Inheritance Question

Questions & Answers
1

This is the comparison I am making:

if (aiController.attackTarget ==
entity)

aiController.attackTarget is of type LivingEntity and entity is of type AIController. Can I compare these 2 different types because of inheritance? Can I say, an AIController is a LivingEntity.

This is the setup I am using:

IEntity (interface)

using UnityEngine;
public interface IEntity
{
    Vector3 position { get; set; }
    GameObject gameObject { get; }
}

Entity.cs (base class)

using UnityEngine;
public abstract class Entity : MonoBehaviour, IEntity
{
    public Vector3 position
    {
        get { return this.transform.position; }
        set { this.transform.position = value; }
    }
}

LivingEntity.cs

using UnityEngine;
public abstract class LivingEntity : Entity
{
    private LivingEntity _attackTarget;
    public LivingEntity attackTarget
    {
        get { return _attackTarget; }
        set { _attackTarget = value; }
    }
}

AIController.cs

using UnityEngine;
public class AIController : LivingEntity
{
    // Stuff   
}
2

Yes, you can just use == because == is the same as the ReferenceEquals().

It just checks whether they are the same instance.

In contrast, Equals() checks value equality.

By the way, since you’ve ALREADY CHOSE to use inheritance, so “an AIController IS a LivingEntity”.