Touchscreen input

A touchscreen-focused input module for Unity's EventSystem, with pan/pinch gesture detection and multi-touch mouse simulation.

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Requirements Install Setup Development aids Next

com.bluecadet.touchscreen replaces Unity’s StandaloneInputModule with TouchscreenInputModule, an EventSystem input module built for multi-touch installations. TouchGestureListener layers pan and pinch gesture detection on top of any UI element that receives pointer events.

Requirements

Unity 6000.3+
Unity Input System package, already installed in the consuming project

HEADS UP

package.json declares no dependencies. The Input System requirement is expressed only as an Unity.InputSystem reference in the package’s assembly definition, not as a package manifest dependency. If the Input System isn’t already installed in your project, this package will not compile.

Install

OpenUPM is the recommended path:

openupm add com.bluecadet.touchscreen

The scoped registry (https://package.openupm.com, scope com.bluecadet) only needs adding once per project.

To install from a Git URL instead, point at the release tag, which follows the com.bluecadet.touchscreen@<version> format:

json

{
  "dependencies": {
    "com.bluecadet.touchscreen": "https://github.com/bluecadet/unity-packages.git?path=Packages/com.bluecadet.touchscreen#com.bluecadet.touchscreen@<version>"
  }
}

Pick a version from Releases — every released tag is listed there. The openupm add form above always takes the latest.

Setup

TouchscreenInputModule

Add TouchscreenInputModule to the EventSystem GameObject.
Disable or remove the default StandaloneInputModule on the same GameObject — only one input module should be active.
Assign the three serialized fields in the inspector:

Inspector field	Backing field	Type	Purpose
Actions Asset	`m_ActionsAsset`	`InputActionAsset`	The action asset containing the point/click actions below.
Point Action	`m_PointAction`	`InputActionReference`	Drives pointer position.
Click Action	`m_ClickAction`	`InputActionReference`	Drives pointer down/up.

TouchscreenInputModule exposes a single public member beyond these fields: public override void Process(), called by the EventSystem each frame.

TouchGestureListener

Add TouchGestureListener to a GameObject with a raycastable UI graphic. It implements IPointerDownHandler, IPointerUpHandler, and IDragHandler, and exposes six public UnityEvent<T> fields for pan and pinch gestures. Wire them in the inspector, or subscribe via .AddListener(...) in code.

See gestures for the full event and data-type reference.

Development aids

Multi-touch simulation

MultiTouchSimulator is a plain C# class, constructed internally by TouchscreenInputModule — there’s nothing to add to a scene.

Hold Alt to simulate a second touch point. The mouse controls one point; a mirrored point is generated for the other.
While Alt is held, Shift switches the simulated pair from translate mode to rotate/scale mode.

Scene-view gizmos

PointerGizmoRenderer is a static class with one member:

csharp

public static void DrawPointerGizmos(Dictionary<int, PointerEventData> pointerData, bool isMultiTouchSimulationActive);

TouchscreenInputModule calls this from its protected OnDrawGizmos to visualize active and simulated touch points in the Scene view while the EventSystem GameObject is selected.

Gestures — pan and pinch event tables, complete data-type reference, and VelocityTracker.