private PuzzleOrb GetOrbWithIndex(Index2D index)
{
if (!IsValidBoardIndex(index))
{
return(null);
}
return(Board[index.y, index.x]);
}
public bool IsValidBoardIndex(Index2D index)
{
if (index.x < 0 || index.x >= Board.Columns)
{
return(false);
}
if (index.y < 0 || index.y >= Board.Rows)
{
return(false);
}
return(true);
}
public void SwapOrbPlaces(Index2D from, Index2D to)
{
if (!IsValidBoardIndex(from))
{
throw new System.Exception(message: "Invalid [from] board index " + from);
}
if (!IsValidBoardIndex(to))
{
throw new System.Exception(message: "Invalid [to] board index " + to);
}
PuzzleOrb fromOrb = Board[from.y, from.x];
PuzzleOrb toOrb = Board[to.y, to.x];
fromOrb.index = to;
toOrb.index = from;
Board[to.y, to.x] = fromOrb;
Board[from.y, from.x] = toOrb;
}
private MatchTypes GetMatchType(List <PuzzleOrb> matches)
{
int orbCount = matches.Count;
if (orbCount == 3)
{
return(MatchTypes.Three);
}
else if (orbCount == 4)
{
return(MatchTypes.Four);
}
else
{
List <Index2D> matchIndexes = new List <Index2D>();
for (int i = 0; i < matches.Count; i++)
{
matchIndexes.Add(matches[i].index);
}
if (orbCount == 5)
{
Index2D leftMostIndex = matchIndexes[0];
for (int i = 0; i < matchIndexes.Count; i++)
{
if (leftMostIndex.x > matchIndexes[i].x)
{
leftMostIndex = matchIndexes[i];
}
}
Index2D crossCenter = leftMostIndex.RightIndex;
Index2D[] arr = new Index2D[]
{
crossCenter,
crossCenter.RightIndex,
crossCenter.UpIndex,
crossCenter.DownIndex
};
bool hasIndexes = true;
for (int i = 0; i < arr.Length; i++)
{
if (!matchIndexes.Contains(arr[i]))
{
hasIndexes = false;
break;
}
}
if (hasIndexes)
{
return(MatchTypes.Cross);
}
}
if (orbCount == Board.Columns || orbCount == Board.Rows)
{
bool inSameRow = true;
bool inSameColumn = true;
int y = matchIndexes[0].y;
int x = matchIndexes[0].x;
for (int j = 1; j < matchIndexes.Count; j++)
{
if (matchIndexes[j].y != y)
{
inSameRow = false;
}
if (matchIndexes[j].x != x)
{
inSameColumn = false;
}
if (!inSameColumn && !inSameRow)
{
break;
}
}
if (orbCount == Board.Columns && inSameRow)
{
return(MatchTypes.Row);
}
else if (orbCount == Board.Rows && inSameColumn)
{
return(MatchTypes.Column);
}
else
{
return(MatchTypes.Linked);
}
}
else
{
return(MatchTypes.Linked);
}
}
}