About adding coordinates to the Tower

The "arguments" are the values you pass in the parentheses when you make a call to a method.

So here's your definition of "decreaseHealth" on line 109 of Invader.cs:

        public virtual void decreaseHealth(int factor, MapLocation towerLocation)

It now requires two arguments, an int and a MapLocation.

But here on line 52 of Tower.cs it is being called but given only one argument:

            invader.decreaseHealth(towerPower);

Whenever you change a method signature (which means the number and/or type of arguments), you have to also change every place it is called in the code to match. So the call in Tower.cs needs to pass along the MapLocation now:

            invader.decreaseHealth(towerPower, _location);  // pass tower location also!

And the same issue applies in the two other places it gets called.

i deleted my tries, this is the current snap: https://w.trhou.se/suzjr3k4f6

Steven Parker where i pass the arguments?

Thanks steven now its working and i learned from that! this is the current snap: https://w.trhou.se/othrwt3nt7

I just cant figure out how to deal with the duplicate message at sniperTower

Steven Parker