Check if a unit is facing another unit

[Leazy]

Hello!

I'm looking for a simple way to check if unit A is facing (looking at) unit B. Facing meaning that unit B is maximum of +/- 45 degrees in front of unit A. I saw this:

• (Cos((Sector facing - (Angle from Loc1 to Loc2)))) Greater than or equal to 0.766

Here: http://www.hiveworkshop.com/forums/triggers-scripts-269/picking-all-units-front-another-unit-195945/

However, I do not fully understand that line, and also I don't know how to use "sector facing".

Thanks in advance!

 

[jonas]

first it computes the angle between the two, then it uses the fact that cos is 1 for 0 degrees and gets less until 180 degrees in either way. I guess 0.766 is the cos corresponding to 45 degrees or whatever.

It avoids having to think about modulo computations.

 

[Leazy]

All right. However, I can't find this option in the trigger list "Sector facing"

 

[jonas]

It's the facing of unit A in your example