protected override List <WinningTile> Process()
{
var output = new List <WinningTile>();
foreach (var possibleSet in PossibleSets)
{
var ordered = possibleSet.TilesLeft.OrderBy(q => q.Suit).ThenBy(q => q.Rank).ToList();
var meldCollection = new MeldCollection(null, ordered, possibleSet.Draw);
var tilesWithEyeOccurance =
meldCollection.TilesLeft.Distinct().Count(
q => meldCollection.TilesLeft.Count(p => p.Equals(q)) == 2);
var tilesWithKongOccurance =
meldCollection.TilesLeft.Distinct().Count(
q => meldCollection.TilesLeft.Count(p => p.Equals(q)) == 4);
if (tilesWithEyeOccurance + tilesWithKongOccurance * 2 == 7)
{
for (int i = 0; i < 7; i++)
{
var tile = meldCollection.TilesLeft[0];
meldCollection.CreateMeld(new Meld(new List <Tile>
{
tile,
tile
}, MeldType.Eye));
}
output.Add(new WinningTile(meldCollection, tilesWithKongOccurance == 0 ? Type : WinType.LongQiDui, tilesWithKongOccurance));
}
}
return(output);
}
protected List <MeldCollection> Join(List <MeldCollection> list1, List <MeldCollection> list2, Tile draw)
{
var output = new List <MeldCollection>();
if (list1.Any() || list2.Any())
{
if (!list1.Any())
{
return(list2.ToList());
}
if (!list2.Any())
{
return(list1.ToList());
}
foreach (var meldCollection in list1)
{
foreach (var collection in list2)
{
var mc = new MeldCollection(null, null, draw);
mc.Melds.AddRange(meldCollection.Melds);
mc.Melds.AddRange(collection.Melds);
output.Add(mc);
}
}
}
return(output);
}
protected IEnumerable <MeldCollection> GetMeldCollections(MeldCollection meldCollectionWithSameSuit)
{
var output = new List <MeldCollection>();
var count = meldCollectionWithSameSuit.TilesLeft.Count;
if (count % 3 == 0)
{
var possibleMeldCollections = GetTripletMeldCollections(meldCollectionWithSameSuit);
foreach (var possibleMeldCollection in possibleMeldCollections)
{
if (possibleMeldCollection.Successful)
{
output.Add(possibleMeldCollection);
}
else
{
var meldCollections = GetSequanceMeldCollections(possibleMeldCollection);
foreach (var meldCollection in meldCollections)
{
if (meldCollection.Successful)
{
output.Add(meldCollection);
}
}
}
}
}
else if (count % 3 == 2)
{
var possibleMeldCollections = GetEyeMeldCollections(meldCollectionWithSameSuit);
foreach (var possibleMeldCollection in possibleMeldCollections)
{
if (possibleMeldCollection.Successful)
{
output.Add(possibleMeldCollection);
}
else
{
var meldCollections = GetMeldCollections(possibleMeldCollection);
foreach (var meldCollection in meldCollections)
{
if (meldCollection.Successful)
{
output.Add(meldCollection);
}
}
}
}
}
return(output);
}
protected IEnumerable <MeldCollection> GetEyeMeldCollections(MeldCollection meldCollection)
{
var output = new List <MeldCollection>();
var tilesWithDoubleOccurance = meldCollection.TilesLeft.Where(q => meldCollection.TilesLeft.Count(p => p.Rank == q.Rank && p.Suit == q.Suit) >= 2).Distinct();
foreach (var tile in tilesWithDoubleOccurance)
{
var newMeldCollection = new MeldCollection(meldCollection.Melds.ToList(), meldCollection.TilesLeft.ToList(), meldCollection.Draw);
newMeldCollection.CreateMeld(new Meld(new List <Tile>
{
tile, tile
}, MeldType.Eye));
output.Add(newMeldCollection);
}
return(output);
}
protected IEnumerable <MeldCollection> GetTripletMeldCollections(MeldCollection meldCollection, IList <Tile> selectedTiles = null)
{
var output = new List <MeldCollection>();
if (selectedTiles == null)
{
var tilesWithTripletOccurance =
meldCollection.TilesLeft.Distinct().Where(
q => meldCollection.TilesLeft.Count(p => p.Equals(q)) >= 3)
.ToList();
var exceptionChildList = tilesWithTripletOccurance.GetChildSets();
foreach (var list in exceptionChildList)
{
output.AddRange(GetTripletMeldCollections(new MeldCollection(meldCollection.Melds.ToList(), meldCollection.TilesLeft.ToList(), meldCollection.Draw), list));
}
}
else
{
var newMeldCollection = new MeldCollection(meldCollection.Melds.ToList(),
meldCollection.TilesLeft.ToList(), meldCollection.Draw);
foreach (var tile in selectedTiles)
{
newMeldCollection.CreateMeld(new Meld(new List <Tile>
{
tile,
tile,
tile
}, MeldType.Triplet));
}
output.Add(newMeldCollection);
}
return(output);
}
protected IEnumerable <MeldCollection> GetSequanceMeldCollections(MeldCollection meldCollection)
{
var output = new List <MeldCollection>();
if (meldCollection.TilesLeft.Count == 0)
{
return(output);
}
if (meldCollection.TilesLeft.Count % 3 != 0)
{
throw new Exception("Cannot process sequance search");
}
var suit = meldCollection.TilesLeft.First().Suit;
if (meldCollection.TilesLeft.Count(q => q.Suit == suit) != meldCollection.TilesLeft.Count)
{
throw new Exception("Unmatched suit found");
}
if (meldCollection.TilesLeft.Count == 3)
{
var totalRank = meldCollection.TilesLeft.Sum(q => (int)q.Rank);
if (totalRank % 3 != 0)
{
return(output);
}
else
{
var midTileRank = totalRank / 3;
var midTile = meldCollection.TilesLeft.FirstOrDefault(q => q.Rank == (Rank)midTileRank);
var leftTile = meldCollection.TilesLeft.FirstOrDefault(q => q.Rank == (Rank)midTileRank - 1);
var rightTile = meldCollection.TilesLeft.FirstOrDefault(q => q.Rank == (Rank)midTileRank + 1);
if (midTile != null && leftTile != null && rightTile != null)
{
var newMeldCollection = new MeldCollection(meldCollection.Melds.ToList(),
meldCollection.TilesLeft.ToList(), meldCollection.Draw);
newMeldCollection.CreateMeld(new Meld(new List <Tile>
{
leftTile,
midTile,
rightTile
}, MeldType.Sequence));
output.Add(newMeldCollection);
}
}
}
else
{
var tilesLeft = meldCollection.TilesLeft.ToList();
var melds = meldCollection.Melds.ToList();
melds.AddRange(GetSequance(tilesLeft));
if (tilesLeft.Count == 0)
{
output.Add(new MeldCollection(melds, null, meldCollection.Draw));
}
}
return(output);
}
