new formula - OpenTTD

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

Formula/openttd.rb

@@ -0,0 +1,23 @@
+require 'formula'
+
+class Openttd <Formula
+  url 'http://binaries.openttd.org/releases/1.0.3/openttd-1.0.3-source.tar.bz2'
+  homepage 'http://www.openttd.org/'
+  md5 'cff60c624913a491ed3c91474e845722'
+
+  depends_on 'libpng'
+  depends_on 'lzo'
+
+  def install
+    system "./configure", "--without-application-bundle", "--prefix-dir=#{prefix}"
+    system "make install"
+    bin.install "bin/openttd"
+  end
+
+  def caveats; <<-EOS.undent
+    Note: This does not install any art assets. You will be prompted
+    on first run to download an asset set.
+    Having an original TTD CD will help.
+    EOS
+  end
+end