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);
}
public void Update()
{
// on each update (each second) positions of stars are recalculated based on their velocity
foreach (Star star in Stars)
{
star.Position = new Values((star.Position.x + star.Velocity.x), (star.Position.y + star.Velocity.y));
}
// on each update (each second) maximal distances of X and Y are recalculated by current positions of stars
DistanceX = Stars.Max(s => s.Position.x) - Stars.Min(s => s.Position.x); // distance between min and max X position of stars
DistanceY = Stars.Max(s => s.Position.y) - Stars.Min(s => s.Position.y); // distance between min and max Y position of stars
}