KGamePropertyBase Class Reference

#include <KGame/KGameProperty>

Inheritance diagram for KGamePropertyBase:

Public Types
enum	PropertyCommandIds {   CmdLock = 1 , CmdAt = 51 , CmdResize = 52 , CmdFill = 53 ,   CmdSort = 54 , CmdInsert = 61 , CmdAppend = 62 , CmdRemove = 63 ,   CmdClear = 64 }
enum	PropertyDataIds {   IdGroup = 1 , IdUserId = 2 , IdAsyncInput = 3 , IdTurn = 4 ,   IdName = 5 , IdGameStatus = 6 , IdMaxPlayer = 7 , IdMinPlayer = 8 ,   IdGrabInput = 16 , IdReleaseInput = 17 , IdCommand , IdUser = 256 ,   IdAutomatic = 0x7000 }
enum	PropertyPolicy { PolicyUndefined = 0 , PolicyClean = 1 , PolicyDirty = 2 , PolicyLocal = 3 }

Public Member Functions
	KGamePropertyBase ()
	KGamePropertyBase (int id, KGame *parent)
	KGamePropertyBase (int id, KGamePropertyHandler *owner)
	KGamePropertyBase (int id, KPlayer *parent)
virtual void	command (QDataStream &stream, int msgid, bool isSender=false)
int	id () const
bool	isDirty () const
bool	isEmittingSignal () const
bool	isLocked () const
bool	isOptimized () const
virtual void	load (QDataStream &s)=0
bool	lock ()
PropertyPolicy	policy () const
int	registerData (int id, KGame *owner, const QString &name=QString())
int	registerData (int id, KGamePropertyHandler *owner, const QString &name=QString())
int	registerData (int id, KGamePropertyHandler *owner, PropertyPolicy p, const QString &name=QString())
int	registerData (int id, KPlayer *owner, const QString &name=QString())
int	registerData (KGamePropertyHandler *owner, PropertyPolicy p=PolicyUndefined, const QString &name=QString())
virtual void	save (QDataStream &s)=0
void	setEmittingSignal (bool p)
void	setOptimized (bool p)
void	setPolicy (PropertyPolicy p)
virtual const type_info *	typeinfo ()
bool	unlock (bool force=false)
void	unregisterData ()

Protected Member Functions
void	emitSignal ()
bool	sendProperty ()
bool	sendProperty (const QByteArray &b)
void	setDirty (bool d)
void	setLock (bool l)

Protected Attributes
union KGamePropertyBase::Flags	mFlags
KGamePropertyHandler *	mOwner

Detailed Description

Base class of KGameProperty.

The KGamePropertyBase class is the base class of KGameProperty. See KGameProperty for further information.

Author

Andreas Beckermann b_man.nosp@m.n@gm.nosp@m.x.de

Definition at line 36 of file kgameproperty.h.

Member Enumeration Documentation

PropertyCommandIds

enum KGamePropertyBase::PropertyCommandIds

Commands for advanced properties (qint8)

Definition at line 65 of file kgameproperty.h.

PropertyDataIds

enum KGamePropertyBase::PropertyDataIds

Definition at line 39 of file kgameproperty.h.

PropertyPolicy

enum KGamePropertyBase::PropertyPolicy

The policy of the property.

This can be PolicyClean (setValue uses send), PolicyDirty (setValue uses changeValue) or PolicyLocal (setValue uses setLocal).

A "clean" policy means that the property is always the same on every client. This is achieved by calling send which actually changes the value only when the message from the MessageServer is received.

A "dirty" policy means that as soon as setValue is called the property is changed immediately. And additionally sent over network. This can sometimes lead to bugs as the other clients do not immediately have the same value. For more information see changeValue.

PolicyLocal means that a KGameProperty behaves like ever "normal" variable. Whenever setValue is called (e.g. using "=") the value of the property is changes immediately without sending it over network. You might want to use this if you are sure that all clients set the property at the same time.

Definition at line 103 of file kgameproperty.h.

Constructor & Destructor Documentation

KGamePropertyBase() [1/4]

KGamePropertyBase::KGamePropertyBase	(	int	id,
		KGamePropertyHandler *	owner )

Constructs a KGamePropertyBase object and calls registerData.

Parameters

id	The id of this property. MUST be UNIQUE! Used to send and receive changes in the property of the player automatically via network.
owner	The owner of the object. Must be a KGamePropertyHandler which manages the changes made to this object, i.e. which will send the new data

Definition at line 32 of file kgameproperty.cpp.

KGamePropertyBase() [2/4]

KGamePropertyBase::KGamePropertyBase	(	int	id,
		KGame *	parent )

Definition at line 20 of file kgameproperty.cpp.

KGamePropertyBase() [3/4]

KGamePropertyBase::KGamePropertyBase	(	int	id,
		KPlayer *	parent )

Definition at line 26 of file kgameproperty.cpp.

KGamePropertyBase() [4/4]

KGamePropertyBase::KGamePropertyBase

(

)

Creates a KGamePropertyBase object without an owner.

Remember to call registerData!

Definition at line 38 of file kgameproperty.cpp.

~KGamePropertyBase()

KGamePropertyBase::~KGamePropertyBase ( )

virtual

Definition at line 43 of file kgameproperty.cpp.

Member Function Documentation

command()

void KGamePropertyBase::command ( QDataStream & stream, int msgid, bool isSender = false )

virtual

send a command to advanced properties like arrays

Parameters

stream	The stream containing the data of the command
msgid	The ID of the command - see PropertyCommandIds
isSender	whether this client is also the sender of the command

Definition at line 191 of file kgameproperty.cpp.

emitSignal()

void KGamePropertyBase::emitSignal ( )

protected

Causes the parent object to emit a signal on value change.

Definition at line 181 of file kgameproperty.cpp.

id()

int KGamePropertyBase::id ( ) const

inline

Returns

The id of this property

Definition at line 254 of file kgameproperty.h.

isDirty()

bool KGamePropertyBase::isDirty ( ) const

inline

Returns

Whether this property is "dirty". See also setDirty

Definition at line 190 of file kgameproperty.h.

isEmittingSignal()

bool KGamePropertyBase::isEmittingSignal ( ) const

inline

See also setEmittingSignal.

Returns

Whether this property emits a signal on value change

Definition at line 164 of file kgameproperty.h.

isLocked()

bool KGamePropertyBase::isLocked ( ) const

inline

A locked property can only be changed by the player who has set the lock.

See also setLocked

Returns

Whether this property is currently locked.

Definition at line 200 of file kgameproperty.h.

isOptimized()

bool KGamePropertyBase::isOptimized ( ) const

inline

See also setOptimize.

Returns

Whether the property optimizes access (signals,network traffic)

Definition at line 182 of file kgameproperty.h.

load()

virtual void KGamePropertyBase::load ( QDataStream & s )

pure virtual

This will read the value of this property from the stream.

You MUST overwrite this method in order to use this class

Parameters

s	The stream to read from

Implemented in KGameProperty< type >, KGameProperty< int >, KGameProperty< qint8 >, KGameProperty< QString >, and KGameProperty< unsigned int >.

lock()

bool KGamePropertyBase::lock

(

)

A locked property can only be changed by the player who has set the lock.

You can only call this if isLocked is false. A message is sent over network so that the property is locked for all players except you.

Returns

returns false if the property can not be locked, i.e. it is already locked

Definition at line 148 of file kgameproperty.cpp.

policy()

PropertyPolicy KGamePropertyBase::policy ( ) const

inline

Returns

The default policy of the property

Definition at line 145 of file kgameproperty.h.

registerData() [1/5]

int KGamePropertyBase::registerData	(	int	id,
		KGame *	owner,
		const QString &	name = QString() )

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 67 of file kgameproperty.cpp.

registerData() [2/5]

int KGamePropertyBase::registerData	(	int	id,
		KGamePropertyHandler *	owner,
		const QString &	name = QString() )

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 82 of file kgameproperty.cpp.

registerData() [3/5]

int KGamePropertyBase::registerData	(	int	id,
		KGamePropertyHandler *	owner,
		PropertyPolicy	p,
		const QString &	name = QString() )

You have to register a KGamePropertyBase before you can use it.

You MUST call this before you can use KGamePropertyBase!

Parameters

id	the id of this KGamePropertyBase object. The id MUST be unique, i.e. you cannot have two properties with the same id for one player, although (currently) nothing prevents you from doing so. But you will get strange results!
owner	The owner of this data. This will send the data using KPropertyHandler::sendProperty whenever you call send
p	If not 0 you can set the policy of the property here
name	if not 0 you can assign a name to this property

Definition at line 87 of file kgameproperty.cpp.

registerData() [4/5]

int KGamePropertyBase::registerData	(	int	id,
		KPlayer *	owner,
		const QString &	name = QString() )

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 72 of file kgameproperty.cpp.

registerData() [5/5]

int KGamePropertyBase::registerData	(	KGamePropertyHandler *	owner,
		PropertyPolicy	p = PolicyUndefined,
		const QString &	name = QString() )

This is an overloaded member function, provided for convenience.

It differs from the above function only in what argument(s) it accepts. In particular you can use this function to create properties which will have an automatic id assigned. The new id is returned.

Definition at line 77 of file kgameproperty.cpp.

save()

virtual void KGamePropertyBase::save ( QDataStream & s )

pure virtual

Write the value into a stream.

MUST be overwritten

Implemented in KGameProperty< type >, KGameProperty< int >, KGameProperty< qint8 >, KGameProperty< QString >, and KGameProperty< unsigned int >.

sendProperty() [1/2]

bool KGamePropertyBase::sendProperty ( )

protected

Forward the data to the owner of this property which then sends it over network.

save is used to store the data into a stream so you have to make sure that function is working properly if you implement your own property!

Note: this sends the current property!

Might be obsolete - KGamePropertyArray still uses it. Is this a bug or correct?

Definition at line 120 of file kgameproperty.cpp.

sendProperty() [2/2]

bool KGamePropertyBase::sendProperty ( const QByteArray & b )

protected

Forward the data to the owner of this property which then sends it over network.

save is used to store the data into a stream so you have to make sure that function is working properly if you implement your own property!

This function is used by send to send the data over network. This does not send the current value but the explicitly given value.

Returns

TRUE if the message could be sent successfully, otherwise FALSE

Definition at line 134 of file kgameproperty.cpp.

setDirty()

void KGamePropertyBase::setDirty ( bool d )

inlineprotected

Sets the "dirty" flag of the property.

If a property is "dirty" i.e. KGameProperty::setLocal has been called there is no guarantee that all clients share the same value. You have to ensure this yourself e.g. by calling KGameProperty::setLocal on every client. You can also ignore the dirty flag and continue working withe the property depending on your situation.

Definition at line 336 of file kgameproperty.h.

setEmittingSignal()

void KGamePropertyBase::setEmittingSignal ( bool p )

inline

Sets this property to emit a signal on value changed.

As the properties do not inherit QObject for optimization this signal is emitted via the KPlayer or KGame object

Definition at line 155 of file kgameproperty.h.

setLock()

void KGamePropertyBase::setLock ( bool l )

protected

A locked property can only be changed by the player who has set the lock.

You can only call this if isLocked is false. A message is sent over network so that the property is locked for all players except you. Usually you use lock and unlock to access this property

Definition at line 166 of file kgameproperty.cpp.

setOptimized()

void KGamePropertyBase::setOptimized ( bool p )

inline

Sets this property to try to optimize signal and network handling by not sending it out when the property value is not changed.

Definition at line 173 of file kgameproperty.h.

setPolicy()

void KGamePropertyBase::setPolicy ( PropertyPolicy p )

inline

Changes the consistency policy of a property.

The PropertyPolicy is one of PolicyClean (defaulz), PolicyDirty or PolicyLocal.

It is up to you to decide how you want to work.

Definition at line 137 of file kgameproperty.h.

typeinfo()

virtual const type_info * KGamePropertyBase::typeinfo ( )

inlinevirtual

Returns

a type_info of the data this property contains.

Reimplemented in KGameProperty< type >, KGameProperty< int >, KGameProperty< qint8 >, KGameProperty< QString >, and KGameProperty< unsigned int >.

Definition at line 262 of file kgameproperty.h.

unlock()

bool KGamePropertyBase::unlock

(

bool

force = false

)

A locked property can only be changed by the player who has set the lock.

You can only call this if isLocked is false. A message is sent over network so that the property is locked for all players except you.

Returns

returns false if the property can not be locked, i.e. it is already locked

Definition at line 157 of file kgameproperty.cpp.

unregisterData()

void KGamePropertyBase::unregisterData

(

)

Definition at line 111 of file kgameproperty.cpp.

Member Data Documentation

mOwner

KGamePropertyHandler* KGamePropertyBase::mOwner

protected

Definition at line 375 of file kgameproperty.h.

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

• kgameproperty.h
• kgameproperty.cpp