ai hint values
0 = none
1 = world: door
2 = world: window
3 = world: button
4 = world: machinery
5 = world: ledge
6 = world: light source
7 = world: heat source
8 = world: blinking light
9 = world: bright colors
10 = world: human blood decal
11 = world: alien blood decal
300 = stuka: ceiling perch
301 = stuka: landing spot