Calamari/space_invaders — pull request #2 by abahgat (2013-05-22 22:02:36+00:00)
Title: Fixed mothership visibility check

This updates the check to verify whether a mothership is visible.

The code now uses the width of the mothership bounding box to verify whether the enemy is visible and fixes a bug that prevented motherships from showing up if spawned on the left side of the screen.