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PacketSerializer.cs
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PacketSerializer.cs
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/**
* Copyright (c) 2017-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the Scripts directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
using System;
using UnityEngine;
using UnityEngine.Assertions;
using System.Collections.Generic;
public class PacketSerializer: Network.Serializer
{
public enum PacketType
{
ServerInfo = 1, // information about players connected to the server. broadcast from server -> clients whenever a player joins or leaves the game.
StateUpdate = 0, // most recent state of the world, delta encoded relative to most recent state per-object acked by the client. sent 90 times per-second.
};
public void WriteServerInfoPacket( Network.WriteStream stream, bool[] clientConnected, ulong[] clientUserId, string[] clientUserName )
{
byte packetType = (byte) PacketType.ServerInfo;
write_bits( stream, packetType, 8 );
for ( int i = 0; i < Constants.MaxClients; ++i )
{
write_bool( stream, clientConnected[i] );
if ( !clientConnected[i] )
continue;
write_bits( stream, clientUserId[i], 64 );
write_string( stream, clientUserName[i] );
}
}
public void ReadServerInfoPacket( Network.ReadStream stream, bool[] clientConnected, ulong[] clientUserId, string[] clientUserName )
{
byte packetType = 0;
read_bits( stream, out packetType, 8 );
Debug.Assert( packetType == (byte) PacketType.ServerInfo );
for ( int i = 0; i < Constants.MaxClients; ++i )
{
read_bool( stream, out clientConnected[i] );
if ( !clientConnected[i] )
continue;
read_bits( stream, out clientUserId[i], 64 );
read_string( stream, out clientUserName[i] );
}
}
public void WriteStateUpdatePacket( Network.WriteStream stream, ref Network.PacketHeader header, int numAvatarStates, AvatarStateQuantized[] avatarState, int numStateUpdates, int[] cubeIds, bool[] notChanged, bool[] hasDelta, bool[] perfectPrediction, bool[] hasPredictionDelta, ushort[] baselineSequence, CubeState[] cubeState, CubeDelta[] cubeDelta, CubeDelta[] predictionDelta )
{
byte packetType = (byte) PacketType.StateUpdate;
write_bits( stream, packetType, 8 );
write_bits( stream, header.sequence, 16 );
write_bits( stream, header.ack, 16 );
write_bits( stream, header.ack_bits, 32 );
write_bits( stream, header.frameNumber, 32 );
write_bits( stream, header.resetSequence, 16 );
write_float( stream, header.avatarSampleTimeOffset );
write_int( stream, numAvatarStates, 0, Constants.MaxClients );
for ( int i = 0; i < numAvatarStates; ++i )
{
write_avatar_state( stream, ref avatarState[i] );
}
write_int( stream, numStateUpdates, 0, Constants.MaxStateUpdates );
for ( int i = 0; i < numStateUpdates; ++i )
{
write_int( stream, cubeIds[i], 0, Constants.NumCubes - 1 );
#if DEBUG_DELTA_COMPRESSION
write_int( stream, cubeDelta[i].absolute_position_x, Constants.PositionMinimumXZ, Constants.PositionMaximumXZ );
write_int( stream, cubeDelta[i].absolute_position_y, Constants.PositionMinimumY, Constants.PositionMaximumY );
write_int( stream, cubeDelta[i].absolute_position_z, Constants.PositionMinimumXZ, Constants.PositionMaximumXZ );
#endif // #if DEBUG_DELTA_COMPRESSION
write_int( stream, cubeState[i].authorityIndex, 0, Constants.MaxAuthority - 1 );
write_bits( stream, cubeState[i].authoritySequence, 16 );
write_bits( stream, cubeState[i].ownershipSequence, 16 );
write_bool( stream, notChanged[i] );
if ( notChanged[i] )
{
write_bits( stream, baselineSequence[i], 16 );
}
else
{
write_bool( stream, perfectPrediction[i] );
if ( perfectPrediction[i] )
{
write_bits( stream, baselineSequence[i], 16 );
write_bits( stream, cubeState[i].rotation_largest, 2 );
write_bits( stream, cubeState[i].rotation_a, Constants.RotationBits );
write_bits( stream, cubeState[i].rotation_b, Constants.RotationBits );
write_bits( stream, cubeState[i].rotation_c, Constants.RotationBits );
}
else
{
write_bool( stream, hasPredictionDelta[i] );
if ( hasPredictionDelta[i] )
{
write_bits( stream, baselineSequence[i], 16 );
write_bool( stream, cubeState[i].active );
write_linear_velocity_delta( stream, predictionDelta[i].linear_velocity_delta_x, predictionDelta[i].linear_velocity_delta_y, predictionDelta[i].linear_velocity_delta_z );
write_angular_velocity_delta( stream, predictionDelta[i].angular_velocity_delta_x, predictionDelta[i].angular_velocity_delta_y, predictionDelta[i].angular_velocity_delta_z );
write_position_delta( stream, predictionDelta[i].position_delta_x, predictionDelta[i].position_delta_y, predictionDelta[i].position_delta_z );
write_bits( stream, cubeState[i].rotation_largest, 2 );
write_bits( stream, cubeState[i].rotation_a, Constants.RotationBits );
write_bits( stream, cubeState[i].rotation_b, Constants.RotationBits );
write_bits( stream, cubeState[i].rotation_c, Constants.RotationBits );
}
else
{
write_bool( stream, hasDelta[i] );
if ( hasDelta[i] )
{
write_bits( stream, baselineSequence[i], 16 );
write_bool( stream, cubeState[i].active );
write_linear_velocity_delta( stream, cubeDelta[i].linear_velocity_delta_x, cubeDelta[i].linear_velocity_delta_y, cubeDelta[i].linear_velocity_delta_z );
write_angular_velocity_delta( stream, cubeDelta[i].angular_velocity_delta_x, cubeDelta[i].angular_velocity_delta_y, cubeDelta[i].angular_velocity_delta_z );
write_position_delta( stream, cubeDelta[i].position_delta_x, cubeDelta[i].position_delta_y, cubeDelta[i].position_delta_z );
write_bits( stream, cubeState[i].rotation_largest, 2 );
write_bits( stream, cubeState[i].rotation_a, Constants.RotationBits );
write_bits( stream, cubeState[i].rotation_b, Constants.RotationBits );
write_bits( stream, cubeState[i].rotation_c, Constants.RotationBits );
}
else
{
write_bool( stream, cubeState[i].active );
write_int( stream, cubeState[i].position_x, Constants.PositionMinimumXZ, Constants.PositionMaximumXZ );
write_int( stream, cubeState[i].position_y, Constants.PositionMinimumY, Constants.PositionMaximumY );
write_int( stream, cubeState[i].position_z, Constants.PositionMinimumXZ, Constants.PositionMaximumXZ );
write_bits( stream, cubeState[i].rotation_largest, 2 );
write_bits( stream, cubeState[i].rotation_a, Constants.RotationBits );
write_bits( stream, cubeState[i].rotation_b, Constants.RotationBits );
write_bits( stream, cubeState[i].rotation_c, Constants.RotationBits );
if ( cubeState[i].active )
{
write_int( stream, cubeState[i].linear_velocity_x, Constants.LinearVelocityMinimum, Constants.LinearVelocityMaximum );
write_int( stream, cubeState[i].linear_velocity_y, Constants.LinearVelocityMinimum, Constants.LinearVelocityMaximum );
write_int( stream, cubeState[i].linear_velocity_z, Constants.LinearVelocityMinimum, Constants.LinearVelocityMaximum );
write_int( stream, cubeState[i].angular_velocity_x, Constants.AngularVelocityMinimum, Constants.AngularVelocityMaximum );
write_int( stream, cubeState[i].angular_velocity_y, Constants.AngularVelocityMinimum, Constants.AngularVelocityMaximum );
write_int( stream, cubeState[i].angular_velocity_z, Constants.AngularVelocityMinimum, Constants.AngularVelocityMaximum );
}
}
}
}
}
}
}
public void ReadStateUpdatePacketHeader( Network.ReadStream stream, out Network.PacketHeader header )
{
byte packetType = 0;
read_bits( stream, out packetType, 8 );
Debug.Assert( packetType == (byte) PacketType.StateUpdate );
read_bits( stream, out header.sequence, 16 );
read_bits( stream, out header.ack, 16 );
read_bits( stream, out header.ack_bits, 32 );
read_bits( stream, out header.frameNumber, 32 );
read_bits( stream, out header.resetSequence, 16 );
read_float( stream, out header.avatarSampleTimeOffset );
}
public void ReadStateUpdatePacket( Network.ReadStream stream, out Network.PacketHeader header, out int numAvatarStates, AvatarStateQuantized[] avatarState, out int numStateUpdates, int[] cubeIds, bool[] notChanged, bool[] hasDelta, bool[] perfectPrediction, bool[] hasPredictionDelta, ushort[] baselineSequence, CubeState[] cubeState, CubeDelta[] cubeDelta, CubeDelta[] predictionDelta )
{
byte packetType = 0;
read_bits( stream, out packetType, 8 );
Debug.Assert( packetType == (byte) PacketType.StateUpdate );
read_bits( stream, out header.sequence, 16 );
read_bits( stream, out header.ack, 16 );
read_bits( stream, out header.ack_bits, 32 );
read_bits( stream, out header.frameNumber, 32 );
read_bits( stream, out header.resetSequence, 16 );
read_float( stream, out header.avatarSampleTimeOffset );
read_int( stream, out numAvatarStates, 0, Constants.MaxClients );
for ( int i = 0; i < numAvatarStates; ++i )
{
read_avatar_state( stream, out avatarState[i] );
}
read_int( stream, out numStateUpdates, 0, Constants.MaxStateUpdates );
for ( int i = 0; i < numStateUpdates; ++i )
{
hasDelta[i] = false;
perfectPrediction[i] = false;
hasPredictionDelta[i] = false;
read_int( stream, out cubeIds[i], 0, Constants.NumCubes - 1 );
#if DEBUG_DELTA_COMPRESSION
read_int( stream, out cubeDelta[i].absolute_position_x, Constants.PositionMinimumXZ, Constants.PositionMaximumXZ );
read_int( stream, out cubeDelta[i].absolute_position_y, Constants.PositionMinimumY, Constants.PositionMaximumY );
read_int( stream, out cubeDelta[i].absolute_position_z, Constants.PositionMinimumXZ, Constants.PositionMaximumXZ );
#endif // #if DEBUG_DELTA_COMPRESSION
read_int( stream, out cubeState[i].authorityIndex, 0, Constants.MaxAuthority - 1 );
read_bits( stream, out cubeState[i].authoritySequence, 16 );
read_bits( stream, out cubeState[i].ownershipSequence, 16 );
read_bool( stream, out notChanged[i] );
if ( notChanged[i] )
{
read_bits( stream, out baselineSequence[i], 16 );
}
else
{
read_bool( stream, out perfectPrediction[i] );
if ( perfectPrediction[i] )
{
read_bits( stream, out baselineSequence[i], 16 );
read_bits( stream, out cubeState[i].rotation_largest, 2 );
read_bits( stream, out cubeState[i].rotation_a, Constants.RotationBits );
read_bits( stream, out cubeState[i].rotation_b, Constants.RotationBits );
read_bits( stream, out cubeState[i].rotation_c, Constants.RotationBits );
cubeState[i].active = true;
}
else
{
read_bool( stream, out hasPredictionDelta[i] );
if ( hasPredictionDelta[i] )
{
read_bits( stream, out baselineSequence[i], 16 );
read_bool( stream, out cubeState[i].active );
read_linear_velocity_delta( stream, out predictionDelta[i].linear_velocity_delta_x, out predictionDelta[i].linear_velocity_delta_y, out predictionDelta[i].linear_velocity_delta_z );
read_angular_velocity_delta( stream, out predictionDelta[i].angular_velocity_delta_x, out predictionDelta[i].angular_velocity_delta_y, out predictionDelta[i].angular_velocity_delta_z );
read_position_delta( stream, out predictionDelta[i].position_delta_x, out predictionDelta[i].position_delta_y, out predictionDelta[i].position_delta_z );
read_bits( stream, out cubeState[i].rotation_largest, 2 );
read_bits( stream, out cubeState[i].rotation_a, Constants.RotationBits );
read_bits( stream, out cubeState[i].rotation_b, Constants.RotationBits );
read_bits( stream, out cubeState[i].rotation_c, Constants.RotationBits );
}
else
{
read_bool( stream, out hasDelta[i] );
if ( hasDelta[i] )
{
read_bits( stream, out baselineSequence[i], 16 );
read_bool( stream, out cubeState[i].active );
read_linear_velocity_delta( stream, out cubeDelta[i].linear_velocity_delta_x, out cubeDelta[i].linear_velocity_delta_y, out cubeDelta[i].linear_velocity_delta_z );
read_angular_velocity_delta( stream, out cubeDelta[i].angular_velocity_delta_x, out cubeDelta[i].angular_velocity_delta_y, out cubeDelta[i].angular_velocity_delta_z );
read_position_delta( stream, out cubeDelta[i].position_delta_x, out cubeDelta[i].position_delta_y, out cubeDelta[i].position_delta_z );
read_bits( stream, out cubeState[i].rotation_largest, 2 );
read_bits( stream, out cubeState[i].rotation_a, Constants.RotationBits );
read_bits( stream, out cubeState[i].rotation_b, Constants.RotationBits );
read_bits( stream, out cubeState[i].rotation_c, Constants.RotationBits );
}
else
{
read_bool( stream, out cubeState[i].active );
read_int( stream, out cubeState[i].position_x, Constants.PositionMinimumXZ, Constants.PositionMaximumXZ );
read_int( stream, out cubeState[i].position_y, Constants.PositionMinimumY, Constants.PositionMaximumY );
read_int( stream, out cubeState[i].position_z, Constants.PositionMinimumXZ, Constants.PositionMaximumXZ );
read_bits( stream, out cubeState[i].rotation_largest, 2 );
read_bits( stream, out cubeState[i].rotation_a, Constants.RotationBits );
read_bits( stream, out cubeState[i].rotation_b, Constants.RotationBits );
read_bits( stream, out cubeState[i].rotation_c, Constants.RotationBits );
if ( cubeState[i].active )
{
read_int( stream, out cubeState[i].linear_velocity_x, Constants.LinearVelocityMinimum, Constants.LinearVelocityMaximum );
read_int( stream, out cubeState[i].linear_velocity_y, Constants.LinearVelocityMinimum, Constants.LinearVelocityMaximum );
read_int( stream, out cubeState[i].linear_velocity_z, Constants.LinearVelocityMinimum, Constants.LinearVelocityMaximum );
read_int( stream, out cubeState[i].angular_velocity_x, Constants.AngularVelocityMinimum, Constants.AngularVelocityMaximum );
read_int( stream, out cubeState[i].angular_velocity_y, Constants.AngularVelocityMinimum, Constants.AngularVelocityMaximum );
read_int( stream, out cubeState[i].angular_velocity_z, Constants.AngularVelocityMinimum, Constants.AngularVelocityMaximum );
}
else
{
cubeState[i].linear_velocity_x = 0;
cubeState[i].linear_velocity_y = 0;
cubeState[i].linear_velocity_z = 0;
cubeState[i].angular_velocity_x = 0;
cubeState[i].angular_velocity_y = 0;
cubeState[i].angular_velocity_z = 0;
}
}
}
}
}
}
}
void write_position_delta( Network.WriteStream stream, int delta_x, int delta_y, int delta_z )
{
Assert.IsTrue( delta_x >= -Constants.PositionDeltaMax );
Assert.IsTrue( delta_x <= +Constants.PositionDeltaMax );
Assert.IsTrue( delta_y >= -Constants.PositionDeltaMax );
Assert.IsTrue( delta_y <= +Constants.PositionDeltaMax );
Assert.IsTrue( delta_z >= -Constants.PositionDeltaMax );
Assert.IsTrue( delta_z <= +Constants.PositionDeltaMax );
uint unsigned_x = Network.Util.SignedToUnsigned( delta_x );
uint unsigned_y = Network.Util.SignedToUnsigned( delta_y );
uint unsigned_z = Network.Util.SignedToUnsigned( delta_z );
bool small_x = unsigned_x <= Constants.PositionDeltaSmallThreshold;
bool small_y = unsigned_y <= Constants.PositionDeltaSmallThreshold;
bool small_z = unsigned_z <= Constants.PositionDeltaSmallThreshold;
bool all_small = small_x && small_y && small_z;
write_bool( stream, all_small );
if ( all_small )
{
write_bits( stream, unsigned_x, Constants.PositionDeltaSmallBits );
write_bits( stream, unsigned_y, Constants.PositionDeltaSmallBits );
write_bits( stream, unsigned_z, Constants.PositionDeltaSmallBits );
}
else
{
write_bool( stream, small_x );
if ( small_x )
{
write_bits( stream, unsigned_x, Constants.PositionDeltaSmallBits );
}
else
{
unsigned_x -= Constants.PositionDeltaSmallThreshold;
bool medium_x = unsigned_x < Constants.PositionDeltaMediumThreshold;
write_bool( stream, medium_x );
if ( medium_x )
{
write_bits( stream, unsigned_x, Constants.PositionDeltaMediumBits );
}
else
{
write_int( stream, delta_x, -Constants.PositionDeltaMax, +Constants.PositionDeltaMax );
}
}
write_bool( stream, small_y );
if ( small_y )
{
write_bits( stream, unsigned_y, Constants.PositionDeltaSmallBits );
}
else
{
unsigned_y -= Constants.PositionDeltaSmallThreshold;
bool medium_y = unsigned_y < Constants.PositionDeltaMediumThreshold;
write_bool( stream, medium_y );
if ( medium_y )
{
write_bits( stream, unsigned_y, Constants.PositionDeltaMediumBits );
}
else
{
write_int( stream, delta_y, -Constants.PositionDeltaMax, +Constants.PositionDeltaMax );
}
}
write_bool( stream, small_z );
if ( small_z )
{
write_bits( stream, unsigned_z, Constants.PositionDeltaSmallBits );
}
else
{
unsigned_z -= Constants.PositionDeltaSmallThreshold;
bool medium_z = unsigned_z < Constants.PositionDeltaMediumThreshold;
write_bool( stream, medium_z );
if ( medium_z )
{
write_bits( stream, unsigned_z, Constants.PositionDeltaMediumBits );
}
else
{
write_int( stream, delta_z, -Constants.PositionDeltaMax, +Constants.PositionDeltaMax );
}
}
}
}
void read_position_delta( Network.ReadStream stream, out int delta_x, out int delta_y, out int delta_z )
{
bool all_small;
read_bool( stream, out all_small );
uint unsigned_x;
uint unsigned_y;
uint unsigned_z;
if ( all_small )
{
read_bits( stream, out unsigned_x, Constants.PositionDeltaSmallBits );
read_bits( stream, out unsigned_y, Constants.PositionDeltaSmallBits );
read_bits( stream, out unsigned_z, Constants.PositionDeltaSmallBits );
delta_x = Network.Util.UnsignedToSigned( unsigned_x );
delta_y = Network.Util.UnsignedToSigned( unsigned_y );
delta_z = Network.Util.UnsignedToSigned( unsigned_z );
}
else
{
bool small_x;
read_bool( stream, out small_x );
if ( small_x )
{
read_bits( stream, out unsigned_x, Constants.PositionDeltaSmallBits );
delta_x = Network.Util.UnsignedToSigned( unsigned_x );
}
else
{
bool medium_x;
read_bool( stream, out medium_x );
if ( medium_x )
{
read_bits( stream, out unsigned_x, Constants.PositionDeltaMediumBits );
delta_x = Network.Util.UnsignedToSigned( unsigned_x + Constants.PositionDeltaSmallThreshold );
}
else
{
read_int( stream, out delta_x, -Constants.PositionDeltaMax, +Constants.PositionDeltaMax );
}
}
bool small_y;
read_bool( stream, out small_y );
if ( small_y )
{
read_bits( stream, out unsigned_y, Constants.PositionDeltaSmallBits );
delta_y = Network.Util.UnsignedToSigned( unsigned_y );
}
else
{
bool medium_y;
read_bool( stream, out medium_y );
if ( medium_y )
{
read_bits( stream, out unsigned_y, Constants.PositionDeltaMediumBits );
delta_y = Network.Util.UnsignedToSigned( unsigned_y + Constants.PositionDeltaSmallThreshold );
}
else
{
read_int( stream, out delta_y, -Constants.PositionDeltaMax, +Constants.PositionDeltaMax );
}
}
bool small_z;
read_bool( stream, out small_z );
if ( small_z )
{
read_bits( stream, out unsigned_z, Constants.PositionDeltaSmallBits );
delta_z = Network.Util.UnsignedToSigned( unsigned_z );
}
else
{
bool medium_z;
read_bool( stream, out medium_z );
if ( medium_z )
{
read_bits( stream, out unsigned_z, Constants.PositionDeltaMediumBits );
delta_z = Network.Util.UnsignedToSigned( unsigned_z + Constants.PositionDeltaSmallThreshold );
}
else
{
read_int( stream, out delta_z, -Constants.PositionDeltaMax, +Constants.PositionDeltaMax );
}
}
}
}
void write_linear_velocity_delta( Network.WriteStream stream, int delta_x, int delta_y, int delta_z )
{
Assert.IsTrue( delta_x >= -Constants.LinearVelocityDeltaMax );
Assert.IsTrue( delta_x <= +Constants.LinearVelocityDeltaMax );
Assert.IsTrue( delta_y >= -Constants.LinearVelocityDeltaMax );
Assert.IsTrue( delta_y <= +Constants.LinearVelocityDeltaMax );
Assert.IsTrue( delta_z >= -Constants.LinearVelocityDeltaMax );
Assert.IsTrue( delta_z <= +Constants.LinearVelocityDeltaMax );
uint unsigned_x = Network.Util.SignedToUnsigned( delta_x );
uint unsigned_y = Network.Util.SignedToUnsigned( delta_y );
uint unsigned_z = Network.Util.SignedToUnsigned( delta_z );
bool small_x = unsigned_x <= Constants.LinearVelocityDeltaSmallThreshold;
bool small_y = unsigned_y <= Constants.LinearVelocityDeltaSmallThreshold;
bool small_z = unsigned_z <= Constants.LinearVelocityDeltaSmallThreshold;
bool all_small = small_x && small_y && small_z;
write_bool( stream, all_small );
if ( all_small )
{
write_bits( stream, unsigned_x, Constants.LinearVelocityDeltaSmallBits );
write_bits( stream, unsigned_y, Constants.LinearVelocityDeltaSmallBits );
write_bits( stream, unsigned_z, Constants.LinearVelocityDeltaSmallBits );
}
else
{
write_bool( stream, small_x );
if ( small_x )
{
write_bits( stream, unsigned_x, Constants.LinearVelocityDeltaSmallBits );
}
else
{
unsigned_x -= Constants.LinearVelocityDeltaSmallThreshold;
bool medium_x = unsigned_x < Constants.LinearVelocityDeltaMediumThreshold;
write_bool( stream, medium_x );
if ( medium_x )
{
write_bits( stream, unsigned_x, Constants.LinearVelocityDeltaMediumBits );
}
else
{
write_int( stream, delta_x, -Constants.LinearVelocityDeltaMax, +Constants.LinearVelocityDeltaMax );
}
}
write_bool( stream, small_y );
if ( small_y )
{
write_bits( stream, unsigned_y, Constants.LinearVelocityDeltaSmallBits );
}
else
{
unsigned_y -= Constants.LinearVelocityDeltaSmallThreshold;
bool medium_y = unsigned_y < Constants.LinearVelocityDeltaMediumThreshold;
write_bool( stream, medium_y );
if ( medium_y )
{
write_bits( stream, unsigned_y, Constants.LinearVelocityDeltaMediumBits );
}
else
{
write_int( stream, delta_y, -Constants.LinearVelocityDeltaMax, +Constants.LinearVelocityDeltaMax );
}
}
write_bool( stream, small_z );
if ( small_z )
{
write_bits( stream, unsigned_z, Constants.LinearVelocityDeltaSmallBits );
}
else
{
unsigned_z -= Constants.LinearVelocityDeltaSmallThreshold;
bool medium_z = unsigned_z < Constants.LinearVelocityDeltaMediumThreshold;
write_bool( stream, medium_z );
if ( medium_z )
{
write_bits( stream, unsigned_z, Constants.LinearVelocityDeltaMediumBits );
}
else
{
write_int( stream, delta_z, -Constants.LinearVelocityDeltaMax, +Constants.LinearVelocityDeltaMax );
}
}
}
}
void read_linear_velocity_delta( Network.ReadStream stream, out int delta_x, out int delta_y, out int delta_z )
{
bool all_small;
read_bool( stream, out all_small );
uint unsigned_x;
uint unsigned_y;
uint unsigned_z;
if ( all_small )
{
read_bits( stream, out unsigned_x, Constants.LinearVelocityDeltaSmallBits );
read_bits( stream, out unsigned_y, Constants.LinearVelocityDeltaSmallBits );
read_bits( stream, out unsigned_z, Constants.LinearVelocityDeltaSmallBits );
delta_x = Network.Util.UnsignedToSigned( unsigned_x );
delta_y = Network.Util.UnsignedToSigned( unsigned_y );
delta_z = Network.Util.UnsignedToSigned( unsigned_z );
}
else
{
bool small_x;
read_bool( stream, out small_x );
if ( small_x )
{
read_bits( stream, out unsigned_x, Constants.LinearVelocityDeltaSmallBits );
delta_x = Network.Util.UnsignedToSigned( unsigned_x );
}
else
{
bool medium_x;
read_bool( stream, out medium_x );
if ( medium_x )
{
read_bits( stream, out unsigned_x, Constants.LinearVelocityDeltaMediumBits );
delta_x = Network.Util.UnsignedToSigned( unsigned_x + Constants.LinearVelocityDeltaSmallThreshold );
}
else
{
read_int( stream, out delta_x, -Constants.LinearVelocityDeltaMax, +Constants.LinearVelocityDeltaMax );
}
}
bool small_y;
read_bool( stream, out small_y );
if ( small_y )
{
read_bits( stream, out unsigned_y, Constants.LinearVelocityDeltaSmallBits );
delta_y = Network.Util.UnsignedToSigned( unsigned_y );
}
else
{
bool medium_y;
read_bool( stream, out medium_y );
if ( medium_y )
{
read_bits( stream, out unsigned_y, Constants.LinearVelocityDeltaMediumBits );
delta_y = Network.Util.UnsignedToSigned( unsigned_y + Constants.LinearVelocityDeltaSmallThreshold );
}
else
{
read_int( stream, out delta_y, -Constants.LinearVelocityDeltaMax, +Constants.LinearVelocityDeltaMax );
}
}
bool small_z;
read_bool( stream, out small_z );
if ( small_z )
{
read_bits( stream, out unsigned_z, Constants.LinearVelocityDeltaSmallBits );
delta_z = Network.Util.UnsignedToSigned( unsigned_z );
}
else
{
bool medium_z;
read_bool( stream, out medium_z );
if ( medium_z )
{
read_bits( stream, out unsigned_z, Constants.LinearVelocityDeltaMediumBits );
delta_z = Network.Util.UnsignedToSigned( unsigned_z + Constants.LinearVelocityDeltaSmallThreshold );
}
else
{
read_int( stream, out delta_z, -Constants.LinearVelocityDeltaMax, +Constants.LinearVelocityDeltaMax );
}
}
}
}
void write_angular_velocity_delta( Network.WriteStream stream, int delta_x, int delta_y, int delta_z )
{
Assert.IsTrue( delta_x >= -Constants.AngularVelocityDeltaMax );
Assert.IsTrue( delta_x <= +Constants.AngularVelocityDeltaMax );
Assert.IsTrue( delta_y >= -Constants.AngularVelocityDeltaMax );
Assert.IsTrue( delta_y <= +Constants.AngularVelocityDeltaMax );
Assert.IsTrue( delta_z >= -Constants.AngularVelocityDeltaMax );
Assert.IsTrue( delta_z <= +Constants.AngularVelocityDeltaMax );
uint unsigned_x = Network.Util.SignedToUnsigned( delta_x );
uint unsigned_y = Network.Util.SignedToUnsigned( delta_y );
uint unsigned_z = Network.Util.SignedToUnsigned( delta_z );
bool small_x = unsigned_x <= Constants.AngularVelocityDeltaSmallThreshold;
bool small_y = unsigned_y <= Constants.AngularVelocityDeltaSmallThreshold;
bool small_z = unsigned_z <= Constants.AngularVelocityDeltaSmallThreshold;
bool all_small = small_x && small_y && small_z;
write_bool( stream, all_small );
if ( all_small )
{
write_bits( stream, unsigned_x, Constants.AngularVelocityDeltaSmallBits );
write_bits( stream, unsigned_y, Constants.AngularVelocityDeltaSmallBits );
write_bits( stream, unsigned_z, Constants.AngularVelocityDeltaSmallBits );
}
else
{
write_bool( stream, small_x );
if ( small_x )
{
write_bits( stream, unsigned_x, Constants.AngularVelocityDeltaSmallBits );
}
else
{
unsigned_x -= Constants.AngularVelocityDeltaSmallThreshold;
bool medium_x = unsigned_x < Constants.AngularVelocityDeltaMediumThreshold;
write_bool( stream, medium_x );
if ( medium_x )
{
write_bits( stream, unsigned_x, Constants.AngularVelocityDeltaMediumBits );
}
else
{
write_int( stream, delta_x, -Constants.AngularVelocityDeltaMax, +Constants.AngularVelocityDeltaMax );
}
}
write_bool( stream, small_y );
if ( small_y )
{
write_bits( stream, unsigned_y, Constants.AngularVelocityDeltaSmallBits );
}
else
{
unsigned_y -= Constants.AngularVelocityDeltaSmallThreshold;
bool medium_y = unsigned_y < Constants.AngularVelocityDeltaMediumThreshold;
write_bool( stream, medium_y );
if ( medium_y )
{
write_bits( stream, unsigned_y, Constants.AngularVelocityDeltaMediumBits );
}
else
{
write_int( stream, delta_y, -Constants.AngularVelocityDeltaMax, +Constants.AngularVelocityDeltaMax );
}
}
write_bool( stream, small_z );
if ( small_z )
{
write_bits( stream, unsigned_z, Constants.AngularVelocityDeltaSmallBits );
}
else
{
unsigned_z -= Constants.AngularVelocityDeltaSmallThreshold;
bool medium_z = unsigned_z < Constants.AngularVelocityDeltaMediumThreshold;
write_bool( stream, medium_z );
if ( medium_z )
{
write_bits( stream, unsigned_z, Constants.AngularVelocityDeltaMediumBits );
}
else
{
write_int( stream, delta_z, -Constants.AngularVelocityDeltaMax, +Constants.AngularVelocityDeltaMax );
}
}
}
}
void read_angular_velocity_delta( Network.ReadStream stream, out int delta_x, out int delta_y, out int delta_z )
{
bool all_small;
read_bool( stream, out all_small );
uint unsigned_x;
uint unsigned_y;
uint unsigned_z;
if ( all_small )
{
read_bits( stream, out unsigned_x, Constants.AngularVelocityDeltaSmallBits );
read_bits( stream, out unsigned_y, Constants.AngularVelocityDeltaSmallBits );
read_bits( stream, out unsigned_z, Constants.AngularVelocityDeltaSmallBits );
delta_x = Network.Util.UnsignedToSigned( unsigned_x );
delta_y = Network.Util.UnsignedToSigned( unsigned_y );
delta_z = Network.Util.UnsignedToSigned( unsigned_z );
}
else
{
bool small_x;
read_bool( stream, out small_x );
if ( small_x )
{
read_bits( stream, out unsigned_x, Constants.AngularVelocityDeltaSmallBits );
delta_x = Network.Util.UnsignedToSigned( unsigned_x );
}
else
{
bool medium_x;
read_bool( stream, out medium_x );
if ( medium_x )
{
read_bits( stream, out unsigned_x, Constants.AngularVelocityDeltaMediumBits );
delta_x = Network.Util.UnsignedToSigned( unsigned_x + Constants.AngularVelocityDeltaSmallThreshold );
}
else
{
read_int( stream, out delta_x, -Constants.AngularVelocityDeltaMax, +Constants.AngularVelocityDeltaMax );
}
}
bool small_y;
read_bool( stream, out small_y );
if ( small_y )
{
read_bits( stream, out unsigned_y, Constants.AngularVelocityDeltaSmallBits );
delta_y = Network.Util.UnsignedToSigned( unsigned_y );
}
else
{
bool medium_y;
read_bool( stream, out medium_y );
if ( medium_y )
{
read_bits( stream, out unsigned_y, Constants.AngularVelocityDeltaMediumBits );
delta_y = Network.Util.UnsignedToSigned( unsigned_y + Constants.AngularVelocityDeltaSmallThreshold );
}
else
{
read_int( stream, out delta_y, -Constants.AngularVelocityDeltaMax, +Constants.AngularVelocityDeltaMax );
}
}
bool small_z;
read_bool( stream, out small_z );
if ( small_z )
{
read_bits( stream, out unsigned_z, Constants.AngularVelocityDeltaSmallBits );
delta_z = Network.Util.UnsignedToSigned( unsigned_z );
}
else
{
bool medium_z;
read_bool( stream, out medium_z );
if ( medium_z )
{
read_bits( stream, out unsigned_z, Constants.AngularVelocityDeltaMediumBits );
delta_z = Network.Util.UnsignedToSigned( unsigned_z + Constants.AngularVelocityDeltaSmallThreshold );
}
else
{
read_int( stream, out delta_z, -Constants.AngularVelocityDeltaMax, +Constants.AngularVelocityDeltaMax );
}
}
}
}
void write_avatar_state( Network.WriteStream stream, ref AvatarStateQuantized avatarState )
{
write_int( stream, avatarState.client_index, 0, Constants.MaxClients - 1 );
write_int( stream, avatarState.head_position_x, Constants.PositionMinimumXZ, Constants.PositionMaximumXZ );
write_int( stream, avatarState.head_position_y, Constants.PositionMinimumY, Constants.PositionMaximumY );
write_int( stream, avatarState.head_position_z, Constants.PositionMinimumXZ, Constants.PositionMaximumXZ );
write_bits( stream, avatarState.head_rotation_largest, 2 );
write_bits( stream, avatarState.head_rotation_a, Constants.RotationBits );
write_bits( stream, avatarState.head_rotation_b, Constants.RotationBits );
write_bits( stream, avatarState.head_rotation_c, Constants.RotationBits );
write_int( stream, avatarState.left_hand_position_x, Constants.PositionMinimumXZ, Constants.PositionMaximumXZ );
write_int( stream, avatarState.left_hand_position_y, Constants.PositionMinimumY, Constants.PositionMaximumY );
write_int( stream, avatarState.left_hand_position_z, Constants.PositionMinimumXZ, Constants.PositionMaximumXZ );
write_bits( stream, avatarState.left_hand_rotation_largest, 2 );
write_bits( stream, avatarState.left_hand_rotation_a, Constants.RotationBits );