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-rw-r--r--src/nodemetadata.cpp23
1 files changed, 20 insertions, 3 deletions
diff --git a/src/nodemetadata.cpp b/src/nodemetadata.cpp
index 126889ecf..0801a028b 100644
--- a/src/nodemetadata.cpp
+++ b/src/nodemetadata.cpp
@@ -74,6 +74,11 @@ void NodeMetadata::clear()
m_inventory->clear();
}
+bool NodeMetadata::empty() const
+{
+ return m_stringvars.size() == 0 && m_inventory->getLists().size() == 0;
+}
+
/*
NodeMetadataList
*/
@@ -84,14 +89,13 @@ void NodeMetadataList::serialize(std::ostream &os) const
Version 0 is a placeholder for "nothing to see here; go away."
*/
- if(m_data.empty()){
+ u16 count = countNonEmpty();
+ if (count == 0) {
writeU8(os, 0); // version
return;
}
writeU8(os, 1); // version
-
- u16 count = m_data.size();
writeU16(os, count);
for(std::map<v3s16, NodeMetadata*>::const_iterator
@@ -100,6 +104,8 @@ void NodeMetadataList::serialize(std::ostream &os) const
{
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);
@@ -200,6 +206,17 @@ void NodeMetadataList::clear()
m_data.clear();
}
+int NodeMetadataList::countNonEmpty() const
+{
+ int n = 0;
+ std::map<v3s16, NodeMetadata*>::const_iterator it;
+ for (it = m_data.begin(); it != m_data.end(); ++it) {
+ if (!it->second->empty())
+ n++;
+ }
+ return n;
+}
+
std::string NodeMetadata::getString(const std::string &name,
unsigned short recursion) const
{