mirror of
https://github.com/minetest/minetest.git
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482 lines
9.8 KiB
C++
482 lines
9.8 KiB
C++
/*
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Minetest-c55
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Copyright (C) 2010-2011 celeron55, Perttu Ahola <celeron55@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "nodemetadata.h"
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#include "utility.h"
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#include "mapnode.h"
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#include "exceptions.h"
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#include "inventory.h"
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#include <sstream>
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/*
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NodeMetadata
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*/
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core::map<u16, NodeMetadata::Factory> NodeMetadata::m_types;
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NodeMetadata::NodeMetadata()
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{
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}
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NodeMetadata::~NodeMetadata()
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{
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}
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NodeMetadata* NodeMetadata::deSerialize(std::istream &is)
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{
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// Read id
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u8 buf[2];
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is.read((char*)buf, 2);
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s16 id = readS16(buf);
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// Read data
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std::string data = deSerializeString(is);
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// Find factory function
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core::map<u16, Factory>::Node *n;
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n = m_types.find(id);
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if(n == NULL)
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{
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// If factory is not found, just return.
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dstream<<"WARNING: NodeMetadata: No factory for typeId="
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<<id<<std::endl;
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return NULL;
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}
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// Try to load the metadata. If it fails, just return.
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try
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{
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std::istringstream iss(data, std::ios_base::binary);
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Factory f = n->getValue();
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NodeMetadata *meta = (*f)(iss);
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return meta;
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}
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catch(SerializationError &e)
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{
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dstream<<"WARNING: NodeMetadata: ignoring SerializationError"<<std::endl;
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return NULL;
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}
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}
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void NodeMetadata::serialize(std::ostream &os)
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{
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u8 buf[2];
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writeU16(buf, typeId());
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os.write((char*)buf, 2);
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std::ostringstream oss(std::ios_base::binary);
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serializeBody(oss);
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os<<serializeString(oss.str());
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}
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void NodeMetadata::registerType(u16 id, Factory f)
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{
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core::map<u16, Factory>::Node *n;
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n = m_types.find(id);
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if(n)
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return;
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m_types.insert(id, f);
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}
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/*
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SignNodeMetadata
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*/
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SignNodeMetadata::SignNodeMetadata(std::string text):
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m_text(text)
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{
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NodeMetadata::registerType(typeId(), create);
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}
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u16 SignNodeMetadata::typeId() const
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{
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return CONTENT_SIGN_WALL;
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}
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NodeMetadata* SignNodeMetadata::create(std::istream &is)
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{
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std::string text = deSerializeString(is);
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return new SignNodeMetadata(text);
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}
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NodeMetadata* SignNodeMetadata::clone()
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{
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return new SignNodeMetadata(m_text);
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}
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void SignNodeMetadata::serializeBody(std::ostream &os)
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{
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os<<serializeString(m_text);
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}
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std::string SignNodeMetadata::infoText()
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{
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return std::string("\"")+m_text+"\"";
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}
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/*
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ChestNodeMetadata
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*/
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ChestNodeMetadata::ChestNodeMetadata()
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{
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NodeMetadata::registerType(typeId(), create);
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m_inventory = new Inventory();
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m_inventory->addList("0", 8*4);
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}
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ChestNodeMetadata::~ChestNodeMetadata()
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{
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delete m_inventory;
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}
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u16 ChestNodeMetadata::typeId() const
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{
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return CONTENT_CHEST;
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}
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NodeMetadata* ChestNodeMetadata::create(std::istream &is)
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{
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ChestNodeMetadata *d = new ChestNodeMetadata();
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d->m_inventory->deSerialize(is);
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return d;
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}
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NodeMetadata* ChestNodeMetadata::clone()
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{
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ChestNodeMetadata *d = new ChestNodeMetadata();
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*d->m_inventory = *m_inventory;
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return d;
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}
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void ChestNodeMetadata::serializeBody(std::ostream &os)
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{
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m_inventory->serialize(os);
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}
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std::string ChestNodeMetadata::infoText()
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{
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return "Chest";
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}
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/*
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FurnaceNodeMetadata
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*/
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FurnaceNodeMetadata::FurnaceNodeMetadata()
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{
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NodeMetadata::registerType(typeId(), create);
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m_inventory = new Inventory();
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m_inventory->addList("fuel", 1);
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m_inventory->addList("src", 1);
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m_inventory->addList("dst", 4);
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m_step_accumulator = 0;
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m_fuel_totaltime = 0;
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m_fuel_time = 0;
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m_src_totaltime = 0;
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m_src_time = 0;
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}
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FurnaceNodeMetadata::~FurnaceNodeMetadata()
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{
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delete m_inventory;
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}
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u16 FurnaceNodeMetadata::typeId() const
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{
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return CONTENT_FURNACE;
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}
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NodeMetadata* FurnaceNodeMetadata::clone()
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{
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FurnaceNodeMetadata *d = new FurnaceNodeMetadata();
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*d->m_inventory = *m_inventory;
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return d;
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}
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NodeMetadata* FurnaceNodeMetadata::create(std::istream &is)
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{
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FurnaceNodeMetadata *d = new FurnaceNodeMetadata();
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d->m_inventory->deSerialize(is);
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int temp;
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is>>temp;
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d->m_fuel_totaltime = (float)temp/10;
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is>>temp;
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d->m_fuel_time = (float)temp/10;
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return d;
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}
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void FurnaceNodeMetadata::serializeBody(std::ostream &os)
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{
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m_inventory->serialize(os);
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os<<itos(m_fuel_totaltime*10)<<" ";
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os<<itos(m_fuel_time*10)<<" ";
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}
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std::string FurnaceNodeMetadata::infoText()
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{
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//return "Furnace";
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if(m_fuel_time >= m_fuel_totaltime)
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{
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InventoryList *src_list = m_inventory->getList("src");
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assert(src_list);
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InventoryItem *src_item = src_list->getItem(0);
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if(src_item)
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return "Furnace is out of fuel";
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else
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return "Furnace is inactive";
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}
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else
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{
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std::string s = "Furnace is active (";
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s += itos(m_fuel_time/m_fuel_totaltime*100);
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s += "%)";
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return s;
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}
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}
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void FurnaceNodeMetadata::inventoryModified()
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{
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dstream<<"Furnace inventory modification callback"<<std::endl;
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}
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bool FurnaceNodeMetadata::step(float dtime)
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{
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// Update at a fixed frequency
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const float interval = 0.5;
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m_step_accumulator += dtime;
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if(m_step_accumulator < interval)
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return false;
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m_step_accumulator -= interval;
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dtime = interval;
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//dstream<<"Furnace step dtime="<<dtime<<std::endl;
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InventoryList *dst_list = m_inventory->getList("dst");
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assert(dst_list);
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InventoryList *src_list = m_inventory->getList("src");
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assert(src_list);
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InventoryItem *src_item = src_list->getItem(0);
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// Start only if there are free slots in dst, so that it can
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// accomodate any result item
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if(dst_list->getFreeSlots() > 0)
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{
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m_src_totaltime = 3;
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}
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else
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{
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m_src_time = 0;
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m_src_totaltime = 0;
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}
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if(m_fuel_time < m_fuel_totaltime)
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{
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//dstream<<"Furnace is active"<<std::endl;
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m_fuel_time += dtime;
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m_src_time += dtime;
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if(m_src_time >= m_src_totaltime && m_src_totaltime > 0.001)
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{
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src_list->decrementMaterials(1);
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InventoryItem *cookresult = src_item->createCookResult();
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dst_list->addItem(cookresult);
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m_src_time = 0;
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m_src_totaltime = 0;
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}
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return true;
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}
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if(src_item == NULL || m_src_totaltime < 0.001)
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{
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return false;
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}
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bool changed = false;
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//dstream<<"Furnace is out of fuel"<<std::endl;
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InventoryList *fuel_list = m_inventory->getList("fuel");
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assert(fuel_list);
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InventoryItem *fuel_item = fuel_list->getItem(0);
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if(ItemSpec(ITEM_MATERIAL, CONTENT_TREE).checkItem(fuel_item))
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{
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m_fuel_totaltime = 10;
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m_fuel_time = 0;
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fuel_list->decrementMaterials(1);
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changed = true;
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}
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else if(ItemSpec(ITEM_MATERIAL, CONTENT_WOOD).checkItem(fuel_item))
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{
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m_fuel_totaltime = 5;
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m_fuel_time = 0;
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fuel_list->decrementMaterials(1);
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changed = true;
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}
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else if(ItemSpec(ITEM_CRAFT, "lump_of_coal").checkItem(fuel_item))
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{
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m_fuel_totaltime = 10;
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m_fuel_time = 0;
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fuel_list->decrementMaterials(1);
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changed = true;
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}
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else
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{
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//dstream<<"No fuel found"<<std::endl;
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}
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return changed;
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}
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/*
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NodeMetadatalist
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*/
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void NodeMetadataList::serialize(std::ostream &os)
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{
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u8 buf[6];
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u16 version = 1;
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writeU16(buf, version);
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os.write((char*)buf, 2);
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u16 count = m_data.size();
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writeU16(buf, count);
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os.write((char*)buf, 2);
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for(core::map<v3s16, NodeMetadata*>::Iterator
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i = m_data.getIterator();
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i.atEnd()==false; i++)
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{
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v3s16 p = i.getNode()->getKey();
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NodeMetadata *data = i.getNode()->getValue();
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u16 p16 = p.Z*MAP_BLOCKSIZE*MAP_BLOCKSIZE + p.Y*MAP_BLOCKSIZE + p.X;
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writeU16(buf, p16);
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os.write((char*)buf, 2);
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data->serialize(os);
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}
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}
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void NodeMetadataList::deSerialize(std::istream &is)
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{
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m_data.clear();
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u8 buf[6];
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is.read((char*)buf, 2);
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u16 version = readU16(buf);
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if(version > 1)
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{
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dstream<<__FUNCTION_NAME<<": version "<<version<<" not supported"
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<<std::endl;
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throw SerializationError("NodeMetadataList::deSerialize");
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}
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is.read((char*)buf, 2);
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u16 count = readU16(buf);
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for(u16 i=0; i<count; i++)
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{
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is.read((char*)buf, 2);
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u16 p16 = readU16(buf);
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v3s16 p(0,0,0);
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p.Z += p16 / MAP_BLOCKSIZE / MAP_BLOCKSIZE;
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p16 -= p.Z * MAP_BLOCKSIZE * MAP_BLOCKSIZE;
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p.Y += p16 / MAP_BLOCKSIZE;
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p16 -= p.Y * MAP_BLOCKSIZE;
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p.X += p16;
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NodeMetadata *data = NodeMetadata::deSerialize(is);
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if(data == NULL)
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continue;
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if(m_data.find(p))
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{
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dstream<<"WARNING: NodeMetadataList::deSerialize(): "
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<<"already set data at position"
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<<"("<<p.X<<","<<p.Y<<","<<p.Z<<"): Ignoring."
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<<std::endl;
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delete data;
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continue;
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}
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m_data.insert(p, data);
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}
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}
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NodeMetadataList::~NodeMetadataList()
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{
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for(core::map<v3s16, NodeMetadata*>::Iterator
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i = m_data.getIterator();
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i.atEnd()==false; i++)
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{
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delete i.getNode()->getValue();
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}
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}
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NodeMetadata* NodeMetadataList::get(v3s16 p)
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{
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core::map<v3s16, NodeMetadata*>::Node *n;
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n = m_data.find(p);
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if(n == NULL)
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return NULL;
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return n->getValue();
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}
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void NodeMetadataList::remove(v3s16 p)
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{
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NodeMetadata *olddata = get(p);
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if(olddata)
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{
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delete olddata;
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m_data.remove(p);
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}
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}
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void NodeMetadataList::set(v3s16 p, NodeMetadata *d)
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{
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remove(p);
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m_data.insert(p, d);
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}
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bool NodeMetadataList::step(float dtime)
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{
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bool something_changed = false;
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for(core::map<v3s16, NodeMetadata*>::Iterator
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i = m_data.getIterator();
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i.atEnd()==false; i++)
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{
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v3s16 p = i.getNode()->getKey();
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NodeMetadata *meta = i.getNode()->getValue();
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bool changed = meta->step(dtime);
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if(changed)
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something_changed = true;
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/*if(res.inventory_changed)
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{
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std::string inv_id;
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inv_id += "nodemeta:";
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inv_id += itos(p.X);
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inv_id += ",";
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inv_id += itos(p.Y);
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inv_id += ",";
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inv_id += itos(p.Z);
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InventoryContext c;
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c.current_player = NULL;
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inv_mgr->inventoryModified(&c, inv_id);
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}*/
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}
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return something_changed;
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}
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