Introduced different node type to measure the rate of distance change.
And moving to abandonedobject node modification.
yet, the continuing distance increase cannot be measured. have to see results.
	modified:   NoobaVSSAD.pro
	modified:   NoobaVSSAD.pro.user
	new file:   abandonedobjectnode.cpp
	new file:   abandonedobjectnode.h
	new file:   distancechange.cpp
	new file:   distancechange.h
	modified:   noobavssad.cpp
	modified:   noobavssad.h