Accessing base class list in a derived class.

Questions & Answers
1

I need to get information on a list I made in a base class inside of a derived class. Is there anything special I need to do? Whenever I try to get the list.count the value just returns 0 every time. I’ve gone through the code letter by letter and nothing is wrong. list is public, semicolons, no misspellings. Help?

public class ShipBehavior : MonoBehaviour 
{
    public List<Vector3> position = new List<Vector3>();

    protected void Start () 
    {
        SetPoints();
    }

    protected void SetPoints ()
    {
        position.Add(new Vector3(-2f, -0.9f, -4.5f));
        position.Add(new Vector3(0f, -1.2f, -4.5f));
        position.Add(new Vector3(2f, -0.9f, -4.5f));
    }
}


public class BarrelParent : ShipBehavior
{
    void Start ()
    {
        InvokeRepeating("Spawn", 2, 1.0f);
    }

    void Spawn ()
    {
        //outputs as 0
        Debug.Log(position.Count.ToString());
    }
}
2

This is happening because the parent class’s Start(), and thus SetPoints() as well, is never being called.

Make Start() in the parent class protected (or public):

protected void Start ()

then call base.Start() as the first line of the child class’s Start() method.