private void BuildCorridors(IMap map)
{
if (map.Any(c => c.IsVisited))
{
throw new InvalidOperationException(
"Map should not contain visited cells.");
}
MapCell nextCell;
var direction = Dir.Zero;
var currentCell = map.PickRandomCell();
map.Visit(currentCell);
bool success;
do
{
_directionPicker.LastDirection = direction;
_directionPicker.ResetDirections();
success = TryPickRandomUnvisitedAdjacentCell(
map, currentCell, out nextCell, out direction);
if (success)
{
map.CreateCorridorSide(currentCell, nextCell, direction, Side.Empty);
map.Visit(nextCell);
currentCell = nextCell;
nextCell = null;
}
else
{
currentCell = map.PickNextRandomVisitedCell(currentCell);
}
}
while (!map.AllVisited);
}