protected override void ExecuteCommand(IMap map, DungeonParameters parameters)
{
var sparseFactor = parameters.CellSparseFactor;
var expectedNumberOfRemovedCells =
(int)Math.Ceiling(map.Size * (sparseFactor / 100m)) - 1;
var removedCellsCount = 0;
var nonWalls = map.Where(c => !c.IsWall).ToList();
if (!nonWalls.Any())
{
throw new InvalidOperationException("All cells are walls.");
}
while (removedCellsCount < expectedNumberOfRemovedCells)
{
foreach (var cell in nonWalls.Where(c => c.IsDeadEnd).ToList())
{
if (!cell.IsDeadEnd)
continue;
var emptySide = cell.Sides
.Single(s => s.Value != Side.Wall)
.Key;
map.CreateWall(cell, emptySide);
cell.IsCorridor = false;
nonWalls.Remove(cell);
removedCellsCount++;
}
}
}