[enhancement] Chase and Evade methods for entities doesn't check for walls.

[ArthurCose]

The Chase and Evade methods should have boolean a parameter to let the entity try to walk around walls instead of through them

ex.) entity.Evade(player, 4, true);

They shouldn't stop the entity from moving through a wall however, since someone might want to make a mod that creates ghosts or something similar that moves through walls.