RPG背包系统【1】

梦里梦外; 2022-08-07 14:56 430阅读 0赞

转载自：http://www.unitymanual.com/blog-10192-2705.html

在RPG游戏中，我们猪脚不断的打钱爆装备，那么这些物品需要存储在哪里？

所以我们今天来学习制作背包，这样猪脚打到的东西就不会丢啦！

按照往常惯例，先贴一张图：

[![121213wiusgju3cy5icza9.png][]][121213wiusgju3cy5icza9.png 1]

这个是地下城与勇士的背包界面，主要是我刚好找到了这张图，就暂时用这张。

我会在最后上传我的资源，你们可以下载下来跟着我一起来制作！

ok，首先创建inventory背景图，也就是Image，调到合适大小

[![121634s5vbnjtvltk55vlt.png][]][121634s5vbnjtvltk55vlt.png 1]

然后保存为prefab，再来制作slot，这里我们先创建image，再吧image和canvas renderer组件删了，只留下rect transform

然后创建子物体Image，命名为ItemIcon，Image先选择[![165733ag70ow2ullo5nrzq.png][]][165733ag70ow2ullo5nrzq.png 1]，再创建子物体button，也是选择这张图![165733ag70ow2ullo5nrzq.png][]，在button里面吧sprite swap的高亮sprite换成[![171942qbx6mmyzcbbbtamx.png][]][171942qbx6mmyzcbbbtamx.png 1] 命名为Overlay，主要是鼠标移动显示高亮，再创建text，[![174407inb3oofwa643dyi6.png][]][174407inb3oofwa643dyi6.png 1]，命名为count，主要保存数目。

OK，我们也保存为prefab。

接下来我们来编写Inventory，c\#代码：

首先定义变量:

[![123926xtufhh64hybhuf6j.png][]][123926xtufhh64hybhuf6j.png 1]

接下来我们编写初始化Inventory，也就是在其中加入slot，我们写进一个方法CreatInentory（），在start中调用。

[![163619zz1c5vckzcq3qdvv.png][]][163619zz1c5vckzcq3qdvv.png 1]

调整数值，运行就可以看到

[![172318pz6mdzod9tmj9z6o.png][]][172318pz6mdzod9tmj9z6o.png 1]

这里注意一下：有的小伙伴永远也对不齐，因为image的锚点和轴没设置对，这里我自己是都定义在左上角。

Ok，界面部分大部分完成了，接下我们来写Item类。

[![181408z800oq0336f30o8x.png][]][181408z800oq0336f30o8x.png 1]这里我为了偷懒只写了两种类型的Item。

Ok，为了测试更加直观我搭建了一个场景：

[![181714m99b0iq307900wfw.png][]][181714m99b0iq307900wfw.png 1]绿色的是我们猪脚，当移动到蓝色物体

Inventory会增加一瓶蓝药，当移动到红色，会增加一瓶红药。

Ok，接下来我们编写Slot类，主要存放和处理Item。因为每一个slot都有一个或多个Item，也可以是没有。

### \[code\]csharpcode： ###

using UnityEngine;
    using System.Collections;
    using System.Collections.Generic;
    using UnityEngine.UI;
    public class Slot : MonoBehaviour {
    	private Stack<Item> items;//这里我们用stack来存放进出Item
    	public Text count;//数量
    	public Sprite icon;//图标
    	public bool isEmpty//是否为空
    	{
    		get{return items.Count == 0;}
    	}
    	// Use this for initialization
    	void Start () {
    		items = new Stack<Item>();
    	}
    	
    	// Update is called once per frame
    	void Update () {
    	
    	}
    	public void AddItem(Item item)
    	{
    		items.Push(item);//吧tiem压入栈中
    		if (items.Count > 1)
    		{
    			count.text = items.Count.ToString();//如果数量大于1就显示
    		}
    		ChangeIcon(item.icon);
    	}
    	private void ChangeIcon(Sprite iconSprite)
    	{
    		icon = iconSprite;
    	}
    }

然后我么回到Invetory代码，我们重新写个AddItem（）方法，因为在这里可以遍历所有slots,好操作。

### \[code\]csharpcode： ###

private int emptySlot;//空slot的数量

在start（）初始化

### \[code\]csharpcode： ###

emptySlot = rows * column;

### \[code\]csharpcode： ###

public bool AddItem(Item item)
    	{
    		if (item.maxSize == 1)//先假设maxSize = 1
    		{
    			PlaceEmptySlot(item);
    			return true;
    		}
    		return false;
    	}
    	private bool PlaceEmptySlot(Item item)
    	{
    		if(emptySlot > 0)
    		{
    			foreach(GameObject slot in allSlots)
    			{
    				Slot slotTemp = slot.GetComponent<Slot>();
    				if (slotTemp.isEmpty)
    				{
    					slotTemp.AddItem(item);
    					emptySlot--;
    					return true;
    				}
    			}
    		}
    		return false;
    	}

OK,我们接下来把我们的猪脚给移动起来，写个Player类，然后给Mana，Health的Perfab改新加的tag “Item”，注意maxSize 必须要为1，还有要设成trigger，Player要添加rigidbody

[![193528oacbbwenw6nangbc.png][]][193528oacbbwenw6nangbc.png 1]

运行试试，发现移动到篮球和红球，在inventory有Item了。

[![193820et3n92yj6hf3f6o8.png][]][193820et3n92yj6hf3f6o8.png 1]

OK，今天就先到这里！好累！！！

至于资源貌似我不会弄！！！=\_=

http://pan.baidu.com/s/1o61ItoI

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