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diff --git a/src/inventorymanager.cpp b/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 "serverremoteplayer.h"
+#include "log.h"
+#include "mapblock.h" // getNodeBlockPos
+
+/*
+ InventoryManager
+*/
+
+// Wrapper for old code
+Inventory* InventoryManager::getInventory(InventoryContext *c, std::string id)
+{
+ if(id == "current_player")
+ {
+ assert(c->current_player);
+ InventoryLocation loc;
+ loc.setPlayer(c->current_player->getName());
+ return getInventory(loc);
+ }
+
+ Strfnd fn(id);
+ std::string id0 = fn.next(":");
+
+ if(id0 == "nodemeta")
+ {
+ v3s16 p;
+ p.X = stoi(fn.next(","));
+ p.Y = stoi(fn.next(","));
+ p.Z = stoi(fn.next(","));
+
+ InventoryLocation loc;
+ loc.setNodeMeta(p);
+ return getInventory(loc);
+ }
+
+ errorstream<<__FUNCTION_NAME<<": unknown id "<<id<<std::endl;
+ return NULL;
+}
+// Wrapper for old code
+void InventoryManager::inventoryModified(InventoryContext *c, std::string id)
+{
+ if(id == "current_player")
+ {
+ assert(c->current_player);
+ InventoryLocation loc;
+ loc.setPlayer(c->current_player->getName());
+ setInventoryModified(loc);
+ return;
+ }
+
+ Strfnd fn(id);
+ std::string id0 = fn.next(":");
+
+ if(id0 == "nodemeta")
+ {
+ v3s16 p;
+ p.X = stoi(fn.next(","));
+ p.Y = stoi(fn.next(","));
+ p.Z = stoi(fn.next(","));
+ v3s16 blockpos = getNodeBlockPos(p);
+
+ InventoryLocation loc;
+ loc.setNodeMeta(p);
+ setInventoryModified(loc);
+ return;
+ }
+
+ errorstream<<__FUNCTION_NAME<<": unknown id "<<id<<std::endl;
+}
+
+/*
+ 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;
+}
+
+static std::string describeC(const struct InventoryContext *c)
+{
+ if(c->current_player == NULL)
+ return "current_player=NULL";
+ else
+ return std::string("current_player=") + c->current_player->getName();
+}
+
+IMoveAction::IMoveAction(std::istream &is)
+{
+ std::string ts;
+
+ std::getline(is, ts, ' ');
+ count = stoi(ts);
+
+ std::getline(is, from_inv, ' ');
+
+ std::getline(is, from_list, ' ');
+
+ std::getline(is, ts, ' ');
+ from_i = stoi(ts);
+
+ std::getline(is, to_inv, ' ');
+
+ std::getline(is, to_list, ' ');
+
+ std::getline(is, ts, ' ');
+ to_i = stoi(ts);
+}
+
+void IMoveAction::apply(InventoryContext *c, InventoryManager *mgr,
+ ServerEnvironment *env)
+{
+ Inventory *inv_from = mgr->getInventory(c, from_inv);
+ Inventory *inv_to = mgr->getInventory(c, to_inv);
+
+ if(!inv_from){
+ infostream<<"IMoveAction::apply(): FAIL: source inventory not found: "
+ <<"context=["<<describeC(c)<<"], from_inv=\""<<from_inv<<"\""
+ <<", to_inv=\""<<to_inv<<"\""<<std::endl;
+ return;
+ }
+ if(!inv_to){
+ infostream<<"IMoveAction::apply(): FAIL: destination inventory not found: "
+ "context=["<<describeC(c)<<"], from_inv=\""<<from_inv<<"\""
+ <<", to_inv=\""<<to_inv<<"\""<<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: "
+ <<"context=["<<describeC(c)<<"], from_inv=\""<<from_inv<<"\""
+ <<", from_list=\""<<from_list<<"\""<<std::endl;
+ return;
+ }
+ if(!list_to){
+ infostream<<"IMoveAction::apply(): FAIL: destination list not found: "
+ <<"context=["<<describeC(c)<<"], to_inv=\""<<to_inv<<"\""
+ <<", to_list=\""<<to_list<<"\""<<std::endl;
+ return;
+ }
+ if(list_from->getItem(from_i) == NULL)
+ {
+ infostream<<"IMoveAction::apply(): FAIL: source item not found: "
+ <<"context=["<<describeC(c)<<"], from_inv=\""<<from_inv<<"\""
+ <<", 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<<"\" list=\""<<from_list
+ <<"\" i="<<from_i<<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);
+
+ // Try to add the item to destination list
+ InventoryItem *olditem = item1;
+ item1 = list_to->addItem(to_i, item1);
+
+ // If something is returned, the item was not fully added
+ if(item1 != NULL)
+ {
+ // 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);
+ }
+ }
+
+ mgr->inventoryModified(c, from_inv);
+ if(from_inv != to_inv)
+ mgr->inventoryModified(c, to_inv);
+
+ infostream<<"IMoveAction::apply(): moved at "
+ <<"["<<describeC(c)<<"]"
+ <<" from inv=\""<<from_inv<<"\""
+ <<" list=\""<<from_list<<"\""
+ <<" i="<<from_i
+ <<" to inv=\""<<to_inv<<"\""
+ <<" 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, from_inv, ' ');
+
+ std::getline(is, from_list, ' ');
+
+ std::getline(is, ts, ' ');
+ from_i = stoi(ts);
+}
+
+void IDropAction::apply(InventoryContext *c, InventoryManager *mgr,
+ ServerEnvironment *env)
+{
+ if(c->current_player == NULL){
+ infostream<<"IDropAction::apply(): FAIL: current_player is NULL"<<std::endl;
+ return;
+ }
+
+ // Do NOT cast directly to ServerActiveObject*, it breaks
+ // because of multiple inheritance.
+ ServerActiveObject *dropper =
+ static_cast<ServerActiveObject*>(
+ static_cast<ServerRemotePlayer*>(
+ c->current_player
+ ));
+
+ Inventory *inv_from = mgr->getInventory(c, from_inv);
+
+ if(!inv_from){
+ infostream<<"IDropAction::apply(): FAIL: source inventory not found: "
+ <<"context=["<<describeC(c)<<"], from_inv=\""<<from_inv<<"\""<<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: "
+ <<"context=["<<describeC(c)<<"], from_inv=\""<<from_inv<<"\""
+ <<", from_list=\""<<from_list<<"\""<<std::endl;
+ return;
+ }
+ InventoryItem *item = list_from->getItem(from_i);
+ if(item == NULL)
+ {
+ infostream<<"IDropAction::apply(): FAIL: source item not found: "
+ <<"context=["<<describeC(c)<<"], from_inv=\""<<from_inv<<"\""
+ <<", from_list=\""<<from_list<<"\""
+ <<" from_i="<<from_i<<std::endl;
+ return;
+ }
+
+ v3f pos = dropper->getBasePosition();
+ pos.Y += 0.5*BS;
+
+ s16 count2 = count;
+ if(count2 == 0)
+ count2 = -1;
+
+ /*
+ Drop the item
+ */
+ bool remove = item->dropOrPlace(env, dropper, pos, false, count2);
+ if(remove)
+ list_from->deleteItem(from_i);
+
+ mgr->inventoryModified(c, from_inv);
+
+ infostream<<"IDropAction::apply(): dropped "
+ <<"["<<describeC(c)<<"]"
+ <<" from inv=\""<<from_inv<<"\""
+ <<" list=\""<<from_list<<"\""
+ <<" i="<<from_i
+ <<std::endl;
+}
+
+/*
+ Craft checking system
+*/
+
+bool ItemSpec::checkItem(const InventoryItem *item) const
+{
+ if(type == ITEM_NONE)
+ {
+ // Has to be no item
+ if(item != NULL)
+ return false;
+ return true;
+ }
+
+ // There should be an item
+ if(item == NULL)
+ return false;
+
+ std::string itemname = item->getName();
+
+ if(type == ITEM_MATERIAL)
+ {
+ if(itemname != "MaterialItem")
+ return false;
+ MaterialItem *mitem = (MaterialItem*)item;
+ if(num != 65535){
+ if(mitem->getMaterial() != num)
+ return false;
+ } else {
+ if(mitem->getNodeName() != name)
+ return false;
+ }
+ }
+ else if(type == ITEM_CRAFT)
+ {
+ if(itemname != "CraftItem")
+ return false;
+ CraftItem *mitem = (CraftItem*)item;
+ if(mitem->getSubName() != name)
+ return false;
+ }
+ else if(type == ITEM_TOOL)
+ {
+ // Not supported yet
+ assert(0);
+ }
+ else if(type == ITEM_MBO)
+ {
+ // Not supported yet
+ assert(0);
+ }
+ else
+ {
+ // Not supported yet
+ assert(0);
+ }
+ return true;
+}
+
+bool checkItemCombination(InventoryItem const * const *items, const ItemSpec *specs)
+{
+ u16 items_min_x = 100;
+ u16 items_max_x = 100;
+ u16 items_min_y = 100;
+ u16 items_max_y = 100;
+ for(u16 y=0; y<3; y++)
+ for(u16 x=0; x<3; x++)
+ {
+ if(items[y*3 + x] == NULL)
+ continue;
+ if(items_min_x == 100 || x < items_min_x)
+ items_min_x = x;
+ if(items_min_y == 100 || y < items_min_y)
+ items_min_y = y;
+ if(items_max_x == 100 || x > items_max_x)
+ items_max_x = x;
+ if(items_max_y == 100 || y > items_max_y)
+ items_max_y = y;
+ }
+ // No items at all, just return false
+ if(items_min_x == 100)
+ return false;
+
+ u16 items_w = items_max_x - items_min_x + 1;
+ u16 items_h = items_max_y - items_min_y + 1;
+
+ u16 specs_min_x = 100;
+ u16 specs_max_x = 100;
+ u16 specs_min_y = 100;
+ u16 specs_max_y = 100;
+ for(u16 y=0; y<3; y++)
+ for(u16 x=0; x<3; x++)
+ {
+ if(specs[y*3 + x].type == ITEM_NONE)
+ continue;
+ if(specs_min_x == 100 || x < specs_min_x)
+ specs_min_x = x;
+ if(specs_min_y == 100 || y < specs_min_y)
+ specs_min_y = y;
+ if(specs_max_x == 100 || x > specs_max_x)
+ specs_max_x = x;
+ if(specs_max_y == 100 || y > specs_max_y)
+ specs_max_y = y;
+ }
+ // No specs at all, just return false
+ if(specs_min_x == 100)
+ return false;
+
+ u16 specs_w = specs_max_x - specs_min_x + 1;
+ u16 specs_h = specs_max_y - specs_min_y + 1;
+
+ // Different sizes
+ if(items_w != specs_w || items_h != specs_h)
+ return false;
+
+ for(u16 y=0; y<specs_h; y++)
+ for(u16 x=0; x<specs_w; x++)
+ {
+ u16 items_x = items_min_x + x;
+ u16 items_y = items_min_y + y;
+ u16 specs_x = specs_min_x + x;
+ u16 specs_y = specs_min_y + y;
+ const InventoryItem *item = items[items_y * 3 + items_x];
+ const ItemSpec &spec = specs[specs_y * 3 + specs_x];
+
+ if(spec.checkItem(item) == false)
+ return false;
+ }
+
+ return true;
+}
+
+bool checkItemCombination(const InventoryItem * const * items,
+ const InventoryItem * const * specs)
+{
+ u16 items_min_x = 100;
+ u16 items_max_x = 100;
+ u16 items_min_y = 100;
+ u16 items_max_y = 100;
+ for(u16 y=0; y<3; y++)
+ for(u16 x=0; x<3; x++)
+ {
+ if(items[y*3 + x] == NULL)
+ continue;
+ if(items_min_x == 100 || x < items_min_x)
+ items_min_x = x;
+ if(items_min_y == 100 || y < items_min_y)
+ items_min_y = y;
+ if(items_max_x == 100 || x > items_max_x)
+ items_max_x = x;
+ if(items_max_y == 100 || y > items_max_y)
+ items_max_y = y;
+ }
+ // No items at all, just return false
+ if(items_min_x == 100)
+ return false;
+
+ u16 items_w = items_max_x - items_min_x + 1;
+ u16 items_h = items_max_y - items_min_y + 1;
+
+ u16 specs_min_x = 100;
+ u16 specs_max_x = 100;
+ u16 specs_min_y = 100;
+ u16 specs_max_y = 100;
+ for(u16 y=0; y<3; y++)
+ for(u16 x=0; x<3; x++)
+ {
+ if(specs[y*3 + x] == NULL)
+ continue;
+ if(specs_min_x == 100 || x < specs_min_x)
+ specs_min_x = x;
+ if(specs_min_y == 100 || y < specs_min_y)
+ specs_min_y = y;
+ if(specs_max_x == 100 || x > specs_max_x)
+ specs_max_x = x;
+ if(specs_max_y == 100 || y > specs_max_y)
+ specs_max_y = y;
+ }
+ // No specs at all, just return false
+ if(specs_min_x == 100)
+ return false;
+
+ u16 specs_w = specs_max_x - specs_min_x + 1;
+ u16 specs_h = specs_max_y - specs_min_y + 1;
+
+ // Different sizes
+ if(items_w != specs_w || items_h != specs_h)
+ return false;
+
+ for(u16 y=0; y<specs_h; y++)
+ for(u16 x=0; x<specs_w; x++)
+ {
+ u16 items_x = items_min_x + x;
+ u16 items_y = items_min_y + y;
+ u16 specs_x = specs_min_x + x;
+ u16 specs_y = specs_min_y + y;
+ const InventoryItem *item = items[items_y * 3 + items_x];
+ const InventoryItem *spec = specs[specs_y * 3 + specs_x];
+
+ if(item == NULL && spec == NULL)
+ continue;
+ if(item == NULL && spec != NULL)
+ return false;
+ if(item != NULL && spec == NULL)
+ return false;
+ if(!spec->isSubsetOf(item))
+ return false;
+ }
+
+ return true;
+}
+
+