function samp_create_sync_data(sync_type, copy_from_player)
local ffi = require 'ffi'
local sampfuncs = require 'sampfuncs'
-- from SAMP.Lua
local raknet = require 'samp.raknet'
require 'samp.synchronization'
copy_from_player = copy_from_player or true
local sync_traits = {
player = {'PlayerSyncData', raknet.PACKET.PLAYER_SYNC, sampStorePlayerOnfootData},
vehicle = {'VehicleSyncData', raknet.PACKET.VEHICLE_SYNC, sampStorePlayerIncarData},
passenger = {'PassengerSyncData', raknet.PACKET.PASSENGER_SYNC, sampStorePlayerPassengerData},
aim = {'AimSyncData', raknet.PACKET.AIM_SYNC, sampStorePlayerAimData},
trailer = {'TrailerSyncData', raknet.PACKET.TRAILER_SYNC, sampStorePlayerTrailerData},
unoccupied = {'UnoccupiedSyncData', raknet.PACKET.UNOCCUPIED_SYNC, nil},
bullet = {'BulletSyncData', raknet.PACKET.BULLET_SYNC, nil},
spectator = {'SpectatorSyncData', raknet.PACKET.SPECTATOR_SYNC, nil}