The positions of horse does not get updated to a precise value

[naruyoko]

The positions of horse does not get updated to a precise value

[Naruyoko]

Does this explain the apparent oscillation of the velocities?

[Naruyoko]

Correction: the interval is 0.03125, although they don't seem to be always updated.
The code that seems to be responsible for this is inside net.minecraft.entity.EntityTrackerEntity#updatePlayerList(List<EntityPlayer>). In it, the positions are compressed into an int, where the unit is 1/32. The same thing happens to the rotations, where 360 degrees is mapped to 256 values.

[Naruyoko]

The game plan is to send the entity's position and rotation encoded in the binary representation of double and float if that entity is recursively ridden by the player by listening to onPostWorldTick.

[Naruyoko]

The "same" entity on the client and server side does not share their ids... Here are the possible ways:

1. Instead of trying to send unconnected packets of data, send the position of the entity in the tower of riders. Cheaty and possibly unreliable?
2. Figure out how client-side entities are synchronized with the server-side counterpart. This seems okay, but is it really necessary?

[Naruyoko]

I found a way to go with option 2. It turns out the id by getEntityId is the same among the sides. So I can simply keep track of that.

[Naruyoko]

Done! 8f1185b