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Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/_c_life_engine_8cpp_source.html
author Dominic Pinkman <dominic.pinkman@nokia.com>
Fri, 13 Aug 2010 16:47:46 +0100
changeset 14 578be2adaf3e
parent 6 43e37759235e
permissions -rw-r--r--
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
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<title>TB9.2 Example Applications: examples/Graphics/WS/Direct/CLifeEngine.cpp Source File</title>
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<link href="tabs.css" rel="stylesheet" type="text/css"/>
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<link href="doxygen.css" rel="stylesheet" type="text/css"/>
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</head>
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<body>
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<!-- Generated by Doxygen 1.6.2 -->
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<h1>examples/Graphics/WS/Direct/CLifeEngine.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).</span>
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<a name="l00002"></a>00002 <span class="comment">// All rights reserved.</span>
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<a name="l00003"></a>00003 <span class="comment">// This component and the accompanying materials are made available</span>
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<a name="l00004"></a>00004 <span class="comment">// under the terms of &quot;Eclipse Public License v1.0&quot;</span>
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<a name="l00005"></a>00005 <span class="comment">// which accompanies this distribution, and is available</span>
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<a name="l00006"></a>00006 <span class="comment">// at the URL &quot;http://www.eclipse.org/legal/epl-v10.html&quot;.</span>
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<a name="l00007"></a>00007 <span class="comment">//</span>
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<a name="l00008"></a>00008 <span class="comment">// Initial Contributors:</span>
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<a name="l00009"></a>00009 <span class="comment">// Nokia Corporation - initial contribution.</span>
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<a name="l00010"></a>00010 <span class="comment">//</span>
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<a name="l00011"></a>00011 <span class="comment">// Contributors:</span>
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<a name="l00012"></a>00012 <span class="comment">//</span>
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<a name="l00013"></a>00013 <span class="comment">// Description:</span>
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<a name="l00014"></a>00014 <span class="comment">//</span>
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<a name="l00015"></a>00015
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<a name="l00016"></a>00016 <span class="preprocessor">#include &lt;e32math.h&gt;</span>
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<a name="l00017"></a>00017
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<a name="l00018"></a>00018 <span class="preprocessor">#include &quot;CLifeEngine.h&quot;</span>
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<a name="l00019"></a>00019
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<a name="l00020"></a>00020 CLifeEngine::CLifeEngine(<span class="keyword">const</span> TInt64&amp; aSeed)
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<a name="l00021"></a>00021 : iSeed(aSeed)
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<a name="l00022"></a>00022         {
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<a name="l00023"></a>00023         Reset();
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<a name="l00024"></a>00024         }
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<a name="l00025"></a>00025
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<a name="l00026"></a>00026 <span class="comment">// Sets random initial cell states</span>
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<a name="l00027"></a>00027 <span class="keywordtype">void</span> CLifeEngine::Reset()
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<a name="l00028"></a>00028         {
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<a name="l00029"></a>00029         <span class="keywordflow">for</span> (TInt y=0; y &lt; DIM_Y_ARRAY; y++)
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<a name="l00030"></a>00030                 <span class="keywordflow">for</span> (TInt x=0; x &lt; DIM_X_ARRAY; x++)
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<a name="l00031"></a>00031                         iCellArray[x][y] = (Math::Rand(iSeed) &gt; KMaxTInt/2) ? (TBool)ETrue : (TBool)EFalse;
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<a name="l00032"></a>00032         }
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<a name="l00033"></a>00033
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<a name="l00034"></a>00034 <span class="comment">// Loops through cell array, storing a version altered according to the </span>
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<a name="l00035"></a>00035 <span class="comment">// game of life, in a temporary array</span>
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<a name="l00036"></a>00036 <span class="keywordtype">void</span> CLifeEngine::AddGeneration()
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<a name="l00037"></a>00037         {
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<a name="l00038"></a>00038         TInt numNeighbours;
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<a name="l00039"></a>00039
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<a name="l00040"></a>00040         <span class="keywordflow">for</span> (TInt y=0; y &lt; DIM_Y_ARRAY; y++)
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<a name="l00041"></a>00041                 {
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<a name="l00042"></a>00042                 <span class="keywordflow">for</span> (TInt x=0; x &lt; DIM_X_ARRAY; x++)
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<a name="l00043"></a>00043                         {
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<a name="l00044"></a>00044                         numNeighbours=NumNeighbors(x,y);
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<a name="l00045"></a>00045
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<a name="l00046"></a>00046                         <span class="keywordflow">if</span> (iCellArray[x][y])
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<a name="l00047"></a>00047                                 <span class="comment">// Filled cell</span>
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<a name="l00048"></a>00048                                 {
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<a name="l00049"></a>00049                                 <span class="keywordflow">if</span> ((numNeighbours == 2) || (numNeighbours == 3))
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<a name="l00050"></a>00050                                         iTempCellArray[x][y]=ETrue;
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<a name="l00051"></a>00051                                 <span class="keywordflow">else</span>
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<a name="l00052"></a>00052                                         iTempCellArray[x][y]=EFalse;
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<a name="l00053"></a>00053                                 }
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<a name="l00054"></a>00054                         <span class="keywordflow">else</span>
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<a name="l00055"></a>00055                                 <span class="comment">// Empty cell</span>
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<a name="l00056"></a>00056                                 {
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<a name="l00057"></a>00057                                 <span class="keywordflow">if</span> (numNeighbours == 3)
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<a name="l00058"></a>00058                                         iTempCellArray[x][y]=ETrue;
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<a name="l00059"></a>00059                                 <span class="keywordflow">else</span>
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<a name="l00060"></a>00060                                         iTempCellArray[x][y]=EFalse;
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<a name="l00061"></a>00061                                 }
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<a name="l00062"></a>00062                         }
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<a name="l00063"></a>00063                 }
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<a name="l00064"></a>00064
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<a name="l00065"></a>00065         <span class="keywordflow">for</span> (TInt y2 =0; y2 &lt; DIM_Y_ARRAY; y2++)
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<a name="l00066"></a>00066                 <span class="keywordflow">for</span> (TInt x2=0; x2 &lt; DIM_X_ARRAY; x2++)
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<a name="l00067"></a>00067                         iCellArray[x2][y2]=iTempCellArray[x2][y2];
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<a name="l00068"></a>00068         }
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<a name="l00069"></a>00069
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<a name="l00070"></a>00070
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<a name="l00071"></a>00071 <span class="comment">// Gets the number of adjacent cells to the specified cell</span>
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<a name="l00072"></a>00072 TInt CLifeEngine::NumNeighbors(TInt x, TInt y)
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<a name="l00073"></a>00073         {
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<a name="l00074"></a>00074         TInt numNeighbors=0;
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<a name="l00075"></a>00075         TInt i =0;
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<a name="l00076"></a>00076
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<a name="l00077"></a>00077         <span class="comment">// Get neighbors to the left</span>
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<a name="l00078"></a>00078         <span class="keywordflow">if</span> ((x-1) &gt;= 0)
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<a name="l00079"></a>00079                 <span class="keywordflow">for</span> (i=y-1; i &lt;= y+1; i++)
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<a name="l00080"></a>00080                         <span class="keywordflow">if</span> ((i &gt;= 0) &amp;&amp; (i &lt; DIM_Y_ARRAY))
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<a name="l00081"></a>00081                                 <span class="keywordflow">if</span> (iCellArray[x-1][i])
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<a name="l00082"></a>00082                                         numNeighbors++;
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<a name="l00083"></a>00083
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<a name="l00084"></a>00084         <span class="comment">// Get neighbors to the right</span>
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<a name="l00085"></a>00085         <span class="keywordflow">if</span> (x+1 &lt; DIM_X_ARRAY)
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<a name="l00086"></a>00086                 <span class="keywordflow">for</span> (i=y-1; i &lt;= y+1; i++)
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<a name="l00087"></a>00087                         <span class="keywordflow">if</span> ((i &gt;= 0) &amp;&amp; (i &lt; DIM_Y_ARRAY))
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<a name="l00088"></a>00088                                 <span class="keywordflow">if</span> (iCellArray[x+1][i])
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<a name="l00089"></a>00089                                         numNeighbors++;
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<a name="l00090"></a>00090
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<a name="l00091"></a>00091         <span class="comment">// Get neighbors straight above</span>
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<a name="l00092"></a>00092         <span class="keywordflow">if</span> ((y-1) &gt;= 0)
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<a name="l00093"></a>00093                 <span class="keywordflow">if</span> (iCellArray[x][y-1])
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<a name="l00094"></a>00094                         numNeighbors++;
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<a name="l00095"></a>00095
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<a name="l00096"></a>00096         <span class="comment">// Get neighbors straight below</span>
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<a name="l00097"></a>00097         <span class="keywordflow">if</span> ((y+1) &lt; DIM_Y_ARRAY)
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<a name="l00098"></a>00098                 <span class="keywordflow">if</span> (iCellArray[x][y+1])
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<a name="l00099"></a>00099                         numNeighbors++;
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<a name="l00100"></a>00100
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<a name="l00101"></a>00101         <span class="keywordflow">return</span> numNeighbors;
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<a name="l00102"></a>00102         }
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</pre></div></div>
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<hr size="1"/><address style="text-align: right;"><small>Generated by&nbsp;
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<a href="http://www.doxygen.org/index.html">
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<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.2 </small></address>
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</body>
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</html>
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