private Position getRandomWallPositionInRange(Maze maze, Position minCorner, Position maxCorner)
{
int area = Position.Area(minCorner, maxCorner);
int loopCount = 0;
Position randomPosition = null;
while (loopCount++ < area &&
(randomPosition == null ||
maze.MazePieceFromPosition(randomPosition) != MazePiece.Wall)) {
randomPosition = Position.RandomPositionInRange(minCorner, maxCorner);
}
return maze.MazePieceFromPosition(randomPosition) == MazePiece.Wall?randomPosition:null;
}