public override void Build()
{
ConnectedAreas = new List <uint>()
{
0
};
for (uint col = 2; col < Width - 2; col += 2)
{
for (uint row = 1; row < Height - 1; row++)
{
Cells[row * Width + col].Type = CellType.Wall;
}
}
for (uint row = 2; row < Height - 2; row += 2)
{
for (uint col = 1; col < Width - 1; col++)
{
Cells[row * Width + col].Type = CellType.Wall;
}
}
for (uint i = 0; i < Cells.Length; i++)
{
if (Cells[i].Type == CellType.Lane)
{
Cells[i].ToStart = i;
}
}
Cells[1].Type = CellType.Lane;
Cells[1].ToStart = 0;
Cells[Height * Width - 2].Type = CellType.Lane;
List <Cell> unconnectedList = Cells.Where(x => ConnectedAreas.Contains(x.ToStart) && x.Type == CellType.Lane && CheckBoundry(x)).ToList();
Direction dir;
while (unconnectedList.Count > 0)
{
foreach (Cell cell in unconnectedList)
{
//if (Cells[cell.Y * Width + cell.X].ToStart > 0)
{
dir = (Direction)Rnd.Next(0, 4);
Expand(cell, dir);
}
}
if (Fun_onExpand != null)
{
Fun_onExpand.Invoke();
}
unconnectedList = Cells.Where(x => ConnectedAreas.Contains(x.ToStart) && x.Type == CellType.Lane && CheckBoundry(x)).ToList();
}
}
private void Expand(uint[] seeds)
{
List <uint> nextSeeds = new List <uint>();
while (seeds.Length > 0)
{
nextSeeds.Clear();
foreach (uint idx in seeds)
{
uint[] candidates = Explore(idx);
if (candidates.Length > 0)
{
uint newIdx = candidates[Rnd.Next(0, candidates.Length)];
Cells[newIdx].Type = CellType.Wall;
nextSeeds.Add(newIdx);
}
}
if (Fun_onExpand != null)
{
Fun_onExpand.Invoke();
}
seeds = nextSeeds.Distinct().ToArray();
}
}