fixed wrong ap for attacking lying/proning enemys[Depends on #564]

[daviel]

fixes #190, depends on #564 The calculation wasn't correct for melee attacks on lying/proning enemys. Lying enemys stand on 2 fields/grids and are attacked on the torso not legs.

[lynxlynxlynx]

This inadvertently has code from other commits in it. You can wait for those to be merged first or do some git magic to get only this fix into a commit (reset, git commit -p).

[daviel]

This fix depends on the changes made by the other commit and won't work correctly otherwise. Therefore I will wait until the other commit is merged/declined. Should I mark this PR as pending or something like this?

[Manuel-K]

Just write something like "Note: depends on XXX".