Input

Overview

This folder contains runtime utilities for mouse/tap input. The classes allow you to:

• Cast raycasts from clicks using the new Input System.
• Define a contract for clickable objects.
• Handle UI/drag events with callbacks and drag direction.

ClickInputManager

ClickInputManager listens to a pointer position and a click action (Input System) and casts a ray from Camera.main. If multiple colliders implementing IClickable overlap under the pointer, it selects the one with the highest Priority and invokes OnClick with that hit point in world space.

Primary usage

• Assign the InputActionReference assets for position and click in the Inspector.
• Set the raycast distance.
• Implement IClickable on the objects that should react to clicks.

using GameUtils;
using UnityEngine;

public class ClickableTarget : MonoBehaviour, IClickable
{
    public int Priority => 10;

    // Reacts to the click received from ClickInputManager.
    public void OnClick(Vector3 hitPoint)
    {
        Debug.Log($"Clicked at {hitPoint}");
    }
}

IClickable

Interface for raycast-clickable objects. Priority determines which object wins when multiple clickables overlap under the pointer; higher values win. Implement OnClick(Vector3 hitPoint) to receive the selected hit point.

IMouseInput

Interface that aggregates EventSystems handlers for click, drag, drop, and hover. It exposes assignable actions and useful properties:

• MousePosition (current mouse position).
• DragDirection (estimated drag direction).

UIMouseInputProvider

UIMouseInputProvider implements IMouseInput on a MonoBehaviour with a collider. It requires a PhysicsRaycaster on the MainCamera and translates EventSystems callbacks into configurable Action<PointerEventData>.

Primary usage

• Ensure the main camera has a PhysicsRaycaster.
• Add UIMouseInputProvider and a collider to the 3D/World UI GameObject.
• Subscribe to the actions through the IMouseInput reference.

using GameUtils;
using UnityEngine;

public class MouseInputConsumer : MonoBehaviour
{
    void Awake()
    {
        // Retrieves the provider and subscribes to the required callbacks.
        IMouseInput provider = GetComponent<IMouseInput>();
        if (provider == null)
        {
            return;
        }

        provider.OnPointerClick += eventData =>
        {
            Debug.Log("Pointer click received.");
        };

        provider.OnBeginDrag += eventData =>
        {
            Debug.Log($"Drag started in direction {provider.DragDirection}");
        };
    }
}

DragDirection

Enum that describes the estimated drag direction: None, Down, Left, Top, Right.