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Made a dedicated read string function, messed a bit with the TFM

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effects.

Added a compatibility flag that resets the effects after a row
change/new note
This commit is contained in:
techmetx11 2024-04-12 21:36:27 +00:00
parent 7a051b4486
commit 4bc4bfac32
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GPG key ID: 20E0C88A0E7E5AF2
4 changed files with 60 additions and 17 deletions
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5
src/engine/engine.h
View file

@ -104,7 +104,7 @@ struct DivChannelState {
int delayOrder, delayRow, retrigSpeed, retrigTick;
int vibratoDepth, vibratoRate, vibratoPos, vibratoPosGiant, vibratoDir, vibratoFine;
int tremoloDepth, tremoloRate, tremoloPos;
unsigned char arp, arpStage, arpTicks, panL, panR, panRL, panRR, lastVibrato, lastPorta, cutType;
unsigned char arp, arpStage, arpTicks, panL, panR, panRL, panRR, lastVibrato, lastPorta, cutType, lastArp, lastVibrato2, lastPorta2;
bool doNote, legato, portaStop, keyOn, keyOff, nowYouCanStop, stopOnOff, releasing;
bool arpYield, delayLocked, inPorta, scheduledSlideReset, shorthandPorta, wasShorthandPorta, noteOnInhibit, resetArp;
bool wentThroughNote, goneThroughNote;
@ -150,6 +150,9 @@ struct DivChannelState {
lastVibrato(0),
lastPorta(0),
cutType(0),
lastArp(0),
lastVibrato2(0),
lastPorta2(0),
doNote(false),
legato(false),
portaStop(false),

29
src/engine/fileOps/tfm.cpp
View file

@ -134,6 +134,14 @@ public:
return ret;
}
String readString(size_t l) {
String ret;
ret.reserve(l);
while (l--) {
ret += readC();
}
return ret;
}
void skip(size_t l) {
// quick and dirty
while (l--) {
@ -158,6 +166,7 @@ bool DivEngine::loadTFM(unsigned char* file, size_t len) {
ds.systemName="Sega Genesis/Mega Drive or TurboSound FM";
ds.subsong[0]->hz=50;
ds.systemLen=1;
ds.resetEffectsOnNewNote=true;
ds.system[0]=DIV_SYSTEM_YM2612;
unsigned char magic[8]={0};
@ -197,24 +206,17 @@ bool DivEngine::loadTFM(unsigned char* file, size_t len) {
// TODO: use this for something, number of saves
(void)reader.readSNoRLE();
unsigned char buffer[384];
// author
logD("parsing author");
reader.read(buffer,64);
ds.author=String((const char*)buffer,strnlen((const char*)buffer,64));
memset(buffer, 0, 64);
ds.author=reader.readString(64);
// name
logD("parsing name");
reader.read(buffer,64);
ds.name=String((const char*)buffer,strnlen((const char*)buffer,64));
memset(buffer, 0, 64);
ds.name=reader.readString(64);
// notes
logD("parsing notes");
reader.read(buffer,384);
String notes((const char*)buffer,strnlen((const char*)buffer,384));
String notes=reader.readString(384);
// fix \r\n to \n
for (auto& c : notes) {
@ -398,9 +400,12 @@ bool DivEngine::loadTFM(unsigned char* file, size_t len) {
pat->data[k][5]=effectVal[k];
break;
case 1:
// pitch slide up
// note slide up
case 2:
// pitch slide down
// note slide down
pat->data[k][4]=0xF0|effectNum[k];
pat->data[k][5]=effectVal[k];
break;
case 3:
// portamento
case 4:

33
src/engine/playback.cpp
View file

@ -740,6 +740,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
}
break;
case 0x03: // portamento
chan[i].lastPorta2=effectVal;
if (effectVal==0) {
chan[i].portaNote=-1;
chan[i].portaSpeed=-1;
@ -768,6 +769,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
}
break;
case 0x04: // vibrato
chan[i].lastVibrato2=effectVal;
if (effectVal) chan[i].lastVibrato=effectVal;
chan[i].vibratoDepth=effectVal&15;
chan[i].vibratoRate=effectVal>>4;
@ -775,6 +777,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
dispatchCmd(DivCommand(DIV_CMD_PITCH,i,chan[i].pitch+(((chan[i].vibratoDepth*vibTable[chan[i].vibratoPos]*chan[i].vibratoFine)>>4)/15)));
break;
case 0x05: // vol slide + vibrato
chan[i].lastVibrato2=effectVal;
if (effectVal==0) {
chan[i].vibratoDepth=0;
chan[i].vibratoRate=0;
@ -782,6 +785,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
chan[i].vibratoDepth=chan[i].lastVibrato&15;
chan[i].vibratoRate=chan[i].lastVibrato>>4;
}
dispatchCmd(DivCommand(DIV_CMD_HINT_VIBRATO,i,chan[i].vibratoDepth,chan[i].vibratoRate));
dispatchCmd(DivCommand(DIV_CMD_PITCH,i,chan[i].pitch+(((chan[i].vibratoDepth*vibTable[chan[i].vibratoPos]*chan[i].vibratoFine)>>4)/15)));
// TODO: non-0x-or-x0 value should be treated as 00
@ -800,6 +804,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
dispatchCmd(DivCommand(DIV_CMD_HINT_VOL_SLIDE,i,chan[i].volSpeed));
break;
case 0x06: // vol slide + porta
chan[i].lastPorta2=effectVal;
if (effectVal==0 || chan[i].lastPorta==0) {
chan[i].portaNote=-1;
chan[i].portaSpeed=-1;
@ -870,6 +875,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
dispatchCmd(DivCommand(DIV_CMD_HINT_VOL_SLIDE,i,chan[i].volSpeed));
break;
case 0x00: // arpeggio
chan[i].lastArp=effectVal;
chan[i].arp=effectVal;
if (chan[i].arp==0 && song.arp0Reset) {
chan[i].resetArp=true;
@ -1110,6 +1116,33 @@ void DivEngine::processRow(int i, bool afterDelay) {
}
}
if (song.resetEffectsOnNewNote) {
if (chan[i].lastArp) {
chan[i].lastArp=0;
} else {
chan[i].arp=0;
dispatchCmd(DivCommand(DIV_CMD_HINT_ARPEGGIO,i,chan[i].arp));
}
if (chan[i].lastVibrato2) {
chan[i].lastVibrato2=0;
} else {
chan[i].vibratoDepth=0;
chan[i].vibratoRate=0;
dispatchCmd(DivCommand(DIV_CMD_HINT_VIBRATO,i,chan[i].vibratoDepth,chan[i].vibratoRate));
}
if (chan[i].lastPorta2) {
chan[i].lastPorta2=0;
} else {
chan[i].portaSpeed=-1;
chan[i].portaNote=-1;
dispatchCmd(DivCommand(DIV_CMD_HINT_PORTA,i,CLAMP(chan[i].portaNote,-128,127),MAX(chan[i].portaSpeed,0)));
chan[i].inPorta=false;
dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,false,0));
}
}
if (panChanged) {
dispatchCmd(DivCommand(DIV_CMD_PANNING,i,chan[i].panL,chan[i].panR));
}

4
src/engine/song.h
View file

@ -331,6 +331,7 @@ struct DivSong {
bool resetArpPhaseOnNewNote;
bool ceilVolumeScaling;
bool oldAlwaysSetVolume;
bool resetEffectsOnNewNote;
std::vector<DivInstrument*> ins;
std::vector<DivWavetable*> wave;
@ -454,7 +455,8 @@ struct DivSong {
oldDPCM(false),
resetArpPhaseOnNewNote(false),
ceilVolumeScaling(false),
oldAlwaysSetVolume(false) {
oldAlwaysSetVolume(false),
resetEffectsOnNewNote(false) {
for (int i=0; i<DIV_MAX_CHIPS; i++) {
system[i]=DIV_SYSTEM_NULL;
systemVol[i]=1.0;