New bomb/mine mechanics

[olofson]

The bombs are already animated as rotating in Kobo Deluxe. The next natural step would be to replace the cross shaped trigger zones, and use directional detectors to detonate the bombs as they "see" the player. It would also be logical that these detectors can't see through other enemies.

Effects of this:

• Player can avoid detonating bombs by circling around them, avoiding the detector "beam."
• Player can hide between enemy ships to avoid detonating bombs.