Eliminates a number of annoying little hacks by getting rid of
`slide_mode` and instead trusting the terrain, live, like CC2 seems to
do (and Lynx definitely does).
- Players and monsters do, in fact, block each other. The helmet only
prevents death.
- Death happens during collision check, which is the entire reason items
don't save you: you're collided with first! This allows removing
several special cases.
- Spring mining is prevented almost incidentally, by virtue of collision
being checked both at decision time and movement time. It /can/
happen to actors other than the player, but seemingly not blocks.
- Some monsters, whose movement is essentially forced anyway, skip the
decision time collision check. This includes doppelgangers, which is
why they always spring mine.
- `Tileset.animation_slowdown` is gone!
- Actors are now free to animate every move or every two moves, and have
been configured to do so appropriately. This fixes the appearance of
blobs, most noticeably. (Also fixes #36.)
- Actors that are always animated in CC2 are now always animated in LL.
- Lilypads/turtles now bob randomly. More randomly than CC2, even.
- Players no longer appear to be swimming when stepping off of lilypads.
- Invisible walls no longer temporarily reveal themselves when you have
the x-ray glasses (secret eye).
- There's a new option for using the CC2 animation timing, though god
knows why you would want to.
Also expand the blue key MS compat flag to make keys never block
monsters; allow rovers to pass through score flags; and allow
doppelgängers to pause the clock.
Similar to a dirt block, but stores the first item it moves over, dropping it when destroyed and cloning it in a cloning machine. Has ice block/frame block collision. Turns into floor in water. Doesn't have dirt block immunities.
Now reads:
Conducts power (like a 4-way wire). While powered, destroys anything not wearing lightning boots (except dirt blocks)
And when you step on it with lightning boots it conducts power
And it's not on by default if it's just sitting on its own somewhere
