#17 Touch Interface for Sokoban

[Arno Puder]

Add a touch interface for Sokoban. Touching a tile on the game board will make the man move in that direction. The man will either go as far as the user touched the board, or stop if there is an obstacle. If the man cannot reach the place where the user touched by either a straight vertical or horizontal line, the touch is ignored. If the user touches the man, accelerometer controls will be turned off. Touching outside of the game field will bring up the "Next Level" dialog.