]> git.lizzy.rs Git - minetest.git/blobdiff - src/inventorymanager.cpp
Add callback on_mapblocks_changed
[minetest.git] / src / inventorymanager.cpp
index 1369cb0d7c402caafcb7251381b406643cbff4e4..913c959ce22b958937943d01a2ce19313e040d97 100644 (file)
@@ -1,6 +1,6 @@
 /*
-Minetest-c55
-Copyright (C) 2010-2011 celeron55, Perttu Ahola <celeron55@gmail.com>
+Minetest
+Copyright (C) 2010-2013 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 Lesser General Public License as published by
@@ -18,15 +18,18 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 */
 
 #include "inventorymanager.h"
+#include "debug.h"
 #include "log.h"
-#include "environment.h"
-#include "scriptapi.h"
-#include "serverobject.h"
-#include "main.h"  // for g_settings
+#include "serverenvironment.h"
+#include "scripting_server.h"
+#include "server/serveractiveobject.h"
 #include "settings.h"
 #include "craftdef.h"
+#include "rollback_interface.h"
+#include "util/strfnd.h"
+#include "util/basic_macros.h"
 
-#define PP(x) "("<<(x).X<<","<<(x).Y<<","<<(x).Z<<")"
+#define PLAYER_TO_SA(p)   p->getEnv()->getScriptIface()
 
 /*
        InventoryLocation
@@ -41,46 +44,39 @@ std::string InventoryLocation::dump() const
 
 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;
-    case InventoryLocation::DETACHED:
-        os<<"detached:"<<name;
-        break;
-    default:
-        assert(0);
-    }
+       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;
+       case InventoryLocation::DETACHED:
+               os<<"detached:"<<name;
+               break;
+       default:
+               FATAL_ERROR("Unhandled inventory location type");
+       }
 }
 
 void InventoryLocation::deSerialize(std::istream &is)
 {
        std::string tname;
        std::getline(is, tname, ':');
-       if(tname == "undefined")
-       {
+       if (tname == "undefined") {
                type = InventoryLocation::UNDEFINED;
-       }
-       else if(tname == "current_player")
-       {
+       } else if (tname == "current_player") {
                type = InventoryLocation::CURRENT_PLAYER;
-       }
-       else if(tname == "player")
-       {
+       } else if (tname == "player") {
                type = InventoryLocation::PLAYER;
                std::getline(is, name, '\n');
-       }
-       else if(tname == "nodemeta")
-       {
+       } else if (tname == "nodemeta") {
                type = InventoryLocation::NODEMETA;
                std::string pos;
                std::getline(is, pos, '\n');
@@ -88,20 +84,16 @@ void InventoryLocation::deSerialize(std::istream &is)
                p.X = stoi(fn.next(","));
                p.Y = stoi(fn.next(","));
                p.Z = stoi(fn.next(","));
-       }
-       else if(tname == "detached")
-       {
+       } else if (tname == "detached") {
                type = InventoryLocation::DETACHED;
                std::getline(is, name, '\n');
-       }
-       else
-       {
+       } else {
                infostream<<"Unknown InventoryLocation type=\""<<tname<<"\""<<std::endl;
                throw SerializationError("Unknown InventoryLocation type");
        }
 }
 
-void InventoryLocation::deSerialize(std::string s)
+void InventoryLocation::deSerialize(const std::string &s)
 {
        std::istringstream is(s, std::ios::binary);
        deSerialize(is);
@@ -111,23 +103,20 @@ void InventoryLocation::deSerialize(std::string s)
        InventoryAction
 */
 
-InventoryAction * InventoryAction::deSerialize(std::istream &is)
+InventoryAction *InventoryAction::deSerialize(std::istream &is)
 {
        std::string type;
        std::getline(is, type, ' ');
 
-       InventoryAction *a = NULL;
+       InventoryAction *a = nullptr;
 
-       if(type == "Move")
-       {
-               a = new IMoveAction(is);
-       }
-       else if(type == "Drop")
-       {
+       if (type == "Move") {
+               a = new IMoveAction(is, false);
+       } else if (type == "MoveSomewhere") {
+               a = new IMoveAction(is, true);
+       } else if (type == "Drop") {
                a = new IDropAction(is);
-       }
-       else if(type == "Craft")
-       {
+       } else if (type == "Craft") {
                a = new ICraftAction(is);
        }
 
@@ -138,7 +127,8 @@ InventoryAction * InventoryAction::deSerialize(std::istream &is)
        IMoveAction
 */
 
-IMoveAction::IMoveAction(std::istream &is)
+IMoveAction::IMoveAction(std::istream &is, bool somewhere) :
+               move_somewhere(somewhere)
 {
        std::string ts;
 
@@ -158,25 +148,114 @@ IMoveAction::IMoveAction(std::istream &is)
 
        std::getline(is, to_list, ' ');
 
-       std::getline(is, ts, ' ');
-       to_i = stoi(ts);
+       if (!somewhere) {
+               std::getline(is, ts, ' ');
+               to_i = stoi(ts);
+       }
+}
+
+void IMoveAction::swapDirections()
+{
+       std::swap(from_inv, to_inv);
+       std::swap(from_list, to_list);
+       std::swap(from_i, to_i);
+}
+
+void IMoveAction::onPutAndOnTake(const ItemStack &src_item, ServerActiveObject *player) const
+{
+       ServerScripting *sa = PLAYER_TO_SA(player);
+       if (to_inv.type == InventoryLocation::DETACHED)
+               sa->detached_inventory_OnPut(*this, src_item, player);
+       else if (to_inv.type == InventoryLocation::NODEMETA)
+               sa->nodemeta_inventory_OnPut(*this, src_item, player);
+       else if (to_inv.type == InventoryLocation::PLAYER)
+               sa->player_inventory_OnPut(*this, src_item, player);
+       else
+               assert(false);
+
+       if (from_inv.type == InventoryLocation::DETACHED)
+               sa->detached_inventory_OnTake(*this, src_item, player);
+       else if (from_inv.type == InventoryLocation::NODEMETA)
+               sa->nodemeta_inventory_OnTake(*this, src_item, player);
+       else if (from_inv.type == InventoryLocation::PLAYER)
+               sa->player_inventory_OnTake(*this, src_item, player);
+       else
+               assert(false);
+}
+
+void IMoveAction::onMove(int count, ServerActiveObject *player) const
+{
+       ServerScripting *sa = PLAYER_TO_SA(player);
+       if (from_inv.type == InventoryLocation::DETACHED)
+               sa->detached_inventory_OnMove(*this, count, player);
+       else if (from_inv.type == InventoryLocation::NODEMETA)
+               sa->nodemeta_inventory_OnMove(*this, count, player);
+       else if (from_inv.type == InventoryLocation::PLAYER)
+               sa->player_inventory_OnMove(*this, count, player);
+       else
+               assert(false);
+}
+
+int IMoveAction::allowPut(const ItemStack &dst_item, ServerActiveObject *player) const
+{
+       ServerScripting *sa = PLAYER_TO_SA(player);
+       int dst_can_put_count = 0xffff;
+       if (to_inv.type == InventoryLocation::DETACHED)
+               dst_can_put_count = sa->detached_inventory_AllowPut(*this, dst_item, player);
+       else if (to_inv.type == InventoryLocation::NODEMETA)
+               dst_can_put_count = sa->nodemeta_inventory_AllowPut(*this, dst_item, player);
+       else if (to_inv.type == InventoryLocation::PLAYER)
+               dst_can_put_count = sa->player_inventory_AllowPut(*this, dst_item, player);
+       else
+               assert(false);
+       return dst_can_put_count;
+}
+
+int IMoveAction::allowTake(const ItemStack &src_item, ServerActiveObject *player) const
+{
+       ServerScripting *sa = PLAYER_TO_SA(player);
+       int src_can_take_count = 0xffff;
+       if (from_inv.type == InventoryLocation::DETACHED)
+               src_can_take_count = sa->detached_inventory_AllowTake(*this, src_item, player);
+       else if (from_inv.type == InventoryLocation::NODEMETA)
+               src_can_take_count = sa->nodemeta_inventory_AllowTake(*this, src_item, player);
+       else if (from_inv.type == InventoryLocation::PLAYER)
+               src_can_take_count = sa->player_inventory_AllowTake(*this, src_item, player);
+       else
+               assert(false);
+       return src_can_take_count;
+}
+
+int IMoveAction::allowMove(int try_take_count, ServerActiveObject *player) const
+{
+       ServerScripting *sa = PLAYER_TO_SA(player);
+       int src_can_take_count = 0xffff;
+       if (from_inv.type == InventoryLocation::DETACHED)
+               src_can_take_count = sa->detached_inventory_AllowMove(*this, try_take_count, player);
+       else if (from_inv.type == InventoryLocation::NODEMETA)
+               src_can_take_count = sa->nodemeta_inventory_AllowMove(*this, try_take_count, player);
+       else if (from_inv.type == InventoryLocation::PLAYER)
+               src_can_take_count = sa->player_inventory_AllowMove(*this, try_take_count, player);
+       else
+               assert(false);
+       return src_can_take_count;
 }
 
 void IMoveAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGameDef *gamedef)
 {
        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;
+
+       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;
+       if (!inv_to) {
+               infostream << "IMoveAction::apply(): FAIL: destination inventory not found: "
+                       << "from_inv=\"" << from_inv.dump() << "\""
+                       << ", to_inv=\"" << to_inv.dump() << "\"" << std::endl;
                return;
        }
 
@@ -186,90 +265,195 @@ void IMoveAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGame
        /*
                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;
+       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 (move_somewhere) {
+               s16 old_to_i = to_i;
+               u16 old_count = count;
+               caused_by_move_somewhere = true;
+               move_somewhere = false;
+
+               infostream << "IMoveAction::apply(): moving item somewhere"
+                       << " msom=" << move_somewhere
+                       << " count=" << count
+                       << " from inv=\"" << from_inv.dump() << "\""
+                       << " list=\"" << from_list << "\""
+                       << " i=" << from_i
+                       << " to inv=\"" << to_inv.dump() << "\""
+                       << " list=\"" << to_list << "\""
+                       << std::endl;
+
+               // Try to add the item to destination list
+               s16 dest_size = list_to->getSize();
+               // First try all the non-empty slots
+               for (s16 dest_i = 0; dest_i < dest_size && count > 0; dest_i++) {
+                       if (!list_to->getItem(dest_i).empty()) {
+                               to_i = dest_i;
+                               apply(mgr, player, gamedef);
+                               assert(move_count <= count);
+                               count -= move_count;
+                       }
+               }
+
+               // Then try all the empty ones
+               for (s16 dest_i = 0; dest_i < dest_size && count > 0; dest_i++) {
+                       if (list_to->getItem(dest_i).empty()) {
+                               to_i = dest_i;
+                               apply(mgr, player, gamedef);
+                               count -= move_count;
+                       }
+               }
+
+               to_i = old_to_i;
+               count = old_count;
+               caused_by_move_somewhere = false;
+               move_somewhere = true;
                return;
        }
-       if(!list_to){
-               infostream<<"IMoveAction::apply(): FAIL: destination list not found: "
-                               <<"to_inv=\""<<to_inv.dump()<<"\""
-                               <<", to_list=\""<<to_list<<"\""<<std::endl;
+
+       if (from_i < 0 || list_from->getSize() <= (u32) from_i) {
+               infostream << "IMoveAction::apply(): FAIL: source index out of bounds: "
+                       << "size of from_list=\"" << list_from->getSize() << "\""
+                       << ", from_index=\"" << from_i << "\"" << std::endl;
                return;
        }
-       
-       // Handle node metadata move
-       if(from_inv.type == InventoryLocation::NODEMETA &&
-                       to_inv.type == InventoryLocation::NODEMETA &&
-                       from_inv.p != to_inv.p)
-       {
-               errorstream<<"Directly moving items between two nodes is "
-                               <<"disallowed."<<std::endl;
+
+       if (to_i < 0 || list_to->getSize() <= (u32) to_i) {
+               infostream << "IMoveAction::apply(): FAIL: destination index out of bounds: "
+                       << "size of to_list=\"" << list_to->getSize() << "\""
+                       << ", to_index=\"" << to_i << "\"" << std::endl;
                return;
        }
-       else if(from_inv.type == InventoryLocation::NODEMETA &&
-                       to_inv.type == InventoryLocation::NODEMETA &&
-                       from_inv.p == to_inv.p)
-       {
-               lua_State *L = player->getEnv()->getLua();
-               int count0 = count;
-               if(count0 == 0)
-                       count0 = list_from->getItem(from_i).count;
-               infostream<<player->getDescription()<<" moving "<<count0
-                               <<" items inside node at "<<PP(from_inv.p)<<std::endl;
-               scriptapi_node_on_metadata_inventory_move(L, from_inv.p,
-                               from_list, from_i, to_list, to_i, count0, player);
-       }
-       // Handle node metadata take
-       else if(from_inv.type == InventoryLocation::NODEMETA)
-       {
-               lua_State *L = player->getEnv()->getLua();
-               int count0 = count;
-               if(count0 == 0)
-                       count0 = list_from->getItem(from_i).count;
-               infostream<<player->getDescription()<<" taking "<<count0
-                               <<" items from node at "<<PP(from_inv.p)<<std::endl;
-               ItemStack return_stack = scriptapi_node_on_metadata_inventory_take(
-                               L, from_inv.p, from_list, from_i, count0, player);
-               if(return_stack.count == 0)
-                       infostream<<"Node metadata gave no items"<<std::endl;
-               return_stack = list_to->addItem(to_i, return_stack);
-               list_to->addItem(return_stack); // Force return of everything
-       }
-       // Handle node metadata offer
-       else if(to_inv.type == InventoryLocation::NODEMETA)
-       {
-               lua_State *L = player->getEnv()->getLua();
-               int count0 = count;
-               if(count0 == 0)
-                       count0 = list_from->getItem(from_i).count;
-               ItemStack offer_stack = list_from->takeItem(from_i, count0);
-               infostream<<player->getDescription()<<" offering "
-                               <<offer_stack.count<<" items to node at "
-                               <<PP(to_inv.p)<<std::endl;
-               ItemStack reject_stack = scriptapi_node_on_metadata_inventory_offer(
-                               L, to_inv.p, to_list, to_i, offer_stack, player);
-               if(reject_stack.count == offer_stack.count)
-                       infostream<<"Node metadata rejected all items"<<std::endl;
-               else if(reject_stack.count != 0)
-                       infostream<<"Node metadata rejected some items"<<std::endl;
-               reject_stack = list_from->addItem(from_i, reject_stack);
-               list_from->addItem(reject_stack); // Force return of everything
-       }
-       // Handle regular move
-       else
-       {
-               /*
-                       This performs the actual movement
 
-                       If something is wrong (source item is empty, destination is the
-                       same as source), nothing happens
-               */
-               list_from->moveItem(from_i, list_to, to_i, count);
+       /*
+               Do not handle rollback if both inventories are that of the same player
+       */
+       bool ignore_rollback = (
+               from_inv.type == InventoryLocation::PLAYER &&
+               from_inv == to_inv);
+
+       /*
+               Collect information of endpoints
+       */
+
+       ItemStack src_item = list_from->getItem(from_i);
+       if (count > 0 && count < src_item.count)
+               src_item.count = count;
+       if (src_item.empty())
+               return;
+
+       int src_can_take_count = 0xffff;
+       int dst_can_put_count = 0xffff;
+
+       // this is needed for swapping items inside one inventory to work
+       ItemStack restitem;
+       bool allow_swap = !list_to->itemFits(to_i, src_item, &restitem)
+               && restitem.count == src_item.count
+               && !caused_by_move_somewhere;
+       move_count = src_item.count - restitem.count;
+
+       // Shift-click: Cannot fill this stack, proceed with next slot
+       if (caused_by_move_somewhere && move_count == 0) {
+               return;
+       }
+
+       if (allow_swap) {
+               // Swap will affect the entire stack if it can performed.
+               src_item = list_from->getItem(from_i);
+               count = src_item.count;
+       }
+
+       if (from_inv == to_inv) {
+               // Move action within the same inventory
+               src_can_take_count = allowMove(src_item.count, player);
+
+               bool swap_expected = allow_swap;
+               allow_swap = allow_swap
+                       && (src_can_take_count == -1 || src_can_take_count >= src_item.count);
+               if (allow_swap) {
+                       int try_put_count = list_to->getItem(to_i).count;
+                       swapDirections();
+                       dst_can_put_count = allowMove(try_put_count, player);
+                       allow_swap = allow_swap
+                               && (dst_can_put_count == -1 || dst_can_put_count >= try_put_count);
+                       swapDirections();
+               } else {
+                       dst_can_put_count = src_can_take_count;
+               }
+               if (swap_expected != allow_swap)
+                       src_can_take_count = dst_can_put_count = 0;
+       } else {
+               // Take from one inventory, put into another
+               int src_item_count = src_item.count;
+               if (caused_by_move_somewhere)
+                       // When moving somewhere: temporarily use the actual movable stack
+                       // size to ensure correct callback execution.
+                       src_item.count = move_count;
+               dst_can_put_count = allowPut(src_item, player);
+               src_can_take_count = allowTake(src_item, player);
+               if (caused_by_move_somewhere)
+                       // Reset source item count
+                       src_item.count = src_item_count;
+               bool swap_expected = allow_swap;
+               allow_swap = allow_swap
+                       && (src_can_take_count == -1 || src_can_take_count >= src_item.count)
+                       && (dst_can_put_count == -1 || dst_can_put_count >= src_item.count);
+               // A swap is expected, which means that we have to
+               // run the "allow" callbacks a second time with swapped inventories
+               if (allow_swap) {
+                       ItemStack dst_item = list_to->getItem(to_i);
+                       swapDirections();
+
+                       int src_can_take = allowPut(dst_item, player);
+                       int dst_can_put = allowTake(dst_item, player);
+                       allow_swap = allow_swap
+                               && (src_can_take == -1 || src_can_take >= dst_item.count)
+                               && (dst_can_put == -1 || dst_can_put >= dst_item.count);
+                       swapDirections();
+               }
+               if (swap_expected != allow_swap)
+                       src_can_take_count = dst_can_put_count = 0;
+       }
 
-               infostream<<"IMoveAction::apply(): moved "
-                               <<" count="<<count
+       int old_count = count;
+
+       /* Modify count according to collected data */
+       count = src_item.count;
+       if (src_can_take_count != -1 && count > src_can_take_count)
+               count = src_can_take_count;
+       if (dst_can_put_count != -1 && count > dst_can_put_count)
+               count = dst_can_put_count;
+
+       /* Limit according to source item count */
+       if (count > list_from->getItem(from_i).count)
+               count = list_from->getItem(from_i).count;
+
+       /* If no items will be moved, don't go further */
+       if (count == 0) {
+               if (caused_by_move_somewhere)
+                       // Set move count to zero, as no items have been moved
+                       move_count = 0;
+
+               // Undo client prediction. See 'clientApply'
+               if (from_inv.type == InventoryLocation::PLAYER)
+                       list_from->setModified();
+
+               if (to_inv.type == InventoryLocation::PLAYER)
+                       list_to->setModified();
+
+               infostream<<"IMoveAction::apply(): move was completely disallowed:"
+                               <<" count="<<old_count
                                <<" from inv=\""<<from_inv.dump()<<"\""
                                <<" list=\""<<from_list<<"\""
                                <<" i="<<from_i
@@ -277,11 +461,147 @@ void IMoveAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGame
                                <<" list=\""<<to_list<<"\""
                                <<" i="<<to_i
                                <<std::endl;
+
+               return;
        }
 
-       mgr->setInventoryModified(from_inv);
-       if(inv_from != inv_to)
+       src_item = list_from->getItem(from_i);
+       src_item.count = count;
+       ItemStack from_stack_was = list_from->getItem(from_i);
+       ItemStack to_stack_was = list_to->getItem(to_i);
+
+       /*
+               Perform actual move
+
+               If something is wrong (source item is empty, destination is the
+               same as source), nothing happens
+       */
+       bool did_swap = false;
+       move_count = list_from->moveItem(from_i,
+               list_to, to_i, count, allow_swap, &did_swap);
+       if (caused_by_move_somewhere)
+               count = old_count;
+       assert(allow_swap == did_swap);
+
+       // If source is infinite, reset it's stack
+       if (src_can_take_count == -1) {
+               // For the caused_by_move_somewhere == true case we didn't force-put the item,
+               // which guarantees there is no leftover, and code below would duplicate the
+               // (not replaced) to_stack_was item.
+               if (!caused_by_move_somewhere) {
+                       // If destination stack is of different type and there are leftover
+                       // items, attempt to put the leftover items to a different place in the
+                       // destination inventory.
+                       // The client-side GUI will try to guess if this happens.
+                       if (from_stack_was.name != to_stack_was.name) {
+                               for (u32 i = 0; i < list_to->getSize(); i++) {
+                                       if (list_to->getItem(i).empty()) {
+                                               list_to->changeItem(i, to_stack_was);
+                                               break;
+                                       }
+                               }
+                       }
+               }
+               if (move_count > 0 || did_swap) {
+                       list_from->deleteItem(from_i);
+                       list_from->addItem(from_i, from_stack_was);
+               }
+       }
+       // If destination is infinite, reset it's stack and take count from source
+       if (dst_can_put_count == -1) {
+               list_to->deleteItem(to_i);
+               list_to->addItem(to_i, to_stack_was);
+               list_from->deleteItem(from_i);
+               list_from->addItem(from_i, from_stack_was);
+               list_from->takeItem(from_i, count);
+       }
+
+       infostream << "IMoveAction::apply(): moved"
+                       << " msom=" << move_somewhere
+                       << " caused=" << caused_by_move_somewhere
+                       << " 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;
+
+       // If we are inside the move somewhere loop, we don't need to report
+       // anything if nothing happened
+       if (caused_by_move_somewhere && move_count == 0)
+               return;
+
+       /*
+               Record rollback information
+       */
+       if (!ignore_rollback && gamedef->rollback()) {
+               IRollbackManager *rollback = gamedef->rollback();
+
+               // If source is not infinite, record item take
+               if (src_can_take_count != -1) {
+                       RollbackAction action;
+                       std::string loc;
+                       {
+                               std::ostringstream os(std::ios::binary);
+                               from_inv.serialize(os);
+                               loc = os.str();
+                       }
+                       action.setModifyInventoryStack(loc, from_list, from_i, false,
+                                       src_item);
+                       rollback->reportAction(action);
+               }
+               // If destination is not infinite, record item put
+               if (dst_can_put_count != -1) {
+                       RollbackAction action;
+                       std::string loc;
+                       {
+                               std::ostringstream os(std::ios::binary);
+                               to_inv.serialize(os);
+                               loc = os.str();
+                       }
+                       action.setModifyInventoryStack(loc, to_list, to_i, true,
+                                       src_item);
+                       rollback->reportAction(action);
+               }
+       }
+
+       /*
+               Report move to endpoints
+       */
+
+       // Source = destination => move
+       if (from_inv == to_inv) {
+               onMove(count, player);
+               if (did_swap) {
+                       // Item is now placed in source list
+                       src_item = list_from->getItem(from_i);
+                       swapDirections();
+                       onMove(src_item.count, player);
+                       swapDirections();
+               }
+               mgr->setInventoryModified(from_inv);
+       } else {
+               int src_item_count = src_item.count;
+               if (caused_by_move_somewhere)
+                       // When moving somewhere: temporarily use the actual movable stack
+                       // size to ensure correct callback execution.
+                       src_item.count = move_count;
+               onPutAndOnTake(src_item, player);
+               if (caused_by_move_somewhere)
+                       // Reset source item count
+                       src_item.count = src_item_count;
+               if (did_swap) {
+                       // Item is now placed in source list
+                       src_item = list_from->getItem(from_i);
+                       swapDirections();
+                       onPutAndOnTake(src_item, player);
+                       swapDirections();
+               }
                mgr->setInventoryModified(to_inv);
+               mgr->setInventoryModified(from_inv);
+       }
 }
 
 void IMoveAction::clientApply(InventoryManager *mgr, IGameDef *gamedef)
@@ -291,24 +611,27 @@ void IMoveAction::clientApply(InventoryManager *mgr, IGameDef *gamedef)
 
        Inventory *inv_from = mgr->getInventory(from_inv);
        Inventory *inv_to = mgr->getInventory(to_inv);
-       if(!inv_from || !inv_to)
+       if (!inv_from || !inv_to)
                return;
 
        InventoryLocation current_player;
        current_player.setCurrentPlayer();
        Inventory *inv_player = mgr->getInventory(current_player);
-       if(inv_from != inv_player || inv_to != inv_player)
+       if (inv_from != inv_player || inv_to != inv_player)
                return;
 
        InventoryList *list_from = inv_from->getList(from_list);
        InventoryList *list_to = inv_to->getList(to_list);
-       if(!list_from || !list_to)
+       if (!list_from || !list_to)
                return;
 
-       list_from->moveItem(from_i, list_to, to_i, count);
+       if (!move_somewhere)
+               list_from->moveItem(from_i, list_to, to_i, count);
+       else
+               list_from->moveItemSomewhere(from_i, list_to, count);
 
        mgr->setInventoryModified(from_inv);
-       if(inv_from != inv_to)
+       if (inv_from != inv_to)
                mgr->setInventoryModified(to_inv);
 }
 
@@ -335,8 +658,8 @@ IDropAction::IDropAction(std::istream &is)
 void IDropAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGameDef *gamedef)
 {
        Inventory *inv_from = mgr->getInventory(from_inv);
-       
-       if(!inv_from){
+
+       if (!inv_from) {
                infostream<<"IDropAction::apply(): FAIL: source inventory not found: "
                                <<"from_inv=\""<<from_inv.dump()<<"\""<<std::endl;
                return;
@@ -347,13 +670,12 @@ void IDropAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGame
        /*
                If a list doesn't exist or the source item doesn't exist
        */
-       if(!list_from){
+       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())
-       {
+       if (list_from->getItem(from_i).empty()) {
                infostream<<"IDropAction::apply(): FAIL: source item not found: "
                                <<"from_inv=\""<<from_inv.dump()<<"\""
                                <<", from_list=\""<<from_list<<"\""
@@ -361,47 +683,74 @@ void IDropAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGame
                return;
        }
 
-       ItemStack item1;
+       /*
+               Do not handle rollback if inventory is player's
+       */
+       bool ignore_src_rollback = (from_inv.type == InventoryLocation::PLAYER);
 
-       // Handle node metadata take
-       if(from_inv.type == InventoryLocation::NODEMETA)
-       {
-               lua_State *L = player->getEnv()->getLua();
-               int count0 = count;
-               if(count0 == 0)
-                       count0 = list_from->getItem(from_i).count;
-               infostream<<player->getDescription()<<" dropping "<<count0
-                               <<" items from node at "<<PP(from_inv.p)<<std::endl;
-               ItemStack return_stack = scriptapi_node_on_metadata_inventory_take(
-                               L, from_inv.p, from_list, from_i, count0, player);
-               if(return_stack.count == 0)
-                       infostream<<"Node metadata gave no items"<<std::endl;
-               item1 = return_stack;
-       }
-       else
-       {
-               // Take item from source list
-               if(count == 0)
-                       item1 = list_from->changeItem(from_i, ItemStack());
-               else
-                       item1 = list_from->takeItem(from_i, count);
+       /*
+               Collect information of endpoints
+       */
+
+       int take_count = list_from->getItem(from_i).count;
+       if (count != 0 && count < take_count)
+               take_count = count;
+       int src_can_take_count = take_count;
+
+       ItemStack src_item = list_from->getItem(from_i);
+       src_item.count = take_count;
+
+       // Run callbacks depending on source inventory
+       switch (from_inv.type) {
+       case InventoryLocation::DETACHED:
+               src_can_take_count = PLAYER_TO_SA(player)->detached_inventory_AllowTake(
+                       *this, src_item, player);
+               break;
+       case InventoryLocation::NODEMETA:
+               src_can_take_count = PLAYER_TO_SA(player)->nodemeta_inventory_AllowTake(
+                       *this, src_item, player);
+               break;
+       case InventoryLocation::PLAYER:
+               src_can_take_count = PLAYER_TO_SA(player)->player_inventory_AllowTake(
+                       *this, src_item, player);
+               break;
+       default:
+               break;
        }
 
-       // Drop the item and apply the returned ItemStack
-       ItemStack item2 = item1;
-       if(scriptapi_item_on_drop(player->getEnv()->getLua(), item2, player,
-                               player->getBasePosition() + v3f(0,1,0)))
-       {
-               if(g_settings->getBool("creative_mode") == true
-                               && from_inv.type == InventoryLocation::PLAYER)
-                       item2 = item1;  // creative mode
+       if (src_can_take_count != -1 && src_can_take_count < take_count)
+               take_count = src_can_take_count;
+
+       // Update item due executed callbacks
+       src_item = list_from->getItem(from_i);
 
-               list_from->addItem(from_i, item2);
+       // Drop the item
+       ItemStack item1 = list_from->getItem(from_i);
+       item1.count = take_count;
+       if(PLAYER_TO_SA(player)->item_OnDrop(item1, player,
+                               player->getBasePosition())) {
+               int actually_dropped_count = take_count - item1.count;
 
-               // Unless we have put the same amount back as we took in the first place,
-               // set inventory modified flag
-               if(item2.count != item1.count)
-                       mgr->setInventoryModified(from_inv);
+               if (actually_dropped_count == 0) {
+                       infostream<<"Actually dropped no items"<<std::endl;
+
+                       // Revert client prediction. See 'clientApply'
+                       if (from_inv.type == InventoryLocation::PLAYER)
+                               list_from->setModified();
+                       return;
+               }
+
+               // If source isn't infinite
+               if (src_can_take_count != -1) {
+                       // Take item from source list
+                       ItemStack item2 = list_from->takeItem(from_i, actually_dropped_count);
+
+                       if (item2.count != actually_dropped_count)
+                               errorstream<<"Could not take dropped count of items"<<std::endl;
+               }
+
+               src_item.count = actually_dropped_count;
+               mgr->setInventoryModified(from_inv);
        }
 
        infostream<<"IDropAction::apply(): dropped "
@@ -409,6 +758,49 @@ void IDropAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGame
                        <<" list=\""<<from_list<<"\""
                        <<" i="<<from_i
                        <<std::endl;
+
+
+       /*
+               Report drop to endpoints
+       */
+
+       switch (from_inv.type) {
+       case InventoryLocation::DETACHED:
+               PLAYER_TO_SA(player)->detached_inventory_OnTake(
+                       *this, src_item, player);
+               break;
+       case InventoryLocation::NODEMETA:
+               PLAYER_TO_SA(player)->nodemeta_inventory_OnTake(
+                       *this, src_item, player);
+               break;
+       case InventoryLocation::PLAYER:
+               PLAYER_TO_SA(player)->player_inventory_OnTake(
+                       *this, src_item, player);
+               break;
+       default:
+               break;
+       }
+
+       /*
+               Record rollback information
+       */
+       if (!ignore_src_rollback && gamedef->rollback()) {
+               IRollbackManager *rollback = gamedef->rollback();
+
+               // If source is not infinite, record item take
+               if (src_can_take_count != -1) {
+                       RollbackAction action;
+                       std::string loc;
+                       {
+                               std::ostringstream os(std::ios::binary);
+                               from_inv.serialize(os);
+                               loc = os.str();
+                       }
+                       action.setModifyInventoryStack(loc, from_list, from_i,
+                                       false, src_item);
+                       rollback->reportAction(action);
+               }
+       }
 }
 
 void IDropAction::clientApply(InventoryManager *mgr, IGameDef *gamedef)
@@ -417,20 +809,20 @@ void IDropAction::clientApply(InventoryManager *mgr, IGameDef *gamedef)
        // to make lag less apparent.
 
        Inventory *inv_from = mgr->getInventory(from_inv);
-       if(!inv_from)
+       if (!inv_from)
                return;
 
        InventoryLocation current_player;
        current_player.setCurrentPlayer();
        Inventory *inv_player = mgr->getInventory(current_player);
-       if(inv_from != inv_player)
+       if (inv_from != inv_player)
                return;
 
        InventoryList *list_from = inv_from->getList(from_list);
-       if(!list_from)
+       if (!list_from)
                return;
 
-       if(count == 0)
+       if (count == 0)
                list_from->changeItem(from_i, ItemStack());
        else
                list_from->takeItem(from_i, count);
@@ -453,62 +845,108 @@ ICraftAction::ICraftAction(std::istream &is)
        craft_inv.deSerialize(ts);
 }
 
-void ICraftAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGameDef *gamedef)
+void ICraftAction::apply(InventoryManager *mgr,
+       ServerActiveObject *player, IGameDef *gamedef)
 {
        Inventory *inv_craft = mgr->getInventory(craft_inv);
-       
-       if(!inv_craft){
-               infostream<<"ICraftAction::apply(): FAIL: inventory not found: "
-                               <<"craft_inv=\""<<craft_inv.dump()<<"\""<<std::endl;
+
+       if (!inv_craft) {
+               infostream << "ICraftAction::apply(): FAIL: inventory not found: "
+                               << "craft_inv=\"" << craft_inv.dump() << "\"" << std::endl;
                return;
        }
 
        InventoryList *list_craft = inv_craft->getList("craft");
        InventoryList *list_craftresult = inv_craft->getList("craftresult");
+       InventoryList *list_main = inv_craft->getList("main");
 
        /*
                If a list doesn't exist or the source item doesn't exist
        */
-       if(!list_craft){
-               infostream<<"ICraftAction::apply(): FAIL: craft list not found: "
-                               <<"craft_inv=\""<<craft_inv.dump()<<"\""<<std::endl;
+       if (!list_craft) {
+               infostream << "ICraftAction::apply(): FAIL: craft list not found: "
+                               << "craft_inv=\"" << craft_inv.dump() << "\"" << std::endl;
                return;
        }
-       if(!list_craftresult){
-               infostream<<"ICraftAction::apply(): FAIL: craftresult list not found: "
-                               <<"craft_inv=\""<<craft_inv.dump()<<"\""<<std::endl;
+       if (!list_craftresult) {
+               infostream << "ICraftAction::apply(): FAIL: craftresult list not found: "
+                               << "craft_inv=\"" << craft_inv.dump() << "\"" << std::endl;
                return;
        }
-       if(list_craftresult->getSize() < 1){
-               infostream<<"ICraftAction::apply(): FAIL: craftresult list too short: "
-                               <<"craft_inv=\""<<craft_inv.dump()<<"\""<<std::endl;
+       if (list_craftresult->getSize() < 1) {
+               infostream << "ICraftAction::apply(): FAIL: craftresult list too short: "
+                               << "craft_inv=\"" << craft_inv.dump() << "\"" << std::endl;
                return;
        }
 
        ItemStack crafted;
+       ItemStack craftresultitem;
        int count_remaining = count;
-       bool found = getCraftingResult(inv_craft, crafted, false, gamedef);
+       std::vector<ItemStack> output_replacements;
+       getCraftingResult(inv_craft, crafted, output_replacements, false, gamedef);
+       PLAYER_TO_SA(player)->item_CraftPredict(crafted, player, list_craft, craft_inv);
+       bool found = !crafted.empty();
 
-       while(found && list_craftresult->itemFits(0, crafted))
-       {
+       while (found && list_craftresult->itemFits(0, crafted)) {
+               InventoryList saved_craft_list = *list_craft;
+
+               std::vector<ItemStack> temp;
                // Decrement input and add crafting output
-               getCraftingResult(inv_craft, crafted, true, gamedef);
+               getCraftingResult(inv_craft, crafted, temp, true, gamedef);
+               PLAYER_TO_SA(player)->item_OnCraft(crafted, player, &saved_craft_list, craft_inv);
                list_craftresult->addItem(0, crafted);
                mgr->setInventoryModified(craft_inv);
 
-               actionstream<<player->getDescription()
-                               <<" crafts "
-                               <<crafted.getItemString()
-                               <<std::endl;
+               // Add the new replacements to the list
+               IItemDefManager *itemdef = gamedef->getItemDefManager();
+               for (auto &itemstack : temp) {
+                       for (auto &output_replacement : output_replacements) {
+                               if (itemstack.name == output_replacement.name) {
+                                       itemstack = output_replacement.addItem(itemstack, itemdef);
+                                       if (itemstack.empty())
+                                               continue;
+                               }
+                       }
+                       output_replacements.push_back(itemstack);
+               }
+
+               actionstream << player->getDescription()
+                               << " crafts "
+                               << crafted.getItemString()
+                               << std::endl;
 
                // Decrement counter
-               if(count_remaining == 1)
+               if (count_remaining == 1)
                        break;
-               else if(count_remaining > 1)
+
+               if (count_remaining > 1)
                        count_remaining--;
 
                // Get next crafting result
-               found = getCraftingResult(inv_craft, crafted, false, gamedef);
+               getCraftingResult(inv_craft, crafted, temp, false, gamedef);
+               PLAYER_TO_SA(player)->item_CraftPredict(crafted, player, list_craft, craft_inv);
+               found = !crafted.empty();
+       }
+
+       // Put the replacements in the inventory or drop them on the floor, if
+       // the inventory is full
+       for (auto &output_replacement : output_replacements) {
+               if (list_main)
+                       output_replacement = list_main->addItem(output_replacement);
+               if (output_replacement.empty())
+                       continue;
+               u16 count = output_replacement.count;
+               do {
+                       PLAYER_TO_SA(player)->item_OnDrop(output_replacement, player,
+                               player->getBasePosition());
+                       if (count <= output_replacement.count) {
+                               errorstream << "Couldn't drop replacement stack " <<
+                                       output_replacement.getItemString() << " because drop loop didn't "
+                                       "decrease count." << std::endl;
+
+                               break;
+                       }
+               } while (!output_replacement.empty());
        }
 
        infostream<<"ICraftAction::apply(): crafted "
@@ -524,39 +962,34 @@ void ICraftAction::clientApply(InventoryManager *mgr, IGameDef *gamedef)
 
 
 // Crafting helper
-bool getCraftingResult(Inventory *inv, ItemStack& result,
+bool getCraftingResult(Inventory *inv, ItemStack &result,
+               std::vector<ItemStack> &output_replacements,
                bool decrementInput, IGameDef *gamedef)
 {
-       DSTACK(__FUNCTION_NAME);
-       
        result.clear();
 
-       // TODO: Allow different sizes of crafting grids
-
        // Get the InventoryList in which we will operate
        InventoryList *clist = inv->getList("craft");
-       if(!clist || clist->getSize() != 9)
+       if (!clist)
                return false;
 
-       // Mangle crafting grid to an another format
+       // Mangle crafting grid to another format
        CraftInput ci;
        ci.method = CRAFT_METHOD_NORMAL;
-       ci.width = 3;
-       for(u16 i=0; i<9; i++)
+       ci.width = clist->getWidth() ? clist->getWidth() : 3;
+       for (u16 i=0; i < clist->getSize(); i++)
                ci.items.push_back(clist->getItem(i));
 
        // Find out what is crafted and add it to result item slot
        CraftOutput co;
        bool found = gamedef->getCraftDefManager()->getCraftResult(
-                       ci, co, decrementInput, gamedef);
-       if(found)
+                       ci, co, output_replacements, decrementInput, gamedef);
+       if (found)
                result.deSerialize(co.item, gamedef->getItemDefManager());
 
-       if(found && decrementInput)
-       {
+       if (found && decrementInput) {
                // CraftInput has been changed, apply changes in clist
-               for(u16 i=0; i<9; i++)
-               {
+               for (u16 i=0; i < clist->getSize(); i++) {
                        clist->changeItem(i, ci.items[i]);
                }
        }