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<h2 class="appendixsec"> C.4 Release Notes from 0.94 to 0.96 </h2>
<p>This section documents the major changes between versions 0.94 and 0.96 of of
Crystal Space.
</p>
<a name="1"></a>
<h3 class="subheading"> Reference Counting Utilities </h3>
<p>The new template class <code>csRef<></code> automates reference count manipulation,
thus freeing programmers from the task of manipulating reference counts
manually. When assigned, <code>csRef<></code> increments the reference count of the
target object by invoking the object's <code>IncRef()</code> method. When the
<code>csRef<></code> is destroyed, or when it is re-assigned, it decrements the
object's reference count via <code>DecRef()</code>. This frees clients from having
to invoke <code>IncRef()</code> and <code>DecRef()</code> manually, thus helping to
alleviate a potential source of resource leaks. The companion template
<code>csPtr<></code> has also been added as a micro-optimization for certain cases
when it is desirable to avoid reference count manipulation during assignment.
See the smart pointer <small>HOWTO</small> for additional information,
<a href="Smart-Pointers.html#0">Correctly Using Smart Pointers</a>. Also see the <small>API</small> documentation for
<code>csRef<></code> and <code>csPtr<></code>.
</p>
<p>The Crystal Space <small>API</small> has been largely updated to return <code>csRef<></code>
and <code>csPtr<></code> from functions which transfer ownership of an object to the
caller of the function. Client code which used to assign results of such
function calls to a normal pointer and invoke <code>IncRef()</code> on that pointer
should now instead simply assign the result to a <code>csRef<></code>, and allow the
reference count to be managed automatically. See the smart pointer <small>HOWTO</small>
for complete details. See section <a href="Smart-Pointers.html#0">Correctly Using Smart Pointers</a>.
</p>
<a name="2"></a>
<h3 class="subheading"> iPolygonMesh changes </h3>
<p>The header for <samp>‘iPolygonMesh’</samp> has moved from <tt>‘include/ivaria’</tt>
to <tt>‘include/igeom’</tt>.
</p>
<a name="3"></a>
<h3 class="subheading"> iMeshObject changes </h3>
<p>The following functions have been removed:
</p>
<ul>
<li>
<code>iMeshObject::GetShapeNumber()</code>
</li><li>
<code>iMeshObject::GetObjectBoundingBox()</code>
</li><li>
<code>iMeshObject::GetRadius()</code>
</li></ul>
<p>Instead there is now a new routine called
<code>iMeshObject::GetObjectModel()</code> which will return an instance of
<samp>‘iObjectModel’</samp>. The functions can be called from that instance.
</p>
<p>A similar change has taken place in the <samp>‘iVisibilityObject’</samp> interface.
</p>
<a name="4"></a>
<h3 class="subheading"> <small>XML</small> </h3>
<p>The map format has changed to <small>XML</small>. Use the <tt>‘cs2xml’</tt> tool to
convert old maps like this (with a real path to a zip file):
</p>
<table><tr><td> </td><td><pre class="example"> cs2xml data/oldlevel.zip
</pre></td></tr></table>
<p>or (with a <small>VFS</small> path):
</p>
<table><tr><td> </td><td><pre class="example"> cs2xml /this/mydata/sprite1
</pre></td></tr></table>
<a name="5"></a>
<h3 class="subheading"> csGetObject and csGetCommand </h3>
<p>The old parser is gone. We switched to <small>XML</small>.
</p>
<a name="6"></a>
<h3 class="subheading"> Fast <small>SCF</small> Interfaces </h3>
<p>The following macros have been removed:
</p>
<ul>
<li>
<code>SCF_QUERY_INTERFACE_FAST</code>
</li><li>
<code>CS_GET_CHILD_OBJECT_FAST</code>
</li><li>
<code>CS_GET_NAMED_CHILD_OBJECT_FAST</code>
</li><li>
<code>CS_GET_FIRST_NAMED_CHILD_OBJECT_FAST</code>
</li><li>
<code>SCF_DECLARE_FAST_INTERFACE</code>
</li></ul>
<p>Fast interfaces are now default. Just use the
normal query versions instead of the ones above.
</p>
<a name="7"></a>
<h3 class="subheading"> Internal <small>SCF</small> Changes </h3>
<p>For interfaces the <samp>‘scfGetID_Interfacename’</samp> and the
<samp>‘VERSION_Interfacename’</samp> have been renamed to
<samp>‘Interfacename_scfGetID’</samp> and <samp>‘Interfacename_VERSION’</samp> for making
namespaces working nicely with them.
</p>
<a name="8"></a>
<h3 class="subheading"> Make Targets </h3>
<p>Some targets for the <samp>‘make’</samp> facility (all applications, some plugins) have
changed. In general, the name of a target is now the same as the name of the
resulting binary (without suffix). For example, <tt>‘walktest’</tt> is now built
with <samp>‘make -k walktest’</samp> instead of <samp>‘make -k walk’</samp>. However, the
composite target names have not been changed. To build <tt>‘walktest’</tt> and all
required plugins, one still invokes <samp>‘make -k walkall’</samp>.
</p>
<a name="9"></a>
<h3 class="subheading"> Sound Loader Changes </h3>
<p>The <code>iLoader::LoadSound()</code> that returns an <code>iSoundWrapper</code>
now returns a pointer that has a reference count of one more compared
to before.
</p>
<a name="10"></a>
<h3 class="subheading"> iTextureManager Changes </h3>
<p>The following methods have moved:
</p>
<ul>
<li>
<code>iTextureManager::FindRGB()</code> => <code>iGraphics2D::FindRGB()</code>
</li></ul>
<p>The following methods were eliminated:
</p>
<ul>
<li>
<code>iTextureManager::SetPalette()</code>
</li><li>
<code>iTextureManager::ResetPalette()</code>
</li><li>
<code>iTextureManager::ReserveColor()</code>
</li></ul>
<a name="11"></a>
<h3 class="subheading"> Procedural Textures </h3>
<p>The procedural texture system has been rewritten. See the documentation for
<code>iGraphics3D::SetRenderTarget()</code> for details.
</p>
<a name="12"></a>
<h3 class="subheading"> Hardmove Change </h3>
<p>The interpretation of the matrix used in the <samp>‘hardmove’</samp> tag
for mesh factories (<samp>‘meshfact’</samp>) has been inverted so it is more
logical and also corresponds with the wah <samp>‘hardmove’</samp> is interpreted
for mesh objects (<samp>‘meshobj’</samp>).
</p>
<a name="13"></a>
<h3 class="subheading"> Octree Removal </h3>
<p>The old octree culler is now completely gone. Instead you should use
<em>Dynavis</em> now. If you still have an old level that uses this culler
then you can try to convert it using the <tt>‘levtool’</tt> utility but this
is only a temporary measure. It is a lot better to design the level with
<em>Dynavis</em> in mind. To convert an old level do this:
</p>
<table><tr><td> </td><td><pre class="example"> levtool -dynavis old_level.zip
</pre></td></tr></table>
<p>Note that the statements <samp>‘culler’</samp> and <samp>‘vistree’</samp> are no longer
supported in world files. The loader will give an error if it finds them.
</p>
<a name="14"></a>
<h3 class="subheading"> Typed Vectors </h3>
<p>All the macro versions of the growing arrays and vectors have been removed
and replaced with corresponding templated arrays (see section <a href="csUtil.html#0">Utility Library (<code>csUtil</code>)</a>). For
example, the following macros and all derivatives have been removed:
</p>
<ul>
<li>
<code>CS_DECLARE_TYPED_VECTOR</code>
</li><li>
<code>CS_DECLARE_OBJECT_VECTOR</code>
</li><li>
<code>CS_DECLARE_GROWING_ARRAY</code>
</li></ul>
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