class gal_formation

The gal_formation class derived from formation class.

The difference between formation object and a gal_formation object that the later has added the following:

gal_formation has the element of attack, thus formation members leave the formation and charge down on attack.
This is done by creating a gal_attack instance that takes control of the attacking items.


When attack is done, the control is back to the gal_formation and the gal_attack object is disposed.

Handling all logic is done in gal_formation::action() method.