binary and condition for gameunit
	modified:   assets/sprites/vessel0.dspr
	new file:   assets/sprites/vessel0/down0.png
	modified:   stigame/GameUnit.cpp
	modified:   stigame/GameUnit.h
	modified:   stigame/SRect.h
	modified:   stiuniverse/MainState.cpp
	modified:   stiuniverse/SpaceVessel.cpp