{"id":359,"date":"2007-09-22T08:31:11","date_gmt":"2007-09-22T07:31:11","guid":{"rendered":"http:\/\/www.matthijskamstra.nl\/blog\/index.php\/2007\/09\/24\/as3-take-one-step-at-a-time-step-1\/"},"modified":"2007-10-22T20:22:15","modified_gmt":"2007-10-22T19:22:15","slug":"as3-take-one-step-at-a-time-step-1","status":"publish","type":"post","link":"https:\/\/www.matthijskamstra.nl\/blog\/2007\/09\/22\/as3-take-one-step-at-a-time-step-1\/","title":{"rendered":"AS3 – take one step at a time: step 1"},"content":{"rendered":"

I finally started programming with ActionScript 3 (AS3); I know, I not<\/strong> a early adopter… \ud83d\ude09<\/p>\n

And the first steps in AS3 are as uncomfortable as the first time I started OOP<\/a> programming … or when I started moved from AS1 to AS2…<\/p>\n

Since I started working for NOISE<\/a> 5 months ago and moved to Amsterdam, I haven’t had time to do learn AS3.
\nThat luckily has changed \ud83d\ude42 and I started learning the basics.<\/p>\n

And the first obstacle I ran into was something very simple: I always use a basic document (FLA) with default library items, some layers I always use and some ActionScript code to align the stage:
\n
\n_root._quality = \"BEST\";
\nStage.scaleMode = \"noScale\";
\nStage.showMenu = false;
\nStage.align = \"TL\";
\nstop ();
\n<\/code>
\nI have this also in a class (AS2), so I thought it would be useful to rewrite this class in AS3.
\nand I wanted to use this in my new as3 files too… (remember that this is the first thing a tried)<\/p>\n

First you need to create a document class:<\/p>\n

\"Document
\nAnd in my case my document class was: ‘Main’<\/p>\n

\r\npackage  {\r\n\r\n\tpublic class Main {\r\n\t\t\r\n\t\tpublic function Main() {\r\n\t\t\ttrace ('Main')\t\t\t\r\n\t\t}\r\n\t\t\r\n\t}\r\n\t\r\n}\r\n<\/code><\/pre>\n
(package generated by FlashDevelop)<\/p>\n
Code didn’t pass; I got a Compiler Error:
\n5000: The class 'Main' must subclass 'flash.display.MovieClip' since it is linked to a library symbol of that type.<\/code><\/p>\n
\r\npackage  {\r\n\r\n\tpublic class Main extends MovieClip {\r\n\t\t\r\n\t\tpublic function Main() {\r\n\t\t\ttrace ('Main')\t\t\t\r\n\t\t}\r\n\t\t\r\n\t}\r\n\t\r\n}\r\n\r\n<\/code><\/pre>\n
I got some new errors:<\/p>\n
    \n
  1. 1017: The definition of base class MovieClip was not found.<\/li>\n
  2. 5000: The class ‘Main’ must subclass ‘flash.display.MovieClip’ since it is linked to a library symbol of that type.<\/li>\n<\/ol>\n
    So I added import flash.display.MovieClip;<\/code><\/p>\n
    \r\npackage  {\r\n\r\n\timport flash.display.MovieClip;\r\n\t\r\n\tpublic class Main extends MovieClip {\r\n\t\t\r\n\t\tpublic function Main() {\r\n\t\t\ttrace ('Main')\r\n\t\t}\r\n\t\t\r\n\t}\r\n\t\r\n}\r\n<\/code><\/pre>\n
    Ahhh and now we can get the stage to work with my ‘old code’, let’s paste it into the new document:<\/p>\n
    \r\npackage  {\r\n\r\n\timport flash.display.MovieClip;\r\n\t\r\n\tpublic class Main extends MovieClip {\r\n\t\t\r\n\t\tpublic function Main() {\r\n\t\t\ttrace ('Main')\r\n\t\t\t_root._quality = \"BEST\";\r\n\t\t\tStage.scaleMode = \"noScale\";\r\n\t\t\tStage.showMenu = false;\r\n\t\t\tStage.align = \"TL\";\r\n\t\t\t\r\n\t\t}\r\n\t\t\r\n\t}\r\n\t\r\n}\r\n<\/code><\/pre>\n
    Auw: both _root and Stage doesn’t excited no more: I got an migration error<\/em><\/p>\n
    \r\npackage  {\r\n\r\n\timport flash.display.MovieClip;\t\r\n\timport flash.display.Stage;\r\n\timport flash.display.StageQuality;\r\n\t\r\n\tpublic class Main extends MovieClip {\r\n\t\t\r\n\t\tpublic function Main() {\r\n\t\t\ttrace ('Main')\r\n\t\t\tstage.quality = StageQuality.BEST;\r\n\t\t\tstage.scaleMode = \"noScale\";\r\n\t\t\tstage.showDefaultContextMenu = false;\r\n\t\t\tstage.align = \"TL\";\r\n\t\t}\r\n\t\t\r\n\t}\r\n\t\r\n}\r\n<\/code><\/pre>\n
    And at last it works…
    \nThe only thing now to do, is to put it in the correct package.<\/p>\n","protected":false},"excerpt":{"rendered":"
    I finally started programming with ActionScript 3 (AS3); I know, I not a early adopter… \ud83d\ude09 And the first steps in AS3 are as uncomfortable as the first time I started OOP programming … or when I started moved from AS1 to AS2… Since I started working for NOISE 5 months ago and moved to […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,3],"tags":[68,39,97,408,398,114,168],"class_list":["post-359","post","type-post","status-publish","format-standard","hentry","category-as3","category-flash","tag-actionscript","tag-as2","tag-as2-to-as3","tag-as3","tag-flash","tag-from-as2-to-as3","tag-migration"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t