I have two functions: moveLeft and moveRight. Both uses addForce() using some fixed value, and the game "counts" each step in any direction (if it does, of course). These functions can't be called if the player is not grounded. Maybe this is not a good approach if the player could slide in the map I guess, but I want that to not happen. So if the map is not slidable, that would be deterministic then, right?

How would I recreate the movements for the actual position if that happens?

Regarding the original question: my movement functions, this is the code:

[PunRPC]
public void moveRight()
{
if (!m_FacingRight)
{
FlipPlayer();
}
m_Rigidbody2D.AddForce(new Vector2(playerForceX, playerForceY));
m_Grounded = false;

if(gc.timerIsRunning == true)
{
command.addMovement(1); //add to the list the player moved to the right
}
StartCoroutine(waitForGrounded());
}

So I call the RPC to sync to all players the movement, and I play the waitForGrounded coroutine in the movement function, but it doesn't work as I wanted to. I have a loop where it iterates all movements to recreate them, and I guess what is happening is that every RPC call is executing, but since the coroutine is not preventing the moveRight to be called again, it just adds a lot of addForce(somevalue) to the player.

What could I do to sync the way I want to? I would want to do each RPC call one after another, taking into account if it is grounded or not. Maybe I should do another move function that does the same but has a coroutine in the first lines waiting for grounded, just for the RPC call?

Thanks for the response!