X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=src%2Finventorymanager.cpp;h=ecdb56a972240b09e5245d007c7613b0ded38437;hb=367a2d4b29a4865a8f2d5b9717786a8660f226bc;hp=b42a80673574b15398d14b4670fe606f3c3a90d6;hpb=1efdc36b22532807d21a0beac94524e3eacfe7bc;p=minetest.git

diff --git a/src/inventorymanager.cpp b/src/inventorymanager.cpp
index b42a80673..ecdb56a97 100644
--- a/src/inventorymanager.cpp
+++ b/src/inventorymanager.cpp
@@ -1,31 +1,35 @@
 /*
-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 General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 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.
+GNU Lesser General Public License for more details.
 
-You should have received a copy of the GNU General Public License along
+You should have received a copy of the GNU Lesser 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 "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 "utility.h"
 #include "craftdef.h"
+#include "rollback_interface.h"
+#include "util/strfnd.h"
+#include "util/basic_macros.h"
+
+#define PLAYER_TO_SA(p)   p->getEnv()->getScriptIface()
 
 /*
 	InventoryLocation
@@ -40,51 +44,39 @@ std::string InventoryLocation::dump() const
 
 void InventoryLocation::serialize(std::ostream &os) const
 {
-        switch(type){
-        case InventoryLocation::UNDEFINED:
-        {
+	switch (type) {
+	case InventoryLocation::UNDEFINED:
 		os<<"undefined";
-	}
-        break;
-        case InventoryLocation::CURRENT_PLAYER:
-        {
+		break;
+	case InventoryLocation::CURRENT_PLAYER:
 		os<<"current_player";
-        }
-        break;
-        case InventoryLocation::PLAYER:
-        {
+		break;
+	case InventoryLocation::PLAYER:
 		os<<"player:"<<name;
-        }
-        break;
-        case InventoryLocation::NODEMETA:
-        {
+		break;
+	case InventoryLocation::NODEMETA:
 		os<<"nodemeta:"<<p.X<<","<<p.Y<<","<<p.Z;
-        }
-        break;
-        default:
-                assert(0);
-        }
+		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');
@@ -92,15 +84,16 @@ void InventoryLocation::deSerialize(std::istream &is)
 		p.X = stoi(fn.next(","));
 		p.Y = stoi(fn.next(","));
 		p.Z = stoi(fn.next(","));
-	}
-	else
-	{
+	} else if (tname == "detached") {
+		type = InventoryLocation::DETACHED;
+		std::getline(is, name, '\n');
+	} 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);
@@ -110,30 +103,32 @@ 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);
 	}
 
 	return a;
 }
 
-IMoveAction::IMoveAction(std::istream &is)
+/*
+	IMoveAction
+*/
+
+IMoveAction::IMoveAction(std::istream &is, bool somewhere) :
+		move_somewhere(somewhere)
 {
 	std::string ts;
 
@@ -153,25 +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;
 	}
 
@@ -181,87 +265,380 @@ 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;
+	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;
+
+	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 (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;
+	}
+
+	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;
 	}
+
+	/*
+		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);
+
 	/*
-		If the source and the destination slots are the same
+		Collect information of endpoints
 	*/
-	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;
+
+	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;
 	}
-	
-	// 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);
+
+	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;
+	}
+
+	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
+				<<" to inv=\""<<to_inv.dump()<<"\""
+				<<" list=\""<<to_list<<"\""
+				<<" i="<<to_i
+				<<std::endl;
+
+		return;
 	}
 
+	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)
+{
+	// Optional InventoryAction operation that is run on the client
+	// to make lag less apparent.
+
+	Inventory *inv_from = mgr->getInventory(from_inv);
+	Inventory *inv_to = mgr->getInventory(to_inv);
+	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)
+		return;
+
+	InventoryList *list_from = inv_from->getList(from_list);
+	InventoryList *list_to = inv_to->getList(to_list);
+	if (!list_from || !list_to)
+		return;
+
+	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);
-	
-	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::IDropAction(std::istream &is)
 {
 	std::string ts;
@@ -281,8 +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;
@@ -293,13 +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<<"\""
@@ -307,28 +683,74 @@ void IDropAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGame
 		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);
+	/*
+		Do not handle rollback if inventory is player's
+	*/
+	bool ignore_src_rollback = (from_inv.type == InventoryLocation::PLAYER);
+
+	/*
+		Collect information of endpoints
+	*/
 
-	// 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
+	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;
+	}
 
-		list_from->addItem(from_i, item2);
+	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);
+
+	// 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;
+
+		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;
+		}
 
-		// 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 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 "
@@ -336,8 +758,82 @@ 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)
+{
+	// Optional InventoryAction operation that is run on the client
+	// to make lag less apparent.
+
+	Inventory *inv_from = mgr->getInventory(from_inv);
+	if (!inv_from)
+		return;
+
+	InventoryLocation current_player;
+	current_player.setCurrentPlayer();
+	Inventory *inv_player = mgr->getInventory(current_player);
+	if (inv_from != inv_player)
+		return;
+
+	InventoryList *list_from = inv_from->getList(from_list);
+	if (!list_from)
+		return;
+
+	if (count == 0)
+		list_from->changeItem(from_i, ItemStack());
+	else
+		list_from->takeItem(from_i, count);
+
+	mgr->setInventoryModified(from_inv);
+}
+
+/*
+	ICraftAction
+*/
+
 ICraftAction::ICraftAction(std::istream &is)
 {
 	std::string ts;
@@ -349,62 +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 "
@@ -412,41 +954,42 @@ void ICraftAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGam
 			<<std::endl;
 }
 
+void ICraftAction::clientApply(InventoryManager *mgr, IGameDef *gamedef)
+{
+	// Optional InventoryAction operation that is run on the client
+	// to make lag less apparent.
+}
+
 
 // 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
 	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]);
 		}
 	}