DamageManager.cs

using UnityEngine;

public class DamageManager
{
    public void CalculateDamage(Character character, int damage)
    {
    private int finalDamage = 0;
    
        if(character is Warrior)
    {
        finalDamage = damage - character.Armor;
    }
    else if(character is Mage)
    {
        finalDamage = damage - character.MagicProtection - character.Armor;
    }
    else if(character is Rogue)
    {
        finalDamage = damage - character.Furtivity - character.Armor;
    }
    
    if(finalDamage > 0)
    {
        character.Life -= finalDamage;
    }
}
}