Multiplayer::MultiplayerSystemComponent Class Reference

Multiplayer system component wraps the bridging logic between the game and transport layer. More...

#include <MultiplayerSystemComponent.h>

Inherits AZ::Component, AZ::TickBus::Handler, SessionNotificationBus::Handler, Multiplayer::ISessionHandlingClientRequests, AzNetworking::IConnectionListener, Multiplayer::IMultiplayer, AzFramework::RootSpawnableNotificationBus::Handler, and AzFramework::LevelLoadBlockerBus::Handler.

Public Member Functions
	AZ_COMPONENT (MultiplayerSystemComponent, "{7C99C4C1-1103-43F9-AD62-8B91CF7C1981}")
bool	IsHandshakeComplete (AzNetworking::IConnection *connection) const
bool	HandleRequest (AzNetworking::IConnection *connection, const AzNetworking::IPacketHeader &packetHeader, MultiplayerPackets::Connect &packet)
bool	HandleRequest (AzNetworking::IConnection *connection, const AzNetworking::IPacketHeader &packetHeader, MultiplayerPackets::Accept &packet)
bool	HandleRequest (AzNetworking::IConnection *connection, const AzNetworking::IPacketHeader &packetHeader, MultiplayerPackets::ReadyForEntityUpdates &packet)
bool	HandleRequest (AzNetworking::IConnection *connection, const AzNetworking::IPacketHeader &packetHeader, MultiplayerPackets::SyncConsole &packet)
bool	HandleRequest (AzNetworking::IConnection *connection, const AzNetworking::IPacketHeader &packetHeader, MultiplayerPackets::ConsoleCommand &packet)
bool	HandleRequest (AzNetworking::IConnection *connection, const AzNetworking::IPacketHeader &packetHeader, MultiplayerPackets::EntityUpdates &packet)
bool	HandleRequest (AzNetworking::IConnection *connection, const AzNetworking::IPacketHeader &packetHeader, MultiplayerPackets::EntityRpcs &packet)
bool	HandleRequest (AzNetworking::IConnection *connection, const AzNetworking::IPacketHeader &packetHeader, MultiplayerPackets::RequestReplicatorReset &packet)
bool	HandleRequest (AzNetworking::IConnection *connection, const AzNetworking::IPacketHeader &packetHeader, MultiplayerPackets::ClientMigration &packet)
bool	HandleRequest (AzNetworking::IConnection *connection, const AzNetworking::IPacketHeader &packetHeader, MultiplayerPackets::VersionMismatch &packet)
void	Activate () override
void	Deactivate () override
bool	OnSessionHealthCheck () override
bool	OnCreateSessionBegin (const SessionConfig &sessionConfig) override
void	OnCreateSessionEnd () override
bool	OnDestroySessionBegin () override
void	OnDestroySessionEnd () override
void	OnUpdateSessionBegin (const SessionConfig &sessionConfig, const AZStd::string &updateReason) override
void	OnUpdateSessionEnd () override
void	OnTick (float deltaTime, AZ::ScriptTimePoint time) override
int	GetTickOrder () override
AzNetworking::ConnectResult	ValidateConnect (const AzNetworking::IpAddress &remoteAddress, const AzNetworking::IPacketHeader &packetHeader, AzNetworking::ISerializer &serializer) override
void	OnConnect (AzNetworking::IConnection *connection) override
AzNetworking::PacketDispatchResult	OnPacketReceived (AzNetworking::IConnection *connection, const AzNetworking::IPacketHeader &packetHeader, AzNetworking::ISerializer &serializer) override
void	OnPacketLost (AzNetworking::IConnection *connection, AzNetworking::PacketId packetId) override
void	OnDisconnect (AzNetworking::IConnection *connection, AzNetworking::DisconnectReason reason, AzNetworking::TerminationEndpoint endpoint) override
bool	RequestPlayerJoinSession (const SessionConnectionConfig &sessionConnectionConfig) override
void	RequestPlayerLeaveSession () override
	Request the connected player leave session.
MultiplayerAgentType	GetAgentType () const override
void	InitializeMultiplayer (MultiplayerAgentType state) override
bool	StartHosting (uint16_t port=UseDefaultHostPort, bool isDedicated=true) override
bool	Connect (const AZStd::string &remoteAddress, uint16_t port) override
void	Terminate (AzNetworking::DisconnectReason reason) override
void	AddClientMigrationStartEventHandler (ClientMigrationStartEvent::Handler &handler) override
void	AddClientMigrationEndEventHandler (ClientMigrationEndEvent::Handler &handler) override
void	AddEndpointDisconnectedHandler (EndpointDisconnectedEvent::Handler &handler) override
void	AddNotifyClientMigrationHandler (NotifyClientMigrationEvent::Handler &handler) override
void	AddNotifyEntityMigrationEventHandler (NotifyEntityMigrationEvent::Handler &handler) override
void	AddConnectionAcquiredHandler (ConnectionAcquiredEvent::Handler &handler) override
void	AddNetworkInitHandler (NetworkInitEvent::Handler &handler) override
void	AddSessionInitHandler (SessionInitEvent::Handler &) override
void	AddSessionShutdownHandler (SessionShutdownEvent::Handler &) override
void	AddLevelLoadBlockedHandler (LevelLoadBlockedEvent::Handler &handler) override
void	AddNoServerLevelLoadedHandler (NoServerLevelLoadedEvent::Handler &handler) override
void	AddVersionMismatchHandler (VersionMismatchEvent::Handler &handler) override
void	AddServerAcceptanceReceivedHandler (ServerAcceptanceReceivedEvent::Handler &handler) override
void	SendNotifyClientMigrationEvent (AzNetworking::ConnectionId connectionId, const HostId &hostId, uint64_t userIdentifier, ClientInputId lastClientInputId, NetEntityId controlledEntityId) override
void	SendNotifyEntityMigrationEvent (const ConstNetworkEntityHandle &entityHandle, const HostId &remoteHostId) override
void	SendReadyForEntityUpdates (bool readyForEntityUpdates) override
AZ::TimeMs	GetCurrentHostTimeMs () const override
float	GetCurrentBlendFactor () const override
INetworkTime *	GetNetworkTime () override
INetworkEntityManager *	GetNetworkEntityManager () override
void	RegisterPlayerIdentifierForRejoin (uint64_t temporaryUserIdentifier, NetEntityId controlledEntityId) override
void	CompleteClientMigration (uint64_t temporaryUserIdentifier, AzNetworking::ConnectionId connectionId, const HostId &publicHostId, ClientInputId migratedClientInputId) override
void	SetShouldSpawnNetworkEntities (bool value) override
bool	GetShouldSpawnNetworkEntities () const override
void	DumpStats (const AZ::ConsoleCommandContainer &arguments)
void	OnRootSpawnableReady (AZ::Data::Asset< AzFramework::Spawnable > rootSpawnable, uint32_t generation) override
bool	ShouldBlockLevelLoading (const char *levelName) override
Public Member Functions inherited from Multiplayer::ISessionHandlingClientRequests
	AZ_RTTI (ISessionHandlingClientRequests, "{41DE6BD3-72BC-4443-BFF9-5B1B9396657A}")
Public Member Functions inherited from Multiplayer::IMultiplayer
	AZ_RTTI (IMultiplayer, "{90A001DD-AD31-46C7-9FBE-1059AFB7F5E9}")
MultiplayerStats &	GetStats ()

Static Public Member Functions
static void	Reflect (AZ::ReflectContext *context)
static void	GetRequiredServices (AZ::ComponentDescriptor::DependencyArrayType &required)
static void	GetProvidedServices (AZ::ComponentDescriptor::DependencyArrayType &provided)
static void	GetIncompatibleServices (AZ::ComponentDescriptor::DependencyArrayType &incompatible)

Additional Inherited Members
Static Public Attributes inherited from Multiplayer::IMultiplayer
static const uint16_t	UseDefaultHostPort = 0

Detailed Description

Multiplayer system component wraps the bridging logic between the game and transport layer.

Member Function Documentation

Activate()

void Multiplayer::MultiplayerSystemComponent::Activate ( )

override

AZ::Component overrides.

AddClientMigrationEndEventHandler()

void Multiplayer::MultiplayerSystemComponent::AddClientMigrationEndEventHandler ( ClientMigrationEndEvent::Handler &  handler )

overridevirtual

Adds a ClientMigrationEndEvent Handler which is invoked when a client completes migration.

Parameters

handler

The ClientMigrationEndEvent Handler to add

Implements Multiplayer::IMultiplayer.

AddClientMigrationStartEventHandler()

void Multiplayer::MultiplayerSystemComponent::AddClientMigrationStartEventHandler ( ClientMigrationStartEvent::Handler &  handler )

overridevirtual

Adds a ClientMigrationStartEvent Handler which is invoked at the start of a client migration.

Parameters

handler

The ClientMigrationStartEvent Handler to add

Implements Multiplayer::IMultiplayer.

AddConnectionAcquiredHandler()

void Multiplayer::MultiplayerSystemComponent::AddConnectionAcquiredHandler ( ConnectionAcquiredEvent::Handler &  handler )

overridevirtual

Adds a ConnectionAcquiredEvent Handler which is invoked when a new endpoint connects to the session.

Parameters

handler

The ConnectionAcquiredEvent Handler to add

Implements Multiplayer::IMultiplayer.

AddEndpointDisconnectedHandler()

void Multiplayer::MultiplayerSystemComponent::AddEndpointDisconnectedHandler ( EndpointDisconnectedEvent::Handler &  handler )

overridevirtual

Adds a EndpointDisconnectedEvent Handler which is invoked on the client when a disconnection occurs.

Parameters

handler

The EndpointDisconnectedEvent Handler to add

Implements Multiplayer::IMultiplayer.

AddLevelLoadBlockedHandler()

void Multiplayer::MultiplayerSystemComponent::AddLevelLoadBlockedHandler ( LevelLoadBlockedEvent::Handler &  handler )

overridevirtual

Adds a LevelLoadBlockedEvent Handler which is invoked whenever the multiplayer system blocks a level load.

Parameters

handler

The LevelLoadBlockedEvent handler to add

Implements Multiplayer::IMultiplayer.

AddNetworkInitHandler()

void Multiplayer::MultiplayerSystemComponent::AddNetworkInitHandler ( NetworkInitEvent::Handler &  handler )

overridevirtual

Adds a NetworkInitEvent Handler which is invoked when the network is initialized on the dedicated server or client-server.

Parameters

handler

The NetworkInitEvent Handler to add

Implements Multiplayer::IMultiplayer.

AddNoServerLevelLoadedHandler()

void Multiplayer::MultiplayerSystemComponent::AddNoServerLevelLoadedHandler ( NoServerLevelLoadedEvent::Handler &  handler )

overridevirtual

Adds a NoServerLevelLoadedEvent Handler which is invoked whenever a client connects to a server that doesn't have any level loaded.

Parameters

handler

The NoServerLevelLoadedEvent handler to add

Implements Multiplayer::IMultiplayer.

AddNotifyClientMigrationHandler()

void Multiplayer::MultiplayerSystemComponent::AddNotifyClientMigrationHandler ( NotifyClientMigrationEvent::Handler &  handler )

overridevirtual

Adds a NotifyClientMigrationEvent Handler which is invoked when a client migrates from one host to another.

Parameters

handler

The NotifyClientMigrationEvent Handler to add

Implements Multiplayer::IMultiplayer.

AddNotifyEntityMigrationEventHandler()

void Multiplayer::MultiplayerSystemComponent::AddNotifyEntityMigrationEventHandler ( NotifyEntityMigrationEvent::Handler &  handler )

overridevirtual

Adds a NotifyEntityMigrationEvent Handler which is invoked when an entity migrates from one host to another.

Parameters

handler

The NotifyEntityMigrationEvent Handler to add

Implements Multiplayer::IMultiplayer.

AddServerAcceptanceReceivedHandler()

void Multiplayer::MultiplayerSystemComponent::AddServerAcceptanceReceivedHandler ( ServerAcceptanceReceivedEvent::Handler &  handler )

overridevirtual

Adds a ServerAcceptanceReceived Handler which is invoked when the client receives the accept packet from the server.

Parameters

handler

The ServerAcceptanceReceived Handler to add

Implements Multiplayer::IMultiplayer.

AddSessionInitHandler()

void Multiplayer::MultiplayerSystemComponent::AddSessionInitHandler ( SessionInitEvent::Handler &  )

inlineoverridevirtual

Deprecated:

If looking for an event when a multiplayer session is created, use SessionNotificationBus::OnCreateSessionBegin or SessionNotificationBus::OnCreateSessionEnd.

Implements Multiplayer::IMultiplayer.

AddSessionShutdownHandler()

void Multiplayer::MultiplayerSystemComponent::AddSessionShutdownHandler ( SessionShutdownEvent::Handler &  )

inlineoverridevirtual

Deprecated:

If looking for an event when the multiplayer session ends, use SessionNotificationBus::OnDestroySessionBegin or SessionNotificationBus::OnDestroySessionEnd.

Implements Multiplayer::IMultiplayer.

AddVersionMismatchHandler()

void Multiplayer::MultiplayerSystemComponent::AddVersionMismatchHandler ( VersionMismatchEvent::Handler &  handler )

overridevirtual

Adds a VersionMismatchEvent Handler which is invoked whenever two multiplayer endpoints have a version mismatch. For example, the provided handler will be triggered if a client tries connecting to a server that's using a different multiplayer version.

Parameters

handler

The VersionMismatchEvent handler to add

Implements Multiplayer::IMultiplayer.

CompleteClientMigration()

void Multiplayer::MultiplayerSystemComponent::CompleteClientMigration ( uint64_t  temporaryUserIdentifier, AzNetworking::ConnectionId  connectionId, const HostId &  publicHostId, ClientInputId  migratedClientInputId  )

overridevirtual

Completes a client migration event by informing the appropriate client to migrate between hosts.

Parameters

temporaryUserIdentifier	the temporary user identifier used to identify a player across hosts
connectionId	the connection id of the player being migrated
publicHostId	the public address of the new host the client should connect to
migratedClientInputId	the last clientInputId processed prior to migration

Implements Multiplayer::IMultiplayer.

Connect()

bool Multiplayer::MultiplayerSystemComponent::Connect ( const AZStd::string &  remoteAddress, uint16_t  port  )

overridevirtual

Connects to the specified IP as a Client.

Parameters

remoteAddress	The domain or IP to connect to
port	The port to connect to

Returns

if a connection was successfully created

Implements Multiplayer::IMultiplayer.

DumpStats()

void Multiplayer::MultiplayerSystemComponent::DumpStats

(

const AZ::ConsoleCommandContainer &

arguments

)

Console commands.

GetAgentType()

MultiplayerAgentType Multiplayer::MultiplayerSystemComponent::GetAgentType ( ) const

overridevirtual

IMultiplayer interface

Implements Multiplayer::IMultiplayer.

GetCurrentBlendFactor()

float Multiplayer::MultiplayerSystemComponent::GetCurrentBlendFactor ( ) const

overridevirtual

Returns the current blend factor for client side interpolation. This value is only relevant on the client and is used to smooth between host frames

Returns

the current blend factor

Implements Multiplayer::IMultiplayer.

GetCurrentHostTimeMs()

AZ::TimeMs Multiplayer::MultiplayerSystemComponent::GetCurrentHostTimeMs ( ) const

overridevirtual

Returns the current server time in milliseconds. This can be one of three possible values:

1. On the host outside of rewind scope, this will return the latest application elapsed time in ms.
2. On the host within rewind scope, this will return the rewound time in ms.
3. On the client, this will return the most recently replicated server time in ms.

   Returns

   the current server time in milliseconds

Implements Multiplayer::IMultiplayer.

GetNetworkEntityManager()

INetworkEntityManager* Multiplayer::MultiplayerSystemComponent::GetNetworkEntityManager ( )

overridevirtual

Returns the network entity manager instance bound to this multiplayer instance.

Returns

pointer to the network entity manager instance bound to this multiplayer instance

Implements Multiplayer::IMultiplayer.

GetNetworkTime()

INetworkTime* Multiplayer::MultiplayerSystemComponent::GetNetworkTime ( )

overridevirtual

Returns the network time instance bound to this multiplayer instance.

Returns

pointer to the network time instance bound to this multiplayer instance

Implements Multiplayer::IMultiplayer.

GetShouldSpawnNetworkEntities()

bool Multiplayer::MultiplayerSystemComponent::GetShouldSpawnNetworkEntities ( ) const

overridevirtual

Retrieves the current network entity instantiation behaviour.

Returns

boolean true if netbound entities should be auto instantiated, false if not

Implements Multiplayer::IMultiplayer.

InitializeMultiplayer()

void Multiplayer::MultiplayerSystemComponent::InitializeMultiplayer ( MultiplayerAgentType  state )

overridevirtual

Sets the type of this Multiplayer connection and calls any related callback.

Parameters

state

The state of this connection

Implements Multiplayer::IMultiplayer.

OnRootSpawnableReady()

void Multiplayer::MultiplayerSystemComponent::OnRootSpawnableReady ( AZ::Data::Asset< AzFramework::Spawnable >  rootSpawnable, uint32_t  generation  )

override

AzFramework::RootSpawnableNotificationBus::Handler

OnSessionHealthCheck()

bool Multiplayer::MultiplayerSystemComponent::OnSessionHealthCheck ( )

override

SessionNotificationBus::Handler overrides.

OnTick()

void Multiplayer::MultiplayerSystemComponent::OnTick ( float  deltaTime, AZ::ScriptTimePoint  time  )

override

AZ::TickBus::Handler overrides.

RegisterPlayerIdentifierForRejoin()

void Multiplayer::MultiplayerSystemComponent::RegisterPlayerIdentifierForRejoin ( uint64_t  temporaryUserIdentifier, NetEntityId  controlledEntityId  )

overridevirtual

Registers a temp userId to allow a host to look up a players controlled entity in the event of a rejoin or migration event.

Parameters

temporaryUserIdentifier	the temporary user identifier used to identify a player across hosts
controlledEntityId	the controlled entityId of the players autonomous entity

Implements Multiplayer::IMultiplayer.

RequestPlayerJoinSession()

bool Multiplayer::MultiplayerSystemComponent::RequestPlayerJoinSession ( const SessionConnectionConfig &  sessionConnectionConfig )

overridevirtual

ISessionHandlingClientRequests interface

Implements Multiplayer::ISessionHandlingClientRequests.

SendNotifyClientMigrationEvent()

void Multiplayer::MultiplayerSystemComponent::SendNotifyClientMigrationEvent ( AzNetworking::ConnectionId  connectionId, const HostId &  hostId, uint64_t  userIdentifier, ClientInputId  lastClientInputId, NetEntityId  controlledEntityId  )

overridevirtual

Signals a NotifyClientMigrationEvent with the provided parameters.

Parameters

connectionId	the connection id of the client that is migrating
hostId	the host id of the host the client is migrating to
userIdentifier	the user identifier the client will provide the new host to validate identity
lastClientInputId	the last processed clientInputId by the current host
controlledEntityId	the entityId of the clients autonomous entity

Implements Multiplayer::IMultiplayer.

SendNotifyEntityMigrationEvent()

void Multiplayer::MultiplayerSystemComponent::SendNotifyEntityMigrationEvent ( const ConstNetworkEntityHandle &  entityHandle, const HostId &  remoteHostId  )

overridevirtual

Signals a NotifyEntityMigrationEvent with the provided parameters.

Parameters

entityHandle	the network entity handle of the entity being migrated
remoteHostId	the host id of the host the entity is migrating to

Implements Multiplayer::IMultiplayer.

SendReadyForEntityUpdates()

void Multiplayer::MultiplayerSystemComponent::SendReadyForEntityUpdates ( bool  readyForEntityUpdates )

overridevirtual

Sends a packet telling if entity update messages can be sent.

Parameters

readyForEntityUpdates

Ready for entity updates or not

Implements Multiplayer::IMultiplayer.

SetShouldSpawnNetworkEntities()

void Multiplayer::MultiplayerSystemComponent::SetShouldSpawnNetworkEntities ( bool  value )

overridevirtual

Enables or disables automatic instantiation of netbound entities. This setting is controlled by the networking layer and should not be touched If enabled, netbound entities will instantiate as spawnables are loaded into the game world, generally true for the server If disabled, netbound entities will only stream from a host, always true for a client

Parameters

value

boolean value controlling netbound entity instantiation behaviour

Implements Multiplayer::IMultiplayer.

ShouldBlockLevelLoading()

bool Multiplayer::MultiplayerSystemComponent::ShouldBlockLevelLoading ( const char *  levelName )

override

AzFramework::LevelLoadBlockerBus::Handler overrides.

Terminate()

void Multiplayer::MultiplayerSystemComponent::Terminate ( AzNetworking::DisconnectReason  reason )

overridevirtual

Parameters

reason

The reason for terminating connections

Implements Multiplayer::IMultiplayer.

ValidateConnect()

AzNetworking::ConnectResult Multiplayer::MultiplayerSystemComponent::ValidateConnect ( const AzNetworking::IpAddress &  remoteAddress, const AzNetworking::IPacketHeader &  packetHeader, AzNetworking::ISerializer &  serializer  )

override

IConnectionListener interface

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The documentation for this class was generated from the following file:

• Gems/Multiplayer/Code/Source/MultiplayerSystemComponent.h