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docs/1.0-dev/Howto/Weather-Tutorial.html
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@ -14,6 +14,8 @@
<script src="../_static/underscore.js"></script>
<script src="../_static/doctools.js"></script>
<script src="../_static/language_data.js"></script>
<script async="async" src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.7/latest.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script type="text/x-mathjax-config">MathJax.Hub.Config({"tex2jax": {"processClass": "tex2jax_process|mathjax_process|math|output_area"}})</script>
<link rel="shortcut icon" href="../_static/favicon.ico"/>
<link rel="index" title="Index" href="../genindex.html" />
<link rel="search" title="Search" href="../search.html" />
@ -38,7 +40,7 @@
<div class="bodywrapper">
<div class="body" role="main">
<section id="weather-tutorial">
<section class="tex2jax_ignore mathjax_ignore" id="weather-tutorial">
<h1>Weather Tutorial<a class="headerlink" href="#weather-tutorial" title="Permalink to this headline"></a></h1>
<p>This tutorial will have us create a simple weather system for our MUD. The way we want to use this
is to have all outdoor rooms echo weather-related messages to the room at regular and semi-random
@ -49,31 +51,11 @@ using a “ticker-subscription” model. The principle is simple: Instead of hav
individually track the time, they instead subscribe to be called by a global ticker who handles time
keeping. Not only does this centralize and organize much of the code in one place, it also has less
computing overhead.</p>
<p>Evennia offers the <a class="reference internal" href="../Components/TickerHandler.html"><span class="doc">TickerHandler</span></a> specifically for using the subscription model. We
<p>Evennia offers the <a class="reference internal" href="../Components/TickerHandler.html"><span class="doc std std-doc">TickerHandler</span></a> specifically for using the subscription model. We
will use it for our weather system.</p>
<p>We will assume you know how to make your own Typeclasses. If not see one of the beginning tutorials.
We will create a new WeatherRoom typeclass that is aware of the day-night cycle.</p>
<div class="highlight-python notranslate"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span class="normal"> 1</span>
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<span class="normal">21</span></pre></div></td><td class="code"><div class="highlight"><pre><span></span>
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span>
<span class="kn">import</span> <span class="nn">random</span>
<span class="kn">from</span> <span class="nn">evennia</span> <span class="kn">import</span> <span class="n">DefaultRoom</span><span class="p">,</span> <span class="n">TICKER_HANDLER</span>
@ -95,7 +77,7 @@ We will create a new WeatherRoom typeclass that is aware of the day-night cycle.
<span class="n">echo</span> <span class="o">=</span> <span class="n">random</span><span class="o">.</span><span class="n">choice</span><span class="p">(</span><span class="n">ECHOES</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">msg_contents</span><span class="p">(</span><span class="n">echo</span><span class="p">)</span>
</pre></div>
</td></tr></table></div>
</div>
<p>In the <code class="docutils literal notranslate"><span class="pre">at_object_creation</span></code> method, we simply added ourselves to the TickerHandler and tell it to
call <code class="docutils literal notranslate"><span class="pre">at_weather_update</span></code> every hour (<code class="docutils literal notranslate"><span class="pre">60*60</span></code> seconds). During testing you might want to play with a
shorter time duration.</p>
@ -146,7 +128,7 @@ weather came before it. Expanding it to be more realistic is a useful exercise.<
<h3>Versions</h3>
<ul>
<li><a href="Weather-Tutorial.html">1.0-dev (develop branch)</a></li>
<li><a href="../../0.9.5/index.html">0.9.5 (v0.9.5 branch)</a></li>
<li><a href="../../0.95/index.html">0.95 (v0.9.5 branch)</a></li>
</ul>
</div>