[Spell] check if path is blocked

[Cheshire]

hey,

is there any way to detect if a unit can walk to point x - as in there is no tree, cliff, unit etc' blocking the way? I looked through a bunch of old threads about it and no-one had a good solution, but maybe with the new natives?

I am doing this for an AI system and trying to avoid braindead walking into things...(so if there is a better way to do that, I guess that works too...)

thx