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Invoking InRangeOf Function
I am trying to put this into perspective, InRangeOf Functions job is to calculate the distance between the tower _location and each invader location. We are using the DistanceTo method to get the value. What I am having problem is with the implementation of that.
InRangeOf function needs a Maplocation object and a Range to check and return true or false. The if statement written here if (_location.InRangeOf(invader location, 1)). I understand this portion of it InRangeOf(invader location, 1). But how are we checking this with tower _location in the if statement. I need to clarify this so that the concepts sink into me and I can use them when required. So please be descriptive.
_location. invokes the method but _location is not a object of the tower class. What am I missing.
Steven Parker228,991 Points
_location is a MapLocation object that is part of the Tower class.
I'm not sure why you would think that is is not. It's defined as a private read-only field in the class.
When you call the InRangeOf method on
_location, giving it another MapLocation object to compare to, it computes the DistanceTo that other object and returns a true/false if it is close enough.
Thanks I get it. I was looking for the conventional class object= new obect concept to invoke the instance method. What I missed was _location is maplocation object and its invoking a maplocation class method. Instead of doing this in maplocation class we are doing this where needed i.e. tower class.
I will add this to my repertoire.