minetest/src/inventorymanager.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 "inventorymanager.h"
#include "log.h"
#include "environment.h"
#include "scriptapi.h"
#include "serverobject.h"
#include "main.h" // for g_settings
#include "settings.h"
#include "utility.h"
/*
InventoryLocation
*/
std::string InventoryLocation::dump() const
{
std::ostringstream os(std::ios::binary);
serialize(os);
return os.str();
}
void InventoryLocation::serialize(std::ostream &os) const
{
switch(type){
case InventoryLocation::UNDEFINED:
{
os<<"undefined";
}
break;
case InventoryLocation::CURRENT_PLAYER:
{
os<<"current_player";
}
break;
case InventoryLocation::PLAYER:
{
os<<"player:"<<name;
}
break;
case InventoryLocation::NODEMETA:
{
os<<"nodemeta:"<<p.X<<","<<p.Y<<","<<p.Z;
}
break;
default:
assert(0);
}
}
void InventoryLocation::deSerialize(std::istream &is)
{
std::string tname;
std::getline(is, tname, ':');
if(tname == "undefined")
{
type = InventoryLocation::UNDEFINED;
}
else if(tname == "current_player")
{
type = InventoryLocation::CURRENT_PLAYER;
}
else if(tname == "player")
{
type = InventoryLocation::PLAYER;
std::getline(is, name, '\n');
}
else if(tname == "nodemeta")
{
type = InventoryLocation::NODEMETA;
std::string pos;
std::getline(is, pos, '\n');
Strfnd fn(pos);
p.X = stoi(fn.next(","));
p.Y = stoi(fn.next(","));
p.Z = stoi(fn.next(","));
}
else
{
infostream<<"Unknown InventoryLocation type=\""<<tname<<"\""<<std::endl;
throw SerializationError("Unknown InventoryLocation type");
}
}
void InventoryLocation::deSerialize(std::string s)
{
std::istringstream is(s, std::ios::binary);
deSerialize(is);
}
/*
InventoryAction
*/
InventoryAction * InventoryAction::deSerialize(std::istream &is)
{
std::string type;
std::getline(is, type, ' ');
InventoryAction *a = NULL;
if(type == "Move")
{
a = new IMoveAction(is);
}
else if(type == "Drop")
{
a = new IDropAction(is);
}
return a;
}
IMoveAction::IMoveAction(std::istream &is)
{
std::string ts;
std::getline(is, ts, ' ');
count = stoi(ts);
std::getline(is, ts, ' ');
from_inv.deSerialize(ts);
std::getline(is, from_list, ' ');
std::getline(is, ts, ' ');
from_i = stoi(ts);
std::getline(is, ts, ' ');
to_inv.deSerialize(ts);
std::getline(is, to_list, ' ');
std::getline(is, ts, ' ');
to_i = stoi(ts);
}
void IMoveAction::apply(InventoryManager *mgr, ServerActiveObject *player)
{
Inventory *inv_from = mgr->getInventory(from_inv);
Inventory *inv_to = mgr->getInventory(to_inv);
if(!inv_from){
infostream<<"IMoveAction::apply(): FAIL: source inventory not found: "
<<"from_inv=\""<<from_inv.dump()<<"\""
<<", to_inv=\""<<to_inv.dump()<<"\""<<std::endl;
return;
}
if(!inv_to){
infostream<<"IMoveAction::apply(): FAIL: destination inventory not found: "
<<"from_inv=\""<<from_inv.dump()<<"\""
<<", to_inv=\""<<to_inv.dump()<<"\""<<std::endl;
return;
}
InventoryList *list_from = inv_from->getList(from_list);
InventoryList *list_to = inv_to->getList(to_list);
/*
If a list doesn't exist or the source item doesn't exist
*/
if(!list_from){
infostream<<"IMoveAction::apply(): FAIL: source list not found: "
<<"from_inv=\""<<from_inv.dump()<<"\""
<<", from_list=\""<<from_list<<"\""<<std::endl;
return;
}
if(!list_to){
infostream<<"IMoveAction::apply(): FAIL: destination list not found: "
<<"to_inv=\""<<to_inv.dump()<<"\""
<<", to_list=\""<<to_list<<"\""<<std::endl;
return;
}
if(list_from->getItem(from_i).empty())
{
infostream<<"IMoveAction::apply(): FAIL: source item not found: "
<<"from_inv=\""<<from_inv.dump()<<"\""
<<", from_list=\""<<from_list<<"\""
<<" from_i="<<from_i<<std::endl;
return;
}
/*
If the source and the destination slots are the same
*/
if(inv_from == inv_to && list_from == list_to && from_i == to_i)
{
infostream<<"IMoveAction::apply(): FAIL: source and destination slots "
<<"are the same: inv=\""<<from_inv.dump()
<<"\" list=\""<<from_list
<<"\" i="<<from_i<<std::endl;
return;
}
// Take item from source list
ItemStack item1;
if(count == 0)
item1 = list_from->changeItem(from_i, ItemStack());
else
item1 = list_from->takeItem(from_i, count);
// Try to add the item to destination list
int oldcount = item1.count;
item1 = list_to->addItem(to_i, item1);
// If something is returned, the item was not fully added
if(!item1.empty())
{
// If olditem is returned, nothing was added.
bool nothing_added = (item1.count == oldcount);
// If something else is returned, part of the item was left unadded.
// Add the other part back to the source item
list_from->addItem(from_i, item1);
// If olditem is returned, nothing was added.
// Swap the items
if(nothing_added)
{
// Take item from source list
item1 = list_from->changeItem(from_i, ItemStack());
// Adding was not possible, swap the items.
ItemStack item2 = list_to->changeItem(to_i, item1);
// Put item from destination list to the source list
list_from->changeItem(from_i, item2);
}
}
mgr->setInventoryModified(from_inv);
if(inv_from != inv_to)
mgr->setInventoryModified(to_inv);
infostream<<"IMoveAction::apply(): moved at "
<<" count="<<count<<"\""
<<" from inv=\""<<from_inv.dump()<<"\""
<<" list=\""<<from_list<<"\""
<<" i="<<from_i
<<" to inv=\""<<to_inv.dump()<<"\""
<<" list=\""<<to_list<<"\""
<<" i="<<to_i
<<std::endl;
}
IDropAction::IDropAction(std::istream &is)
{
std::string ts;
std::getline(is, ts, ' ');
count = stoi(ts);
std::getline(is, ts, ' ');
from_inv.deSerialize(ts);
std::getline(is, from_list, ' ');
std::getline(is, ts, ' ');
from_i = stoi(ts);
}
void IDropAction::apply(InventoryManager *mgr, ServerActiveObject *player)
{
Inventory *inv_from = mgr->getInventory(from_inv);
if(!inv_from){
infostream<<"IDropAction::apply(): FAIL: source inventory not found: "
<<"from_inv=\""<<from_inv.dump()<<"\""<<std::endl;
return;
}
InventoryList *list_from = inv_from->getList(from_list);
/*
If a list doesn't exist or the source item doesn't exist
*/
if(!list_from){
infostream<<"IDropAction::apply(): FAIL: source list not found: "
<<"from_inv=\""<<from_inv.dump()<<"\""<<std::endl;
return;
}
if(list_from->getItem(from_i).empty())
{
infostream<<"IDropAction::apply(): FAIL: source item not found: "
<<"from_inv=\""<<from_inv.dump()<<"\""
<<", from_list=\""<<from_list<<"\""
<<" from_i="<<from_i<<std::endl;
return;
}
/*
Drop the item
*/
ItemStack item = list_from->getItem(from_i);
if(scriptapi_item_on_drop(player->getEnv()->getLua(), item, player,
player->getBasePosition() + v3f(0,1,0)))
{
// Apply returned ItemStack
if(g_settings->getBool("creative_mode") == false
|| from_inv.type != InventoryLocation::PLAYER)
list_from->changeItem(from_i, item);
mgr->setInventoryModified(from_inv);
}
infostream<<"IDropAction::apply(): dropped "
<<" from inv=\""<<from_inv.dump()<<"\""
<<" list=\""<<from_list<<"\""
<<" i="<<from_i
<<std::endl;
}