Array of scripts

// BaseQuest derives from MonoBehaviour, so it can be added to GameObjects

// abstract means: this class does not implement any functions, it only says which functions // must be implemented in derived classes public abstract class BaseQuest : MonoBehaviour { // here we have the basic quest behaviour - each derived class knows what to do with this function public abstract string QuestText(); }

// a simple quest is a quest - so it derives from the BaseQuest class public class SimpleQuest : BaseQuest { void Start () {}

 // the "old" QuestText method from BaseQuest gets overwritten
 public override string QuestText()
 {
     return ("I am a simple quest!");
 }

}

// an advanced quest is a quest - so it derives from the BaseQuest class public class AdvancedQuest : BaseQuest { void Start () {}

 // the "old" QuestText method from BaseQuest gets overwritten
 public override string QuestText()
 {
     return ("I am an advanced quest!");
 }

}

public class QuestHandler : MonoBehaviour {

 // This list handles all the quests
 private List<BaseQuest> quests;

 void Start ()
 {
     // the quests list gets created
     quests = new List<BaseQuest>();

     // collecting all the quests from the GameObject (the player)
     Component[] questsComps = gameObject.GetComponents(typeof(BaseQuest));  
     foreach(Component comp in questsComps)
     {
         // adding the quest to the list
         addQuest(comp as BaseQuest);
     }

     // each quest shows his message
     foreach (BaseQuest quest in quests)
         // here comes the magic - type polymorphism!
         // all quests in the list derive from BaseQuest, which has this function
         // all the derived quests override the QuestText function with their own behaviour
         Debug.Log(quest.QuestText());
 }

 void addQuest(BaseQuest q)
 {
     // adding the quest to the list
     quests.Add(q);
 }

}