tolua# 入门到放弃

Ilingis · 发表于 2021-8-7 21:43

tolua# is a Unity lua static binder solution. the first solution that analyzes code by reflection and generates wrapper classes.
It is a Unity plugin that greatly simplifies the integration of C# code with Lua. which can automatically generate the binding code to access Unity from Lua and map c# constants, variables, functions, properties, classes, and enums to Lua.
tolua# grows up from cstolua. it&#39;s goal is to be a powerful development environment for Unity.

github/tolua

All problems in computer science can be solved by another level of indirection, except of course for the problem of too many indirections

tolua - CSDN博客
<hr/>ToLua基于LuaInterface，LuaInterface是一个实现lua和微软.Net平台的CLR混合编程的开源库，使得lua脚本可以实例化CLR对象，访问属性，调用方法甚至使用lua函数来处理事件。
ToLua保留了LuaInterface基本形式，重写或移除了部分内容，使代码更加简洁，提供了对Unity的支持、拓展了lua5.1.4源码。而最大的改进在于，LuaInterface中lua访问CLR需要运行时反射，对于游戏应用来说效率不够理想，ToLua则提供了一套中间层导出工具，对于需要访问的CLR、Unity及自定义类预生成wrap文件，lua访问时只访问wrap文件，wrap文件接收lua传递来的参数，进行类型（值、对象、委托）转换，再调用真正工作的CLR对象和函数，最后将返回值返回给lua，有效地提高了效率。

配置过程，略。
Figure 1. Assets
  先开头，不定时更。
<hr/>GameObject: tolua-master\Assets\ToLua\Examples\12_GameObject
public class TestGameObject: MonoBehaviour
{
private string script =
      @&#34;
         local Color = UnityEngine.Color
         local GameObject = UnityEngine.GameObject
         local ParticleSystem = UnityEngine.ParticleSystem

         function OnComplete()
            print(&#39;OnComplete CallBack&#39;)
         end

         local go = GameObject(&#39;go&#39;)
         go:AddComponent(typeof(ParticleSystem))
         local node = go.transform
         node.position = Vector3.one
         print(&#39;gameObject is: &#39;..tostring(go))
         --go.transform:DOPath({Vector3.zero, Vector3.one * 10}, 1, DG.Tweening.PathType.Linear, DG.Tweening.PathMode.Full3D, 10, nil)
         --go.transform:DORotate(Vector3(0,0,360), 2, DG.Tweening.RotateMode.FastBeyond360):OnComplete(OnComplete)
         GameObject.Destroy(go, 2)
         go.name = &#39;123&#39;
         --print(&#39;delay destroy gameobject is: &#39;..go.name)
      &#34;;

public LuaState lua = null;

void Start()
{
#if UNITY_5 || UNITY_2017
      Application.logMessageReceived += ShowTips;
#else
      Application.RegisterLogCallback(ShowTips);
#endif
      new LuaResLoader();
      lua = new LuaState();
      lua.LogGC = true;
      lua.Start();
      LuaBinder.Bind(lua);
      lua.DoString(script, &#34;TestGameObject.cs&#34;);
}

void Update()
{
      lua.CheckTop();
      lua.Collect();
}

string tips = &#34;&#34;;

void ShowTips(string msg, string stackTrace, LogType type)
{
      tips += msg;
      tips += &#34;\r\n&#34;;
}

void OnApplicationQuit()
{
      lua.Dispose();
      lua = null;
#if UNITY_5 || UNITY_2017
      Application.logMessageReceived -= ShowTips;
#else
      Application.RegisterLogCallback(null);
#endif
}

void OnGUI()
{
      GUI.Label(new Rect(Screen.width / 2 - 300, Screen.height / 2 - 300, 600, 600), tips);
}
}lua脚本实现最主要的部分代码：
   lua.Start();
      LuaBinder.Bind(lua);
      lua.DoString(script, &#34;TestGameObject.cs&#34;);在&#39;private string script&#39;中，通过下面的代码，将lua与C#对应。
         local Color = UnityEngine.Color
         local GameObject = UnityEngine.GameObject
         local ParticleSystem = UnityEngine.ParticleSystem

         local go = GameObject(&#39;go&#39;)

对于Exmaple12给出的实例，通过GetType(), BaseType等函数，遍历ObjectPool中的所有object并得到其类型。
   LuaState lua = go.lua;

      foreach(var item in lua.translator.objectsBackMap)
      {
         object obj = item.Key;
         Type s = obj.GetType();
         Type z = s.BaseType;
      }通过循环判断，实现遍历。
z == typeof(System.Object);
//or
//z.ToString == &#39;System.Object&#39;;
//or
//z.BaseType == null;在console中显示实现，类似于下图：
figure 2. Console
<hr/>LuaObjectPool & objectsBackMap ;
public readonly Dictionary<object, int> objectsBackMap = new Dictionary<object, int>(new CompareObject());
public readonly LuaObjectPool objects = new LuaObjectPool();ObjectPool:
public class LuaObjectPool
{
      class PoolNode
      {
         public int index;
         public object obj;

         public PoolNode(int index, object obj)
         {
            this.index = index;
            this.obj = obj;
         }
      }

      private List<PoolNode> list;
      private PoolNode head = null;
      private int count = 0;

      public LuaObjectPool()
      {
         list = new List<PoolNode>(1024);
         head = new PoolNode(0, null);
         list.Add(head);
         list.Add(new PoolNode(1, null));
         count = list.Count;
      }

      public object this[int i]
      {
         get
         {
            if (i > 0 && i < count)
            {
                  return list.obj;
            }

            return null;
         }
      }

      public void Clear()
      {
         list.Clear();
         head = null;
         count = 0;
      }

      public int Add(object obj)
      {
         int pos = -1;

         if (head.index != 0)
         {
            pos = head.index;
            list[pos].obj = obj;
            head.index = list[pos].index;
         }
         else
         {
            pos = list.Count;
            list.Add(new PoolNode(pos, obj));
            count = pos + 1;
         }

         return pos;
      }

      public object TryGetValue(int index)
      {
         if (index > 0 && index < count)
         {
            return list[index].obj;
         }

         return null;
      }

      public object Remove(int pos)
      {
         if (pos > 0 && pos < count)
         {
            object o = list[pos].obj;
            list[pos].obj = null;
            list[pos].index = head.index;
            head.index = pos;

            return o;
         }

         return null;
      }

      public object Destroy(int pos)
      {
         if (pos > 0 && pos < count)
         {
            object o = list[pos].obj;
            list[pos].obj = null;
            return o;
         }

         return null;
      }

      public object Replace(int pos, object o)
      {
         if (pos > 0 && pos < count)
         {
            object obj = list[pos].obj;
            list[pos].obj = o;
            return obj;
         }

         return null;
      }
}相关补充：
C# Memory Management for Unity Developers
Unity3D之对象池(Object Pool)
<hr/>待补：

tolua-master\Assets\ToLua\Examples 1-24 ;new LuaState() ; Update(){...} ;ObjectTranslator ;各类error: xxxx ;[del] GetType() & TypeOf() , BaseType ; [/del]C# Dictionary & Lua id ;......

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tolua# 入门到放弃

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