/// <summary>
/// this method checks if the ship is going out of the universe.
/// </summary>
/// <param name="s"></param>
private static void shipsPosition(Ship s)
{
//if ships x is greater than universize by 2.
if (s.getShipLoc().GetX() > (UniverseSize / 2))
{
//set ship to the opposite location.
s.setShipLoc(new Vector2D((-UniverseSize / 2), (s.getShipLoc().GetY())));
}
//if ships y os greter than universesize by two
if (s.getShipLoc().GetY() > (UniverseSize / 2))
{
//set ship to the opposite location.
s.setShipLoc(new Vector2D((s.getShipLoc().GetX()), (-(UniverseSize / 2))));
}
//if ships x is less than universize by 2.
if (s.getShipLoc().GetX() < -(UniverseSize / 2))
{
//set ship to the opposite location.
s.setShipLoc(new Vector2D(((UniverseSize / 2)), s.getShipLoc().GetY()));
}
//if ships y os less than universesize by two
if (s.getShipLoc().GetY() < -(UniverseSize / 2))
{
//set ship to the opposite location.
s.setShipLoc(new Vector2D((s.getShipLoc().GetX()), (UniverseSize / 2)));
}
}
/// <summary>
/// This method is used to move ship/
/// </summary>
/// <param name="s"></param>
private static void moveShip(Ship s)
{
//calls the method shipFuntion from world class.
s.shipFunctions();
//sets gravity to 0,0.
Vector2D g = new Vector2D(0, 0);
//calculate g.
g = star.getStarLoc() - s.getShipLoc();
g.Normalize();
//gets the mass of the star from xml file.
g = g * star.getStarMass();
Vector2D a = new Vector2D(0, 0);
//the ship is thrusting.
if (s.getShipThrust())
{
Vector2D t = new Vector2D(s.getShipDir());
//calculate the thrust and apply to gravity.
t = t * 0.08;
a = g + t;
}
else
{
//else acceleration is equal to gravity.
a = g;
}
//set thr ships velocity and location.
s.setShipVelocity(s.getShipVelocity() + a);
s.setShipLoc(s.getShipLoc() + s.getShipVelocity());
}
