2025TapTapGameJam/Assets/Script/Gameplay/Player/PlayerInteractorController.cs

using UnityEngine;
using Script.Gameplay.Interface;
using System;
using Core;
using Script.Gameplay.Input;

namespace Script.Gameplay.Player
{
    public class PlayerInteractorController : MonoBehaviour
    {
        [SerializeField] private FirstPersonRaycaster raycaster; // 新增：第一人称射线检测器
        [SerializeField] private bool isEnablePlayerInteraction = true; // 是否启用玩家交互功能

        private IInteractable currentTarget;
        private IInteractable CurrentTarget
        {
            get => currentTarget;
            set
            {
                currentTarget = value;
                if (currentTarget != null)
                {
                    // 可以在这里添加一些逻辑，比如显示交互提示UI
                    OnGazeEnter?.Invoke(this.gameObject);
                }
                else
                {
                    // 可以在这里隐藏交互提示UI
                    OnGazeExit?.Invoke(this.gameObject);
                }
            }
        } // 被射线命中的当前可交互对象（用于按键交互）
        private IInteractable previousGazedTarget; // 上一次注视的对象（用于注视进入/离开事件）
        
        public event Action<GameObject> OnGazeEnter;
        public event Action<GameObject> OnGazeExit;

        void Start()
        {
            if (raycaster == null)
                raycaster = GetComponent<FirstPersonRaycaster>() ?? GetComponentInChildren<FirstPersonRaycaster>();
            if (raycaster == null)
                raycaster = FindObjectOfType<FirstPersonRaycaster>();
            if (raycaster == null)
                Debug.LogWarning("FirstPersonRaycaster not found! Please assign or add it to the player.");
            
            var input = InputManager.Instance.Input;
            input.Player.Interact.performed += ctx =>
            {
                if(CurrentTarget == null) return;
                if (!CurrentTarget.IsEnableInteract) return;
                CurrentTarget.Interact(this.gameObject);
            };
            
            ControllerLocator.Instance.Register(this);
        }

        void Update()
        {
            DetectInteractable();
        }

        void DetectInteractable()
        {
            if (raycaster == null) return;
            if (!isEnablePlayerInteraction) return;

            GameObject lookAtObj = raycaster.CurrentLookAtObject;
            IInteractable hitInteractable = lookAtObj != null ? lookAtObj.GetComponent<IInteractable>() : null;

            // 如果命中对象与之前注视的不一样，触发进入/离开事件
            if (hitInteractable != previousGazedTarget)
            {
                // if (previousGazedTarget != null)
                // {
                //     previousGazedTarget.OnGazeExit(this.gameObject);
                // }
                //
                // if (hitInteractable != null)
                // {
                //     hitInteractable.OnGazeEnter(this.gameObject);
                //     // 这里可以显示交互提示UI，例如 “E - 开门”
                //     //Debug.Log(hitInteractable.GetInteractPrompt());
                // }

                previousGazedTarget = hitInteractable;
            }

            CurrentTarget = hitInteractable;
        }
        
        public void SetPlayerInteractionEnabled(bool isEnabled)
        {
            isEnablePlayerInteraction = isEnabled;
            if (!isEnabled && previousGazedTarget != null)
            {
                // previousGazedTarget.OnGazeExit(this.gameObject);
                previousGazedTarget = null;
                CurrentTarget = null;
            }
        }

        void OnDrawGizmos()
        {
            // 交由 FirstPersonRaycaster 绘制射线
        }
    }
}