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actually implement pitch of C-4

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This commit is contained in:
tildearrow 2022-02-04 03:29:40 -05:00
parent 6a29ee63f5
commit 902febe298
7 changed files with 71 additions and 15 deletions
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7
src/engine/platform/arcade.cpp
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@ -370,7 +370,12 @@ void DivPlatformArcade::tick() {
if (chan[i].freqChanged) {
chan[i].freq=chan[i].baseFreq+(chan[i].pitch>>1)-64;
if (chan[i].furnacePCM) {
chan[i].pcm.freq=MIN(255,((parent->song.tuning*pow(2.0,double(chan[i].freq+256)/(64.0*12.0)))*255)/31250);
double off=1.0;
if (chan[i].pcm.sample>=0 && chan[i].pcm.sample<parent->song.sampleLen) {
DivSample* s=parent->song.sample[chan[i].pcm.sample];
off=(double)s->centerRate/8363.0;
}
chan[i].pcm.freq=MIN(255,((off*parent->song.tuning*pow(2.0,double(chan[i].freq+256)/(64.0*12.0)))*255)/31250);
if (dumpWrites && i>=8) {
addWrite(0x10007+((i-8)<<3),chan[i].pcm.freq);
}