how to structure multiple units with different unit abilities.

Hey, trying to sort out how to structure multiple units

Let's say there are 2 types of units. Harvesters and Fighters. They are both derived from the Unit class.

I want to be able to call PerformTick on the Unit class, and have HarvesterUnit or FighterUnit take an action.
In this way I can have many different units with unique actions, just by writing a script for each.

What is a good way to achieve this effect?

What should I use to build a modular action system? (Inheritence? Scriptable Objects? Some sort of component based design?)

public class Unit : MonoBehaviour {

    public void PerformAction(){

//Tell the unit to take their action (somehow?)

    }

}



public class Harvester : Unit {

    public void PerformAction(){

//DO HARVESTER STUFF

//Walk 3 tiles

//collect resource

    }

}



public class Fighter : Unit {

    public void PerformAction(){

//DO FIGHTER STUFF

//walk 10 tiles

//fight enemy

    }

}

 

Please make sure you're using code tags https://forum.unity.com/threads/using-code-tags-properly.143875/
The inline code tags are better than nothing, but inserting the code makes it a lot easier to read.

Let me know if you have any questions.

Code (CSharp):

1. public MainClass : MonoBehaviour
2. {
3.   List<Unit> units = new List<Unit>(); //https://msdn.microsoft.com/en-us/library/6sh2ey19(v=vs.90).aspx                          
4.   //http://www.tutorialsteacher.com/csharp/csharp-list                                                                                  
5.  
6.   Awake()//Or Start() https://unity3d.com/learn/tutorials/topics/scripting/awake-and-start                                  
7.   {
8.     units.Add(new Haverster());
9.     units.Add(new Fighter());
10.   }
11.  
12.   Update()
13.   {
14.     foreach(Unit u in units)
15.     {
16.       u.PerformAction();
17.     }
18.   }
19. }
20.  
21. public class Unit
22. {
23.   abstract public void PerformAction();
24.   //https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/keywords/abstract                              
25. }
26.  
27. public class Harvester : Unit
28. {
29. override public void PerformAction()
30.    {
31.     //DO HARVESTER STUFF                                                                                                                
32.     //Walk 3 tiles                                                                                                                      
33.     //collect resource                                                                                                                  
34.   }
35. }
36.  
37. public class Fighter : Unit
38. {
39.   override public void PerformAction()
40.    {
41.     //DO FIGHTER STUFF                                                                                                                  
42.     //walk 10 tiles                                                                                                                      
43.     //fight enemy                                                                                                                        
44.   }
45. }
46.  

Quick mock code may or may not have the correct capitlization and spelling

 

Ah, I see what was going on!
I was keeping a reference to UNIT for both fighter/harvester instead of keeping a reference to the actual inherited class.
So I was calling the wrong method.
Thanks!

 

No problem man