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/*
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 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 Lesser General Public License for more details.
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 "exceptions.h"
#include "gamedef.h"
#include "inventory.h"
#include "log.h"
#include "util/serialize.h"
#include "constants.h" // MAP_BLOCKSIZE
#include <sstream>
/*
NodeMetadata
*/
NodeMetadata::NodeMetadata(IGameDef *gamedef):
m_stringvars(),
m_inventory(new Inventory(gamedef->idef()))
{
}
NodeMetadata::~NodeMetadata()
{
delete m_inventory;
}
void NodeMetadata::serialize(std::ostream &os) const
{
int num_vars = m_stringvars.size();
writeU32(os, num_vars);
for(std::map<std::string, std::string>::const_iterator
i = m_stringvars.begin(); i != m_stringvars.end(); i++){
os<<serializeString(i->first);
os<<serializeLongString(i->second);
}
m_inventory->serialize(os);
}
void NodeMetadata::deSerialize(std::istream &is)
{
m_stringvars.clear();
int num_vars = readU32(is);
for(int i=0; i<num_vars; i++){
std::string name = deSerializeString(is);
std::string var = deSerializeLongString(is);
m_stringvars[name] = var;
}
m_inventory->deSerialize(is);
}
void NodeMetadata::clear()
{
m_stringvars.clear();
m_inventory->clear();
}
/*
NodeMetadataList
*/
void NodeMetadataList::serialize(std::ostream &os) const
{
/*
Version 0 is a placeholder for "nothing to see here; go away."
*/
if(m_data.empty()){
writeU8(os, 0); // version
return;
}
writeU8(os, 1); // version
u16 count = m_data.size();
writeU16(os, count);
for(std::map<v3s16, NodeMetadata*>::const_iterator
i = m_data.begin();
i != m_data.end(); i++)
{
v3s16 p = i->first;
NodeMetadata *data = i->second;
u16 p16 = p.Z*MAP_BLOCKSIZE*MAP_BLOCKSIZE + p.Y*MAP_BLOCKSIZE + p.X;
writeU16(os, p16);
data->serialize(os);
}
}
void NodeMetadataList::deSerialize(std::istream &is, IGameDef *gamedef)
{
m_data.clear();
u8 version = readU8(is);
if(version == 0){
// Nothing
return;
}
if(version != 1){
infostream<<__FUNCTION_NAME<<": version "<<version<<" not supported"
<<std::endl;
throw SerializationError("NodeMetadataList::deSerialize");
}
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(m_data.find(p) != m_data.end())
{
infostream<<"WARNING: NodeMetadataList::deSerialize(): "
<<"already set data at position"
<<"("<<p.X<<","<<p.Y<<","<<p.Z<<"): Ignoring."
<<std::endl;
continue;
}
NodeMetadata *data = new NodeMetadata(gamedef);
data->deSerialize(is);
m_data[p] = data;
}
}
NodeMetadataList::~NodeMetadataList()
{
clear();
}
NodeMetadata* NodeMetadataList::get(v3s16 p)
{
std::map<v3s16, NodeMetadata*>::const_iterator n = m_data.find(p);
if(n == m_data.end())
return NULL;
return n->second;
}
void NodeMetadataList::remove(v3s16 p)
{
NodeMetadata *olddata = get(p);
if(olddata)
{
delete olddata;
m_data.erase(p);
}
}
void NodeMetadataList::set(v3s16 p, NodeMetadata *d)
{
remove(p);
m_data.insert(std::make_pair(p, d));
}
void NodeMetadataList::clear()
{
for(std::map<v3s16, NodeMetadata*>::iterator
i = m_data.begin();
i != m_data.end(); i++)
{
delete i->second;
}
m_data.clear();
}
std::string NodeMetadata::getString(const std::string &name, unsigned short recursion) const
{
std::map<std::string, std::string>::const_iterator it;
it = m_stringvars.find(name);
if (it == m_stringvars.end()) {
return "";
}
return resolveString(it->second, recursion);
}
void NodeMetadata::setString(const std::string &name, const std::string &var)
{
if (var.empty()) {
m_stringvars.erase(name);
} else {
m_stringvars[name] = var;
}
}
std::string NodeMetadata::resolveString(const std::string &str, unsigned short recursion) const
{
if (recursion > 1) {
return str;
}
if (str.substr(0, 2) == "${" && str[str.length() - 1] == '}') {
return getString(str.substr(2, str.length() - 3), recursion + 1);
}
return str;
}
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