minetest/src/nodemetadata.cpp

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/*
Minetest-c55
Copyright (C) 2010-2011 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
(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.
You should have received a copy of the GNU 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"
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#include "inventory.h"
#include <sstream>
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/*
NodeMetadata
*/
core::map<u16, NodeMetadata::Factory> NodeMetadata::m_types;
NodeMetadata::NodeMetadata()
{
}
NodeMetadata::~NodeMetadata()
{
}
NodeMetadata* NodeMetadata::deSerialize(std::istream &is)
{
// Read id
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u8 buf[2];
is.read((char*)buf, 2);
s16 id = readS16(buf);
// Read data
std::string data = deSerializeString(is);
// Find factory function
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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;
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}
// 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;
}
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}
void NodeMetadata::serialize(std::ostream &os)
{
u8 buf[2];
writeU16(buf, typeId());
os.write((char*)buf, 2);
std::ostringstream oss(std::ios_base::binary);
serializeBody(oss);
os<<serializeString(oss.str());
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}
void NodeMetadata::registerType(u16 id, Factory f)
{
core::map<u16, Factory>::Node *n;
n = m_types.find(id);
if(n)
return;
m_types.insert(id, f);
}
/*
SignNodeMetadata
*/
SignNodeMetadata::SignNodeMetadata(std::string text):
m_text(text)
{
NodeMetadata::registerType(typeId(), create);
}
u16 SignNodeMetadata::typeId() const
{
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);
}
std::string SignNodeMetadata::infoText()
{
return std::string("\"")+m_text+"\"";
}
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/*
ChestNodeMetadata
*/
ChestNodeMetadata::ChestNodeMetadata()
{
NodeMetadata::registerType(typeId(), create);
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m_inventory = new Inventory();
m_inventory->addList("0", 8*4);
}
ChestNodeMetadata::~ChestNodeMetadata()
{
delete m_inventory;
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}
u16 ChestNodeMetadata::typeId() const
{
return CONTENT_CHEST;
}
NodeMetadata* ChestNodeMetadata::create(std::istream &is)
{
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ChestNodeMetadata *d = new ChestNodeMetadata();
d->m_inventory->deSerialize(is);
return d;
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}
NodeMetadata* ChestNodeMetadata::clone()
{
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ChestNodeMetadata *d = new ChestNodeMetadata();
*d->m_inventory = *m_inventory;
return d;
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}
void ChestNodeMetadata::serializeBody(std::ostream &os)
{
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m_inventory->serialize(os);
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}
std::string ChestNodeMetadata::infoText()
{
return "Chest";
}
/*
FurnaceNodeMetadata
*/
FurnaceNodeMetadata::FurnaceNodeMetadata()
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{
NodeMetadata::registerType(typeId(), create);
m_inventory = new Inventory();
m_inventory->addList("fuel", 1);
m_inventory->addList("src", 1);
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m_inventory->addList("dst", 4);
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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;
}
NodeMetadata* FurnaceNodeMetadata::create(std::istream &is)
{
FurnaceNodeMetadata *d = new FurnaceNodeMetadata();
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d->m_inventory->deSerialize(is);
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int temp;
is>>temp;
d->m_fuel_totaltime = (float)temp/10;
is>>temp;
d->m_fuel_time = (float)temp/10;
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return d;
}
void FurnaceNodeMetadata::serializeBody(std::ostream &os)
{
m_inventory->serialize(os);
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os<<itos(m_fuel_totaltime*10)<<" ";
os<<itos(m_fuel_time*10)<<" ";
}
std::string FurnaceNodeMetadata::infoText()
{
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//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";
}
else
{
std::string s = "Furnace is active (";
s += itos(m_fuel_time/m_fuel_totaltime*100);
s += "%)";
return s;
}
}
void FurnaceNodeMetadata::inventoryModified()
{
dstream<<"Furnace inventory modification callback"<<std::endl;
}
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bool FurnaceNodeMetadata::step(float dtime)
{
// Update at a fixed frequency
const float interval = 0.5;
m_step_accumulator += dtime;
if(m_step_accumulator < interval)
return false;
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);
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// Start only if there are free slots in dst, so that it can
// accomodate any result item
if(dst_list->getFreeSlots() > 0)
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{
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)
{
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src_list->decrementMaterials(1);
InventoryItem *cookresult = src_item->createCookResult();
dst_list->addItem(cookresult);
m_src_time = 0;
m_src_totaltime = 0;
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}
return true;
}
if(src_item == NULL || m_src_totaltime < 0.001)
{
return false;
}
bool changed = false;
//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 = 10;
m_fuel_time = 0;
fuel_list->decrementMaterials(1);
changed = true;
}
else if(ItemSpec(ITEM_MATERIAL, CONTENT_WOOD).checkItem(fuel_item))
{
m_fuel_totaltime = 5;
m_fuel_time = 0;
fuel_list->decrementMaterials(1);
changed = true;
}
else if(ItemSpec(ITEM_CRAFT, "lump_of_coal").checkItem(fuel_item))
{
m_fuel_totaltime = 10;
m_fuel_time = 0;
fuel_list->decrementMaterials(1);
changed = true;
}
else
{
//dstream<<"No fuel found"<<std::endl;
}
return changed;
}
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/*
NodeMetadatalist
*/
void NodeMetadataList::serialize(std::ostream &os)
{
u8 buf[6];
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u16 version = 1;
writeU16(buf, version);
os.write((char*)buf, 2);
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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);
}
}
void NodeMetadataList::deSerialize(std::istream &is)
{
m_data.clear();
u8 buf[6];
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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");
}
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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;
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if(m_data.find(p))
{
dstream<<"WARNING: NodeMetadataList::deSerialize(): "
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<<"already set data at position"
<<"("<<p.X<<","<<p.Y<<","<<p.Z<<"): Ignoring."
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<<std::endl;
delete data;
continue;
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}
m_data.insert(p, data);
}
}
NodeMetadataList::~NodeMetadataList()
{
for(core::map<v3s16, NodeMetadata*>::Iterator
i = m_data.getIterator();
i.atEnd()==false; i++)
{
delete i.getNode()->getValue();
}
}
NodeMetadata* NodeMetadataList::get(v3s16 p)
{
core::map<v3s16, NodeMetadata*>::Node *n;
n = m_data.find(p);
if(n == NULL)
return NULL;
return n->getValue();
}
void NodeMetadataList::remove(v3s16 p)
{
NodeMetadata *olddata = get(p);
if(olddata)
{
delete olddata;
m_data.remove(p);
}
}
void NodeMetadataList::set(v3s16 p, NodeMetadata *d)
{
remove(p);
m_data.insert(p, d);
}
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bool NodeMetadataList::step(float dtime)
{
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);
}*/
}
return something_changed;
}