diff options
Diffstat (limited to 'src/uqm/sounds.c')
| -rw-r--r-- | src/uqm/sounds.c | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/src/uqm/sounds.c b/src/uqm/sounds.c new file mode 100644 index 0000000..be14c84 --- /dev/null +++ b/src/uqm/sounds.c @@ -0,0 +1,199 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include "settings.h" +#include "sounds.h" +#include "units.h" + + +SOUND MenuSounds; +SOUND GameSounds; + +#define MAX_SOUNDS 8 +static BYTE num_sounds = 0; +static SOUND sound_buf[MAX_SOUNDS]; +static ELEMENT *sound_posobj[MAX_SOUNDS]; + +void +PlaySound (SOUND S, SoundPosition Pos, ELEMENT *PositionalObject, + BYTE Priority) +{ + BYTE chan, c; + static BYTE lru_channel[NUM_FX_CHANNELS] = {0, 1, 2, 3}; + static SOUND channel[NUM_FX_CHANNELS] = {0, 0, 0, 0}; + + if (S == 0) + return; + + for (chan = 0; chan < NUM_FX_CHANNELS; ++chan) + { + if (S == channel[chan]) + break; + } + + if (chan == NUM_FX_CHANNELS) + { + for (chan = 0; chan < NUM_FX_CHANNELS; ++chan) + { + if (!ChannelPlaying (chan + MIN_FX_CHANNEL)) + break; + } + + if (chan == NUM_FX_CHANNELS) + chan = lru_channel[0]; + } + + channel[chan] = S; + + for (c = 0; c < NUM_FX_CHANNELS - 1; ++c) + { + if (lru_channel[c] == chan) + { + memmove (&lru_channel[c], &lru_channel[c + 1], + (NUM_FX_CHANNELS - 1) - c); + break; + } + } + lru_channel[NUM_FX_CHANNELS - 1] = chan; + + PlaySoundEffect (S, chan + MIN_FX_CHANNEL, Pos, PositionalObject, Priority); +} + +void +PlayMenuSound (MENU_SOUND_EFFECT S) +{ + PlaySoundEffect (SetAbsSoundIndex (MenuSounds, S), + 0, NotPositional (), NULL, + GAME_SOUND_PRIORITY); +} + +void +ProcessSound (SOUND Sound, ELEMENT *PositionalObject) +{ + if (Sound == (SOUND)~0) + { + memset (sound_buf, 0, sizeof (sound_buf)); + memset (sound_posobj, 0, sizeof (sound_posobj)); + num_sounds = MAX_SOUNDS; + } + else if (num_sounds < MAX_SOUNDS) + { + sound_buf[num_sounds] = Sound; + sound_posobj[num_sounds++] = PositionalObject; + } +} + +SoundPosition +CalcSoundPosition (ELEMENT *ElementPtr) +{ + SoundPosition pos; + + if (ElementPtr == NULL) + { + pos.x = pos.y = 0; + pos.positional = FALSE; + } + else + { + GRAPHICS_PRIM objtype; + + objtype = GetPrimType (&DisplayArray[ElementPtr->PrimIndex]); + if (objtype == LINE_PRIM) + { + pos.x = DisplayArray[ElementPtr->PrimIndex].Object.Line.first.x; + pos.y = DisplayArray[ElementPtr->PrimIndex].Object.Line.first.y; + } + else + { + pos.x = DisplayArray[ElementPtr->PrimIndex].Object.Point.x; + pos.y = DisplayArray[ElementPtr->PrimIndex].Object.Point.y; + } + + pos.x -= (SPACE_WIDTH >> 1); + pos.y -= (SPACE_HEIGHT >> 1); + pos.positional = TRUE; + } + + return pos; +} + +SoundPosition +NotPositional (void) +{ + return CalcSoundPosition (NULL); +} + +/* Updates positional sound effects */ +void +UpdateSoundPositions (void) +{ + COUNT i; + + for (i = FIRST_SFX_CHANNEL; i <= LAST_SFX_CHANNEL; ++i) + { + ELEMENT *posobj; + if (!ChannelPlaying(i)) + continue; + + posobj = GetPositionalObject (i); + if (posobj != NULL) + { + SoundPosition pos; + pos = CalcSoundPosition (posobj); + if (pos.positional) + UpdateSoundPosition (i, pos); + } + } +} + +void +FlushSounds (void) +{ + if (num_sounds > 0) + { + SOUND *pSound; + ELEMENT **pSoundPosObj; + + pSound = sound_buf; + pSoundPosObj = sound_posobj; + do + { + SoundPosition pos = CalcSoundPosition (*pSoundPosObj); + PlaySound (*pSound++, pos, *pSoundPosObj++, + GAME_SOUND_PRIORITY); + } while (--num_sounds); + } +} + +void +RemoveSoundsForObject (ELEMENT *PosObj) +{ + int i; + + for (i = FIRST_SFX_CHANNEL; i <= LAST_SFX_CHANNEL; ++i) + { + if (GetPositionalObject (i) == PosObj) + SetPositionalObject (i, NULL); + } + + for (i = 0; i < num_sounds; ++i) + { + if (sound_posobj[i] == PosObj) + sound_posobj[i] = NULL; + } +} + + |