Time for action – GamePiece class methods – part 4 – GetSourceRect

1. Add the GetSourceRect() method to the GamePiece class:

   Public Function GetSourceRectangle() As Rectangle
     Dim x As Integer = textureOffsetX
     Dim y As Integer = textureOffsetY
   
     If _pieceSuffix.Contains("W") Then
       x += PieceWidth + texturePaddingX
     End If
   
     y += (Array.IndexOf(PieceTypes, _pieceType) *(PieceHeight + texturePaddingY))
   
     Return New Rectangle(x, y, PieceWidth, PieceHeight)
   End Function

What just happened?

Initially, the x and y variables are set to the textureOffsets that are listed in the GamePiece class declaration. This means they will both start with a value of 1.

Because the sprite sheet is organized with a single type of pipe on each row, the x coordinate of the rectangle is the easiest to determine. If the _pieceSuffix variable does not contain a W (signifying that the piece is filled with water), the x coordinate will simply remain 1.

If _pieceSuffix does contain the letter W (indicating the pipe...