Disable GUI?

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1

Hello Guys, well I´ve been trying to deactivate a Gui button but I haven´t been able to do it yet. Here is an example of my problem:

if(Time.timeScale == 0) {
    // Create button.  
    if (GUI.Button (Rect (115,100,250,50), "Options")) { 
        //Here I need to disable that button to bring up the options menu 
        //Then if options is clicked I disable it. Then I create a slider:
        if(optionsOn)
            camRotation = GUI.HorizontalSlider (Rect (40, 40, 150, 80), camRotation, 0.0, 35.0); 
    }
}

How can I easily disable the Gui button to bring up some other stuff?
Can you guys give me an example?

[Edit by Berenger : Code formatting]

Well, just put an if-statement around that entire section, and use that to determine whether it should be drawn or not!

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1 Answer

1
2

This smells like a job for a state machine - maybe something like this:

private var state = 1;
private var option;

function OnGUI(){
  if (Time.timeScale == 0){ // only shows options when timeScale is zero
    switch (state){
      case 1: // state 1 shows the first button:
        if (GUI.Button(Rect(115,100,250,50), "Options"){ // when button pressed...
          state = 2; // change to state 2...
          option = 0; // and set invalid option value
        }
        break;
      case 2: // state 2 shows the options:
        if (GUI.Button(Rect(115,100,250,50), "Option 1") option = 1;
        if (GUI.Button(Rect(115,120,250,50), "Option 2") option = 2;
        if (GUI.Button(Rect(115,140,250,50), "Option 3") option = 3;
        if (GUI.Button(Rect(115,160,250,50), "Option 4") option = 4;
        if (option > 0) state = 3; // if any option set, change to state 3
        break;
      case 3: // state 3 shows the slider:
        camRotation = GUI.HorizontalSlider (Rect (40, 40, 150, 80), camRotation, 0.0, 35.0);
        // button Done finishes the cycle and returns to state 1:
        if (GUI.Button(Rect(115,140,150,50), "Done") state = 1; 
        break;
    }
  }
}

Definitely the preferred way to handle this, as it is expandable.

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hmm interesting way of going about this problem never used it before... thanks ill make sure to try it out even if this isnt my question!

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I'd really prefer to use a state machine with an enum so it's easier to read, instead of having states like 0, 1, and 2 can be really confusing and hard to expand on and change later on. Use something like public enum State { first, options, slider } private State m_state; And then switch your 'm_state' variable.

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@Dewald117, I used numbers only to show the basic idea. You're right: an enum is much better and elegant! From my own experience, after a few days we just can't remember anymore what the hell each state means...

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Exellent, Thank you very much!!

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