public MineField Next()
{
Level++;
return(MineField.Create(GetZoneSize(), Level));
int GetZoneSize()
{
var percent = (Level * 100) / (StartRatio + (Level / 3));
return((int)Math.Sqrt(percent));
}
}
public MineField Start()
{
Level = 1;
return(MineField.Create(StartZoneSize, Level));
}