smoother

the largest reductions in 'legs under one tile'

In general, this patch is expected to introduce more 'legs under one tile' - this is coming from moving the search on the tile centers - it is allowed to have one short leg from the actor's position to its tile center, if there is no direct route from actor's position to the next waypoint. Moreover, 8 degrees of freedom allowed for very sharp U-turns, it's clearly visible in the Thieve's Maze. Any reductions in this metric are coming from very bad habit of the old version to hug diagonal walls.

Smoother paths: 589 out of 4663 requests had fewer one-tile legs, showing only 24 exemplary illustrations.

ar0602_0184
ar0602_0198
ar0700_0056
ar5201_0196
ar0146_0026
ar0403_0091
ar0602_0045
ar0602_0051
ar0700_0384
ar0800_0040
ar3400_0211
ar5201_0023
ar0403_0009
ar0403_0346
ar0503_0039
ar0506_0109
ar0510_0010
ar0600_0129
ar0600_0251
ar0602_0124
ar0700_0067
ar0700_0074
ar0700_0083
ar0700_0105