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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;
    var turnOn = script.createEvent("TurnOnEvent");

    function onTap( eventData )
    var tap = script.createEvent("TapEvent");

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

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

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  • I'll try this now. Thank you 


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  • How do you make it so you don't have to tap to trigger the second animation?

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  • And can you add a third to the sequence?

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  • Hey Carly, we actually just released a template that's going to allow you to do what you want without any scripting. Basically, it allows you to chain together states of showing / hiding objects that transition on tap or time. All of it is tuned in the inspector and objects panel so you don't have to every write any code. 

    New template can be found in the update which you can download here:

    Check out the template overview video here:

    And the template guide if you need additional info:

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  • I'm unable to zoom. Tried a few stuff but, my billboard zooms with the image. Any fix?

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  • Hi Hazim,

    I answered in another thread too, but you can enable zoom by adding this code:

    global.touchSystem.enableTouchBlockingException("TouchTypeScale", true);


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