minetest/src/inventory.cpp

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/*
Minetest-c55
Copyright (C) 2010 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.
*/
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/*
(c) 2010 Perttu Ahola <celeron55@gmail.com>
*/
#include "inventory.h"
#include "serialization.h"
#include "utility.h"
#include "debug.h"
#include <sstream>
#include "main.h"
/*
InventoryItem
*/
InventoryItem::InventoryItem(u16 count)
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{
m_count = count;
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}
InventoryItem::~InventoryItem()
{
}
InventoryItem* InventoryItem::deSerialize(std::istream &is)
{
DSTACK(__FUNCTION_NAME);
//is.imbue(std::locale("C"));
// Read name
std::string name;
std::getline(is, name, ' ');
if(name == "MaterialItem")
{
// u16 reads directly as a number (u8 doesn't)
u16 material;
is>>material;
u16 count;
is>>count;
if(material > 255)
throw SerializationError("Too large material number");
return new MaterialItem(material, count);
}
else if(name == "MBOItem")
{
std::string inventorystring;
std::getline(is, inventorystring, '|');
return new MapBlockObjectItem(inventorystring);
}
else if(name == "CraftItem")
{
std::string subname;
std::getline(is, subname, ' ');
u16 count;
is>>count;
return new CraftItem(subname, count);
}
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else if(name == "ToolItem")
{
std::string toolname;
std::getline(is, toolname, ' ');
u16 wear;
is>>wear;
return new ToolItem(toolname, wear);
}
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else
{
dstream<<"Unknown InventoryItem name=\""<<name<<"\""<<std::endl;
throw SerializationError("Unknown InventoryItem name");
}
}
/*
MapBlockObjectItem
*/
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#ifndef SERVER
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video::ITexture * MapBlockObjectItem::getImage()
{
if(m_inventorystring.substr(0,3) == "Rat")
//return g_device->getVideoDriver()->getTexture(porting::getDataPath("rat.png").c_str());
return g_irrlicht->getTexture(porting::getDataPath("rat.png").c_str());
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if(m_inventorystring.substr(0,4) == "Sign")
//return g_device->getVideoDriver()->getTexture(porting::getDataPath("sign.png").c_str());
return g_irrlicht->getTexture(porting::getDataPath("sign.png").c_str());
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return NULL;
}
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#endif
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std::string MapBlockObjectItem::getText()
{
if(m_inventorystring.substr(0,3) == "Rat")
return "";
if(m_inventorystring.substr(0,4) == "Sign")
return "";
return "obj";
}
MapBlockObject * MapBlockObjectItem::createObject
(v3f pos, f32 player_yaw, f32 player_pitch)
{
std::istringstream is(m_inventorystring);
std::string name;
std::getline(is, name, ' ');
if(name == "None")
{
return NULL;
}
else if(name == "Sign")
{
std::string text;
std::getline(is, text, '|');
SignObject *obj = new SignObject(NULL, -1, pos);
obj->setText(text);
obj->setYaw(-player_yaw);
return obj;
}
else if(name == "Rat")
{
RatObject *obj = new RatObject(NULL, -1, pos);
return obj;
}
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else if(name == "ItemObj")
{
/*
Now we are an inventory item containing the serialization
string of an object that contains the serialization
string of an inventory item. Fuck this.
*/
//assert(0);
dstream<<__FUNCTION_NAME<<": WARNING: Ignoring ItemObj "
<<"because an item-object should never be inside "
<<"an object-item."<<std::endl;
return NULL;
}
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else
{
return NULL;
}
}
/*
Inventory
*/
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InventoryList::InventoryList(std::string name, u32 size)
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{
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m_name = name;
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m_size = size;
clearItems();
}
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InventoryList::~InventoryList()
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{
for(u32 i=0; i<m_items.size(); i++)
{
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if(m_items[i])
delete m_items[i];
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}
}
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void InventoryList::clearItems()
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{
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for(u32 i=0; i<m_items.size(); i++)
{
if(m_items[i])
delete m_items[i];
}
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m_items.clear();
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for(u32 i=0; i<m_size; i++)
{
m_items.push_back(NULL);
}
}
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void InventoryList::serialize(std::ostream &os)
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{
//os.imbue(std::locale("C"));
for(u32 i=0; i<m_items.size(); i++)
{
InventoryItem *item = m_items[i];
if(item != NULL)
{
os<<"Item ";
item->serialize(os);
}
else
{
os<<"Empty";
}
os<<"\n";
}
os<<"EndInventoryList\n";
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}
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void InventoryList::deSerialize(std::istream &is)
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{
//is.imbue(std::locale("C"));
clearItems();
u32 item_i = 0;
for(;;)
{
std::string line;
std::getline(is, line, '\n');
std::istringstream iss(line);
//iss.imbue(std::locale("C"));
std::string name;
std::getline(iss, name, ' ');
if(name == "EndInventoryList")
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{
break;
}
else if(name == "Item")
{
if(item_i > getSize() - 1)
throw SerializationError("too many items");
InventoryItem *item = InventoryItem::deSerialize(iss);
m_items[item_i++] = item;
}
else if(name == "Empty")
{
if(item_i > getSize() - 1)
throw SerializationError("too many items");
m_items[item_i++] = NULL;
}
else
{
throw SerializationError("Unknown inventory identifier");
}
}
}
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InventoryList::InventoryList(const InventoryList &other)
{
/*
Do this so that the items get cloned. Otherwise the pointers
in the array will just get copied.
*/
*this = other;
}
InventoryList & InventoryList::operator = (const InventoryList &other)
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{
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m_name = other.m_name;
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m_size = other.m_size;
clearItems();
for(u32 i=0; i<other.m_items.size(); i++)
{
InventoryItem *item = other.m_items[i];
if(item != NULL)
{
m_items[i] = item->clone();
}
}
return *this;
}
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std::string InventoryList::getName()
{
return m_name;
}
u32 InventoryList::getSize()
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{
return m_items.size();
}
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u32 InventoryList::getUsedSlots()
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{
u32 num = 0;
for(u32 i=0; i<m_items.size(); i++)
{
InventoryItem *item = m_items[i];
if(item != NULL)
num++;
}
return num;
}
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InventoryItem * InventoryList::getItem(u32 i)
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{
if(i > m_items.size() - 1)
return NULL;
return m_items[i];
}
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InventoryItem * InventoryList::changeItem(u32 i, InventoryItem *newitem)
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{
assert(i < m_items.size());
InventoryItem *olditem = m_items[i];
m_items[i] = newitem;
return olditem;
}
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void InventoryList::deleteItem(u32 i)
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{
assert(i < m_items.size());
InventoryItem *item = changeItem(i, NULL);
if(item)
delete item;
}
InventoryItem * InventoryList::addItem(InventoryItem *newitem)
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{
/*
First try to find if it could be added to some existing items
*/
for(u32 i=0; i<m_items.size(); i++)
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{
// Ignore empty slots
if(m_items[i] == NULL)
continue;
// Try adding
newitem = addItem(i, newitem);
if(newitem == NULL)
return NULL; // All was eaten
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}
/*
Then try to add it to empty slots
*/
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for(u32 i=0; i<m_items.size(); i++)
{
// Ignore unempty slots
if(m_items[i] != NULL)
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continue;
// Try adding
newitem = addItem(i, newitem);
if(newitem == NULL)
return NULL; // All was eaten
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}
// Return leftover
return newitem;
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}
InventoryItem * InventoryList::addItem(u32 i, InventoryItem *newitem)
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{
// If it is an empty position, it's an easy job.
InventoryItem *to_item = m_items[i];
if(to_item == NULL)
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{
m_items[i] = newitem;
return NULL;
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}
// If not addable, return the item
if(newitem->addableTo(to_item) == false)
return newitem;
// If the item fits fully in the slot, add counter and delete it
if(newitem->getCount() <= to_item->freeSpace())
{
to_item->add(newitem->getCount());
delete newitem;
return NULL;
}
// Else the item does not fit fully. Add all that fits and return
// the rest.
else
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{
u16 freespace = to_item->freeSpace();
to_item->add(freespace);
newitem->remove(freespace);
return newitem;
}
}
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InventoryItem * InventoryList::takeItem(u32 i, u32 count)
{
if(count == 0)
return NULL;
InventoryItem *item = m_items[i];
// If it is an empty position, return NULL
if(item == NULL)
return NULL;
if(count >= item->getCount())
{
// Get the item by swapping NULL to its place
return changeItem(i, NULL);
}
else
{
InventoryItem *item2 = item->clone();
item->remove(count);
item2->setCount(count);
return item2;
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}
return false;
}
void InventoryList::decrementMaterials(u16 count)
{
for(u32 i=0; i<m_items.size(); i++)
{
InventoryItem *item = takeItem(i, count);
if(item)
delete item;
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}
}
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void InventoryList::print(std::ostream &o)
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{
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o<<"InventoryList:"<<std::endl;
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for(u32 i=0; i<m_items.size(); i++)
{
InventoryItem *item = m_items[i];
if(item != NULL)
{
o<<i<<": ";
item->serialize(o);
o<<"\n";
}
}
}
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/*
Inventory
*/
Inventory::~Inventory()
{
clear();
}
void Inventory::clear()
{
for(u32 i=0; i<m_lists.size(); i++)
{
delete m_lists[i];
}
m_lists.clear();
}
Inventory::Inventory()
{
}
Inventory::Inventory(const Inventory &other)
{
*this = other;
}
Inventory & Inventory::operator = (const Inventory &other)
{
clear();
for(u32 i=0; i<other.m_lists.size(); i++)
{
m_lists.push_back(new InventoryList(*other.m_lists[i]));
}
return *this;
}
void Inventory::serialize(std::ostream &os)
{
for(u32 i=0; i<m_lists.size(); i++)
{
InventoryList *list = m_lists[i];
os<<"List "<<list->getName()<<" "<<list->getSize()<<"\n";
list->serialize(os);
}
os<<"EndInventory\n";
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}
void Inventory::deSerialize(std::istream &is)
{
clear();
for(;;)
{
std::string line;
std::getline(is, line, '\n');
std::istringstream iss(line);
std::string name;
std::getline(iss, name, ' ');
if(name == "EndInventory")
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{
break;
}
else if(name == "List")
{
std::string listname;
u32 listsize;
std::getline(iss, listname, ' ');
iss>>listsize;
InventoryList *list = new InventoryList(listname, listsize);
list->deSerialize(is);
m_lists.push_back(list);
}
else
{
throw SerializationError("Unknown inventory identifier");
}
}
}
InventoryList * Inventory::addList(const std::string &name, u32 size)
{
s32 i = getListIndex(name);
if(i != -1)
{
if(m_lists[i]->getSize() != size)
{
delete m_lists[i];
m_lists[i] = new InventoryList(name, size);
}
return m_lists[i];
}
else
{
m_lists.push_back(new InventoryList(name, size));
return m_lists.getLast();
}
}
InventoryList * Inventory::getList(const std::string &name)
{
s32 i = getListIndex(name);
if(i == -1)
return NULL;
return m_lists[i];
}
s32 Inventory::getListIndex(const std::string &name)
{
for(u32 i=0; i<m_lists.size(); i++)
{
if(m_lists[i]->getName() == name)
return i;
}
return -1;
}
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/*
InventoryAction
*/
InventoryAction * InventoryAction::deSerialize(std::istream &is)
{
std::string type;
std::getline(is, type, ' ');
InventoryAction *a = NULL;
if(type == "Move")
{
a = new IMoveAction(is);
}
return a;
}
void IMoveAction::apply(Inventory *inventory)
{
/*dstream<<"from_name="<<from_name<<" to_name="<<to_name<<std::endl;
dstream<<"from_i="<<from_i<<" to_i="<<to_i<<std::endl;*/
InventoryList *list_from = inventory->getList(from_name);
InventoryList *list_to = inventory->getList(to_name);
/*dstream<<"list_from="<<list_from<<" list_to="<<list_to
<<std::endl;*/
/*if(list_from)
dstream<<" list_from->getItem(from_i)="<<list_from->getItem(from_i)
<<std::endl;
if(list_to)
dstream<<" list_to->getItem(to_i)="<<list_to->getItem(to_i)
<<std::endl;*/
/*
If a list doesn't exist or the source item doesn't exist
or the source and the destination slots are the same
*/
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if(!list_from || !list_to || list_from->getItem(from_i) == NULL
|| (list_from == list_to && from_i == to_i))
{
dstream<<__FUNCTION_NAME<<": Operation not allowed"<<std::endl;
return;
}
// Take item from source list
InventoryItem *item1 = NULL;
if(count == 0)
item1 = list_from->changeItem(from_i, NULL);
else
item1 = list_from->takeItem(from_i, count);
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// Try to add the item to destination list
InventoryItem *olditem = item1;
item1 = list_to->addItem(to_i, item1);
// If nothing is returned, the item was fully added
if(item1 == NULL)
return;
// If olditem is returned, nothing was added.
bool nothing_added = (item1 == olditem);
// 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, NULL);
// Adding was not possible, swap the items.
InventoryItem *item2 = list_to->changeItem(to_i, item1);
// Put item from destination list to the source list
list_from->changeItem(from_i, item2);
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return;
}
}
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//END