2 files changed, 305 insertions, 0 deletions
diff --git a/src/nodemetadata.cpp b/src/nodemetadata.cpp
new file mode 100644
index 000000000..775b59b24
--- /dev/null
+++ b/src/nodemetadata.cpp
@@ -0,0 +1,204 @@
+/*
+Minetest-c55
+Copyright (C) 2010-2011 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 General Public License as published by
+the Free Software Foundation; either version 2 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 General Public License for more details.
+
+You should have received a copy of the GNU 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.
+*/
+
+#include "nodemetadata.h"
+#include "utility.h"
+#include "mapnode.h"
+#include "exceptions.h"
+
+/*
+	NodeMetadata
+*/
+
+core::map<u16, NodeMetadata::Factory> NodeMetadata::m_types;
+
+NodeMetadata::NodeMetadata()
+{
+}
+
+NodeMetadata::~NodeMetadata()
+{
+}
+
+NodeMetadata* NodeMetadata::deSerialize(std::istream &is)
+{
+	u8 buf[2];
+	is.read((char*)buf, 2);
+	s16 id = readS16(buf);
+
+	core::map<u16, Factory>::Node *n;
+	n = m_types.find(id);
+	if(n == NULL)
+	{
+		dstream<<"NodeMetadata(): No factory for typeId="<<id<<std::endl;
+		throw SerializationError("Unknown metadata id");
+	}
+	
+	Factory f = n->getValue();
+	NodeMetadata *meta = (*f)(is);
+	return meta;
+}
+
+void NodeMetadata::serialize(std::ostream &os)
+{
+	u8 buf[2];
+	writeU16(buf, typeId());
+	os.write((char*)buf, 2);
+
+	serializeBody(os);
+}
+
+void NodeMetadata::registerType(u16 id, Factory f)
+{
+	core::map<u16, Factory>::Node *n;
+	n = m_types.find(id);
+	if(n)
+		return;
+	m_types.insert(id, f);
+}
+
+/*
+	SignNodeMetadata
+*/
+
+SignNodeMetadata::SignNodeMetadata(std::string text):
+	m_text(text)
+{
+	NodeMetadata::registerType(typeId(), create);
+}
+u16 SignNodeMetadata::typeId() const
+{
+	return CONTENT_SIGN_WALL;
+}
+NodeMetadata* SignNodeMetadata::create(std::istream &is)
+{
+	std::string text = deSerializeString(is);
+	return new SignNodeMetadata(text);
+}
+NodeMetadata* SignNodeMetadata::clone()
+{
+	return new SignNodeMetadata(m_text);
+}
+void SignNodeMetadata::serializeBody(std::ostream &os)
+{
+	os<<serializeString(m_text);
+}
+std::string SignNodeMetadata::infoText()
+{
+	return std::string("\"")+m_text+"\"";
+}
+
+/*
+	NodeMetadatalist
+*/
+
+void NodeMetadataList::serialize(std::ostream &os)
+{
+	u8 buf[6];
+	
+	u16 count = m_data.size();
+	writeU16(buf, count);
+	os.write((char*)buf, 2);
+
+	for(core::map<v3s16, NodeMetadata*>::Iterator
+			i = m_data.getIterator();
+			i.atEnd()==false; i++)
+	{
+		v3s16 p = i.getNode()->getKey();
+		NodeMetadata *data = i.getNode()->getValue();
+		
+		u16 p16 = p.Z*MAP_BLOCKSIZE*MAP_BLOCKSIZE + p.Y*MAP_BLOCKSIZE + p.X;
+		writeU16(buf, p16);
+		os.write((char*)buf, 2);
+
+		data->serialize(os);
+	}
+	
+}
+void NodeMetadataList::deSerialize(std::istream &is)
+{
+	m_data.clear();
+
+	u8 buf[6];
+	
+	is.read((char*)buf, 2);
+	u16 count = readU16(buf);
+	
+	for(u16 i=0; i<count; i++)
+	{
+		is.read((char*)buf, 2);
+		u16 p16 = readU16(buf);
+
+		v3s16 p(0,0,0);
+		p.Z += p16 / MAP_BLOCKSIZE / MAP_BLOCKSIZE;
+		p16 -= p.Z * MAP_BLOCKSIZE * MAP_BLOCKSIZE;
+		p.Y += p16 / MAP_BLOCKSIZE;
+		p16 -= p.Y * MAP_BLOCKSIZE;
+		p.X += p16;
+		
+		if(m_data.find(p))
+		{
+			dstream<<"ERROR: NodeMetadataList::deSerialize(): "
+					<<"already set data at position"
+					<<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
+					<<std::endl;
+			throw SerializationError("NodeMetadataList::deSerialize()");
+		}
+
+		NodeMetadata *data = NodeMetadata::deSerialize(is);
+		
+		m_data.insert(p, data);
+	}
+}
+	
+NodeMetadataList::~NodeMetadataList()
+{
+	for(core::map<v3s16, NodeMetadata*>::Iterator
+			i = m_data.getIterator();
+			i.atEnd()==false; i++)
+	{
+		delete i.getNode()->getValue();
+	}
+}
+
+NodeMetadata* NodeMetadataList::get(v3s16 p)
+{
+	core::map<v3s16, NodeMetadata*>::Node *n;
+	n = m_data.find(p);
+	if(n == NULL)
+		return NULL;
+	return n->getValue();
+}
+
+void NodeMetadataList::remove(v3s16 p)
+{
+	NodeMetadata *olddata = get(p);
+	if(olddata)
+	{
+		delete olddata;
+		m_data.remove(p);
+	}
+}
+
+void NodeMetadataList::set(v3s16 p, NodeMetadata *d)
+{
+	remove(p);
+	m_data.insert(p, d);
+}
+
diff --git a/src/nodemetadata.h b/src/nodemetadata.h
new file mode 100644
index 000000000..aa2e0196c
--- /dev/null
+++ b/src/nodemetadata.h
@@ -0,0 +1,101 @@
+/*
+Minetest-c55
+Copyright (C) 2010-2011 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 General Public License as published by
+the Free Software Foundation; either version 2 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 General Public License for more details.
+
+You should have received a copy of the GNU 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 "common_irrlicht.h"
+#include <string>
+#include <iostream>
+
+/*
+	Used for storing:
+
+	Oven:
+		- Item that is being burned
+		- Burning time
+		- Item stack that is being heated
+		- Result item stack
+	
+	Sign:
+		- Text
+*/
+
+class NodeMetadata
+{
+public:
+	typedef NodeMetadata* (*Factory)(std::istream&);
+
+	NodeMetadata();
+	virtual ~NodeMetadata();
+	
+	static NodeMetadata* deSerialize(std::istream &is);
+	void serialize(std::ostream &os);
+	
+	// This usually is the CONTENT_ value
+	virtual u16 typeId() const = 0;
+	virtual NodeMetadata* clone() = 0;
+	virtual void serializeBody(std::ostream &os) = 0;
+	virtual std::string infoText() { return "<todo: remove this text>"; }
+
+protected:
+	static void registerType(u16 id, Factory f);
+private:
+	static core::map<u16, Factory> m_types;
+};
+
+class SignNodeMetadata : public NodeMetadata
+{
+public:
+	SignNodeMetadata(std::string text);
+	//~SignNodeMetadata();
+	
+	virtual u16 typeId() const;
+	static NodeMetadata* create(std::istream &is);
+	virtual NodeMetadata* clone();
+	virtual void serializeBody(std::ostream &os);
+	virtual std::string infoText();
+
+	std::string getText(){ return m_text; }
+	void setText(std::string t){ m_text = t; }
+
+private:
+	std::string m_text;
+};
+
+class NodeMetadataList
+{
+public:
+	~NodeMetadataList();
+
+	void serialize(std::ostream &os);
+	void deSerialize(std::istream &is);
+	
+	// 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);
+private:
+	core::map<v3s16, NodeMetadata*> m_data;
+};
+
+#endif
+