Superjump when jumping through an upwards-moving platform

Minor bug in my opinion. I wouldn't risk breaking stuff just to fix it for 2.2.

Some observations: Normally, the pmomz of this platform is 4.

However, when jumping through it while it's moving up, pmomz becomes 23 for a single tic, causing the "superjump". Additionally, the PF_STARTJUMP and PF_JUMPED flags get removed, making it impossible to use air ablities.

2.2.10

You can also snap to the floor if you happen to be inside the moving platform while it moves upwards and you move up or down near it, which Tails Flight can perform easily. At first I was thinking that this was related to #873 until I got some sort of superjump while flying through the moving platforms in GFZ2 and then I saw this issue to see if it was already mentioned. Anyways... the Snap-to-Floor.

GFZ2, I was flying around under the moving platform as it was going up and I was alternating between going up & down inside it and for some reason I snapped towards the floor under the platform.

PTZ has moving platforms that either go up or down. Snap-to-Floor occurs either if moving up or down while the platform is going up while the superjump seems to only occur if you fly through it as the platform goes down after some attempts... though if there are multiple moving platforms... the superjumps will stack as you go through the platforms.

added Movement/physics label

mentioned in merge request !1955 (merged)

mentioned in issue #993

mentioned in commit 177bdd68

closed with merge request !1955 (merged)