class BoardUtils:
    def findOccupied(board):
        occupied = []
        for i in board:
            pos = i.getCoords()
            dims = i.dims
            for j in range(dims[0]):
                for k in range(dims[1]):
                    occupied.append([pos[0] + j, pos[1] + k])
        return occupied
    def surround(pos, radius=1):
        surrounding = []
        for i in range(-1 * radius, radius + 1, 1):
            for j in range(-1 * radius, radius + 1, 1):
                surrounding.append([pos[0] + i, pos[1] + j])

        return surrounding
    def tileAtPosition(board, pos):
        for i in board:
            lpos = i.getCoords()
            dims = i.dims
            if not dims:
                dims = [1, 1]
            for j in range(dims[0]):
                for k in range(dims[1]):
                    if [lpos[0] + j, lpos[1] + k] == pos:
                        return i
        return None