[.. upper level ..]

enum VG_COLL_RETURNS

Collision return values. A return value may be set explicitly or added with VG_COLL_RETURN_ADDING().

VG_COLL_RETURN_CONTINUE	No collision: continue moving (Value: 0)
VG_COLL_RETURN_STOP_X	Collision detected: stop x-moving and continue with y-moving (Value: 1)
VG_COLL_RETURN_STOP_Y	Collision detected: stop y-moving and continue with x-moving (Value: 2)
VG_COLL_RETURN_STOP	Collision detected: stop moving and step one back (Value: 3)
VG_COLL_RETURN_DEAD	Collision detected: (destroy yourself and) return immediately (Value: 4)