Make picture change on tap

Hi K-bilsoy, I created a little script to do this. 

First create an empty project by selecting File->New Project from the menu bar. Then, create a script called “ToggleBillboards” and add the following to its contents.

// -----JS CODE-----
// @input Component.SpriteVisual billboardSpriteA
// @input Component.SpriteVisual billboardSpriteB

var audioComponent = null;
var toggle = false;

function onTurnOn( eventData )
{
    global.touchSystem.touchBlocking = true;
    global.touchSystem.enableTouchBlockingException("TouchTypeDoubleTap", true);
    global.touchSystem.enableTouchBlockingException("TouchTypeSwipe", true);
 
    toggle = false;
    toggleBillboard();
}
var turnOn = script.createEvent("TurnOnEvent");
turnOn.bind(onTurnOn);
 
function onTap( eventData )
{
    toggleBillboard();
}
var tap = script.createEvent("TapEvent");
tap.bind(onTap);

function toggleBillboard() 
{
    if( !script.billboardSpriteA || !script.billboardSpriteB ) 
    {
        print( "TOGGLE BILLBOARDS: Make sure to set your billboards in the Inspector panel!")
        return;
    }

    // Toggle billboard
    if( !toggle ) 
    {
        script.billboardSpriteA.enabled = true;
        script.billboardSpriteB.enabled = false;
        tryAnimation( script.billboardSpriteA );
        toggle = true;
    }
    else
    {
        script.billboardSpriteB.enabled = true;
        script.billboardSpriteA.enabled = false;
        tryAnimation( script.billboardSpriteB ); 
        toggle = false; 
    } 
}

function tryAnimation( billboard ) 
{
    // Play animation
    var control = billboard.getMaterial(0).getPass(0).baseTex.control;
    if( control && control.play )
    {
        control.play(1, 0.0); 
    } 
}

Create an empty object and add a Script Component in the Inspector Panel to that object. Then, add “ToggleBillboards” to the new Script component. Make sure the event drop down is set to “Initialized”.

Finally, create two 2D Billboard objects. Then, link your two 2D Billboards to the “ToggleBillboards” script. Press the refresh button in the Preview panel and then tap it to see your Lens working. Note, the "ToggleBillboards" script optionally supports animation playback so if you Billboard has animation, it will try to play it. Have fun!