Что мне ответили на answerhub :
Hi man , If i get , you want that the cube moves along the green arrows, in the Right part of the image.
Sure, its possible. First you have to Find the direction in wich you want to move. The green Arrow X. If you are working with an actor here is the Case A or Case B.
A) If your camera is at the same level, and Always looking to the cube : you can get his forward vector and his right vector., Then Set your cube location ( not the add location ) to , his location+ the vector right of the camera. You can also multiply the cameravector for a value like Speed to get a faster movement.
B) If you camera is not at the same level, and not Always look at the char.
You have to get the location of the camera, break his location, and make a new vector with cameraX,YandCubeZ. This way you get a location at the same high of your cube... then subtract their location , to get the direction that point from one to the other. Now you can rotate this vector . just search for the Rotate vector node , add 90° on the Z axis to get the . Perpendicular Arrow you want.
Be sure to rotate you cube!
На скрине что я сделал, и как это соединять не понимаю. По идее мне нужно блокировать одну ось и чтобы остальные 2 реагировали на поворот. как то так вроде.