public List <string> GenerateView()
{
int MinX = Stars.Min(s => s.Position.x);
int MaxX = Stars.Max(s => s.Position.x);
int MinY = Stars.Min(s => s.Position.y);
int MaxY = Stars.Max(s => s.Position.y);
List <string> rows = new List <string>();
// it is enough to draw only that part of the sky where there are currently stars
for (int y = MinY; y < MaxY + 1; y++)
{
string row = "";
for (int x = MinX; x < MaxX + 1; x++)
{
// if any star has the current position, it's expressed by 'X'
if (Stars.Any(pos => pos.Position.x == x && pos.Position.y == y))
{
row += "X";
}
else
{
row += " ";
}
}
rows.Add(row);
}
return(rows);
}