//Based on David Faitelson's original model for a 3*3 pacman board. I wanted to implement the model for any n*m board
//Note that the positions of walls and food are not very imaginatively chosen, and may be changed as long they don't
//share a position. Also note that you need to make sure that the BitWidth is set such that 2^(BitWidth-1) is > n*m, i.e. that the area of the
//board is within the range of the positive integers. Otherwise the position ordering gets messed up. A final note: My
//positions are column (x) by row(y), just like the standard Cartesian plane so the wall and food setup would look
//like this (capital fs are just there to make the columns align):

//x x x x x
//x x x x x
//f F f w x
//f F f w x
//f F f w x