Flash calls Lua Script: 2

Here is a specific example: http://rc.qzone.qq.com/100641772

In this section, we will further learn how to use luaalchemy.

As in the previous section, first create an as3 project.

 Public   Class  Loweveldemo1 extends sprite {  Public  Function loweveldemo1 () {initpage (); loadlua (  "  ../Luaassets/lowevel. Lua  "  );}  Private Function initpage ():Void  {  VaR  Label: label;  VaR BTN: button = New  Button (); BTN. Move (  100 , 100  ); Addchild (BTN );  VaR  C: myclass ;}  Private Function loadlua (_ URL: string ): Void {  VaR Urlloader: urlloader = New  Urlloader (); urlloader. dataformat = Urlloaderdataformat. text;  VaR URLRequest: URLRequest = New  URLRequest (_ URL); urlloader. addeventlistener (event. Complete, function (E: Event ):  Void  {Executelua (urlloader. Data) ;}); urlloader. Load (URLRequest );}  Private Function executelua (_ luast: string ): Void  {  VaR Lua: luaalchemy = New  Luaalchemy (); Lua. setglobal (  "  This  " , This  ); Lua. dostring (_ luast );}} 

This is a main file. In this file, we load a Lua script. Put a button on the page.

Let's take a look at the Lua script.

-- Luaalchemy -- Http: // Code.google.com/p/lua-alchemy/wiki/luatoas3lowlevel -- [[Learn more about luaalchemy and Lua Scripts] -- As3.trace (  "  Lua demo  "  ) -- As3. Class . Fl. Controls. Button. New  () -- BTN = as3. New ( "  Fl. Controls: button  " ) This statement always fails. Function luamethod () as3.trace (  "  OK  "  ) Endlocal lab1 = As3. Class . Fl. Controls. label. New  () Lab1.text = "  This is a Lua alchemy demo.  "  Lab1.width = 200  This . Addchild (lab1) lab1.move (  10 , 10  ) Local ST1 = As3. New ( "  String  " , "  Hello world!  "  ) Local V, n = As3.tolua (ST1, 40  ) As3.trace (type (V) as3.trace (type (n) as3.trace (type (ST1) Local m =As3.toas3 (luamethond) as3.trace (m) as3.trace (luamethond) lab1.text = St1local M1, M2 = As3.toas3 ( 45 , Function () Local m = 100  End) as3.trace (type (M1) as3.trace (type (m2) Local m3 = As3. New ( "  Array  "  ) M3 [  0 ] = "  A "  M3 [  1 ] = "  B  "  Local M4 = As3. Get (M3, "  Length  "  ) As3.trace (type (M4) as3.  Set (Lab1, "  Text  " ,"  Change by Lua  "  ) As3.trace (as3.type (m3) Local customclass = As3. Class . Custompack. myclass. New  () As3.trace (as3.type (customclass) as3.call (customclass. C1,  "  M1  "  ) Local C5 = As3. Get (Customclass, "  P1 "  ) Local C6 = As3.tolua (C5) as3.trace (C5) as3.trace (C6) 

The myclass class is displayed in the script.

 Package custompack {  Public   Class  Myclass {  Public   VaR P1: Int = 100  ;  Public   VaR C1: myclass2 =New  Myclass2 ();  Public  Function myclass (){}  Public Function hellomethod (_ n: Int ): Void  {Trace (p1 * _ N ));}}} 

  package custompack {  Public   class   myclass2 {  Public   var  P1:  int  =  33  ;  Public   function myclass2 () {}  Public  function M1 ():  void   {trace ( "   hello, m1   "  );}}}  

In addition, if you want to call the function of the Lua file in the as file, it is easy to add the following event for the button.CodeYou can.

 
, Btn2.addeventlistener (mouseevent. Click, function (E: Event ):Void{VaRResult: array = Lua. dostring ("Tempmethod ()");});
 

Now, we can not only access the methods in as from Lua, but also access Lua from.