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<title>A Text Adventure in Python</title>
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<h1>PyOhio</h1>
<h2>27 July 2013</h2>
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<h1>A Text Adventure in Python</h1>
<h2>Exploring the Standard Library</h2>
<h3>Jeffrey B. Armstrong</h3>
<h4>Approximatrix, LLC</h4>
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<h1>Introduction</h1>
<p><img src="zork.png" style="border:0px; float:right; height:14em;" alt="" /></p>
<ul>
	<li>Build a text adventure
	<ul>
		<li>with only the standard library</li>
	</ul></li>
	<li>Basic steps to start a game</li>
	<li>Introduce some fun Python modules</li>
</ul>

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<h1>History</h1>
<p><img src="disks.png" style="border:0px; float:right; height:9em;" alt="" /></p>
<ul>
	<li>Text Adventures/Interactive Fiction
	<ul>
		<li>Popular when graphics were a &#8220;problem&#8221;</li>
		<li>Multiple commercial entities</li>
	</ul></li>
	<li>Still enjoy &#8220;cult&#8221; following</li>
</ul>

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<h1>Follow Along!</h1>
<p><a href="https://github.com/ArmstrongJ/pyohio2013">https://github.com/ArmstrongJ/pyohio2013</a></p>

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<h1>Necessities</h1>
<ul>
	<li>Command prompt</li>
	<li>Locations to visit</li>
	<li>Game file(s) describing our world</li>
	<li>Puzzles, items, characters, etc.</li>
</ul>

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<h1>Command Prompts</h1>
<ul>
	<li><strong>cmd</strong> module
	<ul>
		<li>Provides &#8220;support for line-oriented command interpreters&#8221;</li>
		<li>Absurdly simple to implement</li>
		<li>Might lack some power</li>
	</ul></li>
</ul>

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<h1>Locations</h1>
<ul>
	<li><strong>Room</strong> class
	<ul>
		<li>Needs an id, name, description</li>
		<li>List of connected rooms</li>
		<li>List of items in the room</li>
		<li>List of NPCs in the room</li>
	</ul></li>
</ul>

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<h1>Persistent Rooms</h1>
<ul>
	<li><strong>pickle</strong>
	<ul>
		<li>Lets us serialize our rooms easily</li>
		<li>Not editable</li>
	</ul></li>
	<li>Plain ol&#8217; text files
	<ul>
		<li>Hand-editable</li>
		<li>Implies some arbitrary formatting</li>
	</ul></li>
</ul>

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<h1>Persistent Rooms</h1>
<ul>
	<li><strong>json</strong> module
	<ul>
		<li>Allows &#8220;serializing&#8221; our rooms</li>
		<li>Hand-editable</li>
		<li>Expandable via adding fields</li>
	</ul></li>
</ul>

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<h1>Text Wrapping</h1>
<ul>
	<li><strong>textwrap</strong>
	<ul>
		<li>Automagically handles our wrapping needs</li>
	</ul></li>
</ul>

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<h1>Data Files</h1>
<ul>
	<li><strong>sqlite3</strong> module
	<ul>
		<li>Simple SQL database</li>
		<li>Store the entire game in a single file</li>
	</ul></li>
</ul>

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<h1>Data Files</h1>
<ul>
	<li><strong>tempfile</strong> module
	<ul>
		<li>Make a temporary, working copy of the game</li>
	</ul></li>
	<li><strong>shutil</strong> module
	<ul>
		<li>For copying the clean game file to a temp file</li>
		<li>For creating our saves</li>
	</ul></li>
</ul>

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<h1>What&#8217;s Missing?</h1>
<ul>
	<li>Status Bar
	<ul>
		<li><strong>curses</strong> module is the key</li>
	</ul></li>
	<li>NPCs</li>
	<li>Puzzles</li>
	<li>&#8220;Advanced&#8221; text parsing</li>
</ul>

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<h1>Where We&#8217;ve Been</h1>
<ul>
	<li><strong>cmd</strong></li>
	<li><strong>json</strong></li>
	<li><strong>textwrap</strong></li>
	<li><strong>sqlite3</strong></li>
	<li><strong>tempfile</strong></li>
	<li><strong>shutil</strong></li>
</ul>

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<h1>Want More?</h1>
<ul>
	<li>https://github.com/ArmstrongJ/
	<ul>
		<li>An older, actual adventure named <strong>robotadventure</strong></li>
	</ul></li>
	<li>http://www.pyweek.org/
	<ul>
		<li>A reason to write your own</li>
	</ul></li>
	<li>http://www.ifcomp.org/
	<ul>
		<li>If you think yours is worthy&#8230;</li>
	</ul></li>
</ul>

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<h1>Thanks!</h1>
<p style="text-align:center;"><a href="https://twitter.com/fortranjeff">@fortranjeff</a> on Twitter</p>
<p style="text-align:center;"><a href="http://jeff.rainbow-100.com">http://jeff.rainbow-100.com</a></p>
<p style="text-align:center;"><strong>jeff@rainbow-100.com</strong></p></div>


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