I want to learn how to complete the following program. One entity (entity 1) is moving along X axis. On it, there is another entity (entity 2) that is moving on the first entity. Is there any function to handle this?

To note that the second entity is not always on the first entity, so I don't want to use bones ( If I am wrong please correct me - I am a beginner)

Here is a picture to better depict the idea.

The program itself isn't that hard really, it is just how you want to use that would suggest how to implant this. Give me a bit more info on why you want to do this and I can tell you a good way to get this to work.

I am newbie, As an exercise I am trying to develop a game in which the player ( entity 1) must move on several boxes ( entity 2) to reach a point. ( without falling of the boxes). Let's say the boxes are in water or something. The boxes are moving ( for the first try, are moving along one axis).

My problem is how to handle the player movement. I know how to move an entity. But I need to know how should I move the player on the box, though the box is moving in the some time.

I just need some tips to do this. I mention that the "biggest" program in lite-c is 2 pages long.

FoxHund, If you need more info just let me know.

This one should be pretty easy, move each of these normally, using C_move or whatever, and basically check and see if the player connects with the water. A cheap way of doing that would be to see if his Z dropped to low.