Represent floats like the game does with three digit precision after the comma

[PBug90]

Floats seem to be single precision IEEE floats, but the actual value used in game appears to be rounded to the third digit after the comma, e.g. the point

( -3153.615966796875 | -4017.91357421875) is represented ingame as (-3153.616 | -4017.914).

This can be observed in the World Editor aswell.

Maybe it would make sense to update the parser to use this kind of precision aswell.