khanat-code-old/code/ryzom/client/src/cdb_leaf.h

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2010-05-06 00:08:41 +00:00
// Ryzom - MMORPG Framework <http://dev.ryzom.com/projects/ryzom/>
// Copyright (C) 2010 Winch Gate Property Limited
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#ifndef CDB_LEAF_H
#define CDB_LEAF_H
#include "cdb.h"
#include "cdb_branch.h"
#include "nel/misc/time_nl.h"
/**
* Database node which contains a unique property
* \author Stephane Coutelas
* \author Nevrax France
* \date 2002
*/
class CCDBNodeLeaf : public ICDBNode
{
public:
// flush all observers calls for modified nodes
static void flushObserversCalls();
/// Return the value of the property.
inline sint64 getValue64() { return _Property; }
/// Set the value of the property (set '_Changed' flag with 'true').
void setValue64 (sint64 prop);
inline sint32 getValue32() { return *((sint32*)&_Property); }
void setValue32 (sint32 prop);
inline sint16 getValue16() { return *((sint16*)&_Property); }
void setValue16 (sint16 prop);
inline sint8 getValue8() { return *((sint8*)&_Property); }
void setValue8 (sint8 prop);
inline bool getValueBool() { return (_Property!=(sint64)0 ); }
void setValueBool (bool prop);
inline NLMISC::CRGBA getValueRGBA()
{
NLMISC::CRGBA col;
col.R = (uint8)(_Property&0xff);
col.G = (uint8)((_Property>>8)&0xff);
col.B = (uint8)((_Property>>16)&0xff);
col.A = (uint8)((_Property>>24)&0xff);
return col;
}
void setValueRGBA (const NLMISC::CRGBA &color);
/// Return the value of the property before the database change
inline sint64 getOldValue64() { return _oldProperty; }
inline sint32 getOldValue32() { return *((sint32*)&_oldProperty); }
inline sint16 getOldValue16() { return *((sint16*)&_oldProperty); }
inline sint8 getOldValue8() { return *((sint8*)&_oldProperty); }
inline bool getOldValueBool() { return (_oldProperty!=(sint64)0 ); }
/// Return the type of the property.
inline const EPropType &type() const {return _Type;}
/// Set the property Type.
inline void type(const EPropType &t) {_Type = t;}
/// Return 'true' if the property changed since last call.
inline const bool &changed() const {return _Changed;}
/// Set the property flag to known if the property changed since last call.
inline void changed(const bool &c) {_Changed = c;}
/**
* Default constructor
*/
CCDBNodeLeaf(const std::string &name) : ICDBNode(name)
{
_Parent=0;
_Property = 0;
_oldProperty = 0;
_Type = UNKNOWN;
_Changed = false;
_LastChangeGC = 0;
}
/**
* Build the structure of the database from a file
* \param f is the stream
*/
void init( xmlNodePtr node, NLMISC::IProgressCallback &progressCallBack, bool mapBanks=false );
/**
* Get a node
* \param idx is the node index
*/
ICDBNode * getNode( uint16 idx );
/**
* Get a node . Create it if it does not exist yet
* \param id : the CTextId identifying the node
*/
ICDBNode * getNode (const CTextId& id, bool bCreate);
/**
* Get a node index
* \param node is a pointer to the node
*/
virtual bool getNodeIndex( ICDBNode* /* node */, uint& /* index */)
{
return false;
}
/**
* Save a backup of the database
* \param id is the text id of the property/grp
* \param f is the stream
*/
void write( CTextId& id, FILE * f);
/**
* Update the database from a stream coming from the FE
* \param f : the stream.
*/
void readDelta(NLMISC::TGameCycle gc, NLMISC::CBitMemStream & f );
/**
* Return the value of a property (the update flag is set to false)
* \param id is the text id of the property/grp
* \param name is the name of the property
* \return the structure of the property
*/
sint64 getProp( CTextId& id );
/**
* Set the value of a property (the update flag is set to true)
* \param id is the text id of the property/grp
* \param name is the name of the property
* \param value is the value of the property
* \return bool : 'false' if id is too long.
*/
bool setProp( CTextId& id, sint64 value );
/**
* Set the value of a property, only if gc>=_LastChangeGC
*/
bool setPropCheckGC(NLMISC::TGameCycle gc, sint64 value);
/// Reset all leaf data from this point
void resetData(NLMISC::TGameCycle gc, bool forceReset=false);
/**
* Clear the node and his children
*/
void clear();
// the parent node for a branch (NULL by default)
virtual void setParent(CCDBNodeBranch* parent) { _Parent=parent; }
//get the node parent
virtual CCDBNodeBranch *getParent()
{
return _Parent;
}
/// Count the leaves
virtual uint countLeaves() const
{
return 1;
}
/// Find the leaf which count is specified (if found, the returned value is non-null and count is 0)
virtual CCDBNodeLeaf *findLeafAtCount( uint& count )
{
if ( count == 0 )
return this;
else
{
--count;
return NULL;
}
}
/// Debug purpose
virtual void display(const std::string &prefix);
virtual bool isLeaf() const { return true; }
/**
* add an observer to a property
* \param observer : pointer to an observer
* \param id text id identifying the property
* \return false if the node doen t exist
*/
virtual bool addObserver(IPropertyObserver* observer, CTextId& id);
/** remove an obsever
* \param observer : pointer to an observer
* \param id text id identifying the property
* \return false if the node or observer doesn t exist
*/
virtual bool removeObserver(IPropertyObserver* observer, CTextId& id);
/// get the last change GameCycle (server tick) for this value
NLMISC::TGameCycle getLastChangeGC() const {return _LastChangeGC;}
private:
CCDBNodeBranch * _Parent;
/// property value
sint64 _Property;
sint64 _oldProperty;
/// property type
EPropType _Type;
/// true if this value has changed
bool _Changed;
/// gamecycle (servertick) of the last change for this value.
/// change are made in readDelta only for change >= _LastChangeGC
NLMISC::TGameCycle _LastChangeGC;
/// observers to call when the value really change
std::vector<IPropertyObserver*> _Observers;
private:
void notifyObservers();
};
////////////////////
// INLINE MEMBERS //
////////////////////
#endif // CDB_LEAF_H