Unity XLua 官方教程学习

一、Lua 文件加载

1. 执行字符串

using UnityEngine;
using XLua;

public class ByString : MonoBehaviour {
    XLua.LuaEnv luaEnv  ;
    // Use this for initialization
    void Start () {
        luaEnv = new XLua.LuaEnv();
        //从Unity调用Lua
        // luaEnv.DoString("print('HelloWorld')");
        //从unity调用Lua，Lua调用C#
        luaEnv.DoString("CS.UnityEngine.Debug.Log('HelloWorld')");
    }
	
	// Update is called once per frame
	void Update () {
        if (luaEnv!=null)
        {
            // 清楚 Lua 未手动释放的 LuaBase 对象
            luaEnv.Tick();
        }
	}
    private void OnDestroy()
    {
        luaEnv.Dispose();


    }
}

2. 加载 Lua 文件

 

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

public class HelloWorldByFile : MonoBehaviour {

    XLua.LuaEnv luaEnv = null;
	void Start () {

        TextAsset ta = Resources.Load("HelloWorld.lua");

        luaEnv = new XLua.LuaEnv();

        luaEnv.DoString(ta.bytes);
//或者用下面的方法
 // luaEnv.DoString("require 'HelloWorld'"); //requite 会Load  找到 HelloWorld.Lua.Txt  require实际上是调一个个的loader去加载，有一个成功就不再往下尝试，全失败则报文件找不到。


    }
	
	// Update is called once per frame
	void Update () {
		
	}
    private void OnDestroy()
    {
        luaEnv.Dispose();
    }
}

其中 Lua 文件代码为：

print("Hello Lua")
print("Hello Lua")
print("Hello Lua")
print("Hello Lua")

a=2

b=3
print(a+b)

需要注意的是因为 Resource 只支持有限的后缀，放 Resources 下 lua 文件得加上 txt 后缀，如：HelloWorld.lua.txt。

3. 自定义 Loader

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

public class CreateLoad : MonoBehaviour {

    public delegate byte[] CustomLoader(ref string filepath);

    //  public void LuaEnv.AddLoader(CustomLoader loader)
    XLua.LuaEnv luaEnv;
    private byte[] MyLoader(ref string filePath)
    {
        print(filePath);
        string s = "    a=5   b=10  print(a+b)";

        return System.Text.Encoding.UTF8.GetBytes(s);
    }

    void Start () {
        luaEnv = new XLua.LuaEnv();
        luaEnv.AddLoader(MyLoader);
        luaEnv.AddLoader(MyLoader);
        luaEnv.DoString("require 'xxx'");
    }
    private void OnDestroy()
    {
        luaEnv.Dispose();
    }
}

自定义loader路径

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

public class CreateLoad : MonoBehaviour {

    public delegate byte[] CustomLoader(ref string filepath);

    //  public void LuaEnv.AddLoader(CustomLoader loader)
    XLua.LuaEnv luaEnv;
 

    void Start () {
        luaEnv = new XLua.LuaEnv();
        luaEnv.AddLoader(MyLoader);
        luaEnv.DoString("require 'Test007'");
    }
    private void OnDestroy()
    {
        luaEnv.Dispose();
    }

    private byte[] MyLoader(ref string filePath)
    { 
        string absPath = Application.streamingAssetsPath + "/" + filePath + ".lua.txt";
         
        string s= File.ReadAllText(absPath);
        return System.Text.Encoding.UTF8.GetBytes(s);
    }
}

 

C#访问Lua

方法1：通过Class类来方位lua中的函数变量方法和表

CSharpCallLua.lua.text

a=100
 str= "Hi" 
 isDie=false  
person={
name="zain",
age=100,
eat=function(self,a,b)  
print("吃面条")
print(a+b)
end
} 
function Test(a ,b) 
print("test") 
print(a+b)
c=20
z=a
x=b
return z,x,c
end 

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using XLua;
public class CSharpCallLua : MonoBehaviour {
    XLua.LuaEnv luaEnv = null;
	// Use this for initialization
	void Start () {
        luaEnv = new XLua.LuaEnv();

        luaEnv.DoString("require 'CSharpCallLua'");
         int a=   luaEnv.Global.Get("a"); //获取到lua里面的全局变量

        print(a);
        Preson p = luaEnv.Global.Get("person");
        print(p.name + "---" + p.age);
        IPreson p2 = luaEnv.Global.Get("person");
        print(p2.age + "--" + p2.name);
        p2.eat(12, 12);
        //运行lua中得function 方法1 使用delegate
        Test test = luaEnv.Global.Get("Test");
        int x = 0;
        int c = 0;
        int z = test(12, 12, out x, out c);
        print(z);
        print(x);
        print(c);

        //   //运行lua中得function 方法2 映射到luafunction

        LuaFunction fun = luaEnv.Global.Get("Test");
      object [] o =  fun.Call(12, 34);
        foreach (var item in o)
        {
            print(item);
        }



    }


    [CSharpCallLua]
    delegate int  Test(int a,int b ,out int x,out int c);
    public void Eat()
    {

    }
    private void OnDestroy()
    {
        luaEnv.Dispose();
    }

    public class Preson
    {
        public string name;
        public int age;  
    }
    [ CSharpCallLua]
   interface IPreson
    {
        string name { get; set; }
        int age { get; set; }
        void eat(int a,int b);
    }

}

方法2：通过Interface可以改变lua中 table表中的参数

lua  CSharpCallLua.lua.txt 里面声明

preson ={ 
name="Zain",
age=100 ,

eat=function(thisself,a,b)
print(a+b)
print("eat吃东西")
end
}

CSharp脚本 CSharpCallLua脚本为

using System.Collections;
using System.Collections.Generic;
using System.IO;
using UnityEngine;
using XLua;
public class CSharpCallLua: MonoBehaviour {

    public delegate byte[] CustomLoader(ref string filepath);

    //  public void LuaEnv.AddLoader(CustomLoader loader)
    XLua.LuaEnv luaEnv;


    void Start()
    {
        luaEnv = new XLua.LuaEnv(); 
        luaEnv.DoString("require 'CSharpCallLua'");

        IPorson p2= luaEnv.Global.Get("preson");
        print(p2.name + "--" + p2.age);
        p2.eat(2,4);

        p2.age = 200;
        luaEnv.DoString("print(preson.age)");


    }
    private void OnDestroy()
    {
        luaEnv.Dispose();
    }


    [CSharpCallLua]
    interface IPorson
    { 
        string name { get; set; }
        int age { get; set; }
        void eat(int a, int b);
    }


    private byte[] MyLoader(ref string filePath)
    {
        string absPath = Application.streamingAssetsPath + "/" + filePath + ".lua.txt";

        string s = File.ReadAllText(absPath);
        return System.Text.Encoding.UTF8.GetBytes(s);
    }
}