Change property of certain gameobjects without looping through them

Question

Hi, I am wondering if there is a function built into Unity that lets you change properties of certain GameObjects without looping through them. Let's say I have a simple script called "HasSpeed" with just the property speed.

 public class HasSpeed : MonoBehaviour
 {
     public float Speed = 1.0f;
 }

In a different script I want to change "Speed" without looping through all of the GameObjects. Here is what I don't want (There are many different ways to get the objects but in essence I would have to loop through them):

 public class ChangeAllObjectsWithSpeed : MonoBehaviour
 {
     void Update()
     {
         if(Input.GetKeyDown(KeyCode.W))
         {
             HasSpeed[] speedScripts = (HasSpeed[]) GameObject.FindObjectsOfType (typeof(HasSpeed));
             foreach(var current in speedScripts)
             {
                 current.Speed = 0.5f;
             }
         }
     }
 }

I just want to know if there is a Unity built-in way to handle those kind of things. Is there something which I can use to achieve what I want?

Answer 1

Best Answer

Answer by xxmariofer · Dec 03, 2020 at 01:13 PM

No there is no such a thing, but if you want all the HasSpeed objects to have the same speed you could simply do

      void Update()
      {
          if(Input.GetKeyDown(KeyCode.W))
          {       
              HasSpeed.Speed = 0.5f;
          }
      }

and

 public class HasSpeed : MonoBehaviour
  {
      public static float Speed = 1.0f;
  }

but this will make all the scripts share the same speed

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AlexDFKI · Dec 03, 2020 at 01:23 PM 0

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Thank you very much for your answer. I don't want to argue here which is the best/most performant way to handle things, I just want to know the possibilities. Are there any other possibilities that come to $$anonymous$$d?

xxmariofer AlexDFKI · Dec 03, 2020 at 01:31 PM 0

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"With Prefabs you can change the color of all other Prefabs when you change it in the editor" thats basically what an static variable would do, changing the variable would affect all the instances of that class. static variables are variables shared among all the instance of the script to keep it simple

Change property of certain gameobjects without looping through them

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