John, the way round this is to use pivots as your children then positionentity your colliding children to the pivot locations entityx(childpivot,true),entityy(childpivot,true),entityz(childpivot,true)
There has been talk in the past about being able to make one super entity from a bunch of children and treat the collisions as one, this way you could get a cube (for example) and stick a pivot on each corner so you'd know which corner hits the ground. As it currently stands the corner child will move, so you've got to manually keep track of where they are to see what's hit.
Bit of a pain in the arse but there it is.
There has been talk in the past about being able to make one super entity from a bunch of children and treat the collisions as one, this way you could get a cube (for example) and stick a pivot on each corner so you'd know which corner hits the ground. As it currently stands the corner child will move, so you've got to manually keep track of where they are to see what's hit.
Bit of a pain in the arse but there it is.