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Add some commentary for special series of effects in S3M, XM and IT

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KungFuFurby 2025-09-09 18:36:02 -04:00 committed by tildearrow
parent 7a7d381889
commit 3df67fb1b3
3 changed files with 10 additions and 10 deletions
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6
src/engine/fileOps/it.cpp
View file

@ -1516,15 +1516,15 @@ bool DivEngine::loadIT(unsigned char* file, size_t len) {
break;
case 'S': // special...
switch (effectVal[chan]>>4) {
case 0x8:
case 0x8: // panning
p->data[readRow][effectCol[chan]++]=0x80;
p->data[readRow][effectCol[chan]++]=(effectVal[chan]&15)<<4;
break;
case 0xc:
case 0xc: // note cut
p->data[readRow][effectCol[chan]++]=0xec;
p->data[readRow][effectCol[chan]++]=effectVal[chan]&15;
break;
case 0xd:
case 0xd: // note delay
p->data[readRow][effectCol[chan]++]=0xed;
p->data[readRow][effectCol[chan]++]=effectVal[chan]&15;
break;

6
src/engine/fileOps/s3m.cpp
View file

@ -1101,15 +1101,15 @@ bool DivEngine::loadS3M(unsigned char* file, size_t len) {
break;
case 'S': // special...
switch (effectVal>>4) {
case 0x8:
case 0x8: // panning
p->data[readRow][effectCol[chan]++]=0x80;
p->data[readRow][effectCol[chan]++]=(effectVal&15)<<4;
break;
case 0xc:
case 0xc: // note cut
p->data[readRow][effectCol[chan]++]=0xec;
p->data[readRow][effectCol[chan]++]=effectVal&15;
break;
case 0xd:
case 0xd: // note delay
p->data[readRow][effectCol[chan]++]=0xed;
p->data[readRow][effectCol[chan]++]=effectVal&15;
break;

8
src/engine/fileOps/xm.cpp
View file

@ -1147,11 +1147,11 @@ bool DivEngine::loadXM(unsigned char* file, size_t len) {
case 0xe: // special...
// TODO: implement the rest
switch (effectVal>>4) {
case 0x5:
case 0x5: // fine tune
p->data[j][effectCol[k]++]=0xe5;
p->data[j][effectCol[k]++]=(effectVal&15)<<4;
break;
case 0x9:
case 0x9: // retrigger
p->data[j][effectCol[k]++]=0x0c;
p->data[j][effectCol[k]++]=(effectVal&15);
break;
@ -1171,11 +1171,11 @@ bool DivEngine::loadXM(unsigned char* file, size_t len) {
}
volSliding[k]=true;
break;
case 0xc:
case 0xc: // note cut
p->data[j][effectCol[k]++]=0xdc;
p->data[j][effectCol[k]++]=MAX(1,effectVal&15);
break;
case 0xd:
case 0xd: // note delay
p->data[j][effectCol[k]++]=0xed;
p->data[j][effectCol[k]++]=MAX(1,effectVal&15);
break;