Unity开发记录-背包系统简单实现

Unity学习记录-背包系统简单实现

ScriptableObject

• ScriptableObject是Unity提供的一个数据配置存储基类，可以用来保存数据资源文件
• ScriptableObject的实例会被保存为资源文件（.asset）
• 使用ScriptableObject，我们需要创建一个类来继承它

示例代码：创建物品类ScriptableObject

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

[CreateAssetMenu(fileName = "Item",menuName ="BagSystem/Item")]
public class Item : ScriptableObject
{
    [Header("物品名字")]
    public string itemName;
    [Header("持有数量")]
    public int count = 0;
    [Header("是否可堆叠")]
    public bool stackable = true;
    [TextArea]
    public string describeText;
    [Header("贴图")]
    public Sprite itemImage;
}

• 在此之后我们可以使用右键来创建相关的资源

物品的创建

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

[CreateAssetMenu(fileName = "Item",menuName ="BagSystem/Item")]
public class Item : ScriptableObject
{
    [Header("物品名字")]
    public string itemName;
    [Header("持有数量")]
    public int count = 0;
    [Header("是否可堆叠")]
    public bool stackable = true;
    [TextArea]
    public string describeText;
    [Header("贴图")]
    public Sprite itemImage;
}

创建物品资源

背包的创建

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

[CreateAssetMenu(fileName ="bag",menuName ="BagSystem/Bag")]
public class BagList : ScriptableObject
{
    [Header("物品列表")]
    public List<Item> bagList = new List<Item>();

}

• 此处注意Dictionary无法被数据持久化，应该换一种数据结构（如List）

创建背包资源

创建背包UI——使用Grid Layout Group

创建Scroll View

使用Grid Layout Group

完善逻辑——模拟添加物品

• 初始化背包

private void initBag()
{
    GameObject content = GameObject.Find("BagContent");
    int numberOfChild = content.transform.childCount;

    //先清空UI里面已经存在的
    for(int i=0;i<numberOfChild;i++)
    {
        Destroy(content.transform.GetChild(i).gameObject);
    }

    foreach (var item in playerBag.bagList)
    {
        if (item.stackable)  //可以堆叠的情况 
        {
            GameObject temp = Instantiate(itemObject);
            temp.transform.Find("itemImage").GetComponent<Image>().sprite = item.itemImage;
            temp.transform.Find("count").GetComponent<Text>().text = item.count.ToString();
            temp.transform.SetParent(content.transform);
        }
        else  //不可堆叠的情况
        {
            for(int i=0;i< item.count;i++)
            {
                GameObject temp = Instantiate(itemObject);
                temp.transform.Find("itemImage").GetComponent<Image>().sprite = item.itemImage;
                temp.transform.Find("count").GetComponent<Text>().text = "1";
                temp.transform.SetParent(content.transform);
            }
        }
    }
}

• 添加剑

public void addSword()
{
    if(!playerBag.bagList.Contains(ice_sword))
    {
        ice_sword.count = 1;
        playerBag.bagList.Add(ice_sword);
    }
    else ice_sword.count++;
    initBag();
}

• 整体代码

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

public class addItem : MonoBehaviour
{
    public BagList playerBag;
    public Item ice_sword;
    public Item fire_lance;
    public GameObject itemObject;

    private void Start()
    {
        initBag();
    }

    private void initBag()
    {
        GameObject content = GameObject.Find("BagContent");
        int numberOfChild = content.transform.childCount;

        //先清空UI里面已经存在的
        for(int i=0;i<numberOfChild;i++)
        {
            Destroy(content.transform.GetChild(i).gameObject);
        }

        foreach (var item in playerBag.bagList)
        {
            if (item.stackable)  //可以堆叠的情况 
            {
                GameObject temp = Instantiate(itemObject);
                temp.transform.Find("itemImage").GetComponent<Image>().sprite = item.itemImage;
                temp.transform.Find("count").GetComponent<Text>().text = item.count.ToString();
                temp.transform.SetParent(content.transform);
            }
            else  //不可堆叠的情况
            {
                for(int i=0;i< item.count;i++)
                {
                    GameObject temp = Instantiate(itemObject);
                    temp.transform.Find("itemImage").GetComponent<Image>().sprite = item.itemImage;
                    temp.transform.Find("count").GetComponent<Text>().text = "1";
                    temp.transform.SetParent(content.transform);
                }
            }
        }
    }

    public void addSword()
    {
        if(!playerBag.bagList.Contains(ice_sword))
        {
            ice_sword.count = 1;
            playerBag.bagList.Add(ice_sword);
        }
        else ice_sword.count++;
        initBag();
    }

    public void addLance()
    {
        if (!playerBag.bagList.Contains(fire_lance))
        {
            fire_lance.count = 1;
            playerBag.bagList.Add(fire_lance);
        }
        else fire_lance.count++;
        initBag();
    }
}