Help with inventory system

Unity Engine
1

I’m working on an inventory system for my game, and I need help. I have this code which can change between 4 items, but for some reason, true and false don’t work with GameObjects (I heard it’s setActive or something). I don’t know, here’s my script, what do I do?

var radio : GameObject;
var lighter : GameObject;
var pipe : GameObject;
var none : GameObject;

function Start () {
    none.enabled = true;
    radio.enabled = false;
    lighter.enabled = false;
    pipe.enabled = false;
}

function Update () {
    if (Input.GetButtonUp ("Fire2") && Input.GetAxis ("Vertical") > 0.5)
        if(lighter.enabled == false){
         lighter.enabled = true;
         radio.enabled = false;
         pipe.enabled = false;
         none.enabled = false;
    }
    if (Input.GetButtonUp ("Fire2") && Input.GetAxis ("Vertical") < 0.5)
        if(none.enabled == false){
         none.enabled = true;
         radio.enabled = false;
         pipe.enabled = false;
         lighter.enabled = false;
    }
    if (Input.GetButtonUp ("Fire2") && Input.GetAxis ("Horizontal") > 0.5)
        if(pipe.enabled == false){
         pipe.enabled = true;
         radio.enabled = false;
         lighter.enabled = false;
         none.enabled = false;
    }
    if (Input.GetButtonUp ("Fire2") && Input.GetAxis ("Horizontal") < 0.5)
        if(radio.enabled == false){
         radio.enabled = true;
         lighter.enabled = false;
         pipe.enabled = false;
         none.enabled = false;
    }

    }

Thanks!

2

You are totally correct in regards to using SetActive()

3

I got these errors. What did I do wrong?

var radio : GameObject;
var lighter : GameObject;
var pipe : GameObject;
var none : GameObject;

function Start () {
    none.SetActive (true);
    radio.SetActive (false);
    lighter.SetActive (false);
    pipe.SetActive (false);
}

function Update () {
    if (Input.GetButtonUp ("Fire2") && Input.GetAxis ("Vertical") > 0.5)
        if(lighter.SetActive (false)){
         lighter.SetActive (true);
         radio.SetActive (false);
         pipe.SetActive (false);
         none.SetActive (false);
    }
    if (Input.GetButtonUp ("Fire2") && Input.GetAxis ("Vertical") < 0.5)
        if(none.SetActive (false)){
         none.SetActive (true);
         radio.SetActive (false);
         pipe.SetActive (false);
         lighter.SetActive (false);
    }
    if (Input.GetButtonUp ("Fire2") && Input.GetAxis ("Horizontal") > 0.5)
        if(pipe.SetActive (false)){
         pipe.SetActive (true);
         radio.SetActive (false);
         lighter.SetActive (false);
         none.SetActive (false);
    }
    if (Input.GetButtonUp ("Fire2") && Input.GetAxis ("Horizontal") < 0.5)
        if(radio.SetActive (false)){
         radio.SetActive (true);
         lighter.SetActive (false);
         pipe.SetActive (false);
         none.SetActive (false);
    }

    }

Error:
Assets/inventorySystem.js(22,35): BCE0026: ‘void’ cannot be used in a boolean context.

4

SetActive changes the “active” value you can’t use that to check if the gameobject is active (the setting function doesn’t have a return type so it returns “void”, hence the error, using a void and expecting a boolean)

you need to use “activeSelf” or “activeInHierarchy” to check if the gameobject is currently active
http://docs.unity3d.com/ScriptReference/GameObject.html

5

I don’t quite understand. That’s the same thing I added to my script, and the link didn’t work.

6

Okay, I checked it out, and I couldn’t find any examples of a script. Could you show me what I’d have to do?

7

none.SetActive will set the activity of the GameObject, not retrieve it, its return type is void, not bool.

is very detailed concerning the use of this property.

if (none.activeSelf)
{
}

will execute just fine.