
523 | && S_sfx[i].usefulness > -1) |
||
524 | { |
||
525 | if (--S_sfx[i].usefulness == -1) |
||
526 | { |
||
527 | Z_ChangeTag(S_sfx[i].data, PU_CACHE); |
||
528 | S_sfx[i].data = 0; |
||
529 | } |
||
530 | } |
||
531 | } |
||
532 | nextcleanup = gametic + 15; |
||
533 | }*/ |
||
534 | |||
535 | for (cnum=0 ; cnum |
||
536 | { |
||
537 | c = &channels[cnum]; |
||
538 | sfx = c->sfxinfo; |
||
539 | |||
540 | if (c->sfxinfo) |
||
541 | { |
||
542 | if (I_SoundIsPlaying(c->handle)) |
||
543 | { |
||
544 | // initialize parameters |
||
545 | volume = snd_SfxVolume; |
||
546 | pitch = NORM_PITCH; |
||
547 | sep = NORM_SEP; |
||
548 | |||
549 | if (sfx->link) |
||
550 | { |
||
551 | pitch = sfx->pitch; |
||
552 | volume += sfx->volume; |
||
553 | if (volume < 1) |
||
554 | { |
||
555 | S_StopChannel(cnum); |
||
556 | continue; |
||
557 | } |
||
558 | else if (volume > snd_SfxVolume) |
||
559 | { |
||
560 | volume = snd_SfxVolume; |
||
561 | } |
||
562 | } |
||
563 | |||
564 | // check non-local sounds for distance clipping |
||
565 | // or modify their params |
||
566 | if (c->origin && listener_p != c->origin) |
||
567 | { |
||
568 | audible = S_AdjustSoundParams(listener, |
||
569 | c->origin, |
||
570 | &volume, |
||
571 | &sep, |
||
572 | &pitch); |
||
573 | |||
574 | if (!audible) |
||
575 | { |
||
576 | S_StopChannel(cnum); |
||
577 | } |
||
578 | else |
||
579 | I_UpdateSoundParams(c->handle, volume, sep, pitch); |
||
580 | } |
||
581 | } |
||
582 | else |
||
583 | { |
||
584 | // if channel is allocated but sound has stopped, |
||
585 | // free it |
||
586 | S_StopChannel(cnum); |
||
587 | } |
||
588 | } |
||
589 | } |
||
590 | // kill music if it is a single-play && finished |
||
591 | // if ( mus_playing |
||
592 | // && !I_QrySongPlaying(mus_playing->handle) |
||
593 | // && !mus_paused ) |
||
594 | // S_StopMusic(); |
||
595 | } |
||
596 | |||
597 | |||
598 | void S_SetMusicVolume(int volume) |
||
599 | { |
||
600 | if (volume < 0 || volume > 127) |
||
601 | { |
||
602 | I_Error("Attempt to set music volume at %d", |
||
603 | volume); |
||
604 | } |
||
605 | |||
606 | I_SetMusicVolume(127); |
||
607 | I_SetMusicVolume(volume); |
||
608 | snd_MusicVolume = volume; |
||
609 | } |
||
610 | |||
611 | |||
612 | |||
613 | void S_SetSfxVolume(int volume) |
||
614 | { |
||
615 | |||
616 | if (volume < 0 || volume > 127) |
||
617 | I_Error("Attempt to set sfx volume at %d", volume); |
||
618 | |||
619 | snd_SfxVolume = volume; |
||
620 | |||
621 | } |
||
622 | |||
623 | // |
||
624 | // Starts some music with the music id found in sounds.h. |
||
625 | // |
||
626 | void S_StartMusic(int m_id) |
||
627 | { |
||
628 | // S_ChangeMusic(m_id, false); |
||
629 | } |
||
630 | |||
631 | |||
632 | // clean-up&code for orig midi 10.9.98-dlw |
||
633 | void S_ChangeMusic(int musicnum, int looping) |
||
634 | { |
||
635 | |||
636 | // I_PlaySong(music->handle, looping); |
||
637 | // mus_playing = music; |
||
638 | } |
||
639 | |||
640 | |||
641 | void S_StopMusic(void) |
||
642 | { |
||
643 | if (mus_playing) |
||
644 | { |
||
645 | if (mus_paused) I_ResumeSong(mus_playing->handle); |
||
646 | I_StopSong(mus_playing->handle); |
||
647 | I_UnRegisterSong(mus_playing->handle); |
||
648 | Z_ChangeTag(mus_playing->data, PU_CACHE); |
||
649 | mus_playing->data = 0; |
||
650 | mus_playing = 0; |
||
651 | } |
||
652 | } |
||
653 | |||
654 | void S_StopChannel(int cnum) |
||
655 | { |
||
656 | |||
657 | int i; |
||
658 | channel_t* c = &channels[cnum]; |
||
659 | |||
660 | if (c->sfxinfo) |
||
661 | { |
||
662 | // stop the sound playing |
||
663 | if (I_SoundIsPlaying(c->handle)) |
||
664 | { |
||
665 | #ifdef SAWDEBUG |
||
666 | if (c->sfxinfo == &S_sfx[sfx_sawful]) |
||
667 | fprintf(stderr, "stopped\n"); |
||
668 | #endif |
||
669 | I_StopSound(c->handle); |
||
670 | } |
||
671 | |||
672 | // check to see |
||
673 | // if other channels are playing the sound |
||
674 | for (i=0 ; i |
||
675 | { |
||
676 | if (cnum != i |
||
677 | && c->sfxinfo == channels[i].sfxinfo) |
||
678 | { |
||
679 | break; |
||
680 | } |
||
681 | } |
||
682 | |||
683 | // degrade usefulness of sound data |
||
684 | c->sfxinfo->usefulness--; |
||
685 | |||
686 | c->sfxinfo = 0; |
||
687 | } |
||
688 | } |
||
689 | |||
690 | |||
691 | // |
||
692 | // Changes volume, stereo-separation, and pitch variables |
||
693 | // from the norm of a sound effect to be played. |
||
694 | // If the sound is not audible, returns a 0. |
||
695 | // Otherwise, modifies parameters and returns 1. |
||
696 | // |
||
697 | int |
||
698 | S_AdjustSoundParams (mobj_t* listener, mobj_t* source, |
||
699 | int* vol, int* sep, int* pitch) |
||
700 | { |
||
701 | fixed_t approx_dist; |
||
702 | fixed_t adx; |
||
703 | fixed_t ady; |
||
704 | angle_t angle; |
||
705 | |||
706 | // calculate the distance to sound origin |
||
707 | // and clip it if necessary |
||
708 | adx = abs(listener->x - source->x); |
||
709 | ady = abs(listener->y - source->y); |
||
710 | |||
711 | // From _GG1_ p.428. Appox. eucledian distance fast. |
||
712 | approx_dist = adx + ady - ((adx < ady ? adx : ady)>>1); |
||
713 | |||
714 | if (gamemap != 8 |
||
715 | && approx_dist > S_CLIPPING_DIST) |
||
716 | { |
||
717 | return 0; |
||
718 | } |
||
719 | |||
720 | // angle of source to listener |
||
721 | angle = R_PointToAngle2(listener->x, |
||
722 | listener->y, |
||
723 | source->x, |
||
724 | source->y); |
||
725 | |||
726 | if (angle > listener->angle) |
||
727 | angle = angle - listener->angle; |
||
728 | else |
||
729 | angle = angle + (0xffffffff - listener->angle); |
||
730 | |||
731 | angle >>= ANGLETOFINESHIFT; |
||
732 | |||
733 | // stereo separation |
||
734 | *sep = 128 - (FixedMul(S_STEREO_SWING,finesine[angle])>>FRACBITS); |
||
735 | |||
736 | // volume calculation |
||
737 | if (approx_dist < S_CLOSE_DIST) |
||
738 | { |
||
739 | *vol = snd_SfxVolume; |
||
740 | } |
||
741 | else if (gamemap == 8) |
||
742 | { |
||
743 | if (approx_dist > S_CLIPPING_DIST) |
||
744 | approx_dist = S_CLIPPING_DIST; |
||
745 | |||
746 | *vol = 15+ ((snd_SfxVolume-15) |
||
747 | *((S_CLIPPING_DIST - approx_dist)>>FRACBITS)) |
||
748 | / S_ATTENUATOR; |
||
749 | } |
||
750 | else |
||
751 | { |
||
752 | // distance effect |
||
753 | *vol = (snd_SfxVolume |
||
754 | * ((S_CLIPPING_DIST - approx_dist)>>FRACBITS)) |
||
755 | / S_ATTENUATOR; |
||
756 | } |
||
757 | |||
758 | return (*vol > 0); |
||
759 | } |
||
760 | |||
761 | // |
||
762 | // S_getChannel : |
||
763 | // If none available, return -1. Otherwise channel #. |
||
764 | // |
||
765 | int S_getChannel( void *origin, sfxinfo_t *sfxinfo, int sfxid ) |
||
766 | { |
||
767 | // channel number to use |
||
768 | int cnum; |
||
769 | |||
770 | channel_t* c; |
||
771 | |||
772 | // Find an open channel |
||
773 | //for (cnum = 0; cnum < numChannels; cnum++) |
||
774 | for (cnum = 0; cnum < NUM_CHANNELS; cnum++) |
||
775 | { |
||
776 | if (!channels[cnum].sfxinfo) |
||
777 | break; |
||
778 | else |
||
779 | if (origin && channels[cnum].origin == origin) |
||
780 | { |
||
781 | S_StopChannel(cnum); |
||
782 | break; |
||
783 | } |
||
784 | } |
||
785 | |||
786 | // None available |
||
787 | if (cnum == NUM_CHANNELS) |
||
788 | { |
||
789 | // Look for lower priority |
||
790 | for (cnum = NUMSFX; cnum < NUM_CHANNELS; cnum++) |
||
791 | if (channels[cnum].sfxinfo->priority >= sfxinfo->priority) |
||
792 | break; |
||
793 | |||
794 | if (cnum == numChannels) |
||
795 | { |
||
796 | // FUCK! No lower priority. Sorry, Charlie. |
||
797 | return -1; |
||
798 | } |
||
799 | else |
||
800 | { |
||
801 | // Otherwise, kick out lower priority. |
||
802 | S_StopChannel(cnum); |
||
803 | } |
||
804 | } |
||
805 | |||
806 | c = &channels[cnum]; |
||
807 | |||
808 | // channel is decided to be cnum. |
||
809 | c->sfxinfo = sfxinfo; |
||
810 | c->origin = origin; |
||
811 | |||
812 | return cnum; |
||
813 | }>>>>>>>>>>>>0) |
||
814 | |||
815 | |||
816 |