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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">
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<title>Castle Game Engine: X3DNodes: Class TAbstractScriptNode</title>
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<h2>Castle Game Engine</h2><p><a href="introduction.html" class="navigation">Introduction</a></p><p><a href="AllUnits.html" class="navigation">Units</a></p><p><a href="ClassHierarchy.html" class="navigation">Class Hierarchy</a></p><p><a href="AllClasses.html" class="navigation">Classes, Interfaces, Objects and Records</a></p><p><a href="AllTypes.html" class="navigation">Types</a></p><p><a href="AllVariables.html" class="navigation">Variables</a></p><p><a href="AllConstants.html" class="navigation">Constants</a></p><p><a href="AllFunctions.html" class="navigation">Functions and Procedures</a></p><p><a href="AllIdentifiers.html" class="navigation">Identifiers</a></p></td><td class="content">
<a name="TAbstractScriptNode"></a><h1 class="cio">Class TAbstractScriptNode</h1>
<table class="sections wide_list">
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<td><a class="section" href="#PasDoc-Description">Description</a></td><td><a class="section" href="#PasDoc-Hierarchy">Hierarchy</a></td><td>Fields</td><td><a class="section" href="#PasDoc-Methods">Methods</a></td><td><a class="section" href="#PasDoc-Properties">Properties</a></td></tr></table>
<a name="PasDoc-Description"></a><h2 class="unit">Unit</h2>
<p class="unitlink">
<a href="X3DNodes.html">X3DNodes</a></p>
<h2 class="declaration">Declaration</h2>
<p class="declaration">
<code>type TAbstractScriptNode = class(<a class="normal" href="X3DNodes.TAbstractChildNode.html">TAbstractChildNode</a>, <a class="normal" href="X3DNodes.IAbstractUrlObject.html">IAbstractUrlObject</a>)</code></p>
<h2 class="description">Description</h2>
<div class="nodescription">no description available, TAbstractChildNode description follows</div><div class="nodescription">no description available, TAbstractNode description follows</div><p>
Base X3D node.
<p>Almost all X3D nodes inherit from this. (Exception: X3DMetadataObject. So you cannot have metadata of metadata of...)</p>
<a name="PasDoc-Hierarchy"></a><h2 class="hierarchy">Hierarchy</h2>
<ul class="hierarchy"><li class="ancestor">TPersistent</li>
<li class="ancestor"><a class="normal" href="CastleInterfaces.TNonRefCountedInterfacedPersistent.html">TNonRefCountedInterfacedPersistent</a></li>
<li class="ancestor"><a class="normal" href="X3DFields.TX3DFileItem.html">TX3DFileItem</a></li>
<li class="ancestor"><a class="normal" href="X3DNodes.TX3DNode.html">TX3DNode</a></li>
<li class="ancestor"><a class="normal" href="X3DNodes.TAbstractNode.html">TAbstractNode</a></li>
<li class="ancestor"><a class="normal" href="X3DNodes.TAbstractChildNode.html">TAbstractChildNode</a></li>
<li class="thisitem">TAbstractScriptNode</li></ul><h2 class="overview">Overview</h2>
<a name="PasDoc-Methods"></a><h3 class="summary">Methods</h3>
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<td class="visibility"><a href="legend.html"><img src="protected.gif" alt="Protected" title="Protected"></a></td>
<td class="itemcode"><code>procedure <b><a href="X3DNodes.TAbstractScriptNode.html#ExecuteScript">ExecuteScript</a></b>(const FunctionName: string; ReceivedValue: <a href="X3DFields.TX3DField.html">TX3DField</a>);</code></td>
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<td class="visibility"><a href="legend.html"><img src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>procedure <b><a href="X3DNodes.TAbstractScriptNode.html#CreateNode">CreateNode</a></b>; override;</code></td>
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<td class="itemcode"><code>destructor <b><a href="X3DNodes.TAbstractScriptNode.html#Destroy">Destroy</a></b>; override;</code></td>
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<td class="itemcode"><code>procedure <b><a href="X3DNodes.TAbstractScriptNode.html#ResetLastEventTimes">ResetLastEventTimes</a></b>;</code></td>
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<a name="PasDoc-Properties"></a><h3 class="summary">Properties</h3>
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<td class="itemcode"><code>property <b><a href="X3DNodes.TAbstractScriptNode.html#FdUrl">FdUrl</a></b>: <a href="X3DFields.TMFString.html">TMFString</a> read FFdUrl;</code></td>
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<td class="visibility"><a href="legend.html"><img src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>property <b><a href="X3DNodes.TAbstractScriptNode.html#Initialized">Initialized</a></b>: boolean read FInitialized write SetInitialized
default false;</code></td>
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<h2 class="description">Description</h2>
<h3 class="detail">Methods</h3>
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<td class="visibility"><a href="legend.html"><img src="protected.gif" alt="Protected" title="Protected"></a></td>
<td class="itemcode"><a name="ExecuteScript"></a><code>procedure <b>ExecuteScript</b>(const FunctionName: string; ReceivedValue: <a href="X3DFields.TX3DField.html">TX3DField</a>);</code></td>
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<td class="itemcode"><a name="CreateNode"></a><code>procedure <b>CreateNode</b>; override;</code></td>
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<td class="itemcode"><a name="Destroy"></a><code>destructor <b>Destroy</b>; override;</code></td>
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<td class="itemcode"><a name="ResetLastEventTimes"></a><code>procedure <b>ResetLastEventTimes</b>;</code></td>
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<tr><td colspan="2">
<p>
Clear the memory when the last events were generated from this script.
<p> TCasScriptVRMLValuesList.ResetLastEventTimes</p>
<h6 class="description_section">See also</h6>
<dl class="see_also">
<dt><a class="normal" href="X3DNodes.TX3DRoute.html#ResetLastEventTime">TX3DRoute.ResetLastEventTime</a></dt>
<dd>Clear the memory when the last event passed through this route.</dd>
</dl>
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<h3 class="detail">Properties</h3>
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<td class="visibility"><a href="legend.html"><img src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="FdUrl"></a><code>property <b>FdUrl</b>: <a href="X3DFields.TMFString.html">TMFString</a> read FFdUrl;</code></td>
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<td class="itemcode"><a name="Initialized"></a><code>property <b>Initialized</b>: boolean read FInitialized write SetInitialized
default false;</code></td>
</tr>
<tr><td colspan="2">
<p>
Initialize / shutdown of the script. Read this to know current script state, write this is to actually initialize/shutdown if needed.
<p>Note that the script node doesn't initialize itself at any point. Reason: there's no comfortable moment to do this: 1. in constructor some routes and such are not initialized yet, and we should initialize script after whole VRML graph is loaded. 2. tricks with <a class="normal" href="X3DNodes.TX3DNode.html#BeforeTraverse">BeforeTraverse</a>, like used for <a class="normal" href="X3DNodes.TInlineNode.html">TInlineNode</a>, are not Ok, since scripts must work even when they are in the inactive part of VRML graph.
<p>If you want scripts to work, you have to initialize them yourself. If you use <a class="normal" href="CastleSceneCore.TCastleSceneCore.html">TCastleSceneCore</a>, this will be done for you automatically when you change <a class="normal" href="CastleSceneCore.TCastleSceneCore.html#ProcessEvents">TCastleSceneCore.ProcessEvents</a>, so it's not a problem in practice.</p>
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