I am still stuck on this and feel like I am making no progress by myself. I've been stuck at fiddling around with stuff but still cannot get rid of the jitter.

My previous topic is here.

I know that I need to find the difference in time between packets, from hplus's code here.

I am just so confused about the "previousState" and "nextState" states and their ".time" property.

For example I am using Godot and have this code to interpolate a player to a new position. Positional data is being sent 15 times a second, and received 15 times a second, on my local server.

var _velocity = Vector2(0,0)
var SPEED = 1000
func _process(delta):
	if new_pos.x:
		var my_pos = get_pos()
		var vector = new_pos - my_pos
		var length = floor(vector.length())
		var direction = vector.normalized()
		if length < 2: 
			if length < 0.5:
				_velocity = Vector2(0,0) # full stop.
			else:
				_velocity = vector * SPEED * delta
		else:
			_velocity = vector * SPEED * delta
			
			
func _integrate_forces(state):
	if new_pos.x:
		state.set_linear_velocity(_velocity)

So, the new_pos is the property that is being updated 15 times a second from the server.

The delta here is 0.0167. Game is running at 60 fps (1/60).

_process is being updated at that rate, 60 times a second.

My problem is, since I am only sending 15 positional packets per second to the server, that means I need to do some type of interpolation.

I could... instead of having that code in the _process method that runs at (60 times/s), have that code only run when the packets are received. Which would be essentially 15 times per second. But, if any lag would happen, would make the character jump all over the place because we're updating the linear_velocity.

Now, on to hplus` answer, I need to find the time difference between packets.

So I have a variable called "last_message_sent" and "last_message_received". If I am understanding this correctly, I now can get the difference (t) between packets and use that in my delta, right? To make it dynamic so that the jitter doesn't happen, but am unsure how to go about doing that. This is where my brain just gets stuck, thus this thread is created :X

e: I don't know where I went wrong..