NY00123 authored May 01, 2020 and Evan Ramos committed May 21, 2020

of sector objects as whole groups of points and sprite angles.

The following goals are intended to be achieved with this code:
- Make it easy to let the user toggle sector object interpolation.
- Interpolate the angles of sprites carried by sector objects.
- Use the right amount of samples for interpolating a sector object,
depending on the players' locations, as done in the checks within
DoSector. Unfortunately, modifying DoSector itself to
unconditionally call MoveSectorObjects(sop, synctics) technically
changes the way sectors move (in the logical sense), and was
found out to make a specifically constructed user map unbeatable.
- Make it easy to disable interpolation of a whole sector object in
case of a need. This is especially important if such an object
is controlled by a player in multiplayer, mostly since this
isn't compatible with the way player prediction is working.