UGTK / Toolkit / Utility Systems / Invisibile Mouse System Completed

Invisibile Mouse System

Summary

One component that keeps the mouse cursor permanently hidden across Editor, Standalone and WebGL. Cursor.visible = false alone is not enough in practice: a browser, a UI package or another script can turn the cursor back on at any time, and in WebGL the pointer is drawn by the page, not by Unity. This component re-applies the hidden state every frame and on every focus/resume, and on WebGL also sets cursor: none on the canvas through a bundled .jslib plugin.

It is what you want on a totem, a kiosk, an arcade cabinet or any touch-only build.

Modules Dependencies

None on the UGTK side. On WebGL it calls its own bundled plugin, Plugins/WebGL/UGTK_InvisibileMouseSystemWebGL.jslib, which ships with the module.

Setup

Drop the InvisibleMouse prefab into the scene — an empty GameObject carrying Mn_InvisibileMouseSystem. There is nothing to wire: from the moment it is enabled, the cursor is gone.

Or add the component to any GameObject that survives as long as you want the cursor hidden.

How To Use

Two inspector options, and that is the whole configuration:

Lock Mode When Hidden (CursorLockMode, default None): the lock state applied together with the hiding. None leaves the pointer free (it is simply invisible), Locked captures it at the centre of the window — the usual choice for a first-person camera — and Confined keeps it inside the window.
Restore On Disable (default off): when true, disabling the component brings the cursor back (visible, unlocked, and on WebGL the canvas CSS cursor restored). Leave it off when the object is destroyed on a scene change and you do not care; turn it on when you toggle the component to show a menu.

To show the cursor again, disable or remove the component (or its GameObject). There is no Show() method: the state is re-asserted in Update, so anything that sets Cursor.visible = true from outside is undone on the next frame.

// hide
invisibleMouse.enabled = true;

// show again (with Restore On Disable turned on)
invisibleMouse.enabled = false;

Good to know:

It re-applies in Awake, OnEnable, Update, OnApplicationFocus and OnApplicationPause. The Update cost is two property assignments per frame — negligible, and it is the only way to win against code that fights for the cursor.
In the Editor the Game view still shows the system cursor when the window is not focused: check the real behaviour in a build, not in the editor.
Locked mode in WebGL requires a user gesture (a click) before the browser grants pointer lock: the cursor hides immediately, the lock arrives at the first click.
The .jslib call only exists in a WebGL build (UNITY_WEBGL && !UNITY_EDITOR), so nothing changes in the editor or on other platforms.

Testing Scene

Open Debug/InvisibleMouseScene.unity and press Play: the cursor disappears over the Game view and stays gone even after clicking away and back.

Technical Info

Path	Content
`Scripts/Runtime/Mn_InvisibileMouseSystem.cs`	The component: `Apply()` called from `Awake`/`OnEnable`/`Update`/focus/pause, optional restore in `OnDisable`, `[DllImport("__Internal")]` for the WebGL path
`Plugins/WebGL/UGTK_InvisibileMouseSystemWebGL.jslib`	Browser-side plugin: toggles `cursor: none` on the Unity canvas
`Prefabs/InvisibleMouse.prefab`	Ready-made GameObject with the component
`Debug/InvisibleMouseScene.unity`	Test scene