This is another corner case. Parasites and fixbots have a bbox height of
24, walkmonster_start_go() hardcodes a viewheight of 25. Therefor most
traces in other functions like visible() overshoot the parasite. Fix
this by not overriding the monster viewheight.
Analyzed and fix suggested by @BjossiAlfreds. Closes issue
yquake2/yquake2#440.
A long time ago in 2b4f223 I introduced a small logic change to the
handling of stacked entities. If two entities were standing on each
other the original code set the movement speed of the upper entity
to 0. It would be pushed or dragged by the lower entity. I changed
that in way that the upper entity got the same speed as the lower
entity. With that change it wasn't pushed or dragged but moving on
it's own. I hoped to fix some of the 'elevator hurts player or monster'
bugs.
That hope was wrong, at a later time we quirked all elevators that hurt
the player. Additionally the change lead to physics bugs if entities are
standing on high speed elevators (more than 200 units per seconds). So
revert it
With this commit the game logic is cleaned up. Coop spawnpoint cleanup
is still missing, it'll be done at a later time. While not completely
finshed, rogue should alread run much more stable than the unmodified
code. Please note, that this is still untested! Headers are next,
monsters will be done after that.
