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POAS3 - TypeError: Error #1009
 

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  1. POAS3 - TypeError: Error #1009
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    <p>I'm trying to create a system that puts each block in a block Array which I can use to easily add blocks to the stage via XML, however I'm getting </p> <pre><code>[Fault] exception, information=TypeError: Error #1009: Cannot access a property or method of a null object reference. </code></pre> <p>When it initializes the 'blockStone'.</p> <p>Here's my main Block class, each block is initialized here.</p> <pre><code>package com.snakybo.platformengine.block { import flash.display.MovieClip; public class Block extends MovieClip { public static var blockList:Array = []; public static const blockStone:Block = (new BlockStone(0)); public var blockID:int; private var mc:MovieClip; public function Block(blockID:int, mc:MovieClip) { if (blockList[blockID] != null) { throw new Error("Slot " + blockID + " is already occupied by " + blockList[blockID] + " when adding " + this); } else { blockList[blockID] = this; this.blockID = blockID; this.mc = mc; mc.x = 100; mc.y = 100; addChild(mc); } } } } </code></pre> <p>Here's the BlockStone class:</p> <pre><code>package com.snakybo.platformengine.block { public class BlockStone extends Block { public function BlockStone(blockID:int) { super(blockID, new stone()); } } } </code></pre> <p>FlashDevelop refers to this line when it errors:</p> <pre><code>public class BlockStone extends Block { </code></pre> <p>Here's the stack trace:</p> <pre><code>TypeError: Error #1009: Cannot access a property or method of a null object reference. at global$init()[C:\Users\Kevin\Desktop\Extra\Code\Actionscript\PlatformEngine\src\com\snakybo\platformengine\block\BlockStone.as:3] at com.snakybo.platformengine.block::Block$cinit() at global$init()[C:\Users\Kevin\Desktop\Extra\Code\Actionscript\PlatformEngine\src\com\snakybo\platformengine\block\Block.as:5] at com.snakybo.platformengine::Game()[C:\Users\Kevin\Desktop\Extra\Code\Actionscript\PlatformEngine\src\com\snakybo\platformengine\Game.as:13] at com.snakybo.platformengine::Main/init()[C:\Users\Kevin\Desktop\Extra\Code\Actionscript\PlatformEngine\src\com\snakybo\platformengine\Main.as:20] at com.snakybo.platformengine::Main()[C:\Users\Kevin\Desktop\Extra\Code\Actionscript\PlatformEngine\src\com\snakybo\platformengine\Main.as:11] </code></pre> <p>I'm pretty sure it's a problem with AS3, since this method works in Java. I'm open to suggestions on better ways to do this in AS3 using block ID's defined in an XML file.</p> <p>Can anyone explain why this is happening? </p>
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    1. COwhat line is BlockStone.as:4
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    2. COThat's `public class BlockStone extends Block {`, I removed the `/** @author */`. I'll edit it
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    3. COLets verify something. comment out super(blockID, new stone()); and put in trace( new stone())
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      1. USThe_asMan
 

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