X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=src%2Fnodemetadata.cpp;h=6447c8785b9919fec4fb6028aacd595fc951b47b;hb=8c1871fa2c066a2086988684256da97bd0f4ab6f;hp=0e8195c343e78badc4e62f3c403c65875dc25601;hpb=071e114ffa945522a7a9acc3259427166992d5ee;p=minetest.git

diff --git a/src/nodemetadata.cpp b/src/nodemetadata.cpp
index 0e8195c34..6447c8785 100644
--- a/src/nodemetadata.cpp
+++ b/src/nodemetadata.cpp
@@ -44,15 +44,13 @@ void NodeMetadata::serialize(std::ostream &os, u8 version, bool disk) const
 {
 	int num_vars = disk ? m_stringvars.size() : countNonPrivate();
 	writeU32(os, num_vars);
-	for (StringMap::const_iterator
-			it = m_stringvars.begin();
-			it != m_stringvars.end(); ++it) {
-		bool priv = isPrivate(it->first);
+	for (const auto &sv : m_stringvars) {
+		bool priv = isPrivate(sv.first);
 		if (!disk && priv)
 			continue;
 
-		os << serializeString(it->first);
-		os << serializeLongString(it->second);
+		os << serializeString16(sv.first);
+		os << serializeString32(sv.second);
 		if (version >= 2)
 			writeU8(os, (priv) ? 1 : 0);
 	}
@@ -65,8 +63,8 @@ void NodeMetadata::deSerialize(std::istream &is, u8 version)
 	clear();
 	int num_vars = readU32(is);
 	for(int i=0; i<num_vars; i++){
-		std::string name = deSerializeString(is);
-		std::string var = deSerializeLongString(is);
+		std::string name = deSerializeString16(is);
+		std::string var = deSerializeString32(is);
 		m_stringvars[name] = var;
 		if (version >= 2) {
 			if (readU8(is) == 1)
@@ -86,7 +84,7 @@ void NodeMetadata::clear()
 
 bool NodeMetadata::empty() const
 {
-	return Metadata::empty() && m_inventory->getLists().size() == 0;
+	return Metadata::empty() && m_inventory->getLists().empty();
 }
 
 
@@ -103,10 +101,8 @@ int NodeMetadata::countNonPrivate() const
 	// m_privatevars can contain names not actually present
 	// DON'T: return m_stringvars.size() - m_privatevars.size();
 	int n = 0;
-	for (StringMap::const_iterator
-			it = m_stringvars.begin();
-			it != m_stringvars.end(); ++it) {
-		if (isPrivate(it->first) == false)
+	for (const auto &sv : m_stringvars) {
+		if (!isPrivate(sv.first))
 			n++;
 	}
 	return n;
@@ -116,7 +112,8 @@ int NodeMetadata::countNonPrivate() const
 	NodeMetadataList
 */
 
-void NodeMetadataList::serialize(std::ostream &os, u8 blockver, bool disk) const
+void NodeMetadataList::serialize(std::ostream &os, u8 blockver, bool disk,
+	bool absolute_pos) const
 {
 	/*
 		Version 0 is a placeholder for "nothing to see here; go away."
@@ -132,23 +129,29 @@ void NodeMetadataList::serialize(std::ostream &os, u8 blockver, bool disk) const
 	writeU8(os, version);
 	writeU16(os, count);
 
-	for(std::map<v3s16, NodeMetadata*>::const_iterator
+	for (NodeMetadataMap::const_iterator
 			i = m_data.begin();
-			i != m_data.end(); ++i)
-	{
+			i != m_data.end(); ++i) {
 		v3s16 p = i->first;
 		NodeMetadata *data = i->second;
 		if (data->empty())
 			continue;
 
-		u16 p16 = p.Z * MAP_BLOCKSIZE * MAP_BLOCKSIZE + p.Y * MAP_BLOCKSIZE + p.X;
-		writeU16(os, p16);
-
+		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);
 	}
 }
 
-void NodeMetadataList::deSerialize(std::istream &is, IItemDefManager *item_def_mgr)
+void NodeMetadataList::deSerialize(std::istream &is,
+	IItemDefManager *item_def_mgr, bool absolute_pos)
 {
 	clear();
 
@@ -169,15 +172,19 @@ void NodeMetadataList::deSerialize(std::istream &is, IItemDefManager *item_def_m
 	u16 count = readU16(is);
 
 	for (u16 i = 0; i < count; i++) {
-		u16 p16 = readU16(is);
-
 		v3s16 p;
-		p.Z = p16 / MAP_BLOCKSIZE / MAP_BLOCKSIZE;
-		p16 &= MAP_BLOCKSIZE * MAP_BLOCKSIZE - 1;
-		p.Y = p16 / MAP_BLOCKSIZE;
-		p16 &= MAP_BLOCKSIZE - 1;
-		p.X = p16;
-
+		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 (m_data.find(p) != m_data.end()) {
 			warningstream << "NodeMetadataList::deSerialize(): "
 					<< "already set data at position " << PP(p)
@@ -200,7 +207,7 @@ std::vector<v3s16> NodeMetadataList::getAllKeys()
 {
 	std::vector<v3s16> keys;
 
-	std::map<v3s16, NodeMetadata *>::const_iterator it;
+	NodeMetadataMap::const_iterator it;
 	for (it = m_data.begin(); it != m_data.end(); ++it)
 		keys.push_back(it->first);
 
@@ -209,7 +216,7 @@ std::vector<v3s16> NodeMetadataList::getAllKeys()
 
 NodeMetadata *NodeMetadataList::get(v3s16 p)
 {
-	std::map<v3s16, NodeMetadata *>::const_iterator n = m_data.find(p);
+	NodeMetadataMap::const_iterator n = m_data.find(p);
 	if (n == m_data.end())
 		return NULL;
 	return n->second;
@@ -219,7 +226,8 @@ void NodeMetadataList::remove(v3s16 p)
 {
 	NodeMetadata *olddata = get(p);
 	if (olddata) {
-		delete olddata;
+		if (m_is_metadata_owner)
+			delete olddata;
 		m_data.erase(p);
 	}
 }
@@ -232,9 +240,10 @@ void NodeMetadataList::set(v3s16 p, NodeMetadata *d)
 
 void NodeMetadataList::clear()
 {
-	std::map<v3s16, NodeMetadata*>::iterator it;
-	for (it = m_data.begin(); it != m_data.end(); ++it) {
-		delete it->second;
+	if (m_is_metadata_owner) {
+		NodeMetadataMap::const_iterator it;
+		for (it = m_data.begin(); it != m_data.end(); ++it)
+			delete it->second;
 	}
 	m_data.clear();
 }
@@ -242,7 +251,7 @@ void NodeMetadataList::clear()
 int NodeMetadataList::countNonEmpty() const
 {
 	int n = 0;
-	std::map<v3s16, NodeMetadata*>::const_iterator it;
+	NodeMetadataMap::const_iterator it;
 	for (it = m_data.begin(); it != m_data.end(); ++it) {
 		if (!it->second->empty())
 			n++;