/// <summary>
/// Adds a territory to the Planet
/// x and y are bound to between 0 and column(x)/Rows(y)
/// If location is taken, it returns false.
/// </summary>
/// <param name="x"/>
/// <param name="y"/>
/// <param name="terr">The territory to add.</param>
/// <param name="context">The context of the planet.</param>
public bool AddTerritoryToLocation(int x, int y, Territory terr, EconSimContext context)
{
// if the location is already taken, return false.
if (Territories.Any(t => t.X == x && t.Y == y && t.Z == HexZ(x, y)))
{
return(false);
}
// it's not taken, so add it.
terr.PlanetId = Id;
Territories.Add(terr);
context.Territories.AddOrUpdate(terr);
context.SaveChanges();
return(true);
}