Minor AI eye bugs

[parf]

• The eye gets affected by anything that pulls physical objects with gravitational force.
  
• It is possible to hit the eye with a projectile from the laser gun. It does not really do anything and I am not sure as how to reproduce the event, but I was hit by a laser when I stood on the tile, or the pixel, the shooter was aiming at. This could become a problem, albeit a minor one, if the eye entity is coded in a way so that it gets hit first rather than whatever is underneath it