private static void Postfix()
{
if (MPClientExtrapolation.bodies_to_resolve.Count == 0 /* && MPClientExtrapolation.players_to_resolve.Count == 0 */)
{
return;
}
var amount = MPClientExtrapolation.GetWeaponExtrapolationTime();
if (amount <= 0f)
{
return;
}
//foreach (var kvp in MPClientExtrapolation.players_to_resolve) {
// var player = kvp.Key;
// var velocities = kvp.Value;
// player.c_player_ship.c_transform.localPosition = velocities.LocalPosition;
// player.c_player_ship.c_transform.rotation = velocities.Rotation;
// player.c_player_ship.c_mesh_collider_trans.localPosition = player.c_player_ship.c_transform.localPosition;
//}
NetworkSim.PauseAllRigidBodiesExcept(null);
foreach (var body in MPClientExtrapolation.bodies_to_resolve)
{
if (NetworkSim.m_paused_rigid_bodies.ContainsKey(body))
{
var state = NetworkSim.m_paused_rigid_bodies[body];
body.isKinematic = false;
body.velocity = state.m_velocity;
body.angularVelocity = state.m_angular_velocity;
}
}
//foreach (var kvp in MPClientExtrapolation.players_to_resolve) {
// var player = kvp.Key;
// var velocities = kvp.Value;
// player.c_player_ship.c_rigidbody.isKinematic = false;
// player.c_player_ship.c_rigidbody.velocity = velocities.Velocity;
// player.c_player_ship.c_rigidbody.angularVelocity = velocities.AngularVelocity;
// player.c_player_ship.c_rigidbody.drag = 0f;
//}
Physics.Simulate(amount);
//foreach (var kvp in MPClientExtrapolation.players_to_resolve) {
// var player = kvp.Key;
// var velocities = kvp.Value;
// player.c_player_ship.c_rigidbody.isKinematic = false;
// player.c_player_ship.c_rigidbody.velocity = Vector3.zero;
// player.c_player_ship.c_rigidbody.angularVelocity = Vector3.zero;
// player.c_player_ship.c_rigidbody.drag = velocities.Drag;
//}
NetworkSim.ResumeAllPausedRigidBodies();
MPClientExtrapolation.bodies_to_resolve.Clear();
//MPClientExtrapolation.players_to_resolve.Clear();
}
private static void Postfix()
{
MPClientExtrapolation.InitForMatch();
}
// Called per frame, moves ships along their interpolation/extrapolation motions
public static void updatePlayerPositions()
{
float now = Time.time; // needs to be the same time source we use for m_last_update_time
NewPlayerSnapshotToClientMessage msgA = null; // interpolation: start
NewPlayerSnapshotToClientMessage msgB = null; // interpolation: end, extrapolation start
float interpolate_factor = 0.0f; // interpolation: factor in [0,1]
float delta_t = 0.0f;
int interpolate_ticks = 0;
bool do_interpolation = false;
// find out which case we have, and get the relevant snapshot message(s)
lock (m_last_messages_lock) {
/*
* for (int xxx=0; xxx<m_last_messages_ring_count; xxx++) {
* Debug.LogFormat("having snapshot from {0} represents {1}", m_last_messages_ring[(m_last_messages_ring_pos_last + 4 - xxx)&3].m_timestamp, m_last_update_time - xxx* Time.fixedDeltaTime);
* }
*/
if (m_last_messages_ring_count < 1)
{
// we do not have any snapshot messages...
return;
}
// make sure m_last_update_time is up-to-date
ResyncTime();
// NOTE: now and m_last_update_time indirectly have timeScale already applied, as they are based on Time.time
// we need to adjust just the ping and the mms_ship_max_interpolate_frames offset...
// Also note that the server still sends the unscaled velocities.
delta_t = now + Time.timeScale * MPClientExtrapolation.GetShipExtrapolationTime() - m_last_update_time;
// if we want interpolation, add this as a _negative_ offset
// we use delta_t=0 as the base for from which we extrapolate into the future
delta_t -= (Menus.mms_lag_compensation_ship_added_lag / 1000f) * Time.timeScale;
// it might sound absurd, but after this point, the Time.fixedDeltaTime is correct
// and MUST NOT be scaled by timeScale. The data packets do contain 16.67ms of
// movement each, we already have taken the time dilation into account above...
// time difference in physics ticks
float delta_ticks = delta_t / Time.fixedDeltaTime;
// the number of frames we need to interpolate into
// <= 0 means no interpolation at all,
// 1 would mean we use the second most recent and the most recent snapshot, and so on...
interpolate_ticks = -(int)Mathf.Floor(delta_ticks);
// do we need to do interpolation?
do_interpolation = (interpolate_ticks > 0);
if (do_interpolation)
{
// we need interpolate_ticks + 1 elements in the ring buffer
// NOTE: in the code below, the index [(m_last_messages_ring_pos_last + 4 - i) &3]
// effectively acceses the i-ith most recent element (i starting by 0)
// since 4-(i-1) == 4-i+ 1 = 5-i, 5-i references the next older one
if (interpolate_ticks < m_last_messages_ring_count)
{
msgA = m_last_messages_ring[(m_last_messages_ring_pos_last + 4 - interpolate_ticks) & 3];
msgB = m_last_messages_ring[(m_last_messages_ring_pos_last + 5 - interpolate_ticks) & 3];
interpolate_factor = delta_ticks - Mathf.Floor(delta_ticks);
}
else
{
// not enough packets received so far
// "extrapolate" into the past
do_interpolation = false;
// get the oldest snapshot we have
msgB = m_last_messages_ring[(m_last_messages_ring_pos_last + 5 - m_last_messages_ring_count) & 3];
// offset the time for the extrapolation
// delta_t is currently relative to the most recent element we have,
// but we need it relative to msgA
delta_t += Time.fixedDeltaTime * (m_last_messages_ring_count - 1);
}
}
else
{
// extrapolation case
// use the most recently received snapshot
msgB = m_last_messages_ring[m_last_messages_ring_pos_last];
}
} // lock
m_last_frame_time = now;
/*
* Debug.LogFormat("At: {0} Setting: {1} IntFrames: {2}, dt: {3}, IntFact {4}",now,Menus.mms_ship_max_interpolate_frames, interpolate_ticks, delta_t, interpolate_factor);
* if (interpolate_ticks > 0) {
* Debug.LogFormat("Using A from {0}", msgA.m_timestamp);
* Debug.LogFormat("Using B from {0}", msgB.m_timestamp);
* } else {
* Debug.LogFormat("Using B from {0}", msgB.m_timestamp);
* }
*/
// keep statistics
m_compensation_sum += delta_t;
m_compensation_count++;
// NOTE: one can't replace(interpolate_ticks > 0) by do_interpolation here,
// because even in the (interpolate_ticks > 0) case the code above could
// have reset do_interpolation to false because we technically want
// the "extrapolation" into the past thing, but we don't want to count that
// as extrapolation...
m_compensation_interpol_count += (interpolate_ticks > 0)?1:0;
if (Time.time >= m_compensation_last + 5.0 && m_compensation_count > 0)
{
// Debug.LogFormat("ship lag compensation over last {0} frames: {1}ms / {2} physics ticks, {3} interpolation ({4}%) packets: {5} received / {6} missing / {7} old ignored",
// m_compensation_count, 1000.0f* (m_compensation_sum/ m_compensation_count),
// (m_compensation_sum/m_compensation_count)/Time.fixedDeltaTime,
// m_compensation_interpol_count,
// 100.0f*((float)m_compensation_interpol_count/(float)m_compensation_count),
// m_received_packets_count, m_missing_packets_count, m_ignored_packets_count);
m_compensation_sum = 0.0f;
m_compensation_count = 0;
m_compensation_interpol_count = 0;
m_received_packets_count = 0;
m_missing_packets_count = 0;
m_ignored_packets_count = 0;
m_compensation_last = Time.time;
}
// actually apply the operation to each player
foreach (Player player in Overload.NetworkManager.m_Players)
{
if (player != null && !player.isLocalPlayer && !player.m_spectator)
{
// do the actual interpolation or extrapolation, as calculated above
if (do_interpolation)
{
NewPlayerSnapshot A = GetPlayerSnapshot(msgA, player);
NewPlayerSnapshot B = GetPlayerSnapshot(msgB, player);
if (A != null && B != null)
{
interpolatePlayer(player, A, B, interpolate_factor);
}
}
else
{
NewPlayerSnapshot snapshot = GetPlayerSnapshot(msgB, player);
if (snapshot != null)
{
extrapolatePlayer(player, snapshot, delta_t);
}
}
}
}
}
