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SN: fix arp macro with easy period

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tildearrow 2024-08-23 02:25:40 -05:00
parent 9b64bc104f
commit bae45e0b86
1 changed files with 6 additions and 2 deletions
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8
src/engine/platform/sms.cpp
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@ -165,8 +165,12 @@ int DivPlatformSMS::snCalcFreq(int ch) {
if (ch==3) CHIP_DIVIDER=noiseDivider; if (ch==3) CHIP_DIVIDER=noiseDivider;
int easyStartingPeriod=16; int easyStartingPeriod=16;
int easyThreshold=round(128.0*12.0*log((chipClock/(easyStartingPeriod*CHIP_DIVIDER))/(0.0625*parent->song.tuning))/log(2.0))-384+64; int easyThreshold=round(128.0*12.0*log((chipClock/(easyStartingPeriod*CHIP_DIVIDER))/(0.0625*parent->song.tuning))/log(2.0))-384+64;
if (parent->song.linearPitch==2 && easyNoise && chan[ch].baseFreq+chan[ch].pitch+chan[ch].pitch2>(easyThreshold)) { int curFreq=chan[ch].baseFreq+chan[ch].pitch+chan[ch].pitch2+(chan[ch].arpOff<<7);
int ret=(((easyStartingPeriod<<7))-(chan[ch].baseFreq+chan[ch].pitch+chan[ch].pitch2-(easyThreshold)))>>7; if (chan[ch].fixedArp) {
curFreq=chan[ch].baseNoteOverride<<7;
}
if (parent->song.linearPitch==2 && easyNoise && curFreq>easyThreshold) {
int ret=(((easyStartingPeriod<<7))-(curFreq-(easyThreshold)))>>7;
if (ret<0) ret=0; if (ret<0) ret=0;
return ret; return ret;
} }