Quite simple. If it moves, shoot it. SPACE = Fire LEFT - ARROWS - RIGHT 1 = Phaser; 2 = Photon ; 3 = Thumper S = Shields (installed but not ready to use.)
UFO's now have shield strength. Small=5; Medium=3 and Large=2. Weapon shield damage points. Phaser=1; Photon=2; Thumper=5 Enemy can now shoot - sort of. Working on damage points. Currently working on: 1. Enemy firing routines... get ready to duck!! 2. Self destruct...
