#include "log.h"
#include "settings.h"
#include "nameidmapping.h"
+#include "util/numeric.h"
#include "util/serialize.h"
//#include "profiler.h" // For TimeTaker
public:
void clear()
{
+ m_content_features.clear();
m_name_id_mapping.clear();
m_name_id_mapping_with_aliases.clear();
+ m_group_to_items.clear();
+ m_next_id = 0;
- for(u16 i=0; i<=MAX_CONTENT; i++)
+ u32 initial_length = 0;
+ initial_length = MYMAX(initial_length, CONTENT_UNKNOWN + 1);
+ initial_length = MYMAX(initial_length, CONTENT_AIR + 1);
+ initial_length = MYMAX(initial_length, CONTENT_IGNORE + 1);
+ m_content_features.resize(initial_length);
+
+ // Set CONTENT_UNKNOWN
{
- ContentFeatures &f = m_content_features[i];
- f.reset(); // Reset to defaults
+ ContentFeatures f;
+ f.name = "unknown";
+ // Insert directly into containers
+ content_t c = CONTENT_UNKNOWN;
+ m_content_features[c] = f;
+ addNameIdMapping(c, f.name);
}
// Set CONTENT_AIR
m_content_features[c] = f;
addNameIdMapping(c, f.name);
}
+
// Set CONTENT_IGNORE
{
ContentFeatures f;
addNameIdMapping(c, f.name);
}
}
- // CONTENT_IGNORE = not found
- content_t getFreeId()
- {
- for(u32 i=0; i<=0xffff; i++){
- const ContentFeatures &f = m_content_features[i];
- if(f.name == "")
- return i;
- }
- return CONTENT_IGNORE;
- }
CNodeDefManager()
{
clear();
virtual IWritableNodeDefManager* clone()
{
CNodeDefManager *mgr = new CNodeDefManager();
- for(u16 i=0; i<=MAX_CONTENT; i++)
- {
- mgr->set(i, get(i));
- }
+ *mgr = *this;
return mgr;
}
virtual const ContentFeatures& get(content_t c) const
{
- assert(c <= MAX_CONTENT);
- return m_content_features[c];
+ if(c < m_content_features.size())
+ return m_content_features[c];
+ else
+ return m_content_features[CONTENT_UNKNOWN];
}
virtual const ContentFeatures& get(const MapNode &n) const
{
}
std::string group = name.substr(6);
-#if 1 // Optimized version, takes less than 1 microsecond at -O1
std::map<std::string, GroupItems>::const_iterator
i = m_group_to_items.find(group);
if (i == m_group_to_items.end())
if ((*j).second != 0)
result.insert((*j).first);
}
-#else // Old version, takes about ~150-200us at -O1
- for(u16 id=0; id<=MAX_CONTENT; id++)
- {
- const ContentFeatures &f = m_content_features[id];
- if(f.name == "") // Quickly discard undefined nodes
- continue;
- if(itemgroup_get(f.groups, group) != 0)
- result.insert(id);
- }
-#endif
//printf("getIds: %dus\n", t.stop());
}
virtual const ContentFeatures& get(const std::string &name) const
{
- content_t id = CONTENT_IGNORE;
+ content_t id = CONTENT_UNKNOWN;
getId(name, id);
return get(id);
}
+ // returns CONTENT_IGNORE if no free ID found
+ content_t allocateId()
+ {
+ for(content_t id = m_next_id;
+ id >= m_next_id; // overflow?
+ ++id){
+ while(id >= m_content_features.size()){
+ m_content_features.push_back(ContentFeatures());
+ }
+ const ContentFeatures &f = m_content_features[id];
+ if(f.name == ""){
+ m_next_id = id + 1;
+ return id;
+ }
+ }
+ // If we arrive here, an overflow occurred in id.
+ // That means no ID was found
+ return CONTENT_IGNORE;
+ }
// IWritableNodeDefManager
- virtual void set(content_t c, const ContentFeatures &def)
+ virtual content_t set(const std::string &name,
+ const ContentFeatures &def)
{
- verbosestream<<"registerNode: registering content id \""<<c
- <<"\": name=\""<<def.name<<"\""<<std::endl;
- assert(c <= MAX_CONTENT);
- // Don't allow redefining CONTENT_IGNORE (but allow air)
- if(def.name == "ignore" || c == CONTENT_IGNORE){
- infostream<<"registerNode: WARNING: Ignoring "
+ assert(name != "");
+ assert(name == def.name);
+
+ // Don't allow redefining ignore (but allow air and unknown)
+ if(name == "ignore"){
+ infostream<<"NodeDefManager: WARNING: Ignoring "
<<"CONTENT_IGNORE redefinition"<<std::endl;
- return;
+ return CONTENT_IGNORE;
}
- // Check that the special contents are not redefined as different id
- // because it would mess up everything
- if((def.name == "ignore" && c != CONTENT_IGNORE) ||
- (def.name == "air" && c != CONTENT_AIR)){
- errorstream<<"registerNode: IGNORING ERROR: "
- <<"trying to register built-in type \""
- <<def.name<<"\" as different id"<<std::endl;
- return;
+
+ content_t id = CONTENT_IGNORE;
+ bool found = m_name_id_mapping.getId(name, id); // ignore aliases
+ if(!found){
+ // Get new id
+ id = allocateId();
+ if(id == CONTENT_IGNORE){
+ infostream<<"NodeDefManager: WARNING: Absolute "
+ <<"limit reached"<<std::endl;
+ return CONTENT_IGNORE;
+ }
+ assert(id != CONTENT_IGNORE);
+ addNameIdMapping(id, name);
}
- m_content_features[c] = def;
- if(def.name != "")
- addNameIdMapping(c, def.name);
+ m_content_features[id] = def;
+ verbosestream<<"NodeDefManager: registering content id \""<<id
+ <<"\": name=\""<<def.name<<"\""<<std::endl;
// Add this content to the list of all groups it belongs to
+ // FIXME: This should remove a node from groups it no longer
+ // belongs to when a node is re-registered
for (ItemGroupList::const_iterator i = def.groups.begin();
i != def.groups.end(); ++i) {
std::string group_name = i->first;
std::map<std::string, GroupItems>::iterator
j = m_group_to_items.find(group_name);
if (j == m_group_to_items.end()) {
- m_group_to_items[group_name].push_back(std::make_pair(c, i->second));
+ m_group_to_items[group_name].push_back(
+ std::make_pair(id, i->second));
} else {
GroupItems &items = j->second;
- items.push_back(std::make_pair(c, i->second));
+ items.push_back(std::make_pair(id, i->second));
}
}
- }
- virtual content_t set(const std::string &name,
- const ContentFeatures &def)
- {
- assert(name == def.name);
- u16 id = CONTENT_IGNORE;
- bool found = m_name_id_mapping.getId(name, id); // ignore aliases
- if(!found){
- // Get some id
- id = getFreeId();
- if(id == CONTENT_IGNORE)
- return CONTENT_IGNORE;
- if(name != "")
- addNameIdMapping(id, name);
- }
- set(id, def);
return id;
}
virtual content_t allocateDummy(const std::string &name)
bool new_style_leaves = g_settings->getBool("new_style_leaves");
bool opaque_water = g_settings->getBool("opaque_water");
- for(u16 i=0; i<=MAX_CONTENT; i++)
+ for(u32 i=0; i<m_content_features.size(); i++)
{
ContentFeatures *f = &m_content_features[i];
writeU8(os, 1); // version
u16 count = 0;
std::ostringstream os2(std::ios::binary);
- for(u16 i=0; i<=MAX_CONTENT; i++)
+ for(u32 i=0; i<m_content_features.size(); i++)
{
- if(i == CONTENT_IGNORE || i == CONTENT_AIR)
+ if(i == CONTENT_IGNORE || i == CONTENT_AIR
+ || i == CONTENT_UNKNOWN)
continue;
ContentFeatures *f = &m_content_features[i];
if(f->name == "")
std::ostringstream wrapper_os(std::ios::binary);
f->serialize(wrapper_os, protocol_version);
os2<<serializeString(wrapper_os.str());
+
+ assert(count + 1 > count); // must not overflow
count++;
}
writeU16(os, count);
throw SerializationError("unsupported NodeDefinitionManager version");
u16 count = readU16(is);
std::istringstream is2(deSerializeLongString(is), std::ios::binary);
+ ContentFeatures f;
for(u16 n=0; n<count; n++){
u16 i = readU16(is2);
- if(i > MAX_CONTENT){
- errorstream<<"ContentFeatures::deSerialize(): "
- <<"Too large content id: "<<i<<std::endl;
- continue;
- }
- /*// Do not deserialize special types
- if(i == CONTENT_IGNORE || i == CONTENT_AIR)
- continue;*/
- ContentFeatures *f = &m_content_features[i];
+
// Read it from the string wrapper
std::string wrapper = deSerializeString(is2);
std::istringstream wrapper_is(wrapper, std::ios::binary);
- f->deSerialize(wrapper_is);
- verbosestream<<"deserialized "<<f->name<<std::endl;
- if(f->name != "")
- addNameIdMapping(i, f->name);
+ f.deSerialize(wrapper_is);
+
+ // Check error conditions
+ if(i == CONTENT_IGNORE || i == CONTENT_AIR
+ || i == CONTENT_UNKNOWN){
+ infostream<<"NodeDefManager::deSerialize(): WARNING: "
+ <<"not changing builtin node "<<i
+ <<std::endl;
+ continue;
+ }
+ if(f.name == ""){
+ infostream<<"NodeDefManager::deSerialize(): WARNING: "
+ <<"received empty name"<<std::endl;
+ continue;
+ }
+ u16 existing_id;
+ bool found = m_name_id_mapping.getId(f.name, existing_id); // ignore aliases
+ if(found && i != existing_id){
+ infostream<<"NodeDefManager::deSerialize(): WARNING: "
+ <<"already defined with different ID: "
+ <<f.name<<std::endl;
+ continue;
+ }
+
+ // All is ok, add node definition with the requested ID
+ if(i >= m_content_features.size())
+ m_content_features.resize((u32)(i) + 1);
+ m_content_features[i] = f;
+ addNameIdMapping(i, f.name);
+ verbosestream<<"deserialized "<<f.name<<std::endl;
}
}
private:
}
private:
// Features indexed by id
- ContentFeatures m_content_features[MAX_CONTENT+1];
+ std::vector<ContentFeatures> m_content_features;
// A mapping for fast converting back and forth between names and ids
NameIdMapping m_name_id_mapping;
// Like m_name_id_mapping, but only from names to ids, and includes
// that belong to it. Necessary for a direct lookup in getIds().
// Note: Not serialized.
std::map<std::string, GroupItems> m_group_to_items;
+ // Next possibly free id
+ content_t m_next_id;
};
IWritableNodeDefManager* createNodeDefManager()
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