Add buttons that move the parts

Goal: let learners move the parts by pressing buttons.

Every moving part understands three commands:

Command	What it does
Positive	Moves towards the upper limit, and stops there.
Negative	Moves towards the lower limit, and stops there.
Stop	Stops wherever the part is.

There are two ways to give learners buttons for these.

The easy way: let the tool build a control panel

1. Set up all the moving parts of the machine first.
2. In the tool, open step 4 Controls.
3. Press Create XR Movement Controls.

The tool builds a panel called <machine> - Movement Controls, 1.5 m in front of the machine and facing the same way. It has one row per moving part, labelled with the part's name and its Display Name, each with a Positive, Negative and Stop button. The buttons are connected for you.

Move the panel where you want it in the Scene view, then save the scene with Ctrl+S.

Clear labels on the panel

Before creating the panel, give each movement a clear Display Name in step 3 Movement, for example Door or Feed slider.

Set up all parts first

The panel covers the movements that exist when you press the button. If you add a part later, delete the panel in the Hierarchy and create it again.

The flexible way: use your own buttons

Use this when you want buttons in specific places, for example a push button placed with Button Injection.

Find the button's event list

Select the button in the Hierarchy and expand it if needed, until you find:

Button kind	Look for the component	Use the event
Flat button	Button	On Click ()
Push button model, or a flat button with Also react to being touched	XR Simple Interactable	Select Entered, under Interactable Events

Connect a command

1. In the event list, press + to add an entry.
2. Drag the moving part from the Hierarchy into the empty object field of the new entry.
3. Open the No Function dropdown, choose LinearKinematicMovement or RotationalKinematicMovement, then the command: StartPositive (), StartNegative () or Stop ().
4. Save the scene with Ctrl+S.

Common setups

You want	Button and event	Command
An Open button	On Click / Select Entered	StartPositive
A Close button	On Click / Select Entered	StartNegative
Move only while held (push buttons)	Select Entered, and Select Exited	StartPositive, and Stop
Start and stop a wheel	Two buttons	StartPositive, and Stop

Good to know

• The panel needs an Event System in the scene. Without one, the panel isn't created and the Console shows a warning. Ask whoever set up the scene to add an Event System with an XR UI Input Module.
• Pressing the same command twice does nothing extra. A part already moving in that direction carries on.