using System.Collections.Generic; using UnityEngine; public enum InteractionType { None = 0, PickUp, Cook, Talk }; public class InteractionManager : MonoBehaviour { [HideInInspector] public InteractionType currentInteractionType; //This is checked by conditions in the StateMachine [SerializeField] private InputReader _inputReader = default; //To store the object we are currently interacting with private LinkedList _potentialInteractions = new LinkedList(); //Events for the different interaction types [Header("Broadcasting on")] [SerializeField] private ItemEventChannelSO _onObjectPickUp = default; [SerializeField] private VoidEventChannelSO _onCookingStart = default; [SerializeField] private DialogueActorChannelSO _startTalking = default; //UI event [SerializeField] private InteractionUIEventChannelSO _toggleInteractionUI = default; [Header("Listening to")] [SerializeField] private VoidEventChannelSO _onInteractionEnded = default; private void OnEnable() { _inputReader.interactEvent += OnInteractionButtonPress; _onInteractionEnded.OnEventRaised += OnInteractionEnd; } private void OnDisable() { _inputReader.interactEvent -= OnInteractionButtonPress; _onInteractionEnded.OnEventRaised -= OnInteractionEnd; } // Called mid-way through the AnimationClip of collecting private void Collect() { GameObject itemObject = _potentialInteractions.First.Value.interactableObject; _potentialInteractions.RemoveFirst(); if (_onObjectPickUp != null) { ItemSO currentItem = itemObject.GetComponent().GetItem(); _onObjectPickUp.RaiseEvent(currentItem); } Destroy(itemObject); //TODO: maybe move this destruction in a more general manger, to implement a removal SFX RequestUpdateUI(false); } private void OnInteractionButtonPress() { if (_potentialInteractions.Count == 0) return; currentInteractionType = _potentialInteractions.First.Value.type; switch (_potentialInteractions.First.Value.type) { case InteractionType.Cook: if (_onCookingStart != null) { _onCookingStart.RaiseEvent(); _inputReader.EnableMenuInput(); } break; case InteractionType.Talk: if (_startTalking != null) { _potentialInteractions.First.Value.interactableObject.GetComponent().InteractWithCharacter(); _inputReader.EnableDialogueInput(); } break; //No need to do anything for Pickup type, the StateMachine will transition to the state //and then the AnimationClip will call Collect() } } //Called by the Event on the trigger collider on the child GO called "InteractionDetector" public void OnTriggerChangeDetected(bool entered, GameObject obj) { if (entered) AddPotentialInteraction(obj); else RemovePotentialInteraction(obj); } private void AddPotentialInteraction(GameObject obj) { Interaction newPotentialInteraction = new Interaction(InteractionType.None, obj); if (obj.CompareTag("Pickable")) { newPotentialInteraction.type = InteractionType.PickUp; } else if (obj.CompareTag("CookingPot")) { newPotentialInteraction.type = InteractionType.Cook; } else if (obj.CompareTag("NPC")) { newPotentialInteraction.type = InteractionType.Talk; } if (newPotentialInteraction.type != InteractionType.None) { _potentialInteractions.AddFirst(newPotentialInteraction); RequestUpdateUI(true); } } private void RemovePotentialInteraction(GameObject obj) { LinkedListNode currentNode = _potentialInteractions.First; while (currentNode != null) { if (currentNode.Value.interactableObject == obj) { _potentialInteractions.Remove(currentNode); break; } currentNode = currentNode.Next; } RequestUpdateUI(_potentialInteractions.Count > 0); } private void RequestUpdateUI(bool visible) { if (visible) _toggleInteractionUI.RaiseEvent(true, _potentialInteractions.First.Value.type); else _toggleInteractionUI.RaiseEvent(false, InteractionType.None); } private void OnInteractionEnd() { switch (currentInteractionType) { case InteractionType.Cook: case InteractionType.Talk: //We show the UI after cooking or talking, in case player wants to interact again RequestUpdateUI(true); break; } _inputReader.EnableGameplayInput(); } }