====== Play an animation on grip button press ======

> This article was written for "UniVCI-0.15."
=== Example data ===
https://virtualcast.jp/products/9bd2f446cc30815fd18fa7e66b7cd62e0b8dc43cb666d435e5474ab224888bfe

To execute a process when the grip button is pressed, use "**onUse**".

In this example, we will create a process that plays an animation\\
when the grip button is pressed against a certain "VCI SubItem".\\

1. Create a new GameObject and create a Cube as its child.\\
\\
In this example, we named the GameObject "UseAnimation_VCI," but it can be anything really.\\
Let's name the Cube "**Cube**."\\
Specify Y-axis value of the Cube to 1 so that it doesn't go through the floor.

2. Attach an "**Animator**" component on the Cube,\\
Create an "**Animation**" and associate it with a state in the Animator.\\
Name the Animation file "**UseAnimationAction**".\\
* Refer to Unity manual for the details of manipulating an Animation.\\
[[https://docs.unity3d.com/2018.1/Documentation/Manual/animeditor-CreatingANewAnimationClip.html]]

3. Attach a "**VCI Object**" component on the GameObject,\\
and attach the "**VCI SubItem**" component on the Cube.\\
When doing this, "RigidBody" components are also attached automatically.\\
As the Cube won't be using gravity, turn off **Use Gravity** and turn on **Is Kinematic**.

4. On the VCI Object component in the GameObject, set the Scripts Size as **1**.\\
Enter "main.lua" in the Name and paste the script shown below.

<file lua main.lua>
function onUse(use)
    if use == "Cube" then
        vci.assets._ALL_PlayAnimationFromName("UseAnimationAction", false)
    end
end
</file>