创建可交互的物体的公共的父类（Interactable）

InteractableObject 类

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.AI;/// <summary>
/// NPC和Pickable的父类
/// </summary>public class InteractableObject : MonoBehaviour
{private NavMeshAgent playerAgent;private bool haveInteeacted;标志位（是否进行交互过，默认每次点击只交互一次）public void OnClick(NavMeshAgent playerAgent)//将 NavMeshAgent 组件传递过来。{this.playerAgent = playerAgent;playerAgent.stoppingDistance = 2;与被交互的物体设置的边距（保证不穿模）。playerAgent.SetDestination(transform.position);//设置目标位置让其移到附近。haveInteeacted = false;//添加上这个便可以将面板再次显示。}private void Update(){if(playerAgent != null && haveInteeacted == false && playerAgent .pathPending==false){if(playerAgent.remainingDistance<=2)//到达目标位置才进行交互。{Interact();//交互haveInteeacted = true;}}}protected virtual void Interact(){print("Interacting with Interactable Object.");}
}

NPCObject 类

using System.Collections;
using System.Collections.Generic;
using UnityEngine;/// <summary>
/// 定义NPC
/// </summary>public class NPCObject : InteractableObject//继承自InteractableObject
{public new string name;//public string Name {  get; set; }public string[] contentList;//public DialogueUI dialogueUI;protected override void Interact(){//dialogueUI.Show(name, contentList);DialogueUI.Instance.Show(name, contentList);}
}

PickableObject 类

using System.Collections;
using System.Collections.Generic;
using UnityEngine;/// <summary>
/// 定义Pickable的动作
/// </summary>public class PickableObject : InteractableObject
{public ItemScriptObject itemSO;//用来表示哪个Itemprotected override void Interact(){Destroy(this.gameObject);InventoryManager.Instance.AddItem(itemSO); }
}