Time for action – making the connection

1. Add the PropagateWater() method to the GameBoard class:

   Public Sub PropagateWater(x As Integer, y As Integer, fromDirection As String)
   
     If (y >= 0) And (y <= GameBoardHeight) And
       (x >= 0) And (x <= GameBoardWidth) Then
       If boardSquares(x, y).HasConnector(fromDirection) And
         Not (boardSquares(x, y).PieceSuffix.Contains("W")) Then
         FillPiece(x, y)
         waterTracker.Add(New Vector2(x, y))
         For Each pipeEnd As String In 
           boardSquares(x, y).GetOtherEnds(fromDirection)
           Select Case pipeEnd
             Case "Left"
               PropagateWater(x - 1, y, "Right")
             Case "Right"
               PropagateWater(x + 1, y, "Left")
             Case "Top"
               PropagateWater(x, y - 1, "Bottom")
             Case "Bottom"
               PropagateWater(x, y + 1, "Top")
           End Select
         Next
       End If
     End If
   End Sub

2. Add the GetWaterChain() method to the GameBoard class:

   Public Function GetWaterChain(y As Integer...