// Distance of two planets
public double Distance(SilverlightControlPlanet planet)
{
double x1 = (double)this.GetValue(Canvas.LeftProperty);
double y1 = (double)this.GetValue(Canvas.TopProperty);
double x2 = (double)planet.GetValue(Canvas.LeftProperty);
double y2 = (double)planet.GetValue(Canvas.TopProperty);
return(PlanetMath.Distance(x1, y1, x2, y2));
}
public void Update()
{
xk += px;
yk += py;
this.SetValue(Canvas.LeftProperty, xk);
this.SetValue(Canvas.TopProperty, yk);
if (PlanetMath.Distance(xk, yk, destx, desty) < 5.0)
{
IsActive = false;
Visibility = Visibility.Collapsed;
Landing();
}
}
public void SetPlanets(SilverlightControlPlanet startplanet, SilverlightControlPlanet destplanet)
{
start = startplanet;
destination = destplanet;
double startx = (double)start.GetValue(Canvas.LeftProperty) + start.Width / 2.0 - this.Width / 2.0;
double starty = (double)start.GetValue(Canvas.TopProperty) + start.Height / 2.0 - this.Height / 2.0;
destx = (double)destination.GetValue(Canvas.LeftProperty) + destination.Width / 2.0 - this.Width / 2.0;
desty = (double)destination.GetValue(Canvas.TopProperty) + destination.Height / 2.0 - this.Width / 2.0;
xk = startx;
yk = starty;
double dx = destx - startx;
double dy = desty - starty;
double d = PlanetMath.Length(dx, dy);
px = Speed * (dx / d);
py = Speed * (dy / d);
owner = start.Owner;
if (owner == PlanetOwner.Player)
{
ImageFleet.Source = ship_player;
}
else
{
ImageFleet.Source = ship_enemy;
}
FleetRotate.Angle = PlanetMath.RotationAngle(startx, starty, destx, desty);
IsActive = true;
}