| 1234567891011121314151617 |
- <!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><!--[if IE]><meta http-equiv="X-UA-Compatible" content="IE=edge"><![endif]--><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="Asciidoctor 1.5.4"><meta name="keywords" content="basegame, control, input, init, keyinput, loop, states, state"><title>Main Update Loop</title><link rel="stylesheet" href="./asciidoctor.css">
- <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.5.0/css/font-awesome.min.css">
- <link rel="stylesheet" href="./coderay-asciidoctor.css"><link rel="stylesheet" href="https://cdn.jsdelivr.net/docsearch.js/2/docsearch.min.css"><link rel="stylesheet" href="/home/travis/build/jMonkeyEngine/wiki/build/asciidoc/html5/jme3/advanced/twemoji-awesome.css"></head><body class="article toc2 toc-left"><div id="header"><div id="toolbar"><a href="https://github.com/jMonkeyEngine/wiki/edit/master/src/docs/asciidoc/jme3/advanced/update_loop.adoc"><i class="fa fa-pencil-square" aria-hidden="true"></i></a><a href="https://github.com/jMonkeyEngine/wiki/new/master/src/docs/asciidoc/jme3/advanced/"><i class="fa fa-plus-square" aria-hidden="true"></i></a><input dir="auto" style="position: relative; vertical-align: top;" spellcheck="false" autocomplete="off" class="searchbox__input aa-input" id="doc-search" name="search" placeholder="Search in the doc" required="required" type="search"></div><h1>Main Update Loop</h1><div class="details"><span class="author" id="author"></span><br><span id="revnumber">version ,</span> <span id="revdate">2016/03/17 20:48</span></div><div id="toc" class="toc2"><div id="toctitle">Table of Contents</div><ul class="sectlevel1"><li><a href="#usage">Usage</a></li></ul></div></div><div id="content"><div id="preamble"><div class="sectionbody"><div class="paragraph"><p>Extending your application from com.jme3.app.<a href="../../jme3/intermediate/simpleapplication.html">SimpleApplication</a> provides you with an update loop. This is where you implement your game logic (game mechanics).</p></div>
- <div class="paragraph"><p>Some usage examples: Here you remote-control NPCs (computer controlled characters), generate game events, and respond to user input.</p></div>
- <div class="paragraph"><p>To let you see the main update loop in context, understand that the SimpleApplication does the following:</p></div>
- <div class="ulist"><ul><li><p><strong>Initialization</strong> – Execute <code>simpleInitApp()</code> method once.</p></li><li><p><strong>Main Update Loop</strong></p><div class="olist loweralpha"><ol class="loweralpha" type="a"><li><p>Input listeners respond to mouse clicks and keyboard presses – <a href="../../jme3/advanced/input_handling.html">Input handling</a></p></li><li><p>Update game state:</p><div class="olist lowerroman"><ol class="lowerroman" type="i"><li><p>Update overall game state – Execute <a href="../../jme3/advanced/application_states.html">Application States</a></p></li><li><p>User code update – Execute <code>simpleUpdate()</code> method</p></li><li><p>Logical update of entities – Execute <a href="../../jme3/advanced/custom_controls.html">Custom Controls</a></p></li></ol></div></li><li><p>Render audio and video</p><div class="olist lowerroman"><ol class="lowerroman" type="i"><li><p><a href="../../jme3/advanced/application_states.html">Application States</a> rendering.</p></li><li><p>Scene rendering.</p></li><li><p>User code rendering – Execute <code>simpleRender()</code> method.</p></li></ol></div></li><li><p>Repeat loop.</p></li></ol></div></li><li><p><strong>Quit</strong> – If user requests <code>exit()</code>, execute <code>cleanup()</code> and <code>destroy()</code>.<br>
- The jME window closes and the loop ends.</p></li></ul></div></div></div>
- <div class="sect1"><h2 id="usage">Usage</h2><div class="sectionbody"><div class="paragraph"><p>In a trivial <a href="../../jme3/intermediate/simpleapplication.html">SimpleApplication</a> (such as a <a href="../../jme3/beginner.html">Hello World tutorial</a>), all code is either in the <code>simpleInitApp()</code> (initialization) or <code>simpleUpdate()</code> (behaviour) method – or in a helper method/class that is called from one of these two. This trivial approach will make your main class very long, hard to read, and hard to maintain. You don’t need to load the whole scene at once, and you don’t need to run all conditionals tests all the time.</p></div>
- <div class="paragraph"><p>It’s a best practice to modularize your game mechanics and spread out initialization and update loop code over several Java objects:</p></div>
- <div class="ulist"><ul><li><p>Move modular code blocks from the <code>simpleInitApp()</code> method into <a href="../../jme3/advanced/application_states.html">AppStates</a>. Attach AppStates to initialize custom subsets of “one dungeon, and detach it when the player exits this “dungeon.<br>
- Examples: Weather/sky audio and visuals, physics collision shapes, sub-rootnodes of individual dungeons including dungeon NPCs, etc.</p></li><li><p>Move modular code blocks from the <code>simpleUpdate()</code> method into the update loops of <a href="../../jme3/advanced/custom_controls.html">Custom Controls</a> to control individual entity behavior (NPCs), and into the update method of <a href="../../jme3/advanced/application_states.html">AppStates</a> to control world events.<br>
- Examples: Weather behaviour, light behaviour, physics behaviour, individual NPC behaviour, trap behaviour, etc.</p></li></ul></div></div></div></div><div id="footer"><div id="footer-text">Version <br>Last updated 2019-12-20 23:30:51 +00:00</div></div><script type="text/javascript" src="https://cdn.jsdelivr.net/docsearch.js/2/docsearch.min.js"></script><script>docsearch({
- apiKey: 'a736b6d93de805e26ec2f49b55013fbd',
- indexName: 'jmonkeyengine',
- inputSelector: '#doc-search',
- debug: false // Set debug to true if you want to inspect the dropdown
- });</script></body></html>
|
