- added Marisa Kirisame's CHAN_OVERLAP flag.
- exported S_IsActorPlayingSomething to ZScript.
The sound API change required deprecating A_PlaySound and S_Sound. There are now new variants S_StartSound and A_StartSound which have two distinct parameters for channel and flags.
# Conflicts:
# src/bbannouncer.cpp
# src/fragglescript/t_func.cpp
# src/g_shared/a_lightning.cpp
# src/p_effect.cpp
# src/p_mobj.cpp
# src/p_switch.cpp
# src/playsim/p_spec.cpp
# src/sound/s_doomsound.cpp
# src/sound/s_doomsound.h
# wadsrc/static/zscript/base.zs
# Conflicts:
# src/intermission/intermission.cpp
# src/sound/s_doomsound.cpp
Rationale:
When a mod adds a custom option menu, it adds a space before it, like this:
```
AddOptionMenu OptionsMenu
{
StaticText ""
Submenu "$MYTITLE", MyOptions
}
```
to prevent custom option menu being in the same block as the last entries in the
standard options list. It's okay.
But when more than one such mod is loaded, each one of them adds a space before
their option menu entry, and Options Menu becomes unnecessary bloated.
This simple edit allows mods to not add a space, still be separated from
standard options.
This is both for consistency and better localizability. The old code is retained to ensure that mods inheriting from the old menu continue to work.
# Conflicts:
# src/menu/menudef.cpp
# src/namedef.h
# wadsrc/static/zscript/ui/menu/optionmenu.zs
