enhancement: NPCs could know that they can't reach someone

[AlexVild]

Is your feature request related to a problem? Please describe.
It would be cool if NPCs could know when they couldn't reach someone, so they don't trigger aggro. This could also be a configurable option on each NPC for NPCs that you're okay with aggroing through walls or whatever.

Describe the solution you'd like
A checkbox on NPCs, "ignore walls for aggro" or something, and otherwise have NPCs that can't reach a player prevent aggroing on that player unless otherwise hit by the player.

[da-rulez]

Very nice suggestion.

Ideal for NPC's that are below you when standing on a cliff or bridge.

[SilverShardOnline]

This would be wonderful.