Bug Fix: Fixed score and hitboxes

This is a fairly small update leading up to the full release later today. The score counter now works, and counts up whenever you shoot your blood through a ring.

Previously, the rings would despawn and respawn whenever the blood intersected with *any* hitbox,  meaning you could move it across link repeadetly and effectively get infinite score. That's now been fixed, and the game is almost finished.

The final release will include the addition of a 30 second timer, and a fully fledged main menu.