public void OnNewWatcher(Watcher watcher)
{
if (friends.Contains(watcher))
{
return;
}
if (friends.Count == 0)
{
friends.Add(watcher);
}
else if (friends.Count == 1)
{
double distance = Distance(watcher);
if (distance < Distance(friends[0]))
{
friends.Add(watcher);
friends[1] = friends[0];
friends[0] = watcher;
}
else
{
friends.Add(watcher);
}
}
else
{
double distance1 = Distance(friends[0]);
double distance2 = Distance(friends[1]);
double distance = Distance(watcher);
if (distance > distance2)
{
return;
}
if (distance < distance2 && distance > distance1)
{
friends[1] = watcher;
}
else
{
friends[1] = friends[0];
friends[0] = watcher;
}
}
}
private double Distance(Watcher watcher)
{
return(Math.Round(Math.Sqrt(Math.Pow((x - watcher.x), 2) + Math.Pow((y - watcher.y), 2)), 7));
}