Spiny Retract

Light Detection:
Each spiny will have a top half and bottom half for detecting whether light is entering or leaving.


4 Animations for each Tile:

A - Extend Above
Triggered by: Lantern Light "exits" Top Half of the Spiny "last"


B - Extend Below
Triggered by:Lantern Light "exits" Bottom Half of the Spiny "last"


C - Retract Above
Triggered by: Lantern Light "enters" Top Half of the Spiny "first"


D - Retract Below
Triggered by:Lantern Light "enters" Bottom Half of the Spiny "first"

