drummyfish/Licar
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Continue crash sound

Browse source
This commit is contained in:
Miloslav Ciz 2024-12-27 07:45:27 +01:00
parent b90f5bbfc8
commit 85b8b1352d
3 changed files with 65 additions and 64 deletions
Download patch file Download diff file Expand all files Collapse all files

88
audio.h
View file

@ -18,24 +18,32 @@ struct
{
uint32_t frame;
uint8_t soundPlayed;
uint16_t soundPlayedSample;
uint16_t soundPlayedFrame;
uint32_t noise;
uint8_t crashSample;
int engineIntensity;
int engineOsc;
int engineInc;
} LCR_audio;
void LCR_audioInit(void)
{
LCR_LOG0("initializing audio");
LCR_audio.frame = 0;
LCR_audio.soundPlayed = LCR_SOUND_NONE;
LCR_audio.soundPlayedSample = 0;
LCR_audio.soundPlayedFrame = 0;
LCR_audio.noise = 0;
LCR_audio.crashSample = 0;
LCR_audio.engineOsc = 0;
LCR_audio.engineInc = 1;
@ -54,7 +62,7 @@ void LCR_audioPlaySound(uint8_t sound)
{
LCR_LOG2("playing sound");
LCR_audio.soundPlayed = sound;
LCR_audio.soundPlayedSample = 0;
LCR_audio.soundPlayedFrame = 0;
}
uint8_t _LCR_audioNoise(void)
@ -63,60 +71,60 @@ uint8_t _LCR_audioNoise(void)
return LCR_audio.noise >> 16;
}
uint8_t LCR_audioGetNextSample(void)
{
unsigned char result = 128;
switch (LCR_audio.soundPlayed)
{
case LCR_SOUND_CRASH_SMALL:
result += (LCR_AUDIO_CRASH_LEN - LCR_audio.soundPlayedSample) *
(_LCR_audioNoise() / 16) / LCR_AUDIO_CRASH_LEN;
switch (LCR_audio.soundPlayed)
{
case LCR_SOUND_CRASH_SMALL:
case LCR_SOUND_CRASH_BIG:
{
int limit = (LCR_audio.soundPlayed == LCR_SOUND_CRASH_BIG ? 256 : 128) -
(LCR_audio.soundPlayedFrame * 256) / LCR_AUDIO_CRASH_LEN;
if (LCR_audio.soundPlayedSample >= LCR_AUDIO_CRASH_LEN)
LCR_audio.soundPlayed = LCR_SOUND_NONE;
if (LCR_audio.frame % 2 || // lower frequency
LCR_audio.soundPlayedFrame < LCR_AUDIO_CRASH_LEN / 4)
LCR_audio.crashSample = _LCR_audioNoise();
break;
if (LCR_audio.crashSample > limit)
LCR_audio.crashSample = (_LCR_audioNoise() % 2) ? 0 : limit;
case LCR_SOUND_CRASH_BIG:
result += ((LCR_AUDIO_CRASH_LEN * 2) - LCR_audio.soundPlayedSample) *
(_LCR_audioNoise() / 8) / (2 * LCR_AUDIO_CRASH_LEN);
result += LCR_audio.crashSample - limit / 2;
if (LCR_audio.soundPlayedSample >= 2 * LCR_AUDIO_CRASH_LEN)
LCR_audio.soundPlayed = LCR_SOUND_NONE;
if (limit == 0)
LCR_audio.soundPlayed = LCR_SOUND_NONE;
break;
break;
}
default:
break;
}
default:
break;
}
if (LCR_audio.soundPlayed != LCR_SOUND_NONE)
LCR_audio.soundPlayedSample++;
else
{
LCR_audio.engineOsc +=
LCR_audio.engineInc ?
(((_LCR_audioNoise() % 256) <
(10 + LCR_audio.engineIntensity))) : -31;
if (LCR_audio.soundPlayed != LCR_SOUND_NONE)
LCR_audio.soundPlayedFrame++;
else
{
LCR_audio.engineOsc +=
LCR_audio.engineInc ?
(((_LCR_audioNoise() % 256) <
(10 + LCR_audio.engineIntensity))) : -31;
if (LCR_audio.engineInc && LCR_audio.engineOsc >
(90 + (LCR_audio.engineIntensity / 8)))
LCR_audio.engineInc = 0;
else if ((!LCR_audio.engineInc) && LCR_audio.engineOsc < 10)
LCR_audio.engineInc = 1;
if (LCR_audio.engineInc && LCR_audio.engineOsc >
(90 + (LCR_audio.engineIntensity / 8)))
LCR_audio.engineInc = 0;
else if ((!LCR_audio.engineInc) && LCR_audio.engineOsc < 10)
LCR_audio.engineInc = 1;
result +=
LCR_audio.engineIntensity < 20 ?
LCR_audio.engineOsc / 2 : LCR_audio.engineOsc;
}
result +=
LCR_audio.engineIntensity < 20 ?
LCR_audio.engineOsc / 2 : LCR_audio.engineOsc;
}
LCR_audio.frame++;
return result;
}
#endif // guard