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/*
Minetest
Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef NODEMETADATA_HEADER
#define NODEMETADATA_HEADER
#include "irr_v3d.h"
#include <string>
#include <iostream>
#include <map>
/*
NodeMetadata stores arbitary amounts of data for special blocks.
Used for furnaces, chests and signs.
There are two interaction methods: inventory menu and text input.
Only one can be used for a single metadata, thus only inventory OR
text input should exist in a metadata.
*/
class Inventory;
class IGameDef;
class NodeMetadata
{
public:
NodeMetadata(IGameDef *gamedef);
~NodeMetadata();
void serialize(std::ostream &os) const;
void deSerialize(std::istream &is);
void clear();
// Generic key/value store
std::string getString(const std::string &name) const
{
std::map<std::string, std::string>::const_iterator i;
i = m_stringvars.find(name);
if(i == m_stringvars.end())
return "";
return resolveString(i->second);
}
void setString(const std::string &name, const std::string &var)
{
if(var.empty())
m_stringvars.erase(name);
else
m_stringvars[name] = var;
}
// support variable names in values
std::string resolveString(const std::string &str) const
{
if(str.substr(0,2) == "${" && str[str.length()-1] == '}')
return resolveString(getString(str.substr(2,str.length()-3)));
return str;
}
std::map<std::string, std::string> getStrings() const
{
return m_stringvars;
}
// The inventory
Inventory* getInventory()
{
return m_inventory;
}
private:
std::map<std::string, std::string> m_stringvars;
Inventory *m_inventory;
};
/*
List of metadata of all the nodes of a block
*/
class NodeMetadataList
{
public:
~NodeMetadataList();
void serialize(std::ostream &os) const;
void deSerialize(std::istream &is, IGameDef *gamedef);
// Get pointer to data
NodeMetadata* get(v3s16 p);
// Deletes data
void remove(v3s16 p);
// Deletes old data and sets a new one
void set(v3s16 p, NodeMetadata *d);
// Deletes all
void clear();
private:
std::map<v3s16, NodeMetadata*> m_data;
};
#endif
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