stuntrally: updating from 1.4 to 1.8

I updated ogre and mygui, too. Now myguiSvn is older than mygui.
We should check if this commit breaks other games that use ogre (ror?)

pkgs/games/stuntrally/default.nix

@@ -1,15 +1,33 @@
-{ fetchurl, stdenv, cmake, boost, ogre, myguiSvn, ois, SDL, libvorbis, pkgconfig
-, makeWrapper }:
+{ fetchgit, stdenv, cmake, boost, ogre, mygui, ois, SDL, libvorbis, pkgconfig
+, makeWrapper, enet, libXcursor }:
 
 stdenv.mkDerivation rec {
-  name = "stunt-rally-1.4";
+  name = "stunt-rally-1.8";
 
-  src = fetchurl {
-    url = mirror://sourceforge/stuntrally/StuntRally-1.4-sources.tar.bz2;
-    sha256 = "1am5af4l1qliyrq1183sqvwzqwcjx0v6gkzsxhfmk6ygp7yhw7kq";
+  src = fetchgit {
+    url = git://github.com/stuntrally/stuntrally.git;
+    rev = "refs/tags/1.8";
+    sha256 = "0p8p83xx8q33kymsqnmxqca4jdfyg9rwrsac790z56gdbc7gnahm";
   };
 
-  buildInputs = [ cmake boost ogre myguiSvn ois SDL libvorbis pkgconfig makeWrapper ];
+  tracks = fetchgit {
+    url = git://github.com/stuntrally/tracks.git;
+    rev = "refs/tags/1.8";
+    sha256 = "1gcrs21nn0v3hvhrw8dc0wh1knn5qh66cjx7a1igiciiadmi2s3l";
+  };
+
+  patchPhase = ''
+    sed -i 's/materials/materials material_templates/' data/CMakeLists.txt
+  '';
+
+  preConfigure = ''
+    mkdir data/tracks
+    cp -R $tracks/* data/tracks
+  '';
+
+  buildInputs = [ cmake boost ogre mygui ois SDL libvorbis pkgconfig makeWrapper enet
+    libXcursor
+  ];
 
   # I think they suppose cmake should give them OGRE_PLUGIN_DIR defined, but
   # the cmake code I saw is not ready for that. Therefore, we use the env var.