Shoot within angle

Hi!

In my Iphone game i have a tank.

I want the tank "only" to shoot when a enemy is within 5 degr of the tank turret, no matter how far the enemy and the tank turret are away from eachother.

I have seen the "is between angle conditions etc".

However i havent found a solution to this.

Anyone have some insight?

Thanx!

Sprite has a condition to compare if it is within a certain angle.

sprite angle is with in 5 of angle(Sprite.X,Sprite.Y,Sprite2.X,Sprite2.Y): do stuff

I tried that but it only applied to when the other sprite was on the + side of the Y.

I need something to measure the angle in full 360.

Or i am doing something wrong?

Is the enemy "on-screen" or qhen you say no matter how far, that includes "off-screen" enemies?... if it's the first scenario, maybe you can try this:

http://dl.dropbox.com/u/103248101/capx/5degrees.capx

it's just a sprite triangle-shaped acting as the aim of the tank's turret. The triangle has a 5� angle facing the tank, so anything overlapping that "aim" is within 5� of the tanks turret (that if my trigonometry doesen't fail me)

I supposed it was a top-viewed tank... Hope it works for you

Thanx danuyos

Im going to try it out!

Nimtrix

That also seems the right way of doing things.

Thanx!

Im of testing!

Woops, accidentaly deleted my post by misclick:

You can use the anglediff expression:

+System: Every tick
-> Set a to angle(Turret.X, Turret.Y, Target.X, Target.Y)
-> Set a0 to default angle

+System: Compare two values (anglediff(a, a0) <= 5)
-> Rotate towards a
+Else:
-> Rotate towards a0

edited><editID>Nimtrix</editID><editDate>2012-09-20 21:20:08</editDate></edited>