Decreasing value gradually in non-monobehaviour class

Hello everyone,

I'm working on a spell casting system,I have created base Spell class that doesn't inherit from anything so I don't have Update() function.
I have two variables that I use for cooldown

Code (csharp):

1. private float _cooldownTime;
2. private float _cooldownTimer;

now I'm wondering if there is a way to decrease my cooldown timer if it is bigger than zero,basically calling this function every frame

Code (csharp):

1. if(CooldownTimer > 0) {
2.     CooldownTimer -= Time.deltaTime;
3.     Debug.Log(CooldownTimer);
4. }

Thanks

 

Generally, we have spell data in a C# class. I'm guessing there is something in the game that is tracking spells that are being cast. That SpellTracker class will either need to extend MonoBehaviour, or some MonoBehaviour class is going to have to run the SpellTracker on it's Update() cycle.

 

The pure C# way of handling this would be to use the Timer class.
http://msdn.microsoft.com/en-us/library/system.timers.timer%28v=vs.110%29.aspx

 

SpellTracker is a good idea,thanks

 

The question is. Do you really need the spell class to continuously count? Most of the time you don't, instead you can compare the last time the spell was used, against the current time.

Example code, untestet and typed right inside browser

Code (csharp):

1.  
2. using UnityEngine;
3.  
4. public class Spell
5. {
6.     // the stored time the spell was last used
7.     private float _lastTimeUsed;
8.  
9.     private float _coolDownTime;
10.  
11.     public Spell()
12.     {
13.         // set the last timne used to the negative value of cool down time
14.         // this way we can cast the spell right away
15.         _lastTimeUsed = -_coolDownTime;
16.     }
17.  
18.     public bool CanCast()
19.     {
20.         return Time.time >= _lastTimeUsed + _coolDownTime;
21.     }
22.  
23.     public void CastSpell()
24.     {
25.         // if we can't cast the spell return, else "reset" time
26.         if( CanCast() == false )
27.             return;
28.         else
29.             _lastTimeUsed = Time.time;
30.  
31.         // Do Work
32.     }
33.  
34. }
35.  
36.  
37.  

 

That is a very good idea Thank you!