how to change the relative position in mixed transform

Hi,everybody!
GameObject A has child B(0,0,0) ,C(1,0,0) and D(2,0,0), A's position meant to be around C's position. But I want A to be at (0,0,0), when I changed the child gameobject, A is changed automotically, it does not follow my wish.
How can I change A's relative position as my wish, mainly to child's relative position?

 

So you want to move C, and have A move with it?

It won't happen automatically, as children inherit and parent's don't. You can do it through code, ensuring that whenever C moves the parent moves, but be careful as when you move A, C will move too. You will get a ongoing loop. It might be easier if you want move C, just move a instead. Or just restructure your hierarchy to better reflect the use case.

 

thank you for your answering, maybe I didn't make my meaning clear.
see the following pic:


GameObject A has 3 children objects(B, C, D). A's position is now near C's position. I want A's position near B's position, as my wish. how can I do that?
the result I want is like this:

 

Do you mean during runtime or just in the editor? If in the editor, just grab all 3 children and move them till the are correct.

 

It's in the editor, I tried as grabbing all 3 children, but A's position is also changed.

 

It shouldn't. Do you have Pivot or Center selected in scene tools?

 

I don't understand your meaning, can you have a screenshot to help me? ( "Pivot or Center selected in scene tools" )

 

At the top of the scene window there are some control buttons. The one marked "Pivot" or "Center" controls where the control axis is. Pivot means the actual center of the transform. Center means the center based on the size of the object (including children).

 

thank you, You resolved my problem !