CangJie/Assets/Scripts/乐/ItemController.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class ItemController : UnitySingleton<ItemController>
{
    
    int displayIndex=0;
    Item displayItem;
    
    public List<Item> itemList = new List<Item>();

    Player player;

    void Start()
    {
        player = FindObjectOfType<Player>();
        Display();
    }

    // Update is called once per frame
    void Update()
    {
        
    }
    
    //添加物品
    public void AddItem(Item item) {
        itemList.Add(item);
    }

    /// <summary>
    ///  用于Player获取物品
    /// </summary>
    public Item GetItem() {
        return itemList[displayIndex];
    }

    /// <summary>
    ///  用于强制改变Player的物品
    /// </summary>
    public void SetItem()
    {
        if(itemList[displayIndex]!=null)
        player.weapon = itemList[displayIndex];

    }

    /// <summary>
    /// 展示正在使用的物品
    /// </summary>
    public void Display() {
        SetItem();
        displayItem = Instantiate(itemList[displayIndex],Vector3.zero,Quaternion.identity,transform);
        displayItem.transform.localPosition = Vector3.zero;
    }

    public void LeftChangeItem() {
        player.WeaponReturn();
        Destroy(displayItem.gameObject);
        displayIndex = (displayIndex - 1 + itemList.Count)%itemList.Count;       
        Display();
        player.WeaponInPosition();
    }
    public void RightChangeItem()
    {
        player.WeaponReturn();
        Destroy(displayItem.gameObject);
        displayIndex = (displayIndex + 1)%itemList.Count;       
        Display();
        player.WeaponInPosition();
    }

    public void ToLastestItem() {
        player.WeaponReturn();
        Destroy(displayItem.gameObject);
        displayIndex = itemList.Count-1;
        Display();        
        player.WeaponInPosition();
    }

    public void ReplaceItem(Item newItem) {
        player.WeaponReturn();
        Destroy(displayItem.gameObject);
        itemList[displayIndex] = newItem;
        Display();
        player.WeaponInPosition();
    }
}