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mixer: stream lamp

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minjaesong
2023-11-19 02:22:15 +09:00
parent 19315ac6e8
commit 574c2e6745
3 changed files with 32 additions and 13 deletions
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36
src/net/torvald/terrarum/audio/AudioMixer.kt
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@@ -21,7 +21,7 @@ import kotlin.math.pow
* Created by minjaesong on 2023-11-07.
*/
object AudioMixer: Disposable {
const val DEFAULT_FADEOUT_LEN = 2.4
const val DEFAULT_FADEOUT_LEN = 1.8
/** Returns a master volume */
val masterVolume: Double
@@ -54,12 +54,20 @@ object AudioMixer: Disposable {
get() = tracks[0]
val ambientTrack: TerrarumAudioMixerTrack
get() = tracks[1]
val sfxMixTrack: TerrarumAudioMixerTrack
get() = tracks[2]
val guiTrack: TerrarumAudioMixerTrack
get() = tracks[3]
init {
musicTrack.filters[0] = Lowpass(48000f, TerrarumAudioMixerTrack.SAMPLING_RATE)
ambientTrack.filters[0] = Lowpass(48000f, TerrarumAudioMixerTrack.SAMPLING_RATE)
sfxMixTrack.filters[0] = Lowpass(48000f, TerrarumAudioMixerTrack.SAMPLING_RATE)
}
val faderTrack = arrayOf(musicTrack, ambientTrack, sfxMixTrack)
private var fadeAkku = 0.0
private var fadeLength = DEFAULT_FADEOUT_LEN
private var fadeoutFired = false
@@ -83,27 +91,30 @@ object AudioMixer: Disposable {
if (fadeoutFired) {
fadeAkku += delta
val step = fadeAkku / fadeLength
musicTrack.volume = FastMath.interpolateLinear(step, fadeStart, fadeTarget)
faderTrack.forEach { it.volume = FastMath.interpolateLinear(step, fadeStart, fadeTarget) }
if (fadeAkku >= fadeLength) {
fadeoutFired = false
musicTrack.volume = fadeTarget
faderTrack.forEach { it.volume = fadeTarget }
if (fadeTarget == 0.0)
if (fadeTarget == 0.0) {
musicTrack.currentTrack = null
ambientTrack.currentTrack = null
}
}
}
else if (fadeinFired) {
fadeAkku += delta
val step = fadeAkku / fadeLength
musicTrack.volume = FastMath.interpolateLinear(step, fadeStart, fadeTarget)
faderTrack.forEach { it.volume = FastMath.interpolateLinear(step, fadeStart, fadeTarget) }
if (musicTrack.isPlaying == false) {
musicTrack.play()
}
// if (musicTrack.isPlaying == false) {
// musicTrack.play()
// }
if (fadeAkku >= fadeLength) {
musicTrack.volume = fadeTarget
faderTrack.forEach { it.volume = fadeTarget }
fadeinFired = false
}
}
@@ -115,11 +126,12 @@ object AudioMixer: Disposable {
val q = 400.0
val step = (q.pow(x) - 1) / (q - 1) // https://www.desmos.com/calculator/sttaq2qhzm
val cutoff = FastMath.interpolateLinear(step, SAMPLING_RATED / 100.0, SAMPLING_RATED)
(musicTrack.filters[0] as Lowpass).setCutoff(cutoff)
faderTrack.forEach { (it.filters[0] as Lowpass).setCutoff(cutoff) }
if (lpAkku >= lpLength) {
lpOutFired = false
(musicTrack.filters[0] as Lowpass).setCutoff(SAMPLING_RATEF)
faderTrack.forEach { (it.filters[0] as Lowpass).setCutoff(SAMPLING_RATEF) }
}
}
else if (lpInFired) {
@@ -128,10 +140,10 @@ object AudioMixer: Disposable {
val q = 400.0
val step = log((q-1) * x + 1.0, q) // https://www.desmos.com/calculator/sttaq2qhzm
val cutoff = FastMath.interpolateLinear(step, SAMPLING_RATED, SAMPLING_RATED / 100.0)
(musicTrack.filters[0] as Lowpass).setCutoff(cutoff)
faderTrack.forEach { (it.filters[0] as Lowpass).setCutoff(cutoff) }
if (lpAkku >= lpLength) {
(musicTrack.filters[0] as Lowpass).setCutoff(SAMPLING_RATEF / 100.0)
faderTrack.forEach { (it.filters[0] as Lowpass).setCutoff(SAMPLING_RATEF / 100.0) }
lpInFired = false
}
}