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POActionscript 3: How do I access the properties of the document class?
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  1. POActionscript 3: How do I access the properties of the document class?
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    copied!<p>When I try to access some of the private properties of the document class from another class, it outputs this error:</p> <pre><code>1119: Access of possibly undefined property _player through a reference with static type flash.display:Stage. </code></pre> <p>Here's the code from the document class:</p> <pre><code> package { import flash.display.MovieClip; import flash.events.Event; import flash.events.KeyboardEvent; import flash.utils.Timer; import flash.events.TimerEvent; import flash.ui.Keyboard; import collision; import player; import ground; public class engine extends MovieClip { public var _player:player; private var _ground:ground; private var _collision:collision; private var _right:Boolean; private var _space:Boolean; private var _left:Boolean; private var _touchGround:Boolean; private var _jump:Boolean; private var _jumpVel:int; private var _q:int; private var _vx:int; private var _vy:int; public function engine() { _player = new player(); _ground = new ground(); _collision = new collision(); addChild(_player); addChild(_ground); _player.x = stage.stageWidth/2 - _player.width/2; _player.y = stage.stageHeight/2 - _player.height/2; _ground.x = stage.stageWidth/2 - _ground.width/2; _ground.y = stage.stageHeight/2 - _ground.height/2; _ground.y += 150; _ground.x += 300; _q = 0; stage.addEventListener(Event.ENTER_FRAME, enterFrame); stage.addEventListener(KeyboardEvent.KEY_DOWN,keyDownHandler); stage.addEventListener(KeyboardEvent.KEY_UP,keyUpHandler); } private function enterFrame(e:Event) { if(_right) { if(_vx &gt; 15) { _vx = 15; } _vx += 2; } if(_left) { if(_vx &lt; -15) { _vx = -15; } _vx -= 2; } if(_space &amp;&amp; _touchGround) { _jump = true; } if(_jump) { _jumpVel = 20 - _q; if(_q == 20) { _q = 0; _jumpVel = 0; _jump = false; } else { _ground.y += _jumpVel; _q ++; } } _collision.detectCollisions(); _ground.x -= _vx; _ground.y += _vy; if(_vx &gt; 0) { _vx--; if(_vx &lt; 0) { _vx = 0; } } else if(_vx &lt; 0) { _vx++; if(_vx &gt; 0) { _vx = 0; } } if(_vy &gt; 0) { _vy = 0; } else if(_vy &lt; -10) { _vy = -10; } trace(_vy); } private function keyDownHandler(e:KeyboardEvent) { if(e.keyCode == Keyboard.RIGHT) { _right = true; } if(e.keyCode == Keyboard.LEFT) { _left = true; } if(e.keyCode == Keyboard.SPACE) { _space = true; } } private function keyUpHandler(e:KeyboardEvent) { if(e.keyCode == Keyboard.RIGHT) { _right = false; } if(e.keyCode == Keyboard.LEFT) { _left = false; } if(e.keyCode == Keyboard.SPACE) { _space = false; } } } } </code></pre> <p>Here's the code from the 'collision' class.</p> <pre><code>package { import flash.display.MovieClip; import player; import engine; public class collision extends MovieClip { private var _playerCol:player = engine._player; public function collision() { } public function detectCollisions():void { _playerCol.y += 7; } } } </code></pre> <p>I'm trying to access the property '_player' from the collision class, but am getting an error.</p>
 

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