PS's choice system has now been majorly rewritten!
Battle#parseChoice has been eliminated, and Battle#choose is now a
very lightweight wrapper around the BattleSide#choose* functions, which
now handle validation.
Partial decisions have been mostly removed. You can manually construct
decisions partially with the side.choose* functions, but there's no
other support for them. Partial undo has been removed completely.
Choice tracking has been renamed from side.choiceData to side.choice.
side.choices has been removed and is now autogenerated from side.choice
when needed.
side.choiceData.decisions has been renamed side.choice.actions. In the
future, "decision" is a deprecated term and should be called "action"
wherever it shows up.
side.choiceData.waiting and side.getDecisionsFinished() have been
merged into side.isChoiceDone().
Other values in side.choiceData have either been rendered unnecessary
or renamed to something clearer.
The "skip" and "pass" choices have been merged together. Passes can
still be filled in automatically (so you can just use `/move 1` in
doubles when you have only one Pokémon left).
Presumably because of Dancer's existence, attempting to use another move
besides the Choice-locked move now results in the move being used but
failing immediately, with no PP loss. This applies even during Magic
Room, etc.
The regressions affected information handling
- Seeds used for random teams were no longer being logged.
- The seed used for generating p2's team was also used for the battle itself.
Dancer Petal Dance shouldn't lock. This is a horrible hack but it fixes
the problem. A real fix would involve refactoring basically all locking
moves. Which I guess I should do one day...
Fixes#2974
