How do I make ALL other booleans in a bool array false when one is true ?

Questions & Answers
1

I am working with boolean arrays and I have been having trouble getting all the booleans in an array to be false when one of them is set to true.

I have been trying this code but it does not work at all.



       private static bool SetUP,SetDown,SetLeft,SetRight;
        private static bool[] boolarray = {SetUP,SetDown,SetLeft,SetRight};
        
            bool SetBoolArrays(bool[] array, int lowVal, int highVal, bool State)
            {
               for (int i = lowVal; i < highVal; i++)  { array *= State; } return State;*

}

void OnGUI()
{
// make everything from position 1 to array.Lenth false

//method 1
if(boolarray[0])SetBoolArrays(boolarray,1,boolarray.Length,false); // does not work

//method 2
if (boolarray[0])
{
// will be set to true but will not be set to false when boolarray[1] is true
System.Array.Clear(boolarray, 0, boolarray.Length);
SetUp = true;
}

if (boolarray[1])
{
// will be set to true but will not be set to false when boolarray[0] is true
System.Array.Clear(boolarray, 0, boolarray.Length);
SetDown = true;
}

}

2

I would suggest taking a look at EnumFlags. It’s pretty much what you are trying to achieve but it has the advantage of mixing values and being much smaller on memory(Not that a bool is huge). There are some advanced stuff with the code below but it should be pretty simple to understand when you read over it.

using UnityEngine;
using System.Collections;

public class FlagTest : MonoBehaviour 
{
  /// <summary>
  /// The types of clothing our person can wear. It uses bitwise to
  /// give it the ability to have multiple  states. If everything
  /// were off it would be 000000000 and if everythign were on it would be 111111111. What
  /// we do is turn that ones we want on to 1. So say we wanted a dress with sandles it would
  /// be 0100001000.
  /// </summary>
  [System.Flags]
  private enum ClothingTypes : int
  {
    Hat =        1 << 0,
    Sandles =    1 << 1,
    Toga =       1 << 2,
    PaperBag =   1 << 3,
    Shorts =     1 << 4,
    PantSuit =   1 << 5,
    Dress =      1 << 6,
    Sunglasses = 1 << 7,
    Earings =    1 << 8,
    Socks =      1 << 9 // Bitshifting :) 
  }



  /// <summary>
  /// The clothing they are wearing now. 
  /// </summary>
  private ClothingTypes currentlyWearing; 

  public void Awake()
  {
    //Are we wearing a hat?
    Debug.Log( "Wearing Hat: " + HasFlag( ClothingTypes.Hat ) );

    //Well now we are
    SetFlag( ClothingTypes.Hat, true );

    //Lets just make sure we are wearing our hat
    Debug.Log( "Wearing Hat: " + HasFlag( ClothingTypes.Hat ) );

    //Now take the hat off
    SetFlag( ClothingTypes.Hat, false );

    //This just confirms that in fact we don't have a hat on anymore.
    Debug.Log( "Wearing Hat: " + HasFlag( ClothingTypes.Hat ) );

    //Now put on that dress
    SetFlag( ClothingTypes.Dress, true );

    //Are we wearing a dress with our sandles?
    Debug.Log("Wearing PantSuit & Sandles: " + HasFlag(ClothingTypes.Sandles | ClothingTypes.PantSuit));

    //Turns out we only had a dress on. Lets put on dem sandles
    SetFlag( ClothingTypes.Sandles, true );

    //We can now confirm that we are wearing a dress with our sandles
    Debug.Log( "Wearing PantSuit & Sandles: " + HasFlag( ClothingTypes.Sandles | ClothingTypes.PantSuit ) );

    //????

    //Profit!
  }

  /// <summary>
  /// Is this flag currently on?
  /// </summary>
  /// <param name="flags">What is the name of the flag?</param>
  /// <returns>If it's on our not</returns>
  private bool HasFlag( ClothingTypes flags )
  {
    return (currentlyWearing & flags) != 0;
  }

  /// <summary>
  /// Set the value of the flag. It can be anything you want if all you want is true of false.
  /// </summary>
  /// <param name="flags">The flag you want to set</param>
  /// <param name="val">If you want it true of false</param>
  private void SetFlag( ClothingTypes flags, bool val )
{
	if(val == true)
	{
    currentlyWearing |= flags;
	}
  else
  {
    currentlyWearing &= ~flags;
  }
}
}

You can then turn everything off by going

 currentlyWearing = 0

Edit:
As Bonfire Boy said I did not add the answer to your question. To turn all other bools off you could do

currentlyWearing = ClothingTypes.Hat;

// Or event all off but two
currentlyWearing = ClothingTypes.Hat | ClothingTypes.Toga
3

Still not quite clear to me, but one thing I think you’re not understanding is that when you do this

private static bool[] boolarray = {SetUP,SetDown,SetLeft,SetRight};

it’s creating an array containing 4 new bools which are initialised to the same values as those 4 variables. They’re not references to them.

So changing the values of SetDown, SetUp, etc has no impact on your array.

I think BMayne’s answer is pointing you in a good direction.