PicoRover to the Moon

PicoRover to the Moon win32 sources released on google code.

public class MissionSimulation 
    extends Simulation
{

    Earth earth;
    Moon moon;
    Spacecraft sc;
    ThreeBody b3;

    MissionSimulation(File dat){
        super(dat);
    }

    public void init(){
        this.earth = new Earth();
        this.moon = new Moon();
        this.sc = new Spacecraft();
        this.b3 = new ThreeBody(earth,moon,sc);
        this.b3.setTime(this.getSimulationTime());
        this.sc.setVector(this.getSimulationScStateVector());
    }
    public void step(long time, long dt){
        this.b3.updateTime(dt);
    }
    public void display(GL gl){
        this.pov(gl);
        if (this.earth.inPov(this))
            this.earth.display(gl);
        if (this.moon.inPov(this))
            this.moon.display(g);
        if (this.sc.inPov(this))
            this.sc.display(g);
    }
}