- XNA 4.0 Game Development by Example Beginner's Guide（Visual Basic Edition）
- Kurt Jaegers
- 181字
- 2021-08-20 15:50:40
Time for action – water in the pipes
- Add a method to the
GameBoardclass to clear the water marker from all pieces:Public Sub ResetWater() Dim x, y As Integer For x = 0 To GameBoardWidth For y = 0 To GameBoardHeight boardSquares(x, y).RemoveSufix("W") Next Next End Sub - Add a method to the
GameBoardclass to fill an individual piece with water:Public Sub FillPiece(x As Integer, y As Integer) boardSquares(x, y).AddSuffix("W") End Sub
What just happened?
The ResetWater() method simply loops through each item in the boardSquares array and removes the W suffix from the GamePiece. Similarly, to fill a piece with water, the FillPiece() method adds the W suffix to the GamePiece. Recall that by having a W suffix, the GetSourceRect() method of GamePiece shifts the source rectangle one tile to the right on the sprite sheet, returning the image for a pipe filled with water, instead of an empty pipe.