Make FlyingBodySpawner's direction points to the Moon

[henriiquecampos]

In the previous iteration, the flying bodies just flight in a straight horizontal line, perpendicular to the FlyingBodySpawner's current vertical position, unless the player changed their route. I friend suggested that it could be a good thing to create a feeling of urgency by making the Comets and ShootingStars always aim the Moon by default.

So instead of this:

Have this:

This creates some interesting emerging gameplays:

• Player will have to actively decide to change the flying route both to
  • Make flying bodies collide with the Moon, creating new Craters that will decrease the increasing the player's survivability
  • Prevent collisions between flying bodies and the Moon, and potentially the Astromouse as well, increasing the player's survivability
• Actions per minute may increase significantly

Cons:

• Screen may not have enough room and can potentially cause frustration due to claustrophobic gameplay. Mitigation: decrease Moon and related elements. Consequence: more negative space to fill.
• Player will now have to manage asynchronous playstyle and each failed management will pile up to inevitable lost. Mitigation: decrease apm by increasing the spawning interval. Consequence: potential increase in boredom due to apm drop.

[henriiquecampos]

Closing this for now until I get some player's feedback