TestInherit.cs

    using UnityEngine;
    using System.Collections;
    using LuaInterface;

    public class TestInherit : MonoBehaviour 
    {
        private string script =
        @"  LuaTransform = 
            {                          
            }                                                   

            function LuaTransform.Extend(u)         
                local t = {}                        
                local _position = u.position      
                tolua.setpeer(u, t)     

                t.__index = t
                local get = tolua.initget(t)
                local set = tolua.initset(t)   

                local _base = u.base            

                --重写同名属性获取        
                get.position = function(self)                              
                    return _position                
                end            

                --重写同名属性设置
                set.position = function(self, v)                                                                 
                    if _position ~= v then         
                        _position = v                    
                        _base.position = v                                                                                      
                    end
                end

                --重写同名函数
                function t:Translate(...)            
                    print('child Translate')
                    _base:Translate(...)                   
                end    

                return u
            end


            --既保证支持继承函数，又支持go.transform == transform 这样的比较
            function Test(node)        
                local v = Vector3.one           
                local transform = LuaTransform.Extend(node)  
                --local transform = node                                                  

                local t = os.clock()            
                for i = 1, 200000 do
                    transform.position = transform.position
                end
                print('LuaTransform get set cost', os.clock() - t)

                transform:Translate(1,1,1)                                                                     

                local child = transform:FindChild('child')
                print('child is: ', tostring(child))

                if child.parent == transform then            
                    print('LuaTransform compare to userdata transform is ok')
                end

                transform.xyz = 123
                transform.xyz = 456
                print('extern field xyz is: '.. transform.xyz)
            end
            ";

        LuaState lua = null;

        void Start () 
        {
            lua = new LuaState();        
            lua.Start();
            LuaBinder.Bind(lua);
            lua.DoString(script, "TestInherit.cs");

            float time = Time.realtimeSinceStartup;

            for (int i = 0; i < 200000; i++)
            {
                Vector3 v = transform.position;            
                transform.position = v;
            }

            time = Time.realtimeSinceStartup - time;
            Debugger.Log("c# Transform get set cost time: " + time);

            LuaFunction func = lua.GetFunction("Test");
            func.BeginPCall();
            func.Push(transform);
            func.PCall();
            func.EndPCall();

            lua.CheckTop();
            lua.Dispose();
            lua = null;
        }
    }

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