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Question by Nix_Sabev · Jan 29, 2016 at 02:36 PM · animationerror

Abstract and non abstract class

Hi guys,

I am pretty new in this and i got stuck at the begining with my code. I am trying to make my object behaviour and movement but it gives me this error here:

error CS0513: `Creature.Attack()' is abstract but it is declared in the non-abstract class "Creature"

Can you please some one find where my mistake might be on this code below:

using UnityEngine; using System.Collections;

public class Creature : MonoBehaviour {

 public string name; 

 public int health;

 public int damage;

 public float range;

 /// attack spee is one attack per second
 public float attackSpeed = 2f;

 public void GetHit (int playerDamage)


 {
     health = health - playerDamage;

}

     protected abstract void Attack();

}

Thank you in advance! Nick

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Answer by Cepheid · Jan 29, 2016 at 10:20 PM

@Nix_Sabev

The error message is telling you the exact problem you've declared an abstract method in a non-abstract class. Abstract methods can only be created within an abstract class. Your class creature is not abstract and thus can not implement an abstract method.

If you want a method that you can override then simply use the virtual keyword which allows you to override the method. If you simply want a method contract for your class then consider using an interface.

But, if you want an abstract method then you'll need to create a separate abstract class with the abstract method Attack() contained within. Then, you will inherit the abstract class and override the Attack() methods implementation within the creature class. I would strongly advise, that if the topic of interfaces, virtual, abstract or overriding confuses you. Then maybe read a bit more about C# and coding concepts before using them. I hope this helps!

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Answer by DeadlyPanda01 · Mar 04, 2016 at 10:57 PM

make like that:

 using UnityEngine;
 using System.Collections;
 
 public abstract class Creature : MonoBehaviour
     {
     public string name;
     bla bla bla;
     }
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