#927 closed defect
ZAK256: Missing opcode 02/82
| Reported by: | SF/hibernatus | Owned by: | fingolfin |
|---|---|---|---|
| Priority: | normal | Component: | Engine: SCUMM |
| Version: | Keywords: | ||
| Cc: | Game: | Zak McKracken |
Description
This opcode is used for audio CD commands.
Here is what to do:
r is the result b is the parameter
b == 0: if an audio track is playing: r = 0 else: r = 1
b == FF: I don't know what it's used for, but anyway it's never used in the scripts.
b == FE: if an audio track is playing: r = the SO block number else: r = 0
b == FD: pause the audio track r = anything
b == FC: unpause (start where it was when you paused) r = anything
b == a CD track number: r = track length in seconds
To check scummvm returns the right track length you can look at the global script #9 (0x888A in 49.LFL).
FD and FC are used to let the game load several resources without hanging when a CD track is playing. I guess it's already not a problem in scummvm :)
Ticket imported from: #762589. Ticket imported from: bugs/927.
Change History (4)
comment:1 by , 22 years ago
comment:2 by , 22 years ago
About this:
b == 0: if an audio track is playing: r = 0 else: r = 1
You wrote the opposite in cvs. That function returns 0 when a track is playing. Anyway, it's not used from scripts either, only from code.
comment:3 by , 22 years ago
This can be closed, the opcode is now implemented (although some parts, like (un)pausing the CD track, is not implemented, but that is already marked with a TODO in the source code).
comment:4 by , 22 years ago
| Owner: | set to |
|---|---|
| Status: | new → closed |
er, i forgot a little detail when i say "if an audio track is playing":
for b == 0 "playing" means "physically playing".
for b == FE "playing" means that an audio track is currently supposed to play. You don't care if it's paused, you still return the soundID.