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Perttu Ahola
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204
src/nodemetadata.cpp
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204
src/nodemetadata.cpp
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/*
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Minetest-c55
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Copyright (C) 2010-2011 celeron55, Perttu Ahola <celeron55@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "nodemetadata.h"
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#include "utility.h"
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#include "mapnode.h"
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#include "exceptions.h"
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/*
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NodeMetadata
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*/
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core::map<u16, NodeMetadata::Factory> NodeMetadata::m_types;
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NodeMetadata::NodeMetadata()
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{
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}
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NodeMetadata::~NodeMetadata()
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{
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}
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NodeMetadata* NodeMetadata::deSerialize(std::istream &is)
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{
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u8 buf[2];
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is.read((char*)buf, 2);
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s16 id = readS16(buf);
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core::map<u16, Factory>::Node *n;
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n = m_types.find(id);
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if(n == NULL)
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{
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dstream<<"NodeMetadata(): No factory for typeId="<<id<<std::endl;
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throw SerializationError("Unknown metadata id");
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}
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Factory f = n->getValue();
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NodeMetadata *meta = (*f)(is);
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return meta;
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}
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void NodeMetadata::serialize(std::ostream &os)
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{
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u8 buf[2];
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writeU16(buf, typeId());
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os.write((char*)buf, 2);
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serializeBody(os);
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}
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void NodeMetadata::registerType(u16 id, Factory f)
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{
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core::map<u16, Factory>::Node *n;
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n = m_types.find(id);
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if(n)
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return;
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m_types.insert(id, f);
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}
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/*
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SignNodeMetadata
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*/
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SignNodeMetadata::SignNodeMetadata(std::string text):
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m_text(text)
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{
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NodeMetadata::registerType(typeId(), create);
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}
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u16 SignNodeMetadata::typeId() const
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{
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return CONTENT_SIGN_WALL;
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}
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NodeMetadata* SignNodeMetadata::create(std::istream &is)
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{
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std::string text = deSerializeString(is);
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return new SignNodeMetadata(text);
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}
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NodeMetadata* SignNodeMetadata::clone()
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{
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return new SignNodeMetadata(m_text);
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}
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void SignNodeMetadata::serializeBody(std::ostream &os)
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{
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os<<serializeString(m_text);
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}
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std::string SignNodeMetadata::infoText()
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{
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return std::string("\"")+m_text+"\"";
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}
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/*
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NodeMetadatalist
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*/
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void NodeMetadataList::serialize(std::ostream &os)
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{
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u8 buf[6];
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u16 count = m_data.size();
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writeU16(buf, count);
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os.write((char*)buf, 2);
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for(core::map<v3s16, NodeMetadata*>::Iterator
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i = m_data.getIterator();
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i.atEnd()==false; i++)
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{
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v3s16 p = i.getNode()->getKey();
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NodeMetadata *data = i.getNode()->getValue();
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u16 p16 = p.Z*MAP_BLOCKSIZE*MAP_BLOCKSIZE + p.Y*MAP_BLOCKSIZE + p.X;
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writeU16(buf, p16);
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os.write((char*)buf, 2);
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data->serialize(os);
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}
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}
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void NodeMetadataList::deSerialize(std::istream &is)
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{
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m_data.clear();
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u8 buf[6];
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is.read((char*)buf, 2);
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u16 count = readU16(buf);
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for(u16 i=0; i<count; i++)
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{
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is.read((char*)buf, 2);
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u16 p16 = readU16(buf);
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v3s16 p(0,0,0);
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p.Z += p16 / MAP_BLOCKSIZE / MAP_BLOCKSIZE;
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p16 -= p.Z * MAP_BLOCKSIZE * MAP_BLOCKSIZE;
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p.Y += p16 / MAP_BLOCKSIZE;
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p16 -= p.Y * MAP_BLOCKSIZE;
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p.X += p16;
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if(m_data.find(p))
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{
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dstream<<"ERROR: NodeMetadataList::deSerialize(): "
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<<"already set data at position"
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<<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
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<<std::endl;
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throw SerializationError("NodeMetadataList::deSerialize()");
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}
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NodeMetadata *data = NodeMetadata::deSerialize(is);
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m_data.insert(p, data);
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}
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}
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NodeMetadataList::~NodeMetadataList()
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{
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for(core::map<v3s16, NodeMetadata*>::Iterator
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i = m_data.getIterator();
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i.atEnd()==false; i++)
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{
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delete i.getNode()->getValue();
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}
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}
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NodeMetadata* NodeMetadataList::get(v3s16 p)
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{
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core::map<v3s16, NodeMetadata*>::Node *n;
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n = m_data.find(p);
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if(n == NULL)
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return NULL;
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return n->getValue();
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}
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void NodeMetadataList::remove(v3s16 p)
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{
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NodeMetadata *olddata = get(p);
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if(olddata)
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{
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delete olddata;
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m_data.remove(p);
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}
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}
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void NodeMetadataList::set(v3s16 p, NodeMetadata *d)
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{
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remove(p);
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m_data.insert(p, d);
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}
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101
src/nodemetadata.h
Normal file
101
src/nodemetadata.h
Normal file
@ -0,0 +1,101 @@
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/*
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Minetest-c55
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Copyright (C) 2010-2011 celeron55, Perttu Ahola <celeron55@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef NODEMETADATA_HEADER
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#define NODEMETADATA_HEADER
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#include "common_irrlicht.h"
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#include <string>
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#include <iostream>
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/*
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Used for storing:
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Oven:
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- Item that is being burned
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- Burning time
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- Item stack that is being heated
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- Result item stack
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Sign:
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- Text
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*/
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class NodeMetadata
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{
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public:
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typedef NodeMetadata* (*Factory)(std::istream&);
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NodeMetadata();
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virtual ~NodeMetadata();
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static NodeMetadata* deSerialize(std::istream &is);
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void serialize(std::ostream &os);
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// This usually is the CONTENT_ value
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virtual u16 typeId() const = 0;
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virtual NodeMetadata* clone() = 0;
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virtual void serializeBody(std::ostream &os) = 0;
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virtual std::string infoText() { return "<todo: remove this text>"; }
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protected:
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static void registerType(u16 id, Factory f);
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private:
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static core::map<u16, Factory> m_types;
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};
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class SignNodeMetadata : public NodeMetadata
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{
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public:
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SignNodeMetadata(std::string text);
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//~SignNodeMetadata();
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virtual u16 typeId() const;
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static NodeMetadata* create(std::istream &is);
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virtual NodeMetadata* clone();
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virtual void serializeBody(std::ostream &os);
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virtual std::string infoText();
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std::string getText(){ return m_text; }
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void setText(std::string t){ m_text = t; }
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private:
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std::string m_text;
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};
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class NodeMetadataList
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{
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public:
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~NodeMetadataList();
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void serialize(std::ostream &os);
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void deSerialize(std::istream &is);
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// Get pointer to data
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NodeMetadata* get(v3s16 p);
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// Deletes data
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void remove(v3s16 p);
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// Deletes old data and sets a new one
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void set(v3s16 p, NodeMetadata *d);
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private:
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core::map<v3s16, NodeMetadata*> m_data;
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};
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#endif
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