Creating Quests in Unity

Well, since the question is very vague, and I have a lot of time, I will go over the aspects of a quest system that I think you need.

What is important in a quest? Well, you need to have a start, and end, and possibly some conditions as to if you can finish. For example, this could be a quest:

• At inn, learn that there are creatures menacing the town, and that there is a 100 amount reward for killing 10 of them.

• A quest description (e.g. how much the quest is worth (100), where it starts (inn), what the objective is (kill 10), and where it ends (inn)),

• A dialog system, the is flexible enough to display the quest information,

• A way to give the player that quest description,

• And last but very much not least, a way of determining when to kick off the dialog.

  ---

• Now go and kill 10 enemies

• First, you need a HP system, and a method of notifying when a creature is killed

• Then, you need to notify some sort of quest handler, that checks what the quest needs (in this case, kills) and if there is match with a possible quest event, decrements/increments that number.

• Once the requisite number of enemies has been killed, show another dialog that you have succeeded, and go back to the start.

  ---

• Go back to the inn and get the reward

• First, you need a mechanism of determining you are in the inn, in the right spot, which you presumably have from the first step.

• Then, you need to show a dialog of the reaction to your success

• Then, add the 100 to the players wallet, then quest over.

In terms of implementation, I would go for a OOP/MVC based system, where the quest description if the model, the view is the GUI, and the controller both updates the view and checks for the objectives. I would have a Quest class that was built up from a string that would describe the quest, and would be changed by the controller. This architecture would also enable quest creation by a writer.---

Tutorial rpg full: http://www.burgzergarcade.com/hack-slash-rpg-unity3d-game-engine-tutorial

I've just created a code for the quest giver, to show the player if he has a quest or not.

 using UnityEngine;
 using System.Collections;
 
 public class questGiver : MonoBehaviour {
     public bool onQuest;
     
     public GameObject questMark;
     
     public Material questMarkedOn;
     public Material questMarkedOff;
 
     // Update is called once per frame
     void Update () {
         if(onQuest) {
             questMark.renderer.material = questMarkedOn;
         }
         else {
             questMark.renderer.material = questMarkedOff;    
         }
     }
 }

so in the quest marked on you should fill in a Eg. a yellow renderer, and in quest marked on you should fill in a invisible renderer.

and in the quest mark its gonna be your object that could be a 3d question mark. and if the quest giver is on a quest you simply checks on the checkbox saying on quest.

and the quests you would have to create piece for piece.