Fix Squiggly line inconsistency.

The squiggly line was skipping around a bit. This was previously
hidden by the squiggly ball. I took the opportunity to reverse
the line direction so it doesn't move relative to the player
position.

Fixes: 246776610
Test: Manually checked squiggle on device
Change-Id: If9e8bd5bf68214c0d56b4995796c39291512733c