Checking if in range

[MechatheSlag]

[]Yes this IS what you are looking for.

This formula calculates distance and -little math- constant distance from some point is... CIRCLE <img src="/center/images/graemlins/smile.gif" alt="" /> Also to test if the object is within or out the circle you just use this simple thing to find out if its lower or greater than radius. [/]
Notice how it's NOT A CIRCLE ALL THE WAY AROUND? That means if the default MMF2 object is behind the blue object it shouldn't make any action.

[DanielRehn]

So... compare the angle between them... -_-

[Pkeod]

Like Daniel said you'd need to also do an angle check. Advanced math object can do that too. The problem with what you are trying to do is that you want the angle to be dynamic... so what you would have to do is always check the angle by the direction it is facing (90degrees to each side). When you are checking the angles you would need a system that would know that if it went to the right 90 it would or would not get a negative angle - and so it would need add the negative to 360 to get a non negative angle, I think ^^