xLua——C#中调用xLua代码

作者：追风剑情发布于：2017-7-15 18:19 分类：Lua

以下代码来自xLua demo

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

public class CSCallLua : MonoBehaviour {
    LuaEnv luaenv = null;
    string script = @"
        a = 1
        b = 'hello world'
        c = true

        d = {
           f1 = 12, f2 = 34, 
           1, 2, 3,
           add = function(self, a, b) 
              print('d.add called')
              return a + b 
           end
        }

        function e()
            print('i am e')
        end

        function f(a, b)
            print('a', a, 'b', b)
            return 1, {f1 = 1024}
        end
        
        function ret_e()
            print('ret_e called')
            return e
        end
    ";

    public class DClass
    {
        public int f1;
        public int f2;
    }
    
    [CSharpCallLua]
    public interface ItfD
    {
        int f1 { get; set; }
        int f2 { get; set; }
        int add(int a, int b);
    }

    [CSharpCallLua]
    public delegate int FDelegate(int a, string b, out DClass c);

    [CSharpCallLua]
    public delegate Action GetE();

    // Use this for initialization
    void Start()
    {
        luaenv = new LuaEnv();
        luaenv.DoString(script);

        Debug.Log("_G.a = " + luaenv.Global.Get<int>("a"));
        Debug.Log("_G.b = " + luaenv.Global.Get<string>("b"));
        Debug.Log("_G.c = " + luaenv.Global.Get<bool>("c"));


        DClass d = luaenv.Global.Get<DClass>("d");//映射到有对应字段的class，by value
        Debug.Log("_G.d = {f1=" + d.f1 + ", f2=" + d.f2 + "}");

        Dictionary<string, double> d1 = luaenv.Global.Get<Dictionary<string, double>>("d");//映射到Dictionary<string, double>，by value
        Debug.Log("_G.d = {f1=" + d1["f1"] + ", f2=" + d1["f2"] + "}, d.Count=" + d1.Count);

        List<double> d2 = luaenv.Global.Get<List<double>>("d"); //映射到List<double>，by value
        Debug.Log("_G.d.len = " + d2.Count);

        ItfD d3 = luaenv.Global.Get<ItfD>("d"); //映射到interface实例，by ref，这个要求interface加到生成列表，否则会返回null，建议用法
        d3.f2 = 1000;
        Debug.Log("_G.d = {f1=" + d3.f1 + ", f2=" + d3.f2 + "}");
        Debug.Log("_G.d:add(1, 2)=" + d3.add(1, 2));

        LuaTable d4 = luaenv.Global.Get<LuaTable>("d");//映射到LuaTable，by ref
        Debug.Log("_G.d = {f1=" + d4.Get<int>("f1") + ", f2=" + d4.Get<int>("f2") + "}");


        Action e = luaenv.Global.Get<Action>("e");//映射到一个delgate，要求delegate加到生成列表，否则返回null，建议用法
        e();

        FDelegate f = luaenv.Global.Get<FDelegate>("f");
        DClass d_ret;
        int f_ret = f(100, "John", out d_ret);//lua的多返回值映射：从左往右映射到c#的输出参数，输出参数包括返回值，out参数，ref参数
        Debug.Log("ret.d = {f1=" + d_ret.f1 + ", f2=" + d_ret.f2 + "}, ret=" + f_ret);

        GetE ret_e = luaenv.Global.Get<GetE>("ret_e");//delegate可以返回更复杂的类型，甚至是另外一个delegate
        e = ret_e();
        e();

        LuaFunction d_e = luaenv.Global.Get<LuaFunction>("e");
        d_e.Call();

    }

    // Update is called once per frame
    void Update()
    {
        if (luaenv != null)
        {
            luaenv.Tick();
        }
    }

    void OnDestroy()
    {
        luaenv.Dispose();
    }
}

运行测试