InputSystem Components

Main Components

InputManager

The central input component and the only place where raw mouse and touch input is read. It:

• Reads input each frame in Update, using mouse handling on desktop and touch handling on Android.
• Owns a ClickDetector and a DoubleClickDetector, and feeds them press and release data.
• Raycasts each press against the EventSystem and calls IInteractable.OnInteraction on matching components.
• Exposes all gesture events as public delegate fields such as Clicked, DoubleClicked, and DragStarted.

Typical use: subscribe through InputManager.Instance in your component's Start method, and unsubscribe in OnDisable.

InputHandler

A MonoBehaviour that connects InputManager to the UI system. It:

• Subscribes to Clicked and DoubleClicked on InputManager.Instance in Start.
• Forwards each click to the UI pointer-click event and each double-click to the UI double-click event, using UIEventFactory.
• Unsubscribes in OnDisable.

Use it when UI or gameplay code should listen to the EventBus instead of the InputManager delegates.

Key Event and Data Classes

ClickDetector

Plain C# class that tracks press time and raises OnClick when a press and release fall within InputConstants.ClickThreshold. Created by InputManager with that constant and this. It subscribes to Pressed and Released and has no unsubscribe method.

DoubleClickDetector

Plain C# class that takes timestamps from the caller through RegisterClick and raises OnDoubleClick for two clicks within its threshold. InputManager calls it on every press, not on every completed click. Drags call Reset on it.

InputConstants

Static class with one constant, ClickThreshold (0.2 seconds). This value is the click window used by ClickDetector.

Handler and Listener Interfaces

IInteractable

Implemented by components that should respond to a press on their GameObject. InputManager finds these on the hit object and its parents and calls OnInteraction.

IInteractionResponder

Defines OnInteracted for components that respond after an interaction.

Interaction with Dependency Classes

UIEventFactory

Used only by InputHandler. The factory creates and raises UI events on the EventBus. InputHandler calls it for clicks, passing the screen position, and for double-clicks. Listeners on the EventBus get those events without referencing InputManager.

EventBus

Receives the UI events raised through UIEventFactory. This system has no direct reference to it.