Bouncy Path Guy

[slabrant]

The enemy that follows a path currently inverts its velocity on detecting an object in the direction it's heading.
We want a variety of the enemy that instead of inverting x and y, it only inverts the direction that is orthogonal to the collision surface.
This will allow the enemy to bounce around a bit less predictably. More preferred, it will allow it to zig-zag along a passage. This is why the enemy at the top of level-1 is at a weird angle in a narrow passage.

[slaker333]

3a7753daba9077c5df9dc37cdd6384dce0cd3180