Question

I have something like this:

public class Ship
{
    public void PositionX_pixels_set1(float _position_x){position_x = _position_x;}

    public class Engine : Ship
    {
        public int engines() { return 5; }
        public class Piston
        {
            public int pistons(){return 5;}
        }
    }

}


void Main
{
    Ship ship = new Ship()
    int a = ship.Engine.Piston.pistons;//why this not working?
}

I don’t know what I’m doing wrong. Why isn’t “ship.Engine.Piston.pistons” working?

Answer 1

Because Engine is type inside the Ship class, and its member.

To fix this can do something like:

public class Ship
{
    public void PositionX_pixels_set1(float _position_x){position_x = _position_x;}

    private void Engine _myEngine = new Engine(); //DEFINE ENGINE MEMBER

    public Engine MyEngine {   //DEFINE A PROPERTY TO ACCESS THAT MEMBER
        get {
           return _myEngine;
        }
    }

    public class Engine : Ship
    {
        public int engines() { return 5; }
        private Piston _myPiston = new Piston();//DEFINE PISTON MEMBER

        public Piston MyPiston {//DEFINE A PROPERTY TO ACCESS THAT 
           get {
               return _myPiston ;
           }
        }

        public class Piston
        {
            public int pistons(){return 5;}
        }

       MEMBER
    }

}

and after use it like:

int a = ship.MyEngine.MyPiston.pistons