Field Name	Field Notes
Player Runtime ID	If server-bound, this is always the id of the sending player. If client-bound, the target player.
Position	The predicted world space position of the player after movement simulation this tick. The server authoritative equivalent of this is PlayerAuthInputPacket::mPos
Rotation	Rotation in degrees of the direction they should look, separate from their body orientation. The server authoritative equivalent of this is PlayerAuthInputPacket::mRot
Y-Head Rotation	Rotation in degrees of the head. Almost always matches Y rotation. The server authoritative equivalent of this is PlayerAuthInputPacket::mYHeadRot
Position Mode	Determines how the client will behave when receiving this, see the enum for details. When sent to the server this is always 'Normal' except when in a vehicle then it's 'OnlyHeadRot'.
On Ground	For client bound packets this should have little meaning as it will be reset by the client every frame. For server bound it is true if the player is currently touching the ground. This is indicated by physics trying to move the player down and being stopped by collision. If the player falls freely or moves up it is cleared. If the player isn't affected by gravity this will stay at whatever value it had. The server authoritative near-equivalent of this is PlayerAuthInputPacket::InputData::VerticalCollision
Riding Runtime ID	If client bound this has no meaning. If server bound it is the vehicle the client is riding as specified by the last SetActorLinkPacket from the server. The server authoritative near-equivalent is PlayerAuthInputPacket::mClientPredictedVehicle
Teleportation Cause	Always zero if server bound.
Source Actor Type	Always zero if server bound.
Tick	If this packet is referring to the player or a client predicted vehicle they are in control of, this should be the most recently processed PlayerInputTick from their PlayerAuthInputPacket. Otherwise zero.