騰訊出品的XLua越來越受到遊戲開發者的青睞，小編也不例外，但在學習XLua文件的時候，深感騰訊的這個文件寫的，還不如他們的各種SDK寫的好。小編決定逐行分析其文件，把缺下的註釋補回來。同是也歡迎大神訂正。

第一篇 LuaBehaviour

/*
 * Tencent is pleased to support the open source community by making xLua available.
 * Copyright (C) 2016 THL A29 Limited, a Tencent company. All rights reserved.
 * Licensed under the MIT License (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
 * http://opensource.org/licenses/MIT
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
*/

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

[System.Serializable]
public class Injection
{
    public string name;
    public GameObject value;
}

[LuaCallCSharp]
public class LuaBehaviour : MonoBehaviour {
    //lua程式碼，在騰訊例項中是在Hierarchy面板賦值的
    public TextAsset luaScript;
    public Injection[] injections;

    internal static LuaEnv luaEnv = new LuaEnv(); //all lua behaviour shared one luaenv only!
    internal static float lastGCTime = 0;
    internal const float GCInterval = 1;//1 second 

    private Action luaStart;
    private Action luaUpdate;
    private Action luaOnDestroy;

    private LuaTable scriptEnv;

    void Awake()
    {
        //獲取LuaTable，要用luaEnv.NewTable()，這裡會做一些排序，共用虛擬機器等操作
        scriptEnv = luaEnv.NewTable();
        LuaTable meta = luaEnv.NewTable();
        //key,value的方式，虛擬機器環境對應的key值一定要是這個“__index”，
        //在xlua的底層，獲取LuaTable所屬虛擬機器的環境是get的時候，用的key是這個名字，所以不能改
        meta.Set("__index", luaEnv.Global);
        //將有虛擬機器和全域性環境的table繫結成他自己的metatable
        scriptEnv.SetMetaTable(meta);
        //值已經傳遞過去了，就釋放他
        meta.Dispose();
        //這裡的"self"和上面的"__index"是一個道理啦。將c#指令碼繫結到LuaTable
        scriptEnv.Set("self", this);
        //在騰訊示例中，Hierarchy面板賦值的，在這裡應該是約定名字和子物體的對應，繫結到luatable
        foreach (var injection in injections)
        {
            scriptEnv.Set(injection.name, injection.value);
        }
        //執行lua語句，三個引數的意思分別是lua程式碼，lua程式碼在c#裡的代號，lua程式碼在lua虛擬機器裡的代號
        luaEnv.DoString(luaScript.text, "LuaBehaviour", scriptEnv);
        //xlua搞了這麼久，也就是為了最後這幾個錘子，c#呼叫lua裡的方法。
        //總結起來一句話，通過luatable這個類來完成c#呼叫Lua
        //怎樣完成這一步呢？就是獲取luatable物件，配置lua虛擬機器，配置虛擬機器環境，繫結c#程式碼，最後執行lua語句
        Action luaAwake = scriptEnv.Get<Action>("awake");
        scriptEnv.Get("start", out luaStart);
        scriptEnv.Get("update", out luaUpdate);
        scriptEnv.Get("ondestroy", out luaOnDestroy);
        if (luaAwake != null)
        {
            luaAwake();
        }
    }

	// Use this for initialization
	void Start ()
    {
        if (luaStart != null)
        {
            luaStart();
        }
	}
	
	// Update is called once per frame
	void Update ()
    {
        if (luaUpdate != null)
        {
            luaUpdate();
        }
        if (Time.time - LuaBehaviour.lastGCTime > GCInterval)
        {
            luaEnv.Tick();
            LuaBehaviour.lastGCTime = Time.time;
        }
	}

    void OnDestroy()
    {
        if (luaOnDestroy != null)
        {
            luaOnDestroy();
        }
        luaOnDestroy = null;
        luaUpdate = null;
        luaStart = null;
        scriptEnv.Dispose();
        injections = null;
    }
}
 

-- Tencent is pleased to support the open source community by making xLua available.
-- Copyright (C) 2016 THL A29 Limited, a Tencent company. All rights reserved.
-- Licensed under the MIT License (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
-- http://opensource.org/licenses/MIT
-- Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

local speed = 10

function start()
	print("lua start...")
end

function update()
	local r = CS.UnityEngine.Vector3.up * CS.UnityEngine.Time.deltaTime * speed
	self.transform:Rotate(r)
end

function ondestroy()
    print("lua destroy")
end

 

1.下載安裝git安裝包

2.開啟它

2.cd到你文件要下載到的目錄

3.輸入git clone https://github.com/Tencent/xLua.git 回車成功！

如果您覺得有用，就請我喝杯咖啡吧0.0