vuforia-unity virtual button enabling or disabling teapot

Question

I have created virtual button in Unity-Vuforia by following tutorial. It works successfully without any glitch. The problem is I tried to enable or disable teapot upon press or release. I have tried the following code for changing materials:

public void OnButtonPressed(VirtualButtonAbstractBehaviour vb)
{
    Debug.Log("OnButtonPressed: " + vb.VirtualButtonName);

    if (!IsValid())
    {
        return;
    }

    // Add the material corresponding to this virtual button
    // to the active material list:
    switch (vb.VirtualButtonName)
    {
        case "red":
            mActiveMaterials.Add(m_TeapotMaterials[0]);
            break;

        case "blue":
            mActiveMaterials.Add(m_TeapotMaterials[1]);
            break;

        case "yellow":
            mActiveMaterials.Add(m_TeapotMaterials[2]);
            break;

        case "green":
            mActiveMaterials.Add(m_TeapotMaterials[3]);
            break;
    }

    // Apply the new material:
    if (mActiveMaterials.Count > 0)
        mTeapot.GetComponent<Renderer>().material = mActiveMaterials[mActiveMaterials.Count - 1];
}

/// <summary>
/// Called when the virtual button has just been released:
/// </summary>
public void OnButtonReleased(VirtualButtonAbstractBehaviour vb)
{
    if (!IsValid())
    {
        return;
    }

    // Remove the material corresponding to this virtual button
    // from the active material list:
    switch (vb.VirtualButtonName)
    {
        case "red":
            mActiveMaterials.Remove(m_TeapotMaterials[0]);
            break;

        case "blue":
            mActiveMaterials.Remove(m_TeapotMaterials[1]);
            break;

        case "yellow":
            mActiveMaterials.Remove(m_TeapotMaterials[2]);
            break;

        case "green":
            mActiveMaterials.Remove(m_TeapotMaterials[3]);
            break;
    }

    // Apply the next active material, or apply the default material:
    if (mActiveMaterials.Count > 0)
        mTeapot.GetComponent<Renderer>().material = mActiveMaterials[mActiveMaterials.Count - 1];
    else
        mTeapot.GetComponent<Renderer>().material = m_TeapotMaterials[4];
}
#endregion //PUBLIC_METHODS

Somebody could point me how will I enable.teapot.gameobject upon 'red'button pressed and disable teapot gameobject upon 'red' button released?

Answer 1

First of all you have to have a reference to your teapot gameobject. So at the top where you declare your variables add this:

public GameObject teaPotGameObject;

Assign teapot to this slot in the inspector. Then in the OnButtonPressed() function after case "red": add this line:

teaPotGameObject.SetActive(true);

And well, I guess you already know what to do in OnButtonReleased() function :))