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GB Audio: Fix envelopes not updating in certain cases

This commit is contained in:
Jeffrey Pfau 2016-02-21 11:00:50 -08:00
parent dedcaeb51d
commit 1ea453e6d2
1 changed files with 6 additions and 0 deletions
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6
src/gb/audio.c
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@ -149,6 +149,8 @@ void GBAudioWriteNR14(struct GBAudio* audio, uint8_t value) {
audio->ch1.envelope.currentVolume = audio->ch1.envelope.initialVolume;
if (audio->ch1.envelope.currentVolume > 0) {
audio->ch1.envelope.dead = audio->ch1.envelope.stepTime ? 0 : 1;
} else {
audio->ch1.envelope.dead = audio->ch1.envelope.stepTime ? 0 : 2;
}
audio->ch1.realFrequency = audio->ch1.control.frequency;
audio->ch1.sweepStep = audio->ch1.time;
@ -202,6 +204,8 @@ void GBAudioWriteNR24(struct GBAudio* audio, uint8_t value) {
audio->ch2.envelope.currentVolume = audio->ch2.envelope.initialVolume;
if (audio->ch2.envelope.currentVolume > 0) {
audio->ch2.envelope.dead = audio->ch2.envelope.stepTime ? 0 : 1;
} else {
audio->ch2.envelope.dead = audio->ch2.envelope.stepTime ? 0 : 2;
}
if (audio->nextEvent == INT_MAX) {
audio->eventDiff = 0;
@ -320,6 +324,8 @@ void GBAudioWriteNR44(struct GBAudio* audio, uint8_t value) {
audio->ch4.envelope.currentVolume = audio->ch4.envelope.initialVolume;
if (audio->ch4.envelope.currentVolume > 0) {
audio->ch4.envelope.dead = audio->ch4.envelope.stepTime ? 0 : 1;
} else {
audio->ch4.envelope.dead = audio->ch4.envelope.stepTime ? 0 : 2;
}
if (audio->ch4.power) {
audio->ch4.lfsr = 0x40;