Attack angle

[swipe5weep]

take a look

Alright, base from the image I uploaded I got a tower there and I want it to hit only the footman lane. I tried doing it with triggers and it works fine, but when the footman is not on the exact 180 degree(the thick pink line), It does not attacked the footman. When I added some degree in towers attack angle(the thin pink lines), it also hits the peasant and knight. The terrain shows how I divide the lanes, and I want my towers attacked lane by lane. Random monsters will be spawned that's why I used angle comparison rather than unit.
Thanks in advance for those who will help.
And if you have other idea on how to make that unit attack only one lane tell me.

+REP will surely be given.

 

[MortAr]

Hm, how about detect when a unit enters the specified lane, add it to a group.

Then when the tower is about to attack, check if the attacked unit is in that group (lane), if its not, then cancel the attack.

 

[swipe5weep]

Well that's one of what I thought before. But I don't feel that good to add many regions. For example I got 10 lanes per player, playable with 10 players. Then I'm gonna add 100 regions I'll just do that if I got no other options. Thanks for trying to help I'll add you rep. Still searching/thinking for solutions.

 

[MortAr]

Did you try to use 180 +/- 5 degrees while checking the angle?