[游戏开发]Unity Xlua 之 C#调用Lua(二)

Unity Xlua 之 C#调用Lua(二)

一.全局变量的获取

只能获取全局变量通过GlobalTable

public class Lesson04_LuaGlobal : MonoBehaviour
{
    private void Start()
    {
        LuaMgr.GetInstance().Init();
        LuaMgr.GetInstance().LoadFile("Main");

        var globalTable = LuaMgr.GetInstance().Global;
        var testInt = globalTable.Get<int>("TestInt");
        var testFloat = globalTable.Get<float>("TestFloat");
        var testDouble = globalTable.Get<double>("TestFloat");
        var testBool = globalTable.Get<bool>("TestBool");
        var testString = globalTable.Get<string>("TestString");
        Debug.Log(testInt);
        Debug.Log(testFloat);
        Debug.Log(testDouble);
        Debug.Log(testBool);
        Debug.Log(testString);
        globalTable.Set("TestInt",666);
        testInt = globalTable.Get<int>("TestInt");
        Debug.Log(testInt);
    }
}

二.全局函数的获取

自定义委托时需要打上标签，然后重新生成代码，尽量使用委托，而不是LuaFunction，这样容易产生垃圾消耗

[CSharpCallLua]
public delegate void Custom1();

[CSharpCallLua]
public delegate int Custom2(int a);

[CSharpCallLua]
public delegate void Custom3(string a, out int ra, out string rb, out bool rc, out float rd, out string re);

[CSharpCallLua]
public delegate void Custom4(int a, params int[] arr);

public class Lesson05_LuaFunc : MonoBehaviour
{
    private void Start()
    {
        LuaMgr.GetInstance().Init();
        LuaMgr.GetInstance().LoadFile("Main");

        var globalTable = LuaMgr.GetInstance().Global;
        //=============无参无返回值=============
        //自定义(使用自定义的委托时需要打上[CSharpCallLua]标签,然后重新生成代码)
        var call1 = globalTable.Get<Custom1>("TestFunc1");
        call1?.Invoke();
        //C#
        var ac1 = globalTable.Get<Action>("TestFunc1");
        ac1?.Invoke();
        //Unity
        var ua1 = globalTable.Get<UnityAction>("TestFunc1");
        ua1?.Invoke();
        //XLua
        var func1 = globalTable.Get<LuaFunction>("TestFunc1");
        func1?.Call();
        //=============有参有返回值=============
        var call2 = globalTable.Get<Custom2>("TestFunc2");
        Debug.Log(call2?.Invoke(1));
        var func = globalTable.Get<Func<int, int>>("TestFunc2");
        Debug.Log(func?.Invoke(1));
        var func2 = globalTable.Get<LuaFunction>("TestFunc2");
        Debug.Log(func2.Call(1)[0]);
        //=============多返回值=============
        var call3 = globalTable.Get<Custom3>("TestFunc3");
        call3.Invoke("wy", out var ra, out var rb, out var rc, out var rd, out var re);
        Debug.Log($"{ra},{rb},{rc},{rd},{re}");
        var func3 = globalTable.Get<LuaFunction>("TestFunc3");
        var arr = func3.Call("wy");
        foreach (var item in arr)
            Debug.Log(item);
        //============变长参数=============
        var call4 = globalTable.Get<Custom4>("TestFunc4");
        call4.Invoke(10, 3, 45, 23, 45, 56, 7, 222);
        var func4 = globalTable.Get<LuaFunction>("TestFunc4");
        func4.Call(10, 3, 45, 23, 45, 56, 7, 222);
    }
}

Lua脚本

TestFunc1 = function ()
    print("无参无返回")
end

TestFunc2 = function (a)
    print("有参有返回")
    return a + 1
end

TestFunc3 = function (a)
    print("多返回")
    return 123,"zzs",true,1.333,a
end

TestFunc4 = function (a,...)
    print("变长参数")
    local t = {...}
    for key, value in pairs(t) do
        print(key,value)
    end
end