WIP node metadata, node timers

1 files changed, 111 insertions, 777 deletions

diff --git a/src/content_nodemeta.cpp b/src/content_nodemeta.cpp
index b36d57c89..1ade1ee76 100644
--- a/src/content_nodemeta.cpp
+++ b/src/content_nodemeta.cpp
@@ -1,6 +1,6 @@
 /*
 Minetest-c55
-Copyright (C) 2010-2011 celeron55, Perttu Ahola <celeron55@gmail.com>
+Copyright (C) 2010-2012 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
@@ -18,15 +18,9 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 */
 
 #include "content_nodemeta.h"
-
-#include <map>
 #include "inventory.h"
 #include "log.h"
 #include "utility.h"
-#include "craftdef.h"
-#include "gamedef.h"
-
-class Inventory;
 
 #define NODEMETA_GENERIC 1
 #define NODEMETA_SIGN 14
@@ -34,809 +28,149 @@ class Inventory;
 #define NODEMETA_FURNACE 16
 #define NODEMETA_LOCKABLE_CHEST 17
 
-core::map<u16, NodeMetadata::Factory> NodeMetadata::m_types;
-core::map<std::string, NodeMetadata::Factory2> NodeMetadata::m_names;
-
-class SignNodeMetadata : public NodeMetadata
-{
-public:
-	SignNodeMetadata(IGameDef *gamedef, std::string text);
-	//~SignNodeMetadata();
-	
-	virtual u16 typeId() const;
-	virtual const char* typeName() const
-	{ return "sign"; }
-	static NodeMetadata* create(std::istream &is, IGameDef *gamedef);
-	static NodeMetadata* create(IGameDef *gamedef);
-	virtual NodeMetadata* clone(IGameDef *gamedef);
-	virtual void serializeBody(std::ostream &os);
-	virtual std::string infoText();
-
-	virtual bool allowsTextInput(){ return true; }
-	virtual std::string getText(){ return m_text; }
-	virtual void setText(const std::string &t){ m_text = t; }
-
-private:
-	std::string m_text;
-};
-
-class ChestNodeMetadata : public NodeMetadata
-{
-public:
-	ChestNodeMetadata(IGameDef *gamedef);
-	~ChestNodeMetadata();
-	
-	virtual u16 typeId() const;
-	virtual const char* typeName() const
-	{ return "chest"; }
-	static NodeMetadata* create(std::istream &is, IGameDef *gamedef);
-	static NodeMetadata* create(IGameDef *gamedef);
-	virtual NodeMetadata* clone(IGameDef *gamedef);
-	virtual void serializeBody(std::ostream &os);
-	virtual std::string infoText();
-	virtual Inventory* getInventory() {return m_inventory;}
-	virtual bool nodeRemovalDisabled();
-	virtual std::string getInventoryDrawSpecString();
-	
-private:
-	Inventory *m_inventory;
-};
-
-class LockingChestNodeMetadata : public NodeMetadata
-{
-public:
-	LockingChestNodeMetadata(IGameDef *gamedef);
-	~LockingChestNodeMetadata();
-
-	virtual u16 typeId() const;
-	virtual const char* typeName() const
-	{ return "locked_chest"; }
-	static NodeMetadata* create(std::istream &is, IGameDef *gamedef);
-	static NodeMetadata* create(IGameDef *gamedef);
-	virtual NodeMetadata* clone(IGameDef *gamedef);
-	virtual void serializeBody(std::ostream &os);
-	virtual std::string infoText();
-	virtual Inventory* getInventory() {return m_inventory;}
-	virtual bool nodeRemovalDisabled();
-	virtual std::string getInventoryDrawSpecString();
-
-	virtual std::string getOwner(){ return m_text; }
-	virtual void setOwner(std::string t){ m_text = t; }
-
-private:
-	Inventory *m_inventory;
-	std::string m_text;
-};
-
-class FurnaceNodeMetadata : public NodeMetadata
-{
-public:
-	FurnaceNodeMetadata(IGameDef *gamedef);
-	~FurnaceNodeMetadata();
-	
-	virtual u16 typeId() const;
-	virtual const char* typeName() const
-	{ return "furnace"; }
-	virtual NodeMetadata* clone(IGameDef *gamedef);
-	static NodeMetadata* create(std::istream &is, IGameDef *gamedef);
-	static NodeMetadata* create(IGameDef *gamedef);
-	virtual void serializeBody(std::ostream &os);
-	virtual std::string infoText();
-	virtual Inventory* getInventory() {return m_inventory;}
-	virtual void inventoryModified();
-	virtual bool step(float dtime);
-	virtual bool nodeRemovalDisabled();
-	virtual std::string getInventoryDrawSpecString();
-	
-protected:
-	bool getCookResult(bool remove, std::string &cookresult, float &cooktime);
-	bool getBurnResult(bool remove, float &burntime);
-
-private:
-	Inventory *m_inventory;
-	std::string m_infotext;
-	float m_step_accumulator;
-	float m_fuel_totaltime;
-	float m_fuel_time;
-	float m_src_totaltime;
-	float m_src_time;
-};
-
-/*
-	SignNodeMetadata
-*/
-
-// Prototype
-SignNodeMetadata proto_SignNodeMetadata(NULL, "");
-
-SignNodeMetadata::SignNodeMetadata(IGameDef *gamedef, std::string text):
-	NodeMetadata(gamedef),
-	m_text(text)
-{
-	NodeMetadata::registerType(typeId(), typeName(), create, create);
-}
-u16 SignNodeMetadata::typeId() const
-{
-	return NODEMETA_SIGN;
-}
-NodeMetadata* SignNodeMetadata::create(std::istream &is, IGameDef *gamedef)
-{
-	std::string text = deSerializeString(is);
-	return new SignNodeMetadata(gamedef, text);
-}
-NodeMetadata* SignNodeMetadata::create(IGameDef *gamedef)
-{
-	return new SignNodeMetadata(gamedef, "");
-}
-NodeMetadata* SignNodeMetadata::clone(IGameDef *gamedef)
-{
-	return new SignNodeMetadata(gamedef, m_text);
-}
-void SignNodeMetadata::serializeBody(std::ostream &os)
+// Returns true if node timer must be set
+static bool content_nodemeta_deserialize_legacy_body(
+		std::istream &is, s16 id, NodeMetadata *meta)
 {
-	os<<serializeString(m_text);
-}
-std::string SignNodeMetadata::infoText()
-{
-	return std::string("\"")+m_text+"\"";
-}
-
-/*
-	ChestNodeMetadata
-*/
-
-// Prototype
-ChestNodeMetadata proto_ChestNodeMetadata(NULL);
-
-ChestNodeMetadata::ChestNodeMetadata(IGameDef *gamedef):
-	NodeMetadata(gamedef)
-{
-	NodeMetadata::registerType(typeId(), typeName(), create, create);
-	m_inventory = NULL;
-}
-ChestNodeMetadata::~ChestNodeMetadata()
-{
-	delete m_inventory;
-}
-u16 ChestNodeMetadata::typeId() const
-{
-	return NODEMETA_CHEST;
-}
-NodeMetadata* ChestNodeMetadata::create(std::istream &is, IGameDef *gamedef)
-{
-	ChestNodeMetadata *d = new ChestNodeMetadata(gamedef);
-	d->m_inventory = new Inventory(gamedef->idef());
-	d->m_inventory->deSerialize(is);
-	return d;
-}
-NodeMetadata* ChestNodeMetadata::create(IGameDef *gamedef)
-{
-	ChestNodeMetadata *d = new ChestNodeMetadata(gamedef);
-	d->m_inventory = new Inventory(gamedef->idef());
-	d->m_inventory->addList("0", 8*4);
-	return d;
-}
-NodeMetadata* ChestNodeMetadata::clone(IGameDef *gamedef)
-{
-	ChestNodeMetadata *d = new ChestNodeMetadata(gamedef);
-	d->m_inventory = new Inventory(*m_inventory);
-	return d;
-}
-void ChestNodeMetadata::serializeBody(std::ostream &os)
-{
-	m_inventory->serialize(os);
-}
-std::string ChestNodeMetadata::infoText()
-{
-	return "Chest";
-}
-bool ChestNodeMetadata::nodeRemovalDisabled()
-{
-	/*
-		Disable removal if chest contains something
-	*/
-	InventoryList *list = m_inventory->getList("0");
-	if(list == NULL)
-		return false;
-	if(list->getUsedSlots() == 0)
-		return false;
-	return true;
-}
-std::string ChestNodeMetadata::getInventoryDrawSpecString()
-{
-	return
-		"invsize[8,9;]"
-		"list[current_name;0;0,0;8,4;]"
-		"list[current_player;main;0,5;8,4;]";
-}
+	meta->clear();
 
-/*
-	LockingChestNodeMetadata
-*/
+	if(id == NODEMETA_GENERIC) // GenericNodeMetadata (0.4-dev)
+	{
+		meta->getInventory()->deSerialize(is);
+		deSerializeLongString(is);  // m_text
+		deSerializeString(is);  // m_owner
 
-// Prototype
-LockingChestNodeMetadata proto_LockingChestNodeMetadata(NULL);
+		meta->setInfoText(deSerializeString(is));
+		meta->setInventoryDrawSpec(deSerializeString(is));
+		readU8(is);  // m_allow_text_input
+		meta->setAllowRemoval(readU8(is) == 0);
+		readU8(is);  // m_enforce_owner
 
-LockingChestNodeMetadata::LockingChestNodeMetadata(IGameDef *gamedef):
-	NodeMetadata(gamedef)
-{
-	NodeMetadata::registerType(typeId(), typeName(), create, create);
-	m_inventory = NULL;
-}
-LockingChestNodeMetadata::~LockingChestNodeMetadata()
-{
-	delete m_inventory;
-}
-u16 LockingChestNodeMetadata::typeId() const
-{
-	return NODEMETA_LOCKABLE_CHEST;
-}
-NodeMetadata* LockingChestNodeMetadata::create(std::istream &is, IGameDef *gamedef)
-{
-	LockingChestNodeMetadata *d = new LockingChestNodeMetadata(gamedef);
-	d->setOwner(deSerializeString(is));
-	d->m_inventory = new Inventory(gamedef->idef());
-	d->m_inventory->deSerialize(is);
-	return d;
-}
-NodeMetadata* LockingChestNodeMetadata::create(IGameDef *gamedef)
-{
-	LockingChestNodeMetadata *d = new LockingChestNodeMetadata(gamedef);
-	d->m_inventory = new Inventory(gamedef->idef());
-	d->m_inventory->addList("0", 8*4);
-	return d;
-}
-NodeMetadata* LockingChestNodeMetadata::clone(IGameDef *gamedef)
-{
-	LockingChestNodeMetadata *d = new LockingChestNodeMetadata(gamedef);
-	d->m_inventory = new Inventory(*m_inventory);
-	return d;
-}
-void LockingChestNodeMetadata::serializeBody(std::ostream &os)
-{
-	os<<serializeString(m_text);
-	m_inventory->serialize(os);
-}
-std::string LockingChestNodeMetadata::infoText()
-{
-	return "Locking Chest";
-}
-bool LockingChestNodeMetadata::nodeRemovalDisabled()
-{
-	/*
-		Disable removal if chest contains something
-	*/
-	InventoryList *list = m_inventory->getList("0");
-	if(list == NULL)
+		int num_vars = readU32(is);
+		for(int i=0; i<num_vars; i++){
+			std::string name = deSerializeString(is);
+			std::string var = deSerializeLongString(is);
+			meta->setString(name, var);
+		}
 		return false;
-	if(list->getUsedSlots() == 0)
+	}
+	else if(id == NODEMETA_SIGN) // SignNodeMetadata
+	{
+		meta->setString("text", deSerializeLongString(is));
+		meta->setInfoText("\"${text}\"");
+		meta->setFormSpec("field[text;;${text}]");
 		return false;
-	return true;
-}
-std::string LockingChestNodeMetadata::getInventoryDrawSpecString()
-{
-	return
-		"invsize[8,9;]"
-		"list[current_name;0;0,0;8,4;]"
-		"list[current_player;main;0,5;8,4;]";
-}
-
-/*
-	FurnaceNodeMetadata
-*/
-
-// Prototype
-FurnaceNodeMetadata proto_FurnaceNodeMetadata(NULL);
-
-FurnaceNodeMetadata::FurnaceNodeMetadata(IGameDef *gamedef):
-	NodeMetadata(gamedef)
-{
-	NodeMetadata::registerType(typeId(), typeName(), create, create);
-	
-	m_inventory = NULL;
-
-	m_infotext = "Furnace is inactive";
-
-	m_step_accumulator = 0;
-	m_fuel_totaltime = 0;
-	m_fuel_time = 0;
-	m_src_totaltime = 0;
-	m_src_time = 0;
-}
-FurnaceNodeMetadata::~FurnaceNodeMetadata()
-{
-	delete m_inventory;
-}
-u16 FurnaceNodeMetadata::typeId() const
-{
-	return NODEMETA_FURNACE;
-}
-NodeMetadata* FurnaceNodeMetadata::clone(IGameDef *gamedef)
-{
-	FurnaceNodeMetadata *d = new FurnaceNodeMetadata(m_gamedef);
-	d->m_inventory = new Inventory(*m_inventory);
-	return d;
-}
-NodeMetadata* FurnaceNodeMetadata::create(std::istream &is, IGameDef *gamedef)
-{
-	FurnaceNodeMetadata *d = new FurnaceNodeMetadata(gamedef);
-
-	d->m_inventory = new Inventory(gamedef->idef());
-	d->m_inventory->deSerialize(is);
-
-	int temp = 0;
-	is>>temp;
-	d->m_fuel_totaltime = (float)temp/10;
-	temp = 0;
-	is>>temp;
-	d->m_fuel_time = (float)temp/10;
-	temp = 0;
-	is>>temp;
-	d->m_src_totaltime = (float)temp/10;
-	temp = 0;
-	is>>temp;
-	d->m_src_time = (float)temp/10;
-
-	if(is.eof())
+	}
+	else if(id == NODEMETA_CHEST) // ChestNodeMetadata
 	{
-		// Old furnaces didn't serialize src_totaltime and src_time
-		d->m_src_totaltime = 0;
-		d->m_src_time = 0;
-		d->m_infotext = "";
+		meta->getInventory()->deSerialize(is);
+		meta->setInventoryDrawSpec("invsize[8,9;]"
+				"list[current_name;0;0,0;8,4;]"
+				"list[current_player;main;0,5;8,4;]");
+		return false;
 	}
-	else
+	else if(id == NODEMETA_LOCKABLE_CHEST) // LockingChestNodeMetadata
 	{
-		// New furnaces also serialize the infotext (so that the
-		// client doesn't need to have the list of cooking recipes).
-		d->m_infotext = deSerializeJsonString(is);
+		meta->setString("owner", deSerializeString(is));
+		meta->getInventory()->deSerialize(is);
+		meta->setInventoryDrawSpec("invsize[8,9;]"
+				"list[current_name;0;0,0;8,4;]"
+				"list[current_player;main;0,5;8,4;]");
+		return false;
 	}
-
-	return d;
-}
-NodeMetadata* FurnaceNodeMetadata::create(IGameDef *gamedef)
-{
-	FurnaceNodeMetadata *d = new FurnaceNodeMetadata(gamedef);
-	d->m_inventory = new Inventory(gamedef->idef());
-	d->m_inventory->addList("fuel", 1);
-	d->m_inventory->addList("src", 1);
-	d->m_inventory->addList("dst", 4);
-	return d;
-}
-void FurnaceNodeMetadata::serializeBody(std::ostream &os)
-{
-	m_inventory->serialize(os);
-	os<<itos(m_fuel_totaltime*10)<<" ";
-	os<<itos(m_fuel_time*10)<<" ";
-	os<<itos(m_src_totaltime*10)<<" ";
-	os<<itos(m_src_time*10)<<" ";
-	os<<serializeJsonString(m_infotext);
-}
-std::string FurnaceNodeMetadata::infoText()
-{
-	return m_infotext;
-}
-bool FurnaceNodeMetadata::nodeRemovalDisabled()
-{
-	/*
-		Disable removal if furnace is not empty
-	*/
-	InventoryList *list[3] = {m_inventory->getList("src"),
-	m_inventory->getList("dst"), m_inventory->getList("fuel")};
-	
-	for(int i = 0; i < 3; i++) {
-		if(list[i] == NULL)
-			continue;
-		if(list[i]->getUsedSlots() == 0)
-			continue;
+	else if(id == NODEMETA_FURNACE) // FurnaceNodeMetadata
+	{
+		meta->getInventory()->deSerialize(is);
+		int temp = 0;
+		is>>temp;
+		meta->setString("fuel_totaltime", ftos((float)temp/10));
+		temp = 0;
+		is>>temp;
+		meta->setString("fuel_time", ftos((float)temp/10));
+		temp = 0;
+		is>>temp;
+		//meta->setString("src_totaltime", ftos((float)temp/10));
+		temp = 0;
+		is>>temp;
+		meta->setString("src_time", ftos((float)temp/10));
+
+		meta->setInventoryDrawSpec("invsize[8,9;]"
+			"list[current_name;fuel;2,3;1,1;]"
+			"list[current_name;src;2,1;1,1;]"
+			"list[current_name;dst;5,1;2,2;]"
+			"list[current_player;main;0,5;8,4;]");
 		return true;
 	}
-	return false;
-	
-}
-void FurnaceNodeMetadata::inventoryModified()
-{
-	infostream<<"Furnace inventory modification callback"<<std::endl;
-}
-bool FurnaceNodeMetadata::step(float dtime)
-{
-	if(dtime > 60.0)
-		infostream<<"Furnace stepping a long time ("<<dtime<<")"<<std::endl;
-
-	InventoryList *dst_list = m_inventory->getList("dst");
-	assert(dst_list);
-
-	// Update at a fixed frequency
-	const float interval = 2.0;
-	m_step_accumulator += dtime;
-	bool changed = false;
-	while(m_step_accumulator > interval)
+	else
 	{
-		m_step_accumulator -= interval;
-		dtime = interval;
-
-		//infostream<<"Furnace step dtime="<<dtime<<std::endl;
-
-		bool changed_this_loop = false;
-
-		// Check
-		// 1. if the source item is cookable
-		// 2. if there is room for the cooked item
-		std::string cookresult;
-		float cooktime;
-		bool cookable = getCookResult(false, cookresult, cooktime);
-		ItemStack cookresult_item;
-		bool room_available = false;
-		if(cookable)
-		{
-			cookresult_item.deSerialize(cookresult, m_gamedef->idef());
-			room_available = dst_list->roomForItem(cookresult_item);
-		}
-
-		// Step fuel time
-		bool burning = (m_fuel_time < m_fuel_totaltime);
-		if(burning)
-		{
-			changed_this_loop = true;
-			m_fuel_time += dtime;
-		}
-
-		std::string infotext;
-		if(room_available)
-		{
-			float burntime;
-			if(burning)
-			{
-				changed_this_loop = true;
-				m_src_time += dtime;
-				m_src_totaltime = cooktime;
-				infotext = "Furnace is cooking";
-			}
-			else if(getBurnResult(true, burntime))
-			{
-				// Fuel inserted
-				changed_this_loop = true;
-				m_fuel_time = 0;
-				m_fuel_totaltime = burntime;
-				//m_src_time += dtime;
-				//m_src_totaltime = cooktime;
-				infotext = "Furnace is cooking";
-			}
-			else
-			{
-				m_src_time = 0;
-				m_src_totaltime = 0;
-				infotext = "Furnace is out of fuel";
-			}
-			if(m_src_totaltime > 0.001 && m_src_time >= m_src_totaltime)
-			{
-				// One item fully cooked
-				changed_this_loop = true;
-				dst_list->addItem(cookresult_item);
-				getCookResult(true, cookresult, cooktime); // decrement source
-				m_src_totaltime = 0;
-				m_src_time = 0;
-			}
-		}
-		else
-		{
-			// Not cookable or no room available
-			m_src_totaltime = 0;
-			m_src_time = 0;
-			if(cookable)
-				infotext = "Furnace is overloaded";
-			else if(burning)
-				infotext = "Furnace is active";
-			else
-			{
-				infotext = "Furnace is inactive";
-				m_fuel_totaltime = 0;
-				m_fuel_time = 0;
-			}
-		}
-
-		// Do this so it doesn't always show (0%) for weak fuel
-		if(m_fuel_totaltime > 3) {
-			infotext += " (";
-			infotext += itos(m_fuel_time/m_fuel_totaltime*100);
-			infotext += "%)";
-		}
-
-		if(infotext != m_infotext)
-		{
-			m_infotext = infotext;
-			changed_this_loop = true;
-		}
-
-		if(burning && m_fuel_time >= m_fuel_totaltime)
-		{
-			m_fuel_time = 0;
-			m_fuel_totaltime = 0;
-		}
-
-		if(changed_this_loop)
-		{
-			changed = true;
-		}
-		else
-		{
-			m_step_accumulator = 0;
-			break;
-		}
+		throw SerializationError("Unknown legacy node metadata");
 	}
-	return changed;
-}
-std::string FurnaceNodeMetadata::getInventoryDrawSpecString()
-{
-	return
-		"invsize[8,9;]"
-		"list[current_name;fuel;2,3;1,1;]"
-		"list[current_name;src;2,1;1,1;]"
-		"list[current_name;dst;5,1;2,2;]"
-		"list[current_player;main;0,5;8,4;]";
 }
-bool FurnaceNodeMetadata::getCookResult(bool remove,
-		std::string &cookresult, float &cooktime)
-{
-	std::vector<ItemStack> items;
-	InventoryList *src_list = m_inventory->getList("src");
-	assert(src_list);
-	items.push_back(src_list->getItem(0));
 
-	CraftInput ci(CRAFT_METHOD_COOKING, 1, items);
-	CraftOutput co;
-	bool found = m_gamedef->getCraftDefManager()->getCraftResult(
-			ci, co, remove, m_gamedef);
-	if(remove)
-		src_list->changeItem(0, ci.items[0]);
-
-	cookresult = co.item;
-	cooktime = co.time;
-	return found;
-}
-bool FurnaceNodeMetadata::getBurnResult(bool remove, float &burntime)
+static bool content_nodemeta_deserialize_legacy_meta(
+		std::istream &is, NodeMetadata *meta)
 {
-	std::vector<ItemStack> items;
-	InventoryList *fuel_list = m_inventory->getList("fuel");
-	assert(fuel_list);
-	items.push_back(fuel_list->getItem(0));
+	// Read id
+	s16 id = readS16(is);
 
-	CraftInput ci(CRAFT_METHOD_FUEL, 1, items);
-	CraftOutput co;
-	bool found = m_gamedef->getCraftDefManager()->getCraftResult(
-			ci, co, remove, m_gamedef);
-	if(remove)
-		fuel_list->changeItem(0, ci.items[0]);
-
-	burntime = co.time;
-	return found;
+	// Read data
+	std::string data = deSerializeString(is);
+	std::istringstream tmp_is(data, std::ios::binary);
+	return content_nodemeta_deserialize_legacy_body(tmp_is, id, meta);
 }
 
-
-/*
-	GenericNodeMetadata
-*/
-
-class GenericNodeMetadata : public NodeMetadata
+void content_nodemeta_deserialize_legacy(std::istream &is,
+		NodeMetadataList *meta, NodeTimerList *timers,
+		IGameDef *gamedef)
 {
-private:
-	Inventory *m_inventory;
-	std::string m_text;
-	std::string m_owner;
+	meta->clear();
+	timers->clear();
 
-	std::string m_infotext;
-	std::string m_inventorydrawspec;
-	bool m_allow_text_input;
-	bool m_removal_disabled;
-	bool m_enforce_owner;
+	u16 version = readU16(is);
 
-	bool m_inventory_modified;
-	bool m_text_modified;
-
-	std::map<std::string, std::string> m_stringvars;
-
-public:
-	u16 typeId() const
-	{
-		return NODEMETA_GENERIC;
-	}
-	const char* typeName() const
+	if(version > 1)
 	{
-		return "generic";
+		infostream<<__FUNCTION_NAME<<": version "<<version<<" not supported"
+				<<std::endl;
+		throw SerializationError(__FUNCTION_NAME);
 	}
 
-	GenericNodeMetadata(IGameDef *gamedef):
-		NodeMetadata(gamedef),
+	u16 count = readU16(is);
 
-		m_inventory(NULL),
-		m_text(""),
-		m_owner(""),
-
-		m_infotext("GenericNodeMetadata"),
-		m_inventorydrawspec(""),
-		m_allow_text_input(false),
-		m_removal_disabled(false),
-		m_enforce_owner(false),
-
-		m_inventory_modified(false),
-		m_text_modified(false)
-	{
-		NodeMetadata::registerType(typeId(), typeName(), create, create);
-	}
-	virtual ~GenericNodeMetadata()
+	for(u16 i=0; i<count; i++)
 	{
-		delete m_inventory;
-	}
-	NodeMetadata* clone(IGameDef *gamedef)
-	{
-		GenericNodeMetadata *d = new GenericNodeMetadata(m_gamedef);
+		u16 p16 = readU16(is);
 
-		d->m_inventory = new Inventory(*m_inventory);
-		d->m_text = m_text;
-		d->m_owner = m_owner;
-
-		d->m_infotext = m_infotext;
-		d->m_inventorydrawspec = m_inventorydrawspec;
-		d->m_allow_text_input = m_allow_text_input;
-		d->m_removal_disabled = m_removal_disabled;
-		d->m_enforce_owner = m_enforce_owner;
-		d->m_inventory_modified = m_inventory_modified;
-		d->m_text_modified = m_text_modified;
-		return d;
-	}
-	static NodeMetadata* create(IGameDef *gamedef)
-	{
-		GenericNodeMetadata *d = new GenericNodeMetadata(gamedef);
-		d->m_inventory = new Inventory(gamedef->idef());
-		return d;
-	}
-	static NodeMetadata* create(std::istream &is, IGameDef *gamedef)
-	{
-		GenericNodeMetadata *d = new GenericNodeMetadata(gamedef);
-		
-		d->m_inventory = new Inventory(gamedef->idef());
-		d->m_inventory->deSerialize(is);
-		d->m_text = deSerializeLongString(is);
-		d->m_owner = deSerializeString(is);
-		
-		d->m_infotext = deSerializeString(is);
-		d->m_inventorydrawspec = deSerializeString(is);
-		d->m_allow_text_input = readU8(is);
-		d->m_removal_disabled = readU8(is);
-		d->m_enforce_owner = readU8(is);
+		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;
 
-		int num_vars = readU32(is);
-		for(int i=0; i<num_vars; i++){
-			std::string name = deSerializeString(is);
-			std::string var = deSerializeLongString(is);
-			d->m_stringvars[name] = var;
-		}
-
-		return d;
-	}
-	void serializeBody(std::ostream &os)
-	{
-		m_inventory->serialize(os);
-		os<<serializeLongString(m_text);
-		os<<serializeString(m_owner);
-
-		os<<serializeString(m_infotext);
-		os<<serializeString(m_inventorydrawspec);
-		writeU8(os, m_allow_text_input);
-		writeU8(os, m_removal_disabled);
-		writeU8(os, m_enforce_owner);
-
-		int num_vars = m_stringvars.size();
-		writeU32(os, num_vars);
-		for(std::map<std::string, std::string>::iterator
-				i = m_stringvars.begin(); i != m_stringvars.end(); i++){
-			os<<serializeString(i->first);
-			os<<serializeLongString(i->second);
+		if(meta->get(p) != NULL)
+		{
+			infostream<<"WARNING: "<<__FUNCTION_NAME<<": "
+					<<"already set data at position"
+					<<"("<<p.X<<","<<p.Y<<","<<p.Z<<"): Ignoring."
+					<<std::endl;
+			continue;
 		}
-	}
 
-	std::string infoText()
-	{
-		return m_infotext;
-	}
-	Inventory* getInventory()
-	{
-		return m_inventory;
-	}
-	void inventoryModified()
-	{
-		m_inventory_modified = true;
-	}
-	bool step(float dtime)
-	{
-		return false;
-	}
-	bool nodeRemovalDisabled()
-	{
-		return m_removal_disabled;
-	}
-	std::string getInventoryDrawSpecString()
-	{
-		return m_inventorydrawspec;
-	}
-	bool allowsTextInput()
-	{
-		return m_allow_text_input;
-	}
-	std::string getText()
-	{
-		return m_text;
-	}
-	void setText(const std::string &t)
-	{
-		m_text = t;
-		m_text_modified = true;
-	}
-	std::string getOwner()
-	{
-		if(m_enforce_owner)
-			return m_owner;
-		else
-			return "";
-	}
-	void setOwner(std::string t)
-	{
-		m_owner = t;
-	}
-	
-	/* Interface for GenericNodeMetadata */
+		NodeMetadata *data = new NodeMetadata(gamedef);
+		bool need_timer = content_nodemeta_deserialize_legacy_meta(is, data);
+		meta->set(p, data);
 
-	void setInfoText(const std::string &text)
-	{
-		infostream<<"GenericNodeMetadata::setInfoText(\""
-				<<text<<"\")"<<std::endl;
-		m_infotext = text;
-	}
-	void setInventoryDrawSpec(const std::string &text)
-	{
-		m_inventorydrawspec = text;
-	}
-	void setAllowTextInput(bool b)
-	{
-		m_allow_text_input = b;
-	}
-	void setRemovalDisabled(bool b)
-	{
-		m_removal_disabled = b;
-	}
-	void setEnforceOwner(bool b)
-	{
-		m_enforce_owner = b;
+		if(need_timer)
+			timers->set(p, NodeTimer(1., 0.));
 	}
-	bool isInventoryModified()
-	{
-		return m_inventory_modified;
-	}
-	void resetInventoryModified()
-	{
-		m_inventory_modified = false;
-	}
-	bool isTextModified()
-	{
-		return m_text_modified;
-	}
-	void resetTextModified()
-	{
-		m_text_modified = false;
-	}
-	void setString(const std::string &name, const std::string &var)
-	{
-		m_stringvars[name] = var;
-	}
-	std::string getString(const std::string &name)
-	{
-		std::map<std::string, std::string>::iterator i;
-		i = m_stringvars.find(name);
-		if(i == m_stringvars.end())
-			return "";
-		return i->second;
-	}
-};
+}
 
-// Prototype
-GenericNodeMetadata proto_GenericNodeMetadata(NULL);
+void content_nodemeta_serialize_legacy(std::ostream &os, NodeMetadataList *meta)
+{
+	// Sorry, I was too lazy to implement this. --kahrl
+	writeU16(os, 1); // version
+	writeU16(os, 0); // count
+}
 
+// END