build.xml

<?xml version="1.0" encoding="UTF-8"?>
<project name="Oregon Trail" default="jar" basedir=".">
  <property name="src.dir"     value="src" />
  <property name="lib.dir"     value="lib" />
  <property name="build.dir"   value="build" />
  <property name="classes.dir" value="${build.dir}/classes" />
  <property name="jar.dir"     value="${build.dir}/jar" />
  <property name="classname" value="core.GameDirector" />
  <property name="lwjgl.dir" value="lwjgl-2.8.2" />

  <path id="classpath">
    <fileset dir="${lib.dir}" includes="jogg-0.0.7.jar,slick.jar,jorbis-0.0.17.jar" />
    <fileset dir="${lib.dir}/${lwjgl.dir}/jar/" includes="lwjgl.jar,lwjgl_util.jar" />
  </path>

  <target name="clean">
    <delete dir="${build.dir}" />
  </target>

  <target name="compile" depends="clean">
    <mkdir dir="${classes.dir}" />
    <javac srcdir="${src.dir}" destdir="${classes.dir}" classpathref="classpath" verbose="true" />
  </target>

  <target name="jar" depends="compile">
    <mkdir dir="${jar.dir}" />
    <jar basedir="${classes.dir}" destfile="${jar.dir}/${ant.project.name}.jar" />
  </target>

  <target name="run-macosx" depends="jar">
    <java fork="true" classname="${classname}">
      <classpath>
        <path refid="classpath"/>
        <path location="${jar.dir}/${ant.project.name}.jar"/>
      </classpath>
      <sysproperty key="java.library.path" value="${lib.dir}/${lwjgl.dir}/native/macosx" />
    </java>
  </target>
  
  <target name="run-windows" depends="jar">
    <java fork="true" classname="${classname}">
      <classpath>
        <path refid="classpath"/>
        <path location="${jar.dir}/${ant.project.name}.jar"/>
      </classpath>
      <sysproperty key="java.library.path" value="${lib.dir}/${lwjgl.dir}/native/windows" />
    </java>
  </target>
  
  <target name="run-linux" depends="jar">
    <java fork="true" classname="${classname}">
      <classpath>
        <path refid="classpath"/>
        <path location="${jar.dir}/${ant.project.name}.jar"/>
      </classpath>
      <sysproperty key="java.library.path" value="${lib.dir}/${lwjgl.dir}/native/linux" />
    </java>
  </target>
</project>