Dectect if player is moving forward on server-side

I want to check if the player is actively moving forward on the server-side. On the client-side you can use EntityPlayer#moveForward but this will remain 0.0F on the server-side. Is there another easy way to check if the player moves forward that does not involve sending my own packets? If not I would just send my own packets but I don't want to do this unless it's necessary.

Edited February 28, 20178 yr by Necro