Protracker playback library with sound effects

[no9]

There are no 'subtunes' in MOD format, per se. You just start playing a song from the position where a supposed subsong starts. When the player encounters Bxx command (it is the Protracker's GOTO) it jumps wherever you like, e.g. go back to the subsong's begining.

[carrion]

Thanks. That's what I wanted to know.
OK back to programming

[carrion]

One more question:
Is there a way to play Sound FX on selected channel? Looking at the functions provided in first post I think there's not but maybe there's some trick to do it.
The thing is that the music in my game leaves 4th channel almost empty to play sfx but when I play the sfx it plays it also on other channels which I dont like.
TIA

[E-Penguin]

Use MTPlayFX, you can set the channel in the sfx structure:

;   Request playing of a prioritized external sound effect, either on a
;   fixed channel or on the most unused one.
;   Structure layout of SfxStructure:
;     void *sfx_ptr  (pointer to sample start in Chip RAM, even address)
;     WORD  sfx_len  (sample length in words)
;     WORD  sfx_per  (hardware replay period for sample)
;     WORD  sfx_vol  (volume 0..64, is unaffected by the song's master volume)
;     BYTE  sfx_cha  (0..3 selected replay channel, -1 selects best channel)
;     BYTE  sfx_pri  (priority, must be in the range 1..127)
;   When multiple samples are assigned to the same channel the lower
;   priority sample will be replaced. When priorities are the same, then
;   the older sample is replaced.
;   The chosen channel is blocked for music until the effect has
;   completely been replayed.
;

[carrion]

Looks promising, but how do I access this structer after laoding or decodeing a sample file?

[E-Penguin]

I've put examples here:
https://github.com/E-Penguin/blitz_p...master/example