Disable button script

[redofpaw]

Hey folks,

Working on a Tower Defence game and I want to 'grey out' the buttons if the player cash is too low.
I can see a way to have a central 'player cash' variable located on a management object.

How would I then ensure the correct button in the UI is disabled based on the value of this variable (if 'cash' < 'tower value' then button disabled)?

I can apply an additional script to the button, but how does that script then tell the button to disable?

Coding in C#.

Thanks for any help!

[ArenMook]

1. button.isEnabled = yourCash > 123;

[redofpaw]

@ArenMook

Thanks - so I think I need to edit the actual 'UIButton' script, rather than add another script, is that right?

I tried your code, in a variety of places but the most I got was a malfunctioning button. Where exactly and in what context should it be placed so that it greys out the button (as in: it is a 'diabled' button from the point of view of NGUI).

Thanks again,

[ArenMook]

Eh? No. My code assumes that 'button' is a UIButton reference, and 'yourCash' is some variable of yours. It's pseudocode. UIButton has 'isEnabled' function that can enable/disable it, thus graying it out if you've set the disabled color accordingly.

[redofpaw]

Ah, wait I think I figured out what I need to do. Before writing this I wasn't sure I should be editing the UI Button script, but I see now where to alter it to get this working.

Thanks for your help.

[redofpaw]

Ok, so in theory that works, but now my new problem:

I want to add a public gameObject reference - this being the object I have the variableHolder script attached to in order to track player cash. However it will not show up as a field on the editor (UIButton script) to be able to 'drag and drop' the variableHolder object onto.

Is there a way, without using 'find object' to reference another gameObject on the UIButton script in this way?

Am I missing something simple and obvious?

EDIT: WAIT! This is even more confusing. Editing the UIButton script edits the script for ALL the buttons (of course). It seems like a bad idea for me to even be editing this script, yet how do I set 'isEnabled' = false on the UIButton script from a different script attached to the button. I am not particuarly experienced in coding, so if this is VERY simple and OBVIOUSLY obvious, then perhaps someone can explain it like I'm 5?

[ArenMook]

Ok, here's the full script for you. You should never modify NGUI's files unless you're an expert.

1. using UnityEngine;
2.  
3. public class Test : MonoBehaviour
4. {
5.     public int myValue = 50;
6.  
7.     void Update()
8.     {
9.         UIButton btn = GetComponent<UIButton>();
10.         btn.isEnabled = (myValue > 50);
11.     }
12. }

[redofpaw]

Thanks ArenMook! Makes a lot more sense now

I'm still learning, so some obvious scripting is lost on me.

Cheers!