How can I get "Script" component of GameObject without specific script name?

Unity Engine
,
1

Sorry for posting such an elementary question.
In my code, there are multiple different GameObjects those have same name of public variable inside. For example, I have objects of “Orc” and “Dragon”. Both scripts have same public variable like “HP”.
Then, I am trying to operate the variable “HP” when a fire-ball hits to either Dragon or Orc.
Each Dragon and Orc have differnt name script component <dragon_cntrl> and <orc_cntrl>. Therefore, I want to get the component by type, not by name. (I want to apply universal code either or any type of enemy like below.)

GameObject goEnemy = collision.gameObject;
goEnemy.GetComponent(typeof(script)).iHP--;

But 2nd line does not work with an error “The type or namespace name ‘script’ could not be found (are you missing a using directive or an assembly reference?)”.

Do I need listing up all characters script name like below?

goEnemy.TryGetComponent(<dragon_cntrl>).iHP–;
goEnemy.TryGetComponent(<orc_cntrl>).iHP–;

Thanks for your help in advance!

1 Like
2

You can use a base-class (such as MonoBehaviour or Component).
Though you’ll probably want to do GetComponents<>, so you can get all of the MonoBehaviours & then loop through them.

If you want to get a .iHP from the script, you might want to have the Scripts implement an Interface instead. Then you can do GetComponent();

public interface IHealth
{
  void ChangeHealth(int change);
}

public class Class1 : MonoBehaviour, IHealth
{
    private int health;

    void ChangeHealth(int change)
    {
        health -= change;
    }
}


public class Class2 : MonoBehaviour, IHealth
{
    private int health;

    void ChangeHealth(int change)
    {
        health -= change;
    }
}


public class ManagementScript : MonoBehaviour
{
    void DoStuff(GameObject go)
    {
        go.GetComponent<IHealth>().ChangeHealth(10);
    }
}
2 Likes
3

@SF_FrankvHoof ,
Thank you very much for educating me. It works and I learned!