Find distance and direction to enemy in a HEX-grid
* if your absolute directions is "N"
Input:...three arguments, your corrent coordinates, your current absolute direction, enemy's coordinates.
list, relative direction to the enemy and distance to the enemy .
War-game design using hex-grid
'A1' ≤ coordinates ≤ 'Z9'.
direction in ('N', 'NE', 'SE', 'S', 'SW', 'NW').
your coordinates ≠ enemy's coordinates.