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

using System;
using System.Collections;
using System.Collections.Generic;
using Core;
using UnityEngine;
using UnityEngine.Events;
using Script.Gameplay.Interface;
using Script.Gameplay.Input;
using UI;
using UnityEngine.InputSystem;

namespace Script.Gameplay.Player
{
    public class PlayerDialogueController : MonoBehaviour
    {
        [SerializeField] private bool isEnablePlayerDialogue = true; // 是否启用玩家对话功能  
        [SerializeField] private FirstPersonRaycaster firstPersonRaycaster; // 第一人称射线检测器
        private bool isReadingDialogue = false;
        public event Action OnPlayerBeginDialogue;
        public event Action OnPlayerEndDialogue;
        public event Action<GameObject> OnGazeEnterDialogue;
        public event Action<GameObject> OnGazeExitDialogue;
        
        private InputManager inputManager;
        
        private Queue<string> dialogueQueue = new Queue<string>();
        private PlayerDialogueViewer playerDialogueViewer;

        private IDialogue previousDialogue;
        private IDialogue currentDialogueTarget;
        public IDialogue CurrentDialogueTarget
        {
            get => currentDialogueTarget;
            set
            {
                previousDialogue = currentDialogueTarget;
                currentDialogueTarget = value;
                if (previousDialogue != currentDialogueTarget)
                {
                    if (currentDialogueTarget != null)
                    {
                        OnGazeEnterDialogue?.Invoke((currentDialogueTarget as MonoBehaviour)?.gameObject);
                    }
                    if (previousDialogue != null)
                    {
                        OnGazeExitDialogue?.Invoke((previousDialogue as MonoBehaviour)?.gameObject);
                    }
                }
            }
        }

        void Start()
        {
            if (firstPersonRaycaster == null)
                firstPersonRaycaster = GetComponent<FirstPersonRaycaster>() ??
                                       GetComponentInChildren<FirstPersonRaycaster>();
            if (firstPersonRaycaster == null)
                firstPersonRaycaster = FindObjectOfType<FirstPersonRaycaster>();
            if (firstPersonRaycaster == null)
                Debug.LogWarning("FirstPersonRaycaster not found! Please assign or add it to the player.");

            inputManager = InputManager.Instance;
            var input = inputManager.Input;
            input.Player.Read.performed += OnReadOnperformed;
            input.Player.ShowNextDialogue.performed += OnShowNextDialogueOnperformed;

            ControllerLocator.Instance.Register(this);
        }

        private void OnShowNextDialogueOnperformed(InputAction.CallbackContext ctx)
        {
            if (!isEnablePlayerDialogue) return;
            if (CurrentDialogueTarget == null) return;
            if (!isReadingDialogue) return;
            PassNextDialogue();
        }

        private void OnReadOnperformed(InputAction.CallbackContext ctx)
        {
            if (!isEnablePlayerDialogue) return;
            if (CurrentDialogueTarget == null) return;
            if (isReadingDialogue) return;
            BeginDialogue();
        }

        void Update()
        {
            DetectDialogue();
        }

        private void DetectDialogue()
        {
            if (!isEnablePlayerDialogue || firstPersonRaycaster == null) return;
            GameObject lookAtObj = firstPersonRaycaster.CurrentLookAtObject;
            IDialogue hitDialogue = lookAtObj != null ? lookAtObj.GetComponent<IDialogue>() : null;
            CurrentDialogueTarget = hitDialogue;
        }

        private void BeginDialogue()
        {
            if (CurrentDialogueTarget != null)
            {
                isReadingDialogue = true;
                OnPlayerBeginDialogue?.Invoke();
                CurrentDialogueTarget.OnBeginDialogue?.Invoke(true);
                dialogueQueue = SplitDialogue(CurrentDialogueTarget.DialogueContent);
                inputManager.SetInputForLook(false);
                inputManager.SetInputForMove(false);
                PassNextDialogue();
            }
        }

        private void PassNextDialogue()
        {
            if (CurrentDialogueTarget != null)
            {
                if (dialogueQueue.Count == 0)
                {
                    EndDialogue();
                    return;
                }

                string nextDialogue = dialogueQueue.Dequeue();
                if (playerDialogueViewer != null)
                {
                    playerDialogueViewer.ReceiveDialogue(nextDialogue);
                }
            }
        }

        private void EndDialogue()
        {
            if (CurrentDialogueTarget != null)
            {
                isReadingDialogue = false;
                OnPlayerEndDialogue?.Invoke();
                CurrentDialogueTarget.OnEndDialogue?.Invoke(true);
                inputManager.SetInputForLook(true);
                inputManager.SetInputForMove(true);
                if (playerDialogueViewer != null)
                {
                    playerDialogueViewer.ClosePanel();
                }
                // 可扩展：隐藏UI、恢复输入等
            }
        }

        private Queue<string> SplitDialogue(string content)
        {
            // 按换行分段
            return new(content.Split(new[] { '\n' }, StringSplitOptions.RemoveEmptyEntries));
        }

        public void RegisterDialogueViewer(PlayerDialogueViewer viewer)
        {
            playerDialogueViewer = viewer;
        }

        public void SetPlayerDialogueEnabled(bool isEnabled)
        {
            isEnablePlayerDialogue = isEnabled;
            if (!isEnabled)
            {
                CurrentDialogueTarget = null;
            }
        }

        private void OnDestroy()
        {
            ControllerLocator.Instance.Unregister<PlayerDialogueController>(this);

            if (inputManager != null)
            {
                var input = inputManager.Input;
                input.Player.Read.performed -= OnReadOnperformed;
                input.Player.ShowNextDialogue.performed -= OnShowNextDialogueOnperformed;
            }
        }
    }
}