#include <KGame/KGameNetwork>

Inheritance diagram for KGameNetwork:

[legend]

Signals
void	signalAdminStatusChanged (bool isAdmin)

void	signalClientConnected (quint32 clientID)

void	signalClientDisconnected (quint32 clientID, bool broken)

void	signalConnectionBroken ()

void	signalNetworkErrorMessage (int error, const QString &text)

Public Member Functions
	KGameNetwork (int cookie=42, QObject *parent=nullptr)

bool	connectToServer (const QString &host, quint16 port)

bool	connectToServer (KMessageIO *connection)

int	cookie () const

virtual void	Debug ()

void	disconnect ()

void	electAdmin (quint32 clientID)

quint32	gameId () const

QString	hostName () const

bool	isAdmin () const

bool	isMaster () const

bool	isNetwork () const

bool	isOfferingConnections () const

virtual void	lock ()

KMessageClient *	messageClient () const

KMessageServer *	messageServer () const

virtual void	networkTransmission (QDataStream &, int, quint32, quint32, quint32 clientID)=0

bool	offerConnections (quint16 port)

quint16	port () const

void	sendError (int error, const QByteArray &message, quint32 receiver=0, quint32 sender=0)

bool	sendMessage (const QByteArray &buffer, int msgid, quint32 receiver=0, quint32 sender=0)

bool	sendMessage (const QDataStream &msg, int msgid, quint32 receiver=0, quint32 sender=0)

bool	sendMessage (const QString &msg, int msgid, quint32 receiver=0, quint32 sender=0)

bool	sendMessage (int data, int msgid, quint32 receiver=0, quint32 sender=0)

bool	sendSystemMessage (const QByteArray &buffer, int msgid, quint32 receiver=0, quint32 sender=0)

bool	sendSystemMessage (const QDataStream &msg, int msgid, quint32 receiver=0, quint32 sender=0)

bool	sendSystemMessage (const QString &msg, int msgid, quint32 receiver=0, quint32 sender=0)

bool	sendSystemMessage (int data, int msgid, quint32 receiver=0, quint32 sender=0)

void	setDiscoveryInfo (const QString &type, const QString &name=QString())

void	setMaxClients (int max)

bool	stopServerConnection ()

virtual void	unlock ()

Public Member Functions inherited from QObject
	QObject (QObject *parent)

QBindable< QString >	bindableObjectName ()

bool	blockSignals (bool block)

const QObjectList &	children () const const

QMetaObject::Connection	connect (const QObject sender, const char signal, const char *method, Qt::ConnectionType type) const const

void	deleteLater ()

void	destroyed (QObject *obj)

bool	disconnect (const char signal, const QObject receiver, const char *method) const const

bool	disconnect (const QObject receiver, const char method) const const

void	dumpObjectInfo () const const

void	dumpObjectTree () const const

QList< QByteArray >	dynamicPropertyNames () const const

virtual bool	event (QEvent *e)

virtual bool	eventFilter (QObject watched, QEvent event)

T	findChild (const QString &name, Qt::FindChildOptions options) const const

QList< T >	findChildren (const QRegularExpression &re, Qt::FindChildOptions options) const const

QList< T >	findChildren (const QString &name, Qt::FindChildOptions options) const const

QList< T >	findChildren (Qt::FindChildOptions options) const const

bool	inherits (const char *className) const const

void	installEventFilter (QObject *filterObj)

bool	isQuickItemType () const const

bool	isWidgetType () const const

bool	isWindowType () const const

void	killTimer (int id)

virtual const QMetaObject *	metaObject () const const

void	moveToThread (QThread *targetThread)

QString	objectName () const const

void	objectNameChanged (const QString &objectName)

QObject *	parent () const const

QVariant	property (const char *name) const const

	Q_CLASSINFO (Name, Value)

	Q_EMIT Q_EMIT

	Q_ENUM (...)

	Q_ENUM_NS (...)

	Q_ENUMS (...)

	Q_FLAG (...)

	Q_FLAG_NS (...)

	Q_FLAGS (...)

	Q_GADGET Q_GADGET

	Q_GADGET_EXPORT (EXPORT_MACRO)

	Q_INTERFACES (...)

	Q_INVOKABLE Q_INVOKABLE

	Q_MOC_INCLUDE Q_MOC_INCLUDE

	Q_NAMESPACE Q_NAMESPACE

	Q_NAMESPACE_EXPORT (EXPORT_MACRO)

	Q_OBJECT Q_OBJECT

	Q_PROPERTY (...)

	Q_REVISION Q_REVISION

	Q_SET_OBJECT_NAME (Object)

	Q_SIGNAL Q_SIGNAL

	Q_SIGNALS Q_SIGNALS

	Q_SLOT Q_SLOT

	Q_SLOTS Q_SLOTS

T	qobject_cast (const QObject *object)

T	qobject_cast (QObject *object)

	QT_NO_NARROWING_CONVERSIONS_IN_CONNECT QT_NO_NARROWING_CONVERSIONS_IN_CONNECT

void	removeEventFilter (QObject *obj)

void	setObjectName (const QString &name)

void	setObjectName (QAnyStringView name)

void	setParent (QObject *parent)

bool	setProperty (const char *name, const QVariant &value)

bool	setProperty (const char *name, QVariant &&value)

bool	signalsBlocked () const const

int	startTimer (int interval, Qt::TimerType timerType)

int	startTimer (std::chrono::milliseconds interval, Qt::TimerType timerType)

QThread *	thread () const const

Protected Slots
void	aboutToLoseConnection (quint32 id)

void	receiveNetworkTransmission (const QByteArray &a, quint32 clientID)

void	slotAdminStatusChanged (bool isAdmin)

void	slotResetConnection ()

Protected Member Functions
void	setMaster ()

Protected Member Functions inherited from QObject
virtual void	childEvent (QChildEvent *event)

virtual void	connectNotify (const QMetaMethod &signal)

virtual void	customEvent (QEvent *event)

virtual void	disconnectNotify (const QMetaMethod &signal)

bool	isSignalConnected (const QMetaMethod &signal) const const

int	receivers (const char *signal) const const

QObject *	sender () const const

int	senderSignalIndex () const const

virtual void	timerEvent (QTimerEvent *event)

Additional Inherited Members
Public Types inherited from QObject
typedef	QObjectList

Properties inherited from QObject
	objectName

Static Public Member Functions inherited from QObject
QMetaObject::Connection	connect (const QObject sender, const char signal, const QObject receiver, const char method, Qt::ConnectionType type)

QMetaObject::Connection	connect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method, Qt::ConnectionType type)

QMetaObject::Connection	connect (const QObject sender, PointerToMemberFunction signal, const QObject context, Functor functor, Qt::ConnectionType type)

QMetaObject::Connection	connect (const QObject sender, PointerToMemberFunction signal, const QObject receiver, PointerToMemberFunction method, Qt::ConnectionType type)

QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, Functor functor)

bool	disconnect (const QMetaObject::Connection &connection)

bool	disconnect (const QObject sender, const char signal, const QObject receiver, const char method)

bool	disconnect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method)

bool	disconnect (const QObject sender, PointerToMemberFunction signal, const QObject receiver, PointerToMemberFunction method)

QString	tr (const char sourceText, const char disambiguation, int n)

Detailed Description

The KGameNetwork class is the KGame class with network support.

All other features are the same but they are now network transparent. It is not used directly but only via a KGame object. So you do not really have to bother with this object.

The main KDE game object

Definition at line 38 of file kgamenetwork.h.

Constructor & Destructor Documentation

◆ KGameNetwork()

KGameNetwork::KGameNetwork	(	int	cookie = 42,
		QObject *	parent = nullptr )

explicit

Create a KGameNetwork object.

Definition at line 41 of file kgamenetwork.cpp.

◆ ~KGameNetwork()

KGameNetwork::~KGameNetwork ( )

override

Definition at line 54 of file kgamenetwork.cpp.

Member Function Documentation

◆ aboutToLoseConnection

void KGameNetwork::aboutToLoseConnection ( quint32 id )

protectedslot

Called when the network connection is about to terminate.

Is used to store the network parameter like the game id

Definition at line 315 of file kgamenetwork.cpp.

◆ connectToServer() [1/2]

bool KGameNetwork::connectToServer	(	const QString &	host,
		quint16	port )

Inits a network game as a network CLIENT.

Parameters

host	the host to which we want to connect
port	the port we want to connect to

Returns: true if connected

Definition at line 193 of file kgamenetwork.cpp.

◆ connectToServer() [2/2]

bool KGameNetwork::connectToServer ( KMessageIO * connection )

}

Definition at line 207 of file kgamenetwork.cpp.

◆ cookie()

int KGameNetwork::cookie ( ) const

Application cookie.

this identifies the game application. It help to distinguish between e.g. KPoker and KWin4

Returns: the application cookie

Definition at line 79 of file kgamenetwork.cpp.

◆ Debug()

void KGameNetwork::Debug ( )

virtual

Gives debug output of the game status.

Reimplemented in KGame.

Definition at line 496 of file kgamenetwork.cpp.

◆ disconnect()

void KGameNetwork::disconnect ( )

Disconnect the current connection and establish a new local one.

Definition at line 273 of file kgamenetwork.cpp.

◆ electAdmin()

void KGameNetwork::electAdmin ( quint32 clientID )

If you are the ADMIN of the game you can give the ADMIN status away to another client.

Use this e.g. if you want to quit the game or if you want another client to administrate the game (note that disconnect calls this automatically).

Parameters

clientID the ID of the new ADMIN (note: this is the _client_ID which has nothing to do with the player IDs. See KMessageServer)

Definition at line 327 of file kgamenetwork.cpp.

◆ gameId()

quint32 KGameNetwork::gameId ( ) const

The unique ID of this game.

Returns: int id

Definition at line 67 of file kgamenetwork.cpp.

◆ hostName()

QString KGameNetwork::hostName ( ) const

Returns: The name of the host that we are currently connected to is isNetwork is TRUE and we are not the MASTER, i.e. if connectToServer was called. Otherwise this will return "localhost".

Definition at line 252 of file kgamenetwork.cpp.

◆ isAdmin()

bool KGameNetwork::isAdmin ( ) const

The admin of a game is the one who initializes newly connected clients using negotiateNetworkGame and is allowed to configure the game.

E.g. only the admin is allowed to use KGame::setMaxPlayers.

If one KGame object in the game is MASTER then this client is the admin as well. isMaster and isAdmin differ only if the KMessageServer is running in an own process.

Returns: Whether this client (KGame object) is the admin

Definition at line 89 of file kgamenetwork.cpp.

◆ isMaster()

bool KGameNetwork::isMaster ( ) const

Is this the game MASTER (i.e.

has started theKMessageServer). A game has always exactly one MASTER. This is either a KGame object (i.e. a Client) or an own MessageServer-process. A KGame object that has the MASTER status is always admin.

You probably don't want to use this. It is a mostly internal method which will probably become protected. Better use isAdmin

See also: isAdmin

Returns: Whether this client has started the KMessageServer

Definition at line 84 of file kgamenetwork.cpp.

◆ isNetwork()

bool KGameNetwork::isNetwork ( ) const

Returns: TRUE if this is a network game - i.e. you are either MASTER or connected to a remote MASTER.

Definition at line 62 of file kgamenetwork.cpp.

◆ isOfferingConnections()

bool KGameNetwork::isOfferingConnections ( ) const

Are we still offer offering server connections - only for game MASTER.

Returns: true/false

Definition at line 268 of file kgamenetwork.cpp.

◆ lock()

void KGameNetwork::lock ( )

virtual

You should call this before doing thigs like, e.g.

qApp->processEvents(). Don't forget to call unlock once you are done!

See also: KMessageClient::lock

Definition at line 353 of file kgamenetwork.cpp.

◆ messageClient()

KMessageClient * KGameNetwork::messageClient ( ) const

Don't use this unless you really know what you're doing! You might experience some strange behaviour if you send your messages directly through the KMessageClient!

Returns: a pointer to the KMessageClient used internally to send the messages. You should rather use one of the send functions!

Definition at line 94 of file kgamenetwork.cpp.

◆ messageServer()

KMessageServer * KGameNetwork::messageServer ( ) const

Don't use this unless you really know what you are doing! You might experience some strange behaviour if you use the message server directly!

Returns: a pointer to the message server if this is the MASTER KGame object. Note that it might be possible that no KGame object contains the KMessageServer at all! It might even run stand alone!

Definition at line 99 of file kgamenetwork.cpp.

◆ networkTransmission()

virtual void KGameNetwork::networkTransmission	(	QDataStream &	,
		int	,
		quint32	,
		quint32	,
		quint32	clientID )

pure virtual

Called by ReceiveNetworkTransmission().

Will be overwritten by KGame and handle the incoming message.

Implemented in KGame.

◆ offerConnections()

bool KGameNetwork::offerConnections ( quint16 port )

Inits a network game as network MASTER.

Note that if the KMessageServer is not yet started it will be started here (see setMaster). Any existing connection will be disconnected.

If you already offer connections the port is changed.

Parameters

port	The port on which the service is offered

Returns: true if it worked

Definition at line 163 of file kgamenetwork.cpp.

◆ port()

quint16 KGameNetwork::port ( ) const

Returns: The port we are listening to if offerConnections was called or the port we are connected to if connectToServer was called. Otherwise 0.

Definition at line 240 of file kgamenetwork.cpp.

◆ receiveNetworkTransmission

void KGameNetwork::receiveNetworkTransmission	(	const QByteArray &	a,
		quint32	clientID )

protectedslot

Called by KMessageClient::broadcastReceived() and will check if the message format is valid.

If it is not, it will generate an error (see signalNetworkVersionError and signalNetworkErorrMessage). If it is valid, the pure virtual method networkTransmission() is called. (This one is overwritten in KGame.)

Definition at line 459 of file kgamenetwork.cpp.

◆ sendError()

void KGameNetwork::sendError	(	int	error,
		const QByteArray &	message,
		quint32	receiver = 0,
		quint32	sender = 0 )

Sends a network message.

Parameters

error	The error code
message	The error message - use KGameError
receiver	the KGame / KPlayer this message is for. 0 For all
sender	The KGame / KPlayer this message is from (i.e. you). You probably want to leave this 0, then KGameNetwork will create the correct value for you. You might want to use this if you send a message from a specific player.

Definition at line 449 of file kgamenetwork.cpp.

◆ sendMessage() [1/4]

bool KGameNetwork::sendMessage	(	const QByteArray &	buffer,
		int	msgid,
		quint32	receiver = 0,
		quint32	sender = 0 )

Send a network message msg with a given message ID msgid to all clients.

You want to use this to send a message to the clients.

Note that a message is always sent to ALL clients! This is necessary so that all clients always have the same data and can easily be changed from network to non-network without restarting the game. If you want a specific KGame / KPlayer to react to the message use the receiver and sender parameters. See KGameMessage::calsMessageId

SendMessage differs from sendSystemMessage only by the msgid parameter. sendSystemMessage is thought as a KGame only method while sendMessage is for public use. The msgid parameter will be +=KGameMessage::IdUser and in KGame::signalNetworkData msgid will be -= KGameMessage::IdUser again, so that one can easily distinguish between system and user messages.

Use sendSystemMessage to communicate with KGame (e.g. by adding a player) and sendMessage for your own user message.

Note: a player should send messages through a KGameIO!

Parameters

buffer	the message which will be send. See messages.txt for contents
msgid	an id for this message. See KGameMessage::GameMessageIds
receiver	the KGame / KPlayer this message is for.
sender	The KGame / KPlayer this message is from (i.e. you). You probably want to leave this 0, then KGameNetwork will create the correct value for you. You might want to use this if you send a message from a specific player.

Returns: true if worked

Definition at line 444 of file kgamenetwork.cpp.

◆ sendMessage() [2/4]

bool KGameNetwork::sendMessage	(	const QDataStream &	msg,
		int	msgid,
		quint32	receiver = 0,
		quint32	sender = 0 )

This is an overloaded member function, provided for convenience.

Definition at line 439 of file kgamenetwork.cpp.

◆ sendMessage() [3/4]

bool KGameNetwork::sendMessage	(	const QString &	msg,
		int	msgid,
		quint32	receiver = 0,
		quint32	sender = 0 )

This is an overloaded member function, provided for convenience.

Definition at line 434 of file kgamenetwork.cpp.

◆ sendMessage() [4/4]

bool KGameNetwork::sendMessage	(	int	data,
		int	msgid,
		quint32	receiver = 0,
		quint32	sender = 0 )

This is an overloaded member function, provided for convenience.

Definition at line 429 of file kgamenetwork.cpp.

◆ sendSystemMessage() [1/4]

bool KGameNetwork::sendSystemMessage	(	const QByteArray &	buffer,
		int	msgid,
		quint32	receiver = 0,
		quint32	sender = 0 )

Sends a network message msg with a given msg id msgid to all clients.

Use this to communicate with KGame (e.g. to add a player ot to configure the game - usually not necessary).

For your own messages use sendMessage instead! This is mostly internal!

Parameters

buffer	the message which will be send. See messages.txt for contents
msgid	an id for this message. See KGameMessage::GameMessageIds
receiver	the KGame / KPlayer this message is for.
sender	The KGame / KPlayer this message is from (i.e. you). You probably want to leave this 0, then KGameNetwork will create the correct value for you. You might want to use this if you send a message from a specific player.

Returns: true if worked

Definition at line 390 of file kgamenetwork.cpp.

◆ sendSystemMessage() [2/4]

bool KGameNetwork::sendSystemMessage	(	const QDataStream &	msg,
		int	msgid,
		quint32	receiver = 0,
		quint32	sender = 0 )

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Definition at line 385 of file kgamenetwork.cpp.

◆ sendSystemMessage() [3/4]

bool KGameNetwork::sendSystemMessage	(	const QString &	msg,
		int	msgid,
		quint32	receiver = 0,
		quint32	sender = 0 )

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Definition at line 377 of file kgamenetwork.cpp.

◆ sendSystemMessage() [4/4]

bool KGameNetwork::sendSystemMessage	(	int	data,
		int	msgid,
		quint32	receiver = 0,
		quint32	sender = 0 )

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Definition at line 369 of file kgamenetwork.cpp.

◆ setDiscoveryInfo()

void KGameNetwork::setDiscoveryInfo	(	const QString &	type,
		const QString &	name = QString() )

Definition at line 133 of file kgamenetwork.cpp.

◆ setMaster()

void KGameNetwork::setMaster ( )

protected

Start a KMessageServer object and use it as the MASTER of the game. Note that you must not call this if there is already another master running!

Definition at line 105 of file kgamenetwork.cpp.

◆ setMaxClients()

void KGameNetwork::setMaxClients ( int max )

Changes the maximal connection number of the KMessageServer to max.

-1 Means infinite connections are possible. Note that existing connections are not affected, so even if you set this to 0 in a running game no client is being disconnected. You can call this only if you are the ADMIN!

See also: KMessageServer::setMaxClients

Parameters

max	The maximal number of connections possible.

Definition at line 340 of file kgamenetwork.cpp.

◆ signalAdminStatusChanged

void KGameNetwork::signalAdminStatusChanged ( bool isAdmin )

signal

This client gets or loses the admin status.

See also: KMessageClient::adminStatusChanged

Parameters

isAdmin True if this client gets the ADMIN status otherwise FALSE

◆ signalClientConnected

void KGameNetwork::signalClientConnected ( quint32 clientID )

signal

This signal is emitted whenever the KMessageServer sends us a message that a new client connected.

KGame uses this to call KGame::negotiateNetworkGame for the newly connected client if we are admin (see isAdmin)

See also: KMessageClient::eventClientConnected

Parameters

clientID the ID of the newly connected client

◆ signalClientDisconnected

void KGameNetwork::signalClientDisconnected	(	quint32	clientID,
		bool	broken )

signal

This signal is emitted whenever the KMessageServer sends us a message that a connection to a client was detached.

The second parameter can be used to distinguish between network errors or removing on purpose.

See also: KMessageClient::eventClientDisconnected

Parameters

clientID	the client that has disconnected
broken	true if the connection was lost because of a network error, false if the connection was closed by the message server admin.

◆ signalConnectionBroken

void KGameNetwork::signalConnectionBroken ( )

signal

Our connection to the KMessageServer has broken.

See KMessageClient::connectionBroken

◆ signalNetworkErrorMessage

void KGameNetwork::signalNetworkErrorMessage	(	int	error,
		const QString &	text )

signal

A network error occurred.

Parameters

error	the error code
text	the error text

◆ slotAdminStatusChanged

void KGameNetwork::slotAdminStatusChanged ( bool isAdmin )

protectedslot

This KGame object receives or loses the admin status.

Parameters

isAdmin Whether we are admin or not

Definition at line 489 of file kgamenetwork.cpp.

◆ slotResetConnection

void KGameNetwork::slotResetConnection ( )

protectedslot

Called when the network connection is terminated.

Used to clean up the disconnect parameter

Definition at line 321 of file kgamenetwork.cpp.

◆ stopServerConnection()

bool KGameNetwork::stopServerConnection ( )

Stops offering server connections - only for game MASTER.

Returns: true

Definition at line 257 of file kgamenetwork.cpp.

◆ unlock()

void KGameNetwork::unlock ( )

virtual

See also: KMessageClient::unlock

Definition at line 360 of file kgamenetwork.cpp.

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

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KGameNetwork

Signals

Public Member Functions

Protected Slots

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ KGameNetwork()

◆ ~KGameNetwork()

Member Function Documentation

◆ aboutToLoseConnection

◆ connectToServer() [1/2]

◆ connectToServer() [2/2]

◆ cookie()

◆ Debug()

◆ disconnect()

◆ electAdmin()

◆ gameId()

◆ hostName()

◆ isAdmin()

◆ isMaster()

◆ isNetwork()

◆ isOfferingConnections()

◆ lock()

◆ messageClient()

◆ messageServer()

◆ networkTransmission()

◆ offerConnections()

◆ port()

◆ receiveNetworkTransmission

◆ sendError()

◆ sendMessage() [1/4]

◆ sendMessage() [2/4]

◆ sendMessage() [3/4]

◆ sendMessage() [4/4]

◆ sendSystemMessage() [1/4]

◆ sendSystemMessage() [2/4]

◆ sendSystemMessage() [3/4]

◆ sendSystemMessage() [4/4]

◆ setDiscoveryInfo()

◆ setMaster()

◆ setMaxClients()

◆ signalAdminStatusChanged

◆ signalClientConnected

◆ signalClientDisconnected

◆ signalConnectionBroken

◆ signalNetworkErrorMessage

◆ slotAdminStatusChanged

◆ slotResetConnection

◆ stopServerConnection()

◆ unlock()