【Unity教程】从0编程制作类银河恶魔城游戏_哔哩哔哩_bilibili

教程源地址：https://www.udemy.com/course/2d-rpg-alexdev/

本章节提升了物品栏的效果，同样地为物品效果加上了描述

UI_ItemSlot.cs

修改部分！！！

    public void OnPointerEnter(PointerEventData eventData)
    {
        if(item == null)
            return;

        Vector2 mousePosition = Input.mousePosition;

        float xOffset = 0;
        float yOffset = 0;


        if (mousePosition.x > 600)
            xOffset = -150;
        else
            xOffset = 150;//鼠标靠近屏幕右侧时，提示框向左偏移；否则向右偏移

        if (mousePosition.y > 320)

            yOffset = -150;
        else
            yOffset = 150;


        ui.itemToolTip.ShowToolTIp(item.data as ItemData_Equipment);//显示物品详情
        ui.itemToolTip.transform.position = new Vector2(mousePosition.x + xOffset, mousePosition.y + yOffset);//更新提示框位置为鼠标位置偏移后的点

using TMPro;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;

//物品数量的UI，放在ItemSlot上
// p105添加了Grad Layout Group，自动排列


public class UI_ItemSlot : MonoBehaviour, IPointerDownHandler, IPointerEnterHandler, IPointerExitHandler//实现接口
{
    [SerializeField] protected Image itemImage;// 物品图标
    [SerializeField] protected TextMeshProUGUI itemText;// 显示堆叠数量的文本

    protected UI ui;
    public InventoryItem item;// 当前物品槽中所显示的物品


    protected virtual void Start()
    {
        ui = GetComponentInParent<UI>();//获取UI组件
    }

    public void UpdataSlot(InventoryItem _newitem)//更新物品槽
    {
        item = _newitem;// 传入的新物品

        itemImage.color = Color.white;//获取了物品，itemslot透明变成白色，变得可见

        if (item != null)//列表中的物体不是空的
        {
            itemImage.sprite = item.data.icon;//获得图标

            if (item.stackSize > 1)
            {
                itemText.text = item.stackSize.ToString();//显示堆叠数量
            }
            else
            {
                itemText.text = "";//不显示数量
            }
        }
    }

    public void CleanUpSlot()清空物品槽
    {
        item = null;// 将物品槽内物品设为空

        itemImage.sprite = null;// 清除物品图标
        itemImage.color = Color.clear;// 让物品槽变得不可见

        itemText.text = ""; // 清空堆叠数量的显示
    }



    public virtual void OnPointerDown(PointerEventData eventData)//拾取之后点击物品,改成virtual之后可以被子类重写
    {
        if (item == null)//如果物品槽为空
            return;


        if (Input.GetKey(KeyCode.LeftControl))
        {
            Inventory.instance.RemoveItem(item.data);//移除物品
            return;
        }

        if (item.data.itemType == ItemType.Equipment)// 如果点击的物品是装备类型
            Inventory.instance.EquipItem(item.data);//装备物品

        ui.itemToolTip.HideToolTip();//隐藏物品详情
    }

    public void OnPointerEnter(PointerEventData eventData)
    {
        if(item == null)
            return;

        Vector2 mousePosition = Input.mousePosition;

        float xOffset = 0;
        float yOffset = 0;


        if (mousePosition.x > 600)
            xOffset = -150;
        else
            xOffset = 150;//鼠标靠近屏幕右侧时，提示框向左偏移；否则向右偏移

        if (mousePosition.y > 320)

            yOffset = -150;
        else
            yOffset = 150;


        ui.itemToolTip.ShowToolTIp(item.data as ItemData_Equipment);//显示物品详情
        ui.itemToolTip.transform.position = new Vector2(mousePosition.x + xOffset, mousePosition.y + yOffset);//更新提示框位置为鼠标位置偏移后的点
    }

    public void OnPointerExit(PointerEventData eventData)
    {
        if (item == null)
            return;

        ui.itemToolTip.HideToolTip();//隐藏物品详情
    }
}

ItemData_Equipment.cs

修改部分！！！

   public override string GetDescription()
   {
       sb.Length = 0;//确保每次调用时是从头开始
       descriptionLength = 0;//重置描述的属性数量

       AddItemDescription(strength, "力量");
       AddItemDescription(agility, "敏捷");
       AddItemDescription(intelligence, "智力");
       AddItemDescription(vitality, "活力");

       AddItemDescription(damage, "伤害");
       AddItemDescription(critChance, "暴击率");
       AddItemDescription(critPower, "暴击伤害");

       AddItemDescription(maxHealth, "生命值");
       AddItemDescription(armor, "护甲");
       AddItemDescription(evasion, "闪避");
       AddItemDescription(magicResistance, "魔抗");

       AddItemDescription(fireDamage, "火焰伤害");
       AddItemDescription(iceDamage, "冰霜伤害");
       AddItemDescription(lightningDamage, "闪电伤害");

       if (descriptionLength < 5)//确保最终返回的描述文本至少有 5 行内容
       {
           for (int i = 0; i < 5 - descriptionLength; i++)
           {
               sb.AppendLine();
               sb.Append("");//空行
           }
       }

       if (itemEffectDescription.Length > 0)
       {
           sb.AppendLine();
           sb.Append(itemEffectDescription);
       }

       return sb.ToString();//返回描述文本
   }

using System.Collections.Generic;
using Unity.VisualScripting;
using UnityEngine;


//2024年11月1日
public enum EquipmentType
{
    Weapon,
    Armor,
    Amulet,//护身符
    Flask//药水瓶
}

[CreateAssetMenu(fileName = "New Item Data", menuName = "Data/Equipment")]//因为继承了ItemData，所以在资源管理器中创建新的Item，创建的物品自带这个脚本

public class ItemData_Equipment : ItemData
{
    public EquipmentType equipmentType;

    [Header("独特效果")]
    public float itemCoolDown;//物品冷却时间
    public ItemEffect[] itemEffects;//可以添加物品的效果
    [TextArea]
    public string itemEffectDescription;//独特效果描述


    [Header("主属性")]
    public int strength;//力量，1点增加1攻击力和%1爆伤
    public int agility;//敏捷，1点增加1%闪避和%1暴击率
    public int intelligence;//智力，1点增加1法术强度和%1魔抗
    public int vitality;//活力，1点增加3生命值


    [Header("攻击属性")]
    public int damage;
    public int critChance;//暴击率
    public int critPower;//暴击伤害,默认%150



    [Header("防守属性")]
    public int maxHealth;
    public int armor;//护甲
    public int evasion;//闪避
    public int magicResistance;//魔抗


    [Header("魔法属性")]
    public int fireDamage;
    public int iceDamage;
    public int lightningDamage;


    [Header("制作需求")]//Craft requirements
    public List<InventoryItem> craftingMaterials;

    private int descriptionLength;


    public void Effect(Transform _enemyPositon)//执行物品效果
    {
        foreach (var item in itemEffects)
        {
            item.ExcuteEffect(_enemyPositon);
        }
    }


    public void AddModifiers()
    {
        PlayerStats playerStats = PlayerManager.instance.player.GetComponent<PlayerStats>();

        playerStats.strength.AddModifier(strength);
        playerStats.agility.AddModifier(agility);
        playerStats.intelligence.AddModifier(intelligence);
        playerStats.vitality.AddModifier(vitality);

        playerStats.damage.AddModifier(damage);
        playerStats.critChance.AddModifier(critChance);
        playerStats.critPower.AddModifier(critPower);

        playerStats.maxHealth.AddModifier(maxHealth);
        playerStats.armor.AddModifier(armor);
        playerStats.evasion.AddModifier(evasion);
        playerStats.magicResistance.AddModifier(magicResistance);

        playerStats.fireDamage.AddModifier(fireDamage);
        playerStats.iceDamage.AddModifier(iceDamage);
        playerStats.lightingDamage.AddModifier(lightningDamage);
    }

    public void RemoveModifiers()
    {
        PlayerStats playerStats = PlayerManager.instance.player.GetComponent<PlayerStats>();

        playerStats.strength.RemoveModifier(strength);
        playerStats.agility.RemoveModifier(agility);
        playerStats.intelligence.RemoveModifier(intelligence);
        playerStats.vitality.RemoveModifier(vitality);

        playerStats.damage.RemoveModifier(damage);
        playerStats.critChance.RemoveModifier(critChance);
        playerStats.critPower.RemoveModifier(critPower);

        playerStats.maxHealth.RemoveModifier(maxHealth);
        playerStats.armor.RemoveModifier(armor);
        playerStats.evasion.RemoveModifier(evasion);
        playerStats.magicResistance.RemoveModifier(magicResistance);

        playerStats.fireDamage.RemoveModifier(fireDamage);
        playerStats.iceDamage.RemoveModifier(iceDamage);
        playerStats.lightingDamage.RemoveModifier(lightningDamage);

    }


    public override string GetDescription()
    {
        sb.Length = 0;//确保每次调用时是从头开始
        descriptionLength = 0;//重置描述的属性数量

        AddItemDescription(strength, "力量");
        AddItemDescription(agility, "敏捷");
        AddItemDescription(intelligence, "智力");
        AddItemDescription(vitality, "活力");

        AddItemDescription(damage, "伤害");
        AddItemDescription(critChance, "暴击率");
        AddItemDescription(critPower, "暴击伤害");

        AddItemDescription(maxHealth, "生命值");
        AddItemDescription(armor, "护甲");
        AddItemDescription(evasion, "闪避");
        AddItemDescription(magicResistance, "魔抗");

        AddItemDescription(fireDamage, "火焰伤害");
        AddItemDescription(iceDamage, "冰霜伤害");
        AddItemDescription(lightningDamage, "闪电伤害");

        if (descriptionLength < 5)//确保最终返回的描述文本至少有 5 行内容
        {
            for (int i = 0; i < 5 - descriptionLength; i++)
            {
                sb.AppendLine();
                sb.Append("");//空行
            }
        }

        if (itemEffectDescription.Length > 0)
        {
            sb.AppendLine();
            sb.Append(itemEffectDescription);
        }

        return sb.ToString();//返回描述文本
    }

    
private void AddItemDescription(int _value, string _name)
    {
        if (_value != 0)//判断该属性没有实际值
        {
            if (sb.Length > 0)
                sb.AppendLine();//换行


            if (_value > 0)
                //sb.Append(_name+";"+_value);
                sb.Append("+ " + _value + " " + _name);//添加属性描述


            descriptionLength++;//每成功添加一个属性
        }
    }
}