Make no button held an input?

Unity Engine
1

I have a code that switches between 4 arrows when you press either A, S, W, or D. Here’s the script…

var radio : UnityEngine.UI.Graphic;
var lighter : UnityEngine.UI.Graphic;
var pipe : UnityEngine.UI.Graphic;
var none : UnityEngine.UI.Graphic;
function Start () {
    radio.enabled = false;
    lighter.enabled = false;
    pipe.enabled = false;
    none.enabled = true;
}
function Update () {
    if (Input.GetButton("Fire2") && Input.GetKeyDown("d"))
         {
         lighter.enabled = true;
         radio.enabled = false;
         pipe.enabled = false;
         none.enabled = false;
         }
   
    if (Input.GetButton("Fire2") && Input.GetKeyDown("s"))
         {
         radio.enabled = false;
         pipe.enabled = false;
         lighter.enabled = false;
         none.enabled = true;
         }
   
    if (Input.GetButton("Fire2") && Input.GetKeyDown("a"))
         {
         none.enabled = false;
         pipe.enabled = true;
         radio.enabled = false;
         lighter.enabled = false;
         }

    if (Input.GetButton("Fire2") && Input.GetKeyDown("w"))
         {
         pipe.enabled = false;
         radio.enabled = true;
         lighter.enabled = false;
         none.enabled = false;
         }
}

I want to make it so that the variable none also equals true when neither W, A, S, or D is held. Sort of like a default arrow or resting state. How could I do this?

2

Set up a Boolean flag, for example called hasInput, and set it true when ever an input is pressed and at the begginning of Update set hasInput to false.

3

I just tried it, and I think it would work, but the booleans are always true. Why is that?

var radio : UnityEngine.UI.Graphic;
var lighter : UnityEngine.UI.Graphic;
var pipe : UnityEngine.UI.Graphic;
var none : UnityEngine.UI.Graphic;
var wInput : boolean;
var aInput : boolean;
var dInput : boolean;
function Start () {
    radio.enabled = false;
    lighter.enabled = false;
    pipe.enabled = false;
    none.enabled = true;
}
function Update () {
    if (Input.GetButton("Fire2") && Input.GetKeyDown("d"))
         {
         lighter.enabled = true;
         radio.enabled = false;
         pipe.enabled = false;
         none.enabled = false;
         }
   
    if (Input.GetButton("Fire2") && Input.GetKeyDown("s"))
         {
         radio.enabled = false;
         pipe.enabled = false;
         lighter.enabled = false;
         none.enabled = true;
         }
   
    if (Input.GetButton("Fire2") && Input.GetKeyDown("a"))
         {
         none.enabled = false;
         pipe.enabled = true;
         radio.enabled = false;
         lighter.enabled = false;
         }

    if (Input.GetButton("Fire2") && Input.GetKeyDown("w"))
         {
         pipe.enabled = false;
         radio.enabled = true;
         lighter.enabled = false;
         none.enabled = false;
         }

    if (wInput && aInput && dInput)
         {
         pipe.enabled = false;
         radio.enabled = false;
         lighter.enabled = false;
         none.enabled = true;
         }

    if(Input.GetKeyDown("w"))
    {
    wInput = false;
    }
    else
    {
    wInput = true;
    }

    if(Input.GetKeyDown("a"))
    {
    aInput = false;
    }
    else
    {
    aInput = true;
    }

    if(Input.GetKeyDown("d"))
    {
    dInput = false;
    }
    else
    {
    dInput = true;
    }
}
4

probably what you want

if (Input.GetButton("Fire2"))
{
    //set defaults
    pipe.enabled = false;
    radio.enabled = false;
    lighter.enabled = false;
    none.enabled = true;
   
    if(Input.GetKeyDown("d"))
    {
        lighter.enabled = true;
        none.enabled = false;
    } else if(Input.GetKeyDown("a"))
    {
        lighter.enabled = true;
        none.enabled = false;
    } else if(Input.GetKeyDown("w"))
    {
        radio.enabled = true;
        none.enabled = false;
    }
}
5

I honestly have no idea what this [variablename].enabled is. Is this how JS handles booleans? I use C# so I wouldn’t know.

6

Thanks! It works really well!