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<h2 class="section"> 4.18 Scripting Languages </h2>
<p><em>Written by Eric Sunshine, <a href="mailto:sunshine@sunshineco.com">sunshine@sunshineco.com</a>.</em>
</p>
<p>Crystal Space features bindings for several popular scripting and higher-level
languages. The list of languages includes Java, Perl, and Python.
</p>
<p>Some scripting language bindings also have corresponding Crystal Space plugins.
These can be loaded like any other plugins, and allow your C++ program to
interact with scripting code. Such plugins implement the <samp>‘iScript’</samp>
interface (see section <a href="iScript-Interface.html#0">The iScript Interface</a>), and it is by this interface that C++
code communicates with the scripting side. Conversely, scripting code can
interact with Crystal Space itself since most of the Crystal Space classes and
interfaces have been <em>exported</em> to the scripting side with the bindings.
</p>
<p>Some of the bindings are available as <em>pure</em> scripting modules which can
be <em>imported</em> directly into scripting code. This particularly powerful
facility allows you to create Crystal Space applications entirely in the
scripting language without writing any C++ code at all. Examples of these
types of scripts can be found in the installed scripting support directories
at:
</p>
<p><code>${prefix}/share/crystalspace/bindings</code>
</p>
<p>where ${prefix} is the installation location (typically, <tt>‘/usr/local’</tt>).
If you have not installed Crystal Space, then see the various subdirectories
of <tt>‘CS/scripts’</tt>.
</p>
<p>Crystal Space uses Swig (<a href="http://www.swig.org/">http://www.swig.org/</a>) to generate its
language bindings. The technology has been generalized enough that the
supported languages share a common Swig interface definition
(<tt>‘include/bindings/cspace.i’</tt>). Each language also has its own specific
definition files (<tt>‘include/bindings/*/*.i’</tt>). Because the binding
definitions are generalized, it should be possible to leverage off of
<tt>‘include/bindings/cspace.i’</tt> to create additional Crystal Space bindings
for any of the other languages supported by Swig with a minimal amount of
effort.
</p>
<table class="menu" border="0" cellspacing="0">
<tr><td align="left" valign="top"><a href="iScript-Interface.html#0">4.18.1 The iScript Interface</a></td><td> </td><td align="left" valign="top"></td></tr>
<tr><td align="left" valign="top"><a href="Java-Bindings.html#0">4.18.2 Java Bindings</a></td><td> </td><td align="left" valign="top">
</td></tr>
<tr><td align="left" valign="top"><a href="Perl-Bindings.html#0">4.18.3 Perl Bindings</a></td><td> </td><td align="left" valign="top">
</td></tr>
<tr><td align="left" valign="top"><a href="Python-Bindings.html#0">4.18.4 Python Bindings</a></td><td> </td><td align="left" valign="top">
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