X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=src%2Fnodemetadata.cpp;h=b5052c3b8754122460330bd87f17b10661155973;hb=a0edf2849aeebc1fb37ead1177caf471ab4a19d4;hp=f9468e4fa14f2a3dcc21f08788fdb734b2d24712;hpb=ccae5a49ad55a7c70d3977af33f5ce413abe94df;p=minetest.git

diff --git a/src/nodemetadata.cpp b/src/nodemetadata.cpp
index f9468e4fa..b5052c3b8 100644
--- a/src/nodemetadata.cpp
+++ b/src/nodemetadata.cpp
@@ -1,512 +1,258 @@
 /*
-Minetest-c55
-Copyright (C) 2010-2011 celeron55, Perttu Ahola <celeron55@gmail.com>
+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 General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
+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 General Public License for more details.
+GNU Lesser General Public License for more details.
 
-You should have received a copy of the GNU General Public License along
+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.
 */
 
 #include "nodemetadata.h"
-#include "utility.h"
-#include "mapnode.h"
 #include "exceptions.h"
+#include "gamedef.h"
 #include "inventory.h"
+#include "log.h"
+#include "util/serialize.h"
+#include "util/basic_macros.h"
+#include "constants.h" // MAP_BLOCKSIZE
 #include <sstream>
 
 /*
 	NodeMetadata
 */
 
-core::map<u16, NodeMetadata::Factory> NodeMetadata::m_types;
+NodeMetadata::NodeMetadata(IItemDefManager *item_def_mgr):
+	m_inventory(new Inventory(item_def_mgr))
+{}
 
-NodeMetadata::NodeMetadata()
+NodeMetadata::~NodeMetadata()
 {
+	delete m_inventory;
 }
 
-NodeMetadata::~NodeMetadata()
+void NodeMetadata::serialize(std::ostream &os, u8 version, bool disk) const
 {
+	int num_vars = disk ? m_stringvars.size() : countNonPrivate();
+	writeU32(os, num_vars);
+	for (const auto &sv : m_stringvars) {
+		bool priv = isPrivate(sv.first);
+		if (!disk && priv)
+			continue;
+
+		os << serializeString16(sv.first);
+		os << serializeString32(sv.second);
+		if (version >= 2)
+			writeU8(os, (priv) ? 1 : 0);
+	}
+
+	m_inventory->serialize(os);
 }
 
-NodeMetadata* NodeMetadata::deSerialize(std::istream &is)
+void NodeMetadata::deSerialize(std::istream &is, u8 version)
 {
-	// Read id
-	u8 buf[2];
-	is.read((char*)buf, 2);
-	s16 id = readS16(buf);
-	
-	// Read data
-	std::string data = deSerializeString(is);
-	
-	// Find factory function
-	core::map<u16, Factory>::Node *n;
-	n = m_types.find(id);
-	if(n == NULL)
-	{
-		// If factory is not found, just return.
-		dstream<<"WARNING: NodeMetadata: No factory for typeId="
-				<<id<<std::endl;
-		return NULL;
-	}
-	
-	// Try to load the metadata. If it fails, just return.
-	try
-	{
-		std::istringstream iss(data, std::ios_base::binary);
-		
-		Factory f = n->getValue();
-		NodeMetadata *meta = (*f)(iss);
-		return meta;
-	}
-	catch(SerializationError &e)
-	{
-		dstream<<"WARNING: NodeMetadata: ignoring SerializationError"<<std::endl;
-		return NULL;
+	clear();
+	int num_vars = readU32(is);
+	for(int i=0; i<num_vars; i++){
+		std::string name = deSerializeString16(is);
+		std::string var = deSerializeString32(is);
+		m_stringvars[name] = var;
+		if (version >= 2) {
+			if (readU8(is) == 1)
+				markPrivate(name, true);
+		}
 	}
+
+	m_inventory->deSerialize(is);
 }
 
-void NodeMetadata::serialize(std::ostream &os)
+void NodeMetadata::clear()
 {
-	u8 buf[2];
-	writeU16(buf, typeId());
-	os.write((char*)buf, 2);
-	
-	std::ostringstream oss(std::ios_base::binary);
-	serializeBody(oss);
-	os<<serializeString(oss.str());
+	Metadata::clear();
+	m_privatevars.clear();
+	m_inventory->clear();
 }
 
-void NodeMetadata::registerType(u16 id, Factory f)
+bool NodeMetadata::empty() const
 {
-	core::map<u16, Factory>::Node *n;
-	n = m_types.find(id);
-	if(n)
-		return;
-	m_types.insert(id, f);
+	return Metadata::empty() && m_inventory->getLists().empty();
 }
 
-/*
-	SignNodeMetadata
-*/
-
-// Prototype
-SignNodeMetadata proto_SignNodeMetadata("");
 
-SignNodeMetadata::SignNodeMetadata(std::string text):
-	m_text(text)
-{
-	NodeMetadata::registerType(typeId(), create);
-}
-u16 SignNodeMetadata::typeId() const
+void NodeMetadata::markPrivate(const std::string &name, bool set)
 {
-	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);
+	if (set)
+		m_privatevars.insert(name);
+	else
+		m_privatevars.erase(name);
 }
-std::string SignNodeMetadata::infoText()
+
+int NodeMetadata::countNonPrivate() const
 {
-	return std::string("\"")+m_text+"\"";
+	// m_privatevars can contain names not actually present
+	// DON'T: return m_stringvars.size() - m_privatevars.size();
+	int n = 0;
+	for (const auto &sv : m_stringvars) {
+		if (!isPrivate(sv.first))
+			n++;
+	}
+	return n;
 }
 
 /*
-	ChestNodeMetadata
+	NodeMetadataList
 */
 
-// Prototype
-ChestNodeMetadata proto_ChestNodeMetadata;
-
-ChestNodeMetadata::ChestNodeMetadata()
-{
-	NodeMetadata::registerType(typeId(), create);
-	
-	m_inventory = new Inventory();
-	m_inventory->addList("0", 8*4);
-}
-ChestNodeMetadata::~ChestNodeMetadata()
-{
-	delete m_inventory;
-}
-u16 ChestNodeMetadata::typeId() const
-{
-	return CONTENT_CHEST;
-}
-NodeMetadata* ChestNodeMetadata::create(std::istream &is)
-{
-	ChestNodeMetadata *d = new ChestNodeMetadata();
-	d->m_inventory->deSerialize(is);
-	return d;
-}
-NodeMetadata* ChestNodeMetadata::clone()
-{
-	ChestNodeMetadata *d = new ChestNodeMetadata();
-	*d->m_inventory = *m_inventory;
-	return d;
-}
-void ChestNodeMetadata::serializeBody(std::ostream &os)
-{
-	m_inventory->serialize(os);
-}
-std::string ChestNodeMetadata::infoText()
-{
-	return "Chest";
-}
-bool ChestNodeMetadata::nodeRemovalDisabled()
+void NodeMetadataList::serialize(std::ostream &os, u8 blockver, bool disk,
+	bool absolute_pos, bool include_empty) const
 {
 	/*
-		Disable removal if chest contains something
+		Version 0 is a placeholder for "nothing to see here; go away."
 	*/
-	InventoryList *list = m_inventory->getList("0");
-	if(list == NULL)
-		return false;
-	if(list->getUsedSlots() == 0)
-		return false;
-	return true;
-}
 
-/*
-	FurnaceNodeMetadata
-*/
+	u16 count = include_empty ? m_data.size() : countNonEmpty();
+	if (count == 0) {
+		writeU8(os, 0); // version
+		return;
+	}
 
-// Prototype
-FurnaceNodeMetadata proto_FurnaceNodeMetadata;
+	u8 version = (blockver > 27) ? 2 : 1;
+	writeU8(os, version);
+	writeU16(os, count);
 
-FurnaceNodeMetadata::FurnaceNodeMetadata()
-{
-	NodeMetadata::registerType(typeId(), create);
-	
-	m_inventory = new Inventory();
-	m_inventory->addList("fuel", 1);
-	m_inventory->addList("src", 1);
-	m_inventory->addList("dst", 4);
-
-	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 CONTENT_FURNACE;
-}
-NodeMetadata* FurnaceNodeMetadata::clone()
-{
-	FurnaceNodeMetadata *d = new FurnaceNodeMetadata();
-	*d->m_inventory = *m_inventory;
-	return d;
+	for (NodeMetadataMap::const_iterator
+			i = m_data.begin();
+			i != m_data.end(); ++i) {
+		v3s16 p = i->first;
+		NodeMetadata *data = i->second;
+		if (!include_empty && data->empty())
+			continue;
+
+		if (absolute_pos) {
+			writeS16(os, p.X);
+			writeS16(os, p.Y);
+			writeS16(os, p.Z);
+		} else {
+			// Serialize positions within a mapblock
+			u16 p16 = (p.Z * MAP_BLOCKSIZE + p.Y) * MAP_BLOCKSIZE + p.X;
+			writeU16(os, p16);
+		}
+		data->serialize(os, version, disk);
+	}
 }
-NodeMetadata* FurnaceNodeMetadata::create(std::istream &is)
-{
-	FurnaceNodeMetadata *d = new FurnaceNodeMetadata();
 
-	d->m_inventory->deSerialize(is);
+void NodeMetadataList::deSerialize(std::istream &is,
+	IItemDefManager *item_def_mgr, bool absolute_pos)
+{
+	clear();
 
-	int temp;
-	is>>temp;
-	d->m_fuel_totaltime = (float)temp/10;
-	is>>temp;
-	d->m_fuel_time = (float)temp/10;
+	u8 version = readU8(is);
 
-	return d;
-}
-void FurnaceNodeMetadata::serializeBody(std::ostream &os)
-{
-	m_inventory->serialize(os);
-	os<<itos(m_fuel_totaltime*10)<<" ";
-	os<<itos(m_fuel_time*10)<<" ";
-}
-std::string FurnaceNodeMetadata::infoText()
-{
-	//return "Furnace";
-	if(m_fuel_time >= m_fuel_totaltime)
-	{
-		InventoryList *src_list = m_inventory->getList("src");
-		assert(src_list);
-		InventoryItem *src_item = src_list->getItem(0);
-
-		if(src_item)
-			return "Furnace is out of fuel";
-		else
-			return "Furnace is inactive";
+	if (version == 0) {
+		// Nothing
+		return;
 	}
-	else
-	{
-		std::string s = "Furnace is active (";
-		s += itos(m_fuel_time/m_fuel_totaltime*100);
-		s += "%)";
-		return s;
+
+	if (version > 2) {
+		std::string err_str = std::string(FUNCTION_NAME)
+			+ ": version " + itos(version) + " not supported";
+		infostream << err_str << std::endl;
+		throw SerializationError(err_str);
 	}
-}
-void FurnaceNodeMetadata::inventoryModified()
-{
-	dstream<<"Furnace inventory modification callback"<<std::endl;
-}
-bool FurnaceNodeMetadata::step(float dtime)
-{
-	if(dtime > 60.0)
-		dstream<<"Furnace stepping a long time ("<<dtime<<")"<<std::endl;
-	// Update at a fixed frequency
-	const float interval = 2.0;
-	m_step_accumulator += dtime;
-	bool changed = false;
-	while(m_step_accumulator > interval)
-	{
-		m_step_accumulator -= interval;
-		dtime = interval;
-
-		//dstream<<"Furnace step dtime="<<dtime<<std::endl;
-		
-		InventoryList *dst_list = m_inventory->getList("dst");
-		assert(dst_list);
-
-		InventoryList *src_list = m_inventory->getList("src");
-		assert(src_list);
-		InventoryItem *src_item = src_list->getItem(0);
-		
-		// Start only if there are free slots in dst, so that it can
-		// accomodate any result item
-		if(dst_list->getFreeSlots() > 0 && src_item && src_item->isCookable())
-		{
-			m_src_totaltime = 3;
-		}
-		else
-		{
-			m_src_time = 0;
-			m_src_totaltime = 0;
-		}
 
-		if(m_fuel_time < m_fuel_totaltime)
-		{
-			//dstream<<"Furnace is active"<<std::endl;
-			m_fuel_time += dtime;
-			m_src_time += dtime;
-			if(m_src_time >= m_src_totaltime && m_src_totaltime > 0.001
-					&& src_item)
-			{
-				InventoryItem *cookresult = src_item->createCookResult();
-				dst_list->addItem(cookresult);
-				src_list->decrementMaterials(1);
-				m_src_time = 0;
-				m_src_totaltime = 0;
-			}
-			changed = true;
-			continue;
+	u16 count = readU16(is);
+
+	for (u16 i = 0; i < count; i++) {
+		v3s16 p;
+		if (absolute_pos) {
+			p.X = readS16(is);
+			p.Y = readS16(is);
+			p.Z = readS16(is);
+		} else {
+			u16 p16 = readU16(is);
+			p.X = p16 & (MAP_BLOCKSIZE - 1);
+			p16 /= MAP_BLOCKSIZE;
+			p.Y = p16 & (MAP_BLOCKSIZE - 1);
+			p16 /= MAP_BLOCKSIZE;
+			p.Z = p16;
 		}
-		
-		if(src_item == NULL || m_src_totaltime < 0.001)
-		{
+		if (m_data.find(p) != m_data.end()) {
+			warningstream << "NodeMetadataList::deSerialize(): "
+					<< "already set data at position " << PP(p)
+					<< ": Ignoring." << std::endl;
 			continue;
 		}
-		
-		//dstream<<"Furnace is out of fuel"<<std::endl;
-
-		InventoryList *fuel_list = m_inventory->getList("fuel");
-		assert(fuel_list);
-		InventoryItem *fuel_item = fuel_list->getItem(0);
-
-		if(ItemSpec(ITEM_MATERIAL, CONTENT_TREE).checkItem(fuel_item))
-		{
-			m_fuel_totaltime = 30;
-			m_fuel_time = 0;
-			fuel_list->decrementMaterials(1);
-			changed = true;
-		}
-		else if(ItemSpec(ITEM_MATERIAL, CONTENT_WOOD).checkItem(fuel_item))
-		{
-			m_fuel_totaltime = 30/4;
-			m_fuel_time = 0;
-			fuel_list->decrementMaterials(1);
-			changed = true;
-		}
-		else if(ItemSpec(ITEM_CRAFT, "Stick").checkItem(fuel_item))
-		{
-			m_fuel_totaltime = 30/4/4;
-			m_fuel_time = 0;
-			fuel_list->decrementMaterials(1);
-			changed = true;
-		}
-		else if(ItemSpec(ITEM_CRAFT, "lump_of_coal").checkItem(fuel_item))
-		{
-			m_fuel_totaltime = 40;
-			m_fuel_time = 0;
-			fuel_list->decrementMaterials(1);
-			changed = true;
-		}
-		else
-		{
-			//dstream<<"No fuel found"<<std::endl;
-		}
+
+		NodeMetadata *data = new NodeMetadata(item_def_mgr);
+		data->deSerialize(is, version);
+		m_data[p] = data;
 	}
-	return changed;
 }
 
-/*
-	NodeMetadatalist
-*/
-
-void NodeMetadataList::serialize(std::ostream &os)
+NodeMetadataList::~NodeMetadataList()
 {
-	u8 buf[6];
-	
-	u16 version = 1;
-	writeU16(buf, version);
-	os.write((char*)buf, 2);
-
-	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);
-	}
-	
+	clear();
 }
-void NodeMetadataList::deSerialize(std::istream &is)
-{
-	m_data.clear();
-
-	u8 buf[6];
-	
-	is.read((char*)buf, 2);
-	u16 version = readU16(buf);
-
-	if(version > 1)
-	{
-		dstream<<__FUNCTION_NAME<<": version "<<version<<" not supported"
-				<<std::endl;
-		throw SerializationError("NodeMetadataList::deSerialize");
-	}
-	
-	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;
-		
-		NodeMetadata *data = NodeMetadata::deSerialize(is);
-
-		if(data == NULL)
-			continue;
-		
-		if(m_data.find(p))
-		{
-			dstream<<"WARNING: NodeMetadataList::deSerialize(): "
-					<<"already set data at position"
-					<<"("<<p.X<<","<<p.Y<<","<<p.Z<<"): Ignoring."
-					<<std::endl;
-			delete data;
-			continue;
-		}
 
-		m_data.insert(p, data);
-	}
-}
-	
-NodeMetadataList::~NodeMetadataList()
+std::vector<v3s16> NodeMetadataList::getAllKeys()
 {
-	for(core::map<v3s16, NodeMetadata*>::Iterator
-			i = m_data.getIterator();
-			i.atEnd()==false; i++)
-	{
-		delete i.getNode()->getValue();
-	}
+	std::vector<v3s16> keys;
+	keys.reserve(m_data.size());
+	for (const auto &it : m_data)
+		keys.push_back(it.first);
+
+	return keys;
 }
 
-NodeMetadata* NodeMetadataList::get(v3s16 p)
+NodeMetadata *NodeMetadataList::get(v3s16 p)
 {
-	core::map<v3s16, NodeMetadata*>::Node *n;
-	n = m_data.find(p);
-	if(n == NULL)
-		return NULL;
-	return n->getValue();
+	NodeMetadataMap::const_iterator n = m_data.find(p);
+	if (n == m_data.end())
+		return nullptr;
+	return n->second;
 }
 
 void NodeMetadataList::remove(v3s16 p)
 {
 	NodeMetadata *olddata = get(p);
-	if(olddata)
-	{
-		delete olddata;
-		m_data.remove(p);
+	if (olddata) {
+		if (m_is_metadata_owner)
+			delete olddata;
+		m_data.erase(p);
 	}
 }
 
 void NodeMetadataList::set(v3s16 p, NodeMetadata *d)
 {
 	remove(p);
-	m_data.insert(p, d);
+	m_data.emplace(p, d);
 }
 
-bool NodeMetadataList::step(float dtime)
+void NodeMetadataList::clear()
 {
-	bool something_changed = false;
-	for(core::map<v3s16, NodeMetadata*>::Iterator
-			i = m_data.getIterator();
-			i.atEnd()==false; i++)
-	{
-		v3s16 p = i.getNode()->getKey();
-		NodeMetadata *meta = i.getNode()->getValue();
-		bool changed = meta->step(dtime);
-		if(changed)
-			something_changed = true;
-		/*if(res.inventory_changed)
-		{
-			std::string inv_id;
-			inv_id += "nodemeta:";
-			inv_id += itos(p.X);
-			inv_id += ",";
-			inv_id += itos(p.Y);
-			inv_id += ",";
-			inv_id += itos(p.Z);
-			InventoryContext c;
-			c.current_player = NULL;
-			inv_mgr->inventoryModified(&c, inv_id);
-		}*/
+	if (m_is_metadata_owner) {
+		NodeMetadataMap::const_iterator it;
+		for (it = m_data.begin(); it != m_data.end(); ++it)
+			delete it->second;
 	}
-	return something_changed;
+	m_data.clear();
 }
 
+int NodeMetadataList::countNonEmpty() const
+{
+	int n = 0;
+	for (const auto &it : m_data) {
+		if (!it.second->empty())
+			n++;
+	}
+	return n;
+}