public void RandomFill(int seed, Difficulty diff)
{
if (Populated)
{
tiles = new PrimaryTile[10, 10];
}
Random r = new Random(seed);
CoordSet filled;
int i = 0;
switch (diff)
{
case Difficulty.Easy:
while (i < 5)
{
Ship s = Ship.CreateRandom(r, ClassicShipLengths[i]);
if (TryAddShip(s))
{
i++;
}
}
break;
case Difficulty.Medium:
filled = new CoordSet();
while (i < 5)
{
Ship s = Ship.CreateRandom(r, ClassicShipLengths[i]);
if (filled.Overlaps(s.GetOccupiedArea(0)))
{
continue;
}
filled.Add(s.GetOccupiedArea(1));
TryAddShip(s);
i++;
}
break;
case Difficulty.Hard:
filled = new CoordSet();
var border = new CoordSet();
for (int j = 0; j < 10; j++)
{
border.Add(new CoordPair(0, j));
border.Add(new CoordPair(j, 0));
border.Add(new CoordPair(9, j));
border.Add(new CoordPair(j, 9));
}
while (i < 5)
{
Ship s = Ship.CreateRandom(r, ClassicShipLengths[i]);
var shipArea = s.GetOccupiedArea(0);
if (shipArea.Overlaps(filled))
{
continue;
}
var weakArea = new CoordSet(border);
weakArea.IntersectWith(shipArea);
if (r.NextDouble() < weakArea.Count * 0.4)
{
continue;
}
border.Add(s.GetOccupiedArea(1));
filled.Add(shipArea);
TryAddShip(s);
i++;
}
break;
}
Populated = true;
BoardChanged?.Invoke(this, new EventArgs());
}