Unity类银河恶魔城学习记录12-3 p125 Limit Inventory Slots源代码

Alex教程每一P的教程原代码加上我自己的理解初步理解写的注释，可供学习Alex教程的人参考
此代码仅为较上一P有所改变的代码

【Unity教程】从0编程制作类银河恶魔城游戏_哔哩哔哩_bilibili

Inventory.cs

using Newtonsoft.Json.Linq;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;

public class Inventory : MonoBehaviour
{
    public static Inventory instance;

    public List<ItemData> startingItem;

    public List<InventoryItem> equipment;//inventoryItems类型的列表
    public Dictionary<ItemData_Equipment, InventoryItem> equipmentDictionary;//以ItemData为Key寻找InventoryItem的字典

    public List<InventoryItem> inventory;//inventoryItems类型的列表
    public Dictionary<ItemData, InventoryItem> inventoryDictionary;//以ItemData为Key寻找InventoryItem的字典

    public List<InventoryItem> stash;
    public Dictionary<ItemData, InventoryItem> stashDictionary;

    [Header("Inventory UI")]

    [SerializeField] private Transform inventorySlotParent;
    [SerializeField] private Transform stashSlotParent;
    [SerializeField] private Transform equipmentSlotParent;
    [SerializeField] private Transform statSlotParent;


    private UI_itemSlot[] inventoryItemSlot;//UI Slot的数组
    private UI_itemSlot[] stashItemSlot;
    private UI_equipementSlots[] equipmentSlot;
    private UI_Statslot[] statSlot;

    [Header("Items cooldown")]
    private float lastTimeUsedFlask;
    private float lastTimeUsedArmor;
    private float flaskCooldown;
    private float armorCooldown;

    private void Awake()
    {
        if (instance == null)
            instance = this;
        else
            Destroy(gameObject);
        //防止多次创建Inventory
    }

    public void Start()
    {
        inventory = new List<InventoryItem>();
        inventoryDictionary = new Dictionary<ItemData, InventoryItem>();


        stash = new List<InventoryItem>();
        stashDictionary = new Dictionary<ItemData, InventoryItem>();

        equipment = new List<InventoryItem>();
        equipmentDictionary = new Dictionary<ItemData_Equipment, InventoryItem>();


        inventoryItemSlot = inventorySlotParent.GetComponentsInChildren<UI_itemSlot>();//拿到的方式有点绕，显示拿到Canvas 里的 Inventory 然后通过GetComponentsInChildren拿到其下的使用UISlot
        stashItemSlot = stashSlotParent.GetComponentsInChildren<UI_itemSlot>();
        equipmentSlot = equipmentSlotParent.GetComponentsInChildren<UI_equipementSlots>();
        statSlot = statSlotParent.GetComponentsInChildren<UI_Statslot>();
        AddStartingItems();
    }

    private void AddStartingItems()
    {
        for (int i = 0; i < startingItem.Count; i++)
        {
            AddItem(startingItem[i]);
        }
    }//设置初始物品

    public void EquipItem(ItemData _item)
    {
        //解决在itemdata里拿不到子类equipment里的enum的问题
        ItemData_Equipment newEquipment = _item as ItemData_Equipment;//https://www.bilibili.com/read/cv15551811/
        //将父类转换为子类
        InventoryItem newItem = new InventoryItem(newEquipment);

        ItemData_Equipment oldEquipment = null;

        foreach (KeyValuePair<ItemData_Equipment, InventoryItem> item in equipmentDictionary)//这种方法可以同时拿到key和value保存到item里面
        {
            if (item.Key.equipmentType == newEquipment.equipmentType)//将拿到的key与转换成itemdata_equipment类型的_item的type对比拿到存在的key
            {
                oldEquipment = item.Key;//此key需保存在外部的data类型里
                //equipment.Remove(item.Value);
                //equipmentDictionary.Remove(item.Key);
            }
        }//好像用foreach里的value和key无法对外部的list和字典进行操作

        if (oldEquipment != null)
        {
            AddItem(oldEquipment);
            Unequipment(oldEquipment);
        }
            

        equipment.Add(newItem);
        equipmentDictionary.Add(newEquipment, newItem);
        RemoveItem(_item);
        newEquipment.AddModifiers();
        UpdateSlotUI();
        
    }//装备装备的函数

    public void Unequipment(ItemData_Equipment itemToRemove)//装备其他同类型的装备时。去除已装备的装备
    {
        if (equipmentDictionary.TryGetValue(itemToRemove, out InventoryItem value))
        {
            
            equipment.Remove(value);
            equipmentDictionary.Remove(itemToRemove);
            
            itemToRemove.RemoveModifiers();
            UpdateSlotUI();
        }
    }

    private void UpdateSlotUI()
    {

        for (int i = 0; i < equipmentSlot.Length; i++)
        {
            //此步骤用于将对应类型的武器插入对应的槽内
            foreach (KeyValuePair<ItemData_Equipment, InventoryItem> item in equipmentDictionary)//这种方法可以同时拿到key和value保存到item里面
            {
                if (item.Key.equipmentType == equipmentSlot[i].slotType)
                {
                    equipmentSlot[i].UpdateSlots(item.Value);
                }
            }

        }
        //解决出现UI没有跟着Inventory变化的bug
        for (int i = 0; i < inventoryItemSlot.Length;i++)
        {
            inventoryItemSlot[i].CleanUpSlot();
        }
        for (int i = 0; i < stashItemSlot.Length; i++)
        {
            stashItemSlot[i].CleanUpSlot();
        }

        for (int i = 0; i < inventory.Count; i++)
        {
            inventoryItemSlot[i].UpdateSlots(inventory[i]);
        }

        for (int i = 0; i < stash.Count; i++)
        {
            stashItemSlot[i].UpdateSlots(stash[i]);
        }

        for(int i = 0; i < statSlot.Length;i++)
        {
            statSlot[i].UpdateStatValueUI();
        }
    }//更新UI函数

    public void AddItem(ItemData _item)
    {
        if (_item.itemType == ItemType.Equipment && CanAddItem())//修复Inventory数量大于Slot能存放的数量时报错的Bug
        {
            AddToInventory(_item);
        }
        else if (_item.itemType == ItemType.Material)
        {
            AddToStash(_item);
        }


        UpdateSlotUI();
    }//添加物体的函数

    private void AddToStash(ItemData _item)//向stash加物体的函数
    {
        if (stashDictionary.TryGetValue(_item, out InventoryItem value))//只有这种方法才能在查找到是否存在key对应value是否存在的同时，能够同时拿到value，其他方法的拿不到value
        {
            value.AddStack();
        }//字典的使用，通过ItemData类型的数据找到InventoryItem里的与之对应的同样类型的数据
        else//初始时由于没有相同类型的物体，故调用else是为了初始化库存，使其中含有一个基本的值
        {
            InventoryItem newItem = new InventoryItem(_item);
            stash.Add(newItem);//填进列表里只有一次
            stashDictionary.Add(_item, newItem);//同上
        }
    }

    private void AddToInventory(ItemData _item)
    {
        if (inventoryDictionary.TryGetValue(_item, out InventoryItem value))//只有这种方法才能在查找到是否存在key对应value是否存在的同时，能够同时拿到value，其他方法的拿不到value
        {
            value.AddStack();
        }//字典的使用，通过ItemData类型的数据找到InventoryItem里的与之对应的同样类型的数据
        else//初始时由于没有相同类型的物体，故调用else是为了初始化库存，使其中含有一个基本的值
        {
            InventoryItem newItem = new InventoryItem(_item);
            inventory.Add(newItem);//填进列表里只有一次
            inventoryDictionary.Add(_item, newItem);//同上
        }
    }//将物体存入Inventory的函数

    public void RemoveItem(ItemData _item)//修复Inventory数量大于Slot能存放的数量时报错的Bug
    {
        if (inventoryDictionary.TryGetValue(_item, out InventoryItem value))
        {
            if (value.stackSize <= 1)
            {
                inventory.Remove(value);
                inventoryDictionary.Remove(_item);

            }
            else
                value.RemoveStack();
        }

        if (stashDictionary.TryGetValue(_item, out InventoryItem stashValue))
        {
            if (stashValue.stackSize <= 1)
            {
                stash.Remove(stashValue);
                stashDictionary.Remove(_item);
            }
            else
                stashValue.RemoveStack();
        }

        UpdateSlotUI();
    }
    public bool CanAddItem()//通过Inventory数量和Slot能存放的数量进行对比，确定是否可以添加新的装备到装备槽
    {
        if(inventory.Count >= inventoryItemSlot.Length)
        {
            Debug.Log("No more space");
            return false; 
        }
        return true;
    }
    public List<InventoryItem> GetEquipmentList() => equipment;
    public List<InventoryItem> GetStashList() => stash;

    public ItemData_Equipment GetEquipment(EquipmentType _Type)//通过Type找到对应的已装备装备的函数
    {
        ItemData_Equipment equipedItem = null;

        foreach (KeyValuePair<ItemData_Equipment, InventoryItem> item in equipmentDictionary)
            if (item.Key.equipmentType == _Type)
            {
                equipedItem = item.Key;
            }

        return equipedItem;
    }
    public void UseFlask()//使用药瓶设置冷却时间
    {
        ItemData_Equipment currentFlask = GetEquipment(EquipmentType.Flask);

        if (currentFlask == null)
            return;
        //使用药瓶设置冷却时间
        
        bool canUseFlask = Time.time > lastTimeUsedFlask + flaskCooldown;
        

        if(canUseFlask)
        {
            flaskCooldown = currentFlask.itemCooldown;
            currentFlask.Effect(null);
            lastTimeUsedFlask = Time.time;
        }
        else
        {
            Debug.Log("Flask is Cooldown");
        }
    }//使用药瓶函数

    public bool CanUseArmor()
    {
        ItemData_Equipment currentArmor = GetEquipment(EquipmentType.Armor);

        if(Time.time > lastTimeUsedArmor + armorCooldown)
        {
            lastTimeUsedArmor = Time.time;
            armorCooldown = currentArmor.itemCooldown;
            return true;
        }

        Debug.Log("Armor on cooldown");
        return false;
    }
}

\ItemObject.cs

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

public class ItemObject : MonoBehaviour
{
    private SpriteRenderer sr;

    [SerializeField] private Rigidbody2D rb;//设置速度
    [SerializeField] private ItemData ItemData;
    [SerializeField] private Vector2 velocity;//设置速度


    private void SetupVisuals()
    {
        if (ItemData == null)
            return;

        GetComponent<SpriteRenderer>().sprite = ItemData.icon;
        gameObject.name = ItemData.name;
    }
   
    public void SetupItem(ItemData _itemData,Vector2 _velocity)设置实例函数
    {
        ItemData = _itemData;
        rb.velocity = _velocity;//设置速度

        SetupVisuals();
    }

    public void PickupItem()//拾取函数打包
    {
        if(!Inventory.instance.CanAddItem()&&ItemData.itemType == ItemType.Equipment)//修复在Inventory满时捡钱装备并销毁它的bug
        {
            rb.velocity = new Vector2(0, 7);
            return;
        }
        Inventory.instance.AddItem(ItemData);
        Destroy(gameObject);
    }
}