HussienX72u
107 lines
3.5 KiB
C#
107 lines
3.5 KiB
C#
using System.Collections.Generic;
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using UnityEngine;
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using UnityEngine.Events;
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/// <summary>
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/// Manages selection state for placed interactable objects.
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/// Listens to RayInteractor.OnSelectEvent (which only fires when no ghost is active).
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/// Supports single and multi-select (Ctrl/Shift).
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/// </summary>
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public class SelectionManager : MonoBehaviour
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{
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private static SelectionManager instance;
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public static SelectionManager getInstance() => instance;
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private RayInteractor rayInteractor;
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private BaseInputProvider inputProvider;
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private readonly List<IInteractable> currentSelections = new List<IInteractable>();
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private bool multiSelectEnabled = false;
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public UnityEvent<IInteractable> SelectionEvent;
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// -------------------------------------------------------------------------
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// Unity lifecycle
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// -------------------------------------------------------------------------
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private void Awake()
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{
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if (instance == null) instance = this;
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else Destroy(gameObject);
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}
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private void Start()
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{
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rayInteractor = RayInteractor.getInstance();
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inputProvider = InputProviderManager.getInstance().getCurrentInputProvider();
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inputProvider.OnEnableMultiSelect.AddListener(() => multiSelectEnabled = true);
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inputProvider.OnDisableMultiSelect.AddListener(() => multiSelectEnabled = false);
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// RayInteractor only fires this when no ghost is active, so we can safely handle selection here
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rayInteractor.OnSelectEvent.AddListener(HandleSelect);
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}
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// -------------------------------------------------------------------------
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// Selection logic
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// -------------------------------------------------------------------------
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private void HandleSelect(IInteractable interactable)
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{
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if (InputModeManager.Is(InputMode.UI)) return;
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if (interactable == null)
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{
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SelectionEvent?.Invoke(interactable);
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// Clicked empty space – clear selection unless multi-select is held
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if (!multiSelectEnabled)
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ClearSelection();
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return;
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}
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if (multiSelectEnabled)
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{
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// Toggle the clicked interactable
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if (currentSelections.Contains(interactable))
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{
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currentSelections.Remove(interactable);
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interactable.highLightOff();
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}
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else
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{
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currentSelections.Add(interactable);
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interactable.highLightOn();
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}
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}
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else
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{
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// Replace selection with just this interactable
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bool Exists = currentSelections.Contains(interactable);
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ClearSelection();
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if (!Exists) {
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currentSelections.Add(interactable);
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interactable.highLightOn();
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}
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}
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SelectionEvent?.Invoke(interactable);
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}
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// -------------------------------------------------------------------------
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// Public API
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// -------------------------------------------------------------------------
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public List<IInteractable> GetCurrentSelections() => currentSelections;
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public void ClearSelection()
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{
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foreach (IInteractable selection in currentSelections)
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selection.highLightOff();
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currentSelections.Clear();
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SelectionEvent?.Invoke(null);
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}
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public bool HasOneSelection()
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{
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return !(currentSelections.Count > 1 || currentSelections.Count == 0);
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}
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} |