[SOLVED] How to check if bool is true from another script? [SOLVED]

I need help again, i am still new. How do you check if a bool = true, from a different script. Do you put it in the start function or update function? This is for when a ui button is pressed.

 

The simplest way is to make it a public member of the class it is in, like this:

Code (CSharp):

1. public class InputTracker : MonoBehaviour
2. {
3.     public bool IsPressed;
4.  
5.     void Update()
6.     {
7.         IsPressed = Input.GetButton("ButtonName");
8.     }
9. }

Attach an

InputTracker

script to your

GameObject

and then obtain a reference to it from any other by getting it as a

Component

, like this:

Code (CSharp):

1. public class InputReader : MonoBehaviour
2. {
3.     public GameObject InputObject;
4.  
5.     InputTracker inputTracker;
6.  
7.     void Start()
8.     {
9.         inputTracker = InputObject.GetComponent<InputTracker>();
10.     }
11.  
12.     void Update()
13.     {
14.         if (inputTracker.IsPressed)
15.         {
16.             // Do whatever.
17.         }
18.     }
19. }

But this would be kind of silly because you can query

Input.GetButton

from any code, without the need to save its state in a separate bool.

Now, making member variables public in C# is frowned upon. Unfortunately, it's a fundamental aspect of writing C# code for Unity, so you will do it a lot. But you should limit public members to variables you need to access from the Unity Inspector. For others, use properties, like this:

Code (CSharp):

1. public class InputTracker : MonoBehaviour
2. {
3.     private bool isPressed;
4.  
5.     public bool IsPressed
6.     {
7.         get
8.         {
9.             return isPressed;
10.         }
11.  
12.         set
13.         {
14.             isPressed = value;
15.         }
16.     }
17.  
18.     void Update()
19.     {
20.         IsPressed = Input.GetButton("ButtonName");
21.     }
22. }

Note that I have used capitalization to distinguish between the private member

isPressed

and the public property

IsPressed

. Using capitalization to distinguish between variables in C# is also frowned upon, but doing it in this case (where the private member stores the state of a public property) is treated by some people as a legitimate exception, and I'm one of those people (others may see it differently).

Read up a bit on "access modifiers" and "properties" and this will all make a lot more sense to you.

 

I got an error on that get Input.GetButton..... says go to edit >> settings and add a button. Mine is actually a button on the screen. Not a button on the keyboard or mouse. Let me try the other part first.

 

Thanks, it worked out perfectly. Keeps my script all organized.