From cc26f1646308a71ea78f0656efa670915e5e7345 Mon Sep 17 00:00:00 2001
From: "madmaxoft@gmail.com"
 <madmaxoft@gmail.com@0a769ca7-a7f5-676a-18bf-c427514a06d6>
Date: Wed, 10 Apr 2013 19:52:03 +0000
Subject: Added cItemGrid to represent an XY grid of items; converted chests to
 use cItemGrid.

http://forum.mc-server.org/showthread.php?tid=831

git-svn-id: http://mc-server.googlecode.com/svn/trunk@1380 0a769ca7-a7f5-676a-18bf-c427514a06d6
---
 VC2008/MCServer.vcproj                     |    8 +
 source/AllToLua.pkg                        |    1 +
 source/Bindings.cpp                        | 1057 ++++++++++++++++++++++++----
 source/Bindings.h                          |    2 +-
 source/ChestEntity.cpp                     |   86 +--
 source/ChestEntity.h                       |   20 +-
 source/Generating/MineShafts.cpp           |    2 +-
 source/Item.cpp                            |   15 +
 source/Item.h                              |    3 +
 source/ItemGrid.cpp                        |  349 +++++++++
 source/ItemGrid.h                          |   94 +++
 source/ManualBindings.cpp                  |   42 ++
 source/UI/SlotArea.cpp                     |    6 +-
 source/WorldStorage/NBTChunkSerializer.cpp |   30 +-
 source/WorldStorage/NBTChunkSerializer.h   |    5 +
 15 files changed, 1463 insertions(+), 257 deletions(-)
 create mode 100644 source/ItemGrid.cpp
 create mode 100644 source/ItemGrid.h

diff --git a/VC2008/MCServer.vcproj b/VC2008/MCServer.vcproj
index d089ecbab..053f8283f 100644
--- a/VC2008/MCServer.vcproj
+++ b/VC2008/MCServer.vcproj
@@ -456,6 +456,14 @@
 				RelativePath="..\source\Item.h"
 				>
 			</File>
+			<File
+				RelativePath="..\source\ItemGrid.cpp"
+				>
+			</File>
+			<File
+				RelativePath="..\source\ItemGrid.h"
+				>
+			</File>
 			<File
 				RelativePath="..\source\LeakFinder.cpp"
 				>
diff --git a/source/AllToLua.pkg b/source/AllToLua.pkg
index 7a7c54412..f85264fa8 100644
--- a/source/AllToLua.pkg
+++ b/source/AllToLua.pkg
@@ -38,6 +38,7 @@ $cfile "Server.h"
 $cfile "World.h"
 $cfile "Inventory.h"
 $cfile "Item.h"
+$cfile "ItemGrid.h"
 $cfile "ChestEntity.h"
 $cfile "WebAdmin.h"
 $cfile "WebPlugin.h"
diff --git a/source/Bindings.cpp b/source/Bindings.cpp
index 56195bab8..d88fb39c5 100644
--- a/source/Bindings.cpp
+++ b/source/Bindings.cpp
@@ -1,6 +1,6 @@
 /*
 ** Lua binding: AllToLua
-** Generated automatically by tolua++-1.0.92 on 04/06/13 23:17:20.
+** Generated automatically by tolua++-1.0.92 on 04/10/13 21:35:56.
 */
 
 #ifndef __cplusplus
@@ -37,6 +37,7 @@ TOLUA_API int  tolua_AllToLua_open (lua_State* tolua_S);
 #include "World.h"
 #include "Inventory.h"
 #include "Item.h"
+#include "ItemGrid.h"
 #include "ChestEntity.h"
 #include "WebAdmin.h"
 #include "WebPlugin.h"
@@ -142,6 +143,7 @@ static void tolua_reg_types (lua_State* tolua_S)
  tolua_usertype(tolua_S,"cCraftingRecipe");
  tolua_usertype(tolua_S,"cPlugin_NewLua");
  tolua_usertype(tolua_S,"cStringMap");
+ tolua_usertype(tolua_S,"cItemGrid");
  tolua_usertype(tolua_S,"cBlockArea");
  tolua_usertype(tolua_S,"cInventory");
  tolua_usertype(tolua_S,"cRoot");
@@ -162,30 +164,30 @@ static void tolua_reg_types (lua_State* tolua_S)
  tolua_usertype(tolua_S,"Vector3i");
  tolua_usertype(tolua_S,"cCraftingRecipes");
  tolua_usertype(tolua_S,"Lua__cPlayer");
- tolua_usertype(tolua_S,"cPawn");
+ tolua_usertype(tolua_S,"cStairs");
  tolua_usertype(tolua_S,"cChestEntity");
  tolua_usertype(tolua_S,"cWebAdmin");
  tolua_usertype(tolua_S,"cGroupManager");
  tolua_usertype(tolua_S,"cBlockEntity");
  tolua_usertype(tolua_S,"Lua__cPickup");
- tolua_usertype(tolua_S,"Lua__cEntity");
- tolua_usertype(tolua_S,"cPluginManager");
  tolua_usertype(tolua_S,"cWebPlugin");
+ tolua_usertype(tolua_S,"cPluginManager");
  tolua_usertype(tolua_S,"HTTPRequest");
- tolua_usertype(tolua_S,"cLadder");
  tolua_usertype(tolua_S,"HTTPFormData");
+ tolua_usertype(tolua_S,"cLadder");
+ tolua_usertype(tolua_S,"cWorld");
  tolua_usertype(tolua_S,"cEntity");
  tolua_usertype(tolua_S,"cIniFile");
- tolua_usertype(tolua_S,"cServer");
+ tolua_usertype(tolua_S,"cPlugin");
  tolua_usertype(tolua_S,"AStringVector");
  tolua_usertype(tolua_S,"cVine");
  tolua_usertype(tolua_S,"cPlayer");
  tolua_usertype(tolua_S,"cTorch");
  tolua_usertype(tolua_S,"cBlockEntityWindowOwner");
- tolua_usertype(tolua_S,"cPlugin");
+ tolua_usertype(tolua_S,"cServer");
  tolua_usertype(tolua_S,"Lua__cChestEntity");
- tolua_usertype(tolua_S,"cWorld");
- tolua_usertype(tolua_S,"cStairs");
+ tolua_usertype(tolua_S,"cPawn");
+ tolua_usertype(tolua_S,"Lua__cEntity");
  tolua_usertype(tolua_S,"Vector3d");
 }
 
@@ -13158,6 +13160,40 @@ static int tolua_AllToLua_cItem_HasDuration00(lua_State* tolua_S)
 }
 #endif //#ifndef TOLUA_DISABLE
 
+/* method: IsStackableWith of class  cItem */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_cItem_IsStackableWith00
+static int tolua_AllToLua_cItem_IsStackableWith00(lua_State* tolua_S)
+{
+#ifndef TOLUA_RELEASE
+ tolua_Error tolua_err;
+ if (
+     !tolua_isusertype(tolua_S,1,"cItem",0,&tolua_err) ||
+     (tolua_isvaluenil(tolua_S,2,&tolua_err) || !tolua_isusertype(tolua_S,2,"const cItem",0,&tolua_err)) ||
+     !tolua_isnoobj(tolua_S,3,&tolua_err)
+ )
+  goto tolua_lerror;
+ else
+#endif
+ {
+  cItem* self = (cItem*)  tolua_tousertype(tolua_S,1,0);
+  const cItem* a_OtherStack = ((const cItem*)  tolua_tousertype(tolua_S,2,0));
+#ifndef TOLUA_RELEASE
+  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'IsStackableWith'", NULL);
+#endif
+  {
+   bool tolua_ret = (bool)  self->IsStackableWith(*a_OtherStack);
+   tolua_pushboolean(tolua_S,(bool)tolua_ret);
+  }
+ }
+ return 1;
+#ifndef TOLUA_RELEASE
+ tolua_lerror:
+ tolua_error(tolua_S,"#ferror in function 'IsStackableWith'.",&tolua_err);
+ return 0;
+#endif
+}
+#endif //#ifndef TOLUA_DISABLE
+
 /* method: IsEnchantable of class  cItem */
 #ifndef TOLUA_DISABLE_tolua_AllToLua_cItem_IsEnchantable00
 static int tolua_AllToLua_cItem_IsEnchantable00(lua_State* tolua_S)
@@ -13542,323 +13578,1013 @@ tolua_lerror:
 }
 #endif //#ifndef TOLUA_DISABLE
 
-/* method: new of class  cChestEntity */
-#ifndef TOLUA_DISABLE_tolua_AllToLua_cChestEntity_new00
-static int tolua_AllToLua_cChestEntity_new00(lua_State* tolua_S)
+/* method: GetWidth of class  cItemGrid */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_cItemGrid_GetWidth00
+static int tolua_AllToLua_cItemGrid_GetWidth00(lua_State* tolua_S)
 {
 #ifndef TOLUA_RELEASE
  tolua_Error tolua_err;
  if (
-     !tolua_isusertable(tolua_S,1,"cChestEntity",0,&tolua_err) ||
-     !tolua_isnumber(tolua_S,2,0,&tolua_err) ||
-     !tolua_isnumber(tolua_S,3,0,&tolua_err) ||
-     !tolua_isnumber(tolua_S,4,0,&tolua_err) ||
-     !tolua_isnoobj(tolua_S,5,&tolua_err)
+     !tolua_isusertype(tolua_S,1,"const cItemGrid",0,&tolua_err) ||
+     !tolua_isnoobj(tolua_S,2,&tolua_err)
  )
   goto tolua_lerror;
  else
 #endif
  {
-  int a_BlockX = ((int)  tolua_tonumber(tolua_S,2,0));
-  int a_BlockY = ((int)  tolua_tonumber(tolua_S,3,0));
-  int a_BlockZ = ((int)  tolua_tonumber(tolua_S,4,0));
+  const cItemGrid* self = (const cItemGrid*)  tolua_tousertype(tolua_S,1,0);
+#ifndef TOLUA_RELEASE
+  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'GetWidth'", NULL);
+#endif
   {
-   cChestEntity* tolua_ret = (cChestEntity*)  Mtolua_new((cChestEntity)(a_BlockX,a_BlockY,a_BlockZ));
-    tolua_pushusertype(tolua_S,(void*)tolua_ret,"cChestEntity");
+   int tolua_ret = (int)  self->GetWidth();
+   tolua_pushnumber(tolua_S,(lua_Number)tolua_ret);
   }
  }
  return 1;
 #ifndef TOLUA_RELEASE
  tolua_lerror:
- tolua_error(tolua_S,"#ferror in function 'new'.",&tolua_err);
+ tolua_error(tolua_S,"#ferror in function 'GetWidth'.",&tolua_err);
  return 0;
 #endif
 }
 #endif //#ifndef TOLUA_DISABLE
 
-/* method: new_local of class  cChestEntity */
-#ifndef TOLUA_DISABLE_tolua_AllToLua_cChestEntity_new00_local
-static int tolua_AllToLua_cChestEntity_new00_local(lua_State* tolua_S)
+/* method: GetHeight of class  cItemGrid */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_cItemGrid_GetHeight00
+static int tolua_AllToLua_cItemGrid_GetHeight00(lua_State* tolua_S)
 {
 #ifndef TOLUA_RELEASE
  tolua_Error tolua_err;
  if (
-     !tolua_isusertable(tolua_S,1,"cChestEntity",0,&tolua_err) ||
-     !tolua_isnumber(tolua_S,2,0,&tolua_err) ||
-     !tolua_isnumber(tolua_S,3,0,&tolua_err) ||
-     !tolua_isnumber(tolua_S,4,0,&tolua_err) ||
-     !tolua_isnoobj(tolua_S,5,&tolua_err)
+     !tolua_isusertype(tolua_S,1,"const cItemGrid",0,&tolua_err) ||
+     !tolua_isnoobj(tolua_S,2,&tolua_err)
  )
   goto tolua_lerror;
  else
 #endif
  {
-  int a_BlockX = ((int)  tolua_tonumber(tolua_S,2,0));
-  int a_BlockY = ((int)  tolua_tonumber(tolua_S,3,0));
-  int a_BlockZ = ((int)  tolua_tonumber(tolua_S,4,0));
+  const cItemGrid* self = (const cItemGrid*)  tolua_tousertype(tolua_S,1,0);
+#ifndef TOLUA_RELEASE
+  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'GetHeight'", NULL);
+#endif
   {
-   cChestEntity* tolua_ret = (cChestEntity*)  Mtolua_new((cChestEntity)(a_BlockX,a_BlockY,a_BlockZ));
-    tolua_pushusertype(tolua_S,(void*)tolua_ret,"cChestEntity");
-    tolua_register_gc(tolua_S,lua_gettop(tolua_S));
+   int tolua_ret = (int)  self->GetHeight();
+   tolua_pushnumber(tolua_S,(lua_Number)tolua_ret);
   }
  }
  return 1;
 #ifndef TOLUA_RELEASE
  tolua_lerror:
- tolua_error(tolua_S,"#ferror in function 'new'.",&tolua_err);
+ tolua_error(tolua_S,"#ferror in function 'GetHeight'.",&tolua_err);
  return 0;
 #endif
 }
 #endif //#ifndef TOLUA_DISABLE
 
-/* method: GetSlot of class  cChestEntity */
-#ifndef TOLUA_DISABLE_tolua_AllToLua_cChestEntity_GetSlot00
-static int tolua_AllToLua_cChestEntity_GetSlot00(lua_State* tolua_S)
+/* method: GetNumSlots of class  cItemGrid */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_cItemGrid_GetNumSlots00
+static int tolua_AllToLua_cItemGrid_GetNumSlots00(lua_State* tolua_S)
 {
 #ifndef TOLUA_RELEASE
  tolua_Error tolua_err;
  if (
-     !tolua_isusertype(tolua_S,1,"const cChestEntity",0,&tolua_err) ||
-     !tolua_isnumber(tolua_S,2,0,&tolua_err) ||
-     !tolua_isnoobj(tolua_S,3,&tolua_err)
+     !tolua_isusertype(tolua_S,1,"const cItemGrid",0,&tolua_err) ||
+     !tolua_isnoobj(tolua_S,2,&tolua_err)
  )
   goto tolua_lerror;
  else
 #endif
  {
-  const cChestEntity* self = (const cChestEntity*)  tolua_tousertype(tolua_S,1,0);
-  int a_Slot = ((int)  tolua_tonumber(tolua_S,2,0));
+  const cItemGrid* self = (const cItemGrid*)  tolua_tousertype(tolua_S,1,0);
 #ifndef TOLUA_RELEASE
-  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'GetSlot'", NULL);
+  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'GetNumSlots'", NULL);
 #endif
   {
-   const cItem* tolua_ret = (const cItem*)  self->GetSlot(a_Slot);
-    tolua_pushusertype(tolua_S,(void*)tolua_ret,"const cItem");
+   int tolua_ret = (int)  self->GetNumSlots();
+   tolua_pushnumber(tolua_S,(lua_Number)tolua_ret);
   }
  }
  return 1;
 #ifndef TOLUA_RELEASE
  tolua_lerror:
- tolua_error(tolua_S,"#ferror in function 'GetSlot'.",&tolua_err);
+ tolua_error(tolua_S,"#ferror in function 'GetNumSlots'.",&tolua_err);
  return 0;
 #endif
 }
 #endif //#ifndef TOLUA_DISABLE
 
-/* method: SetSlot of class  cChestEntity */
-#ifndef TOLUA_DISABLE_tolua_AllToLua_cChestEntity_SetSlot00
-static int tolua_AllToLua_cChestEntity_SetSlot00(lua_State* tolua_S)
+/* method: GetSlotNum of class  cItemGrid */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_cItemGrid_GetSlotNum00
+static int tolua_AllToLua_cItemGrid_GetSlotNum00(lua_State* tolua_S)
 {
 #ifndef TOLUA_RELEASE
  tolua_Error tolua_err;
  if (
-     !tolua_isusertype(tolua_S,1,"cChestEntity",0,&tolua_err) ||
+     !tolua_isusertype(tolua_S,1,"const cItemGrid",0,&tolua_err) ||
      !tolua_isnumber(tolua_S,2,0,&tolua_err) ||
-     (tolua_isvaluenil(tolua_S,3,&tolua_err) || !tolua_isusertype(tolua_S,3,"const cItem",0,&tolua_err)) ||
+     !tolua_isnumber(tolua_S,3,0,&tolua_err) ||
      !tolua_isnoobj(tolua_S,4,&tolua_err)
  )
   goto tolua_lerror;
  else
 #endif
  {
-  cChestEntity* self = (cChestEntity*)  tolua_tousertype(tolua_S,1,0);
-  int a_Slot = ((int)  tolua_tonumber(tolua_S,2,0));
-  const cItem* a_Item = ((const cItem*)  tolua_tousertype(tolua_S,3,0));
+  const cItemGrid* self = (const cItemGrid*)  tolua_tousertype(tolua_S,1,0);
+  int a_X = ((int)  tolua_tonumber(tolua_S,2,0));
+  int a_Y = ((int)  tolua_tonumber(tolua_S,3,0));
 #ifndef TOLUA_RELEASE
-  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'SetSlot'", NULL);
+  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'GetSlotNum'", NULL);
 #endif
   {
-   self->SetSlot(a_Slot,*a_Item);
+   int tolua_ret = (int)  self->GetSlotNum(a_X,a_Y);
+   tolua_pushnumber(tolua_S,(lua_Number)tolua_ret);
   }
  }
- return 0;
+ return 1;
 #ifndef TOLUA_RELEASE
  tolua_lerror:
- tolua_error(tolua_S,"#ferror in function 'SetSlot'.",&tolua_err);
+ tolua_error(tolua_S,"#ferror in function 'GetSlotNum'.",&tolua_err);
  return 0;
 #endif
 }
 #endif //#ifndef TOLUA_DISABLE
 
-/* method: UsedBy of class  cChestEntity */
-#ifndef TOLUA_DISABLE_tolua_AllToLua_cChestEntity_UsedBy00
-static int tolua_AllToLua_cChestEntity_UsedBy00(lua_State* tolua_S)
+/* method: GetItem of class  cItemGrid */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_cItemGrid_GetItem00
+static int tolua_AllToLua_cItemGrid_GetItem00(lua_State* tolua_S)
 {
 #ifndef TOLUA_RELEASE
  tolua_Error tolua_err;
  if (
-     !tolua_isusertype(tolua_S,1,"cChestEntity",0,&tolua_err) ||
-     !tolua_isusertype(tolua_S,2,"cPlayer",0,&tolua_err) ||
-     !tolua_isnoobj(tolua_S,3,&tolua_err)
+     !tolua_isusertype(tolua_S,1,"const cItemGrid",0,&tolua_err) ||
+     !tolua_isnumber(tolua_S,2,0,&tolua_err) ||
+     !tolua_isnumber(tolua_S,3,0,&tolua_err) ||
+     !tolua_isnoobj(tolua_S,4,&tolua_err)
  )
   goto tolua_lerror;
  else
 #endif
  {
-  cChestEntity* self = (cChestEntity*)  tolua_tousertype(tolua_S,1,0);
-  cPlayer* a_Player = ((cPlayer*)  tolua_tousertype(tolua_S,2,0));
+  const cItemGrid* self = (const cItemGrid*)  tolua_tousertype(tolua_S,1,0);
+  int a_X = ((int)  tolua_tonumber(tolua_S,2,0));
+  int a_Y = ((int)  tolua_tonumber(tolua_S,3,0));
 #ifndef TOLUA_RELEASE
-  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'UsedBy'", NULL);
+  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'GetItem'", NULL);
 #endif
   {
-   self->UsedBy(a_Player);
+   const cItem& tolua_ret = (const cItem&)  self->GetItem(a_X,a_Y);
+    tolua_pushusertype(tolua_S,(void*)&tolua_ret,"const cItem");
   }
  }
- return 0;
+ return 1;
 #ifndef TOLUA_RELEASE
  tolua_lerror:
- tolua_error(tolua_S,"#ferror in function 'UsedBy'.",&tolua_err);
+ tolua_error(tolua_S,"#ferror in function 'GetItem'.",&tolua_err);
  return 0;
 #endif
 }
 #endif //#ifndef TOLUA_DISABLE
 
-/* get function: __cBlockEntityWindowOwner__ of class  cChestEntity */
-#ifndef TOLUA_DISABLE_tolua_get_cChestEntity___cBlockEntityWindowOwner__
-static int tolua_get_cChestEntity___cBlockEntityWindowOwner__(lua_State* tolua_S)
+/* method: GetItem of class  cItemGrid */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_cItemGrid_GetItem01
+static int tolua_AllToLua_cItemGrid_GetItem01(lua_State* tolua_S)
 {
-  cChestEntity* self = (cChestEntity*)  tolua_tousertype(tolua_S,1,0);
+ tolua_Error tolua_err;
+ if (
+     !tolua_isusertype(tolua_S,1,"cItemGrid",0,&tolua_err) ||
+     !tolua_isnumber(tolua_S,2,0,&tolua_err) ||
+     !tolua_isnumber(tolua_S,3,0,&tolua_err) ||
+     !tolua_isnoobj(tolua_S,4,&tolua_err)
+ )
+  goto tolua_lerror;
+ else
+ {
+  cItemGrid* self = (cItemGrid*)  tolua_tousertype(tolua_S,1,0);
+  int a_X = ((int)  tolua_tonumber(tolua_S,2,0));
+  int a_Y = ((int)  tolua_tonumber(tolua_S,3,0));
 #ifndef TOLUA_RELEASE
-  if (!self) tolua_error(tolua_S,"invalid 'self' in accessing variable '__cBlockEntityWindowOwner__'",NULL);
-#endif
-#ifdef __cplusplus
-   tolua_pushusertype(tolua_S,(void*)static_cast<cBlockEntityWindowOwner*>(self), "cBlockEntityWindowOwner");
-#else
-   tolua_pushusertype(tolua_S,(void*)((cBlockEntityWindowOwner*)self), "cBlockEntityWindowOwner");
+  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'GetItem'", NULL);
 #endif
+  {
+   cItem& tolua_ret = (cItem&)  self->GetItem(a_X,a_Y);
+    tolua_pushusertype(tolua_S,(void*)&tolua_ret,"cItem");
+  }
+ }
  return 1;
+tolua_lerror:
+ return tolua_AllToLua_cItemGrid_GetItem00(tolua_S);
 }
 #endif //#ifndef TOLUA_DISABLE
 
- class Lua__cChestEntity : public cChestEntity, public ToluaBase {
-public:
-	 void  UsedBy( cPlayer* a_Player) {
-		if (push_method("UsedBy",  tolua_AllToLua_cChestEntity_UsedBy00)) {
-			tolua_pushusertype(lua_state, (void*)a_Player, "cPlayer");
-			ToluaBase::dbcall(lua_state, 2, 0);
-		} else {
-			return ( void ) cChestEntity:: UsedBy(a_Player);
-		};
-	};
-
-	 void cChestEntity__UsedBy( cPlayer* a_Player) {
-		return ( void )cChestEntity::UsedBy(a_Player);
-	};
-	 Lua__cChestEntity( int a_BlockX, int a_BlockY, int a_BlockZ): cChestEntity(a_BlockX,a_BlockY,a_BlockZ){};
-};
-
-/* method: tolua__set_instance of class  Lua__cChestEntity */
-#ifndef TOLUA_DISABLE_tolua_AllToLua_Lua__cChestEntity_tolua__set_instance00
-static int tolua_AllToLua_Lua__cChestEntity_tolua__set_instance00(lua_State* tolua_S)
+/* method: GetItem of class  cItemGrid */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_cItemGrid_GetItem02
+static int tolua_AllToLua_cItemGrid_GetItem02(lua_State* tolua_S)
 {
-#ifndef TOLUA_RELEASE
  tolua_Error tolua_err;
  if (
-     !tolua_isusertype(tolua_S,1,"Lua__cChestEntity",0,&tolua_err) ||
+     !tolua_isusertype(tolua_S,1,"const cItemGrid",0,&tolua_err) ||
+     !tolua_isnumber(tolua_S,2,0,&tolua_err) ||
      !tolua_isnoobj(tolua_S,3,&tolua_err)
  )
   goto tolua_lerror;
  else
-#endif
  {
-  Lua__cChestEntity* self = (Lua__cChestEntity*)  tolua_tousertype(tolua_S,1,0);
-  lua_State* L =  tolua_S;
-  lua_Object lo = ((lua_Object)  tolua_tovalue(tolua_S,2,0));
+  const cItemGrid* self = (const cItemGrid*)  tolua_tousertype(tolua_S,1,0);
+  int a_SlotNum = ((int)  tolua_tonumber(tolua_S,2,0));
 #ifndef TOLUA_RELEASE
-  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'tolua__set_instance'", NULL);
+  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'GetItem'", NULL);
 #endif
   {
-   self->tolua__set_instance(L,lo);
+   const cItem& tolua_ret = (const cItem&)  self->GetItem(a_SlotNum);
+    tolua_pushusertype(tolua_S,(void*)&tolua_ret,"const cItem");
   }
  }
- return 0;
-#ifndef TOLUA_RELEASE
- tolua_lerror:
- tolua_error(tolua_S,"#ferror in function 'tolua__set_instance'.",&tolua_err);
- return 0;
-#endif
+ return 1;
+tolua_lerror:
+ return tolua_AllToLua_cItemGrid_GetItem01(tolua_S);
 }
 #endif //#ifndef TOLUA_DISABLE
 
-/* method: cChestEntity__UsedBy of class  Lua__cChestEntity */
-#ifndef TOLUA_DISABLE_tolua_AllToLua_Lua__cChestEntity_cChestEntity__UsedBy00
-static int tolua_AllToLua_Lua__cChestEntity_cChestEntity__UsedBy00(lua_State* tolua_S)
+/* method: GetItem of class  cItemGrid */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_cItemGrid_GetItem03
+static int tolua_AllToLua_cItemGrid_GetItem03(lua_State* tolua_S)
 {
-#ifndef TOLUA_RELEASE
  tolua_Error tolua_err;
  if (
-     !tolua_isusertype(tolua_S,1,"Lua__cChestEntity",0,&tolua_err) ||
-     !tolua_isusertype(tolua_S,2,"cPlayer",0,&tolua_err) ||
+     !tolua_isusertype(tolua_S,1,"cItemGrid",0,&tolua_err) ||
+     !tolua_isnumber(tolua_S,2,0,&tolua_err) ||
      !tolua_isnoobj(tolua_S,3,&tolua_err)
  )
   goto tolua_lerror;
  else
-#endif
  {
-  Lua__cChestEntity* self = (Lua__cChestEntity*)  tolua_tousertype(tolua_S,1,0);
-  cPlayer* a_Player = ((cPlayer*)  tolua_tousertype(tolua_S,2,0));
+  cItemGrid* self = (cItemGrid*)  tolua_tousertype(tolua_S,1,0);
+  int a_SlotNum = ((int)  tolua_tonumber(tolua_S,2,0));
 #ifndef TOLUA_RELEASE
-  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'cChestEntity__UsedBy'", NULL);
+  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'GetItem'", NULL);
 #endif
   {
-   self->cChestEntity__UsedBy(a_Player);
+   cItem& tolua_ret = (cItem&)  self->GetItem(a_SlotNum);
+    tolua_pushusertype(tolua_S,(void*)&tolua_ret,"cItem");
   }
  }
- return 0;
-#ifndef TOLUA_RELEASE
- tolua_lerror:
- tolua_error(tolua_S,"#ferror in function 'cChestEntity__UsedBy'.",&tolua_err);
- return 0;
-#endif
+ return 1;
+tolua_lerror:
+ return tolua_AllToLua_cItemGrid_GetItem02(tolua_S);
 }
 #endif //#ifndef TOLUA_DISABLE
 
-/* method: new of class  Lua__cChestEntity */
-#ifndef TOLUA_DISABLE_tolua_AllToLua_Lua__cChestEntity_new00
-static int tolua_AllToLua_Lua__cChestEntity_new00(lua_State* tolua_S)
+/* method: SetItem of class  cItemGrid */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_cItemGrid_SetItem00
+static int tolua_AllToLua_cItemGrid_SetItem00(lua_State* tolua_S)
 {
 #ifndef TOLUA_RELEASE
  tolua_Error tolua_err;
  if (
-     !tolua_isusertable(tolua_S,1,"Lua__cChestEntity",0,&tolua_err) ||
+     !tolua_isusertype(tolua_S,1,"cItemGrid",0,&tolua_err) ||
      !tolua_isnumber(tolua_S,2,0,&tolua_err) ||
      !tolua_isnumber(tolua_S,3,0,&tolua_err) ||
-     !tolua_isnumber(tolua_S,4,0,&tolua_err) ||
+     (tolua_isvaluenil(tolua_S,4,&tolua_err) || !tolua_isusertype(tolua_S,4,"const cItem",0,&tolua_err)) ||
      !tolua_isnoobj(tolua_S,5,&tolua_err)
  )
   goto tolua_lerror;
  else
 #endif
  {
-  int a_BlockX = ((int)  tolua_tonumber(tolua_S,2,0));
-  int a_BlockY = ((int)  tolua_tonumber(tolua_S,3,0));
-  int a_BlockZ = ((int)  tolua_tonumber(tolua_S,4,0));
+  cItemGrid* self = (cItemGrid*)  tolua_tousertype(tolua_S,1,0);
+  int a_X = ((int)  tolua_tonumber(tolua_S,2,0));
+  int a_Y = ((int)  tolua_tonumber(tolua_S,3,0));
+  const cItem* a_Item = ((const cItem*)  tolua_tousertype(tolua_S,4,0));
+#ifndef TOLUA_RELEASE
+  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'SetItem'", NULL);
+#endif
   {
-   Lua__cChestEntity* tolua_ret = (Lua__cChestEntity*)  Mtolua_new((Lua__cChestEntity)(a_BlockX,a_BlockY,a_BlockZ));
-    tolua_pushusertype(tolua_S,(void*)tolua_ret,"Lua__cChestEntity");
+   self->SetItem(a_X,a_Y,*a_Item);
   }
  }
- return 1;
+ return 0;
 #ifndef TOLUA_RELEASE
  tolua_lerror:
- tolua_error(tolua_S,"#ferror in function 'new'.",&tolua_err);
+ tolua_error(tolua_S,"#ferror in function 'SetItem'.",&tolua_err);
  return 0;
 #endif
 }
 #endif //#ifndef TOLUA_DISABLE
 
-/* method: new_local of class  Lua__cChestEntity */
-#ifndef TOLUA_DISABLE_tolua_AllToLua_Lua__cChestEntity_new00_local
-static int tolua_AllToLua_Lua__cChestEntity_new00_local(lua_State* tolua_S)
+/* method: SetItem of class  cItemGrid */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_cItemGrid_SetItem01
+static int tolua_AllToLua_cItemGrid_SetItem01(lua_State* tolua_S)
 {
-#ifndef TOLUA_RELEASE
  tolua_Error tolua_err;
  if (
-     !tolua_isusertable(tolua_S,1,"Lua__cChestEntity",0,&tolua_err) ||
+     !tolua_isusertype(tolua_S,1,"cItemGrid",0,&tolua_err) ||
      !tolua_isnumber(tolua_S,2,0,&tolua_err) ||
      !tolua_isnumber(tolua_S,3,0,&tolua_err) ||
      !tolua_isnumber(tolua_S,4,0,&tolua_err) ||
-     !tolua_isnoobj(tolua_S,5,&tolua_err)
+     !tolua_isnumber(tolua_S,5,0,&tolua_err) ||
+     !tolua_isnumber(tolua_S,6,0,&tolua_err) ||
+     !tolua_isnoobj(tolua_S,7,&tolua_err)
+ )
+  goto tolua_lerror;
+ else
+ {
+  cItemGrid* self = (cItemGrid*)  tolua_tousertype(tolua_S,1,0);
+  int a_X = ((int)  tolua_tonumber(tolua_S,2,0));
+  int a_Y = ((int)  tolua_tonumber(tolua_S,3,0));
+  short a_ItemType = ((short)  tolua_tonumber(tolua_S,4,0));
+  char a_ItemCount = ((char)  tolua_tonumber(tolua_S,5,0));
+  short a_ItemDamage = ((short)  tolua_tonumber(tolua_S,6,0));
+#ifndef TOLUA_RELEASE
+  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'SetItem'", NULL);
+#endif
+  {
+   self->SetItem(a_X,a_Y,a_ItemType,a_ItemCount,a_ItemDamage);
+  }
+ }
+ return 0;
+tolua_lerror:
+ return tolua_AllToLua_cItemGrid_SetItem00(tolua_S);
+}
+#endif //#ifndef TOLUA_DISABLE
+
+/* method: SetItem of class  cItemGrid */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_cItemGrid_SetItem02
+static int tolua_AllToLua_cItemGrid_SetItem02(lua_State* tolua_S)
+{
+ tolua_Error tolua_err;
+ if (
+     !tolua_isusertype(tolua_S,1,"cItemGrid",0,&tolua_err) ||
+     !tolua_isnumber(tolua_S,2,0,&tolua_err) ||
+     (tolua_isvaluenil(tolua_S,3,&tolua_err) || !tolua_isusertype(tolua_S,3,"const cItem",0,&tolua_err)) ||
+     !tolua_isnoobj(tolua_S,4,&tolua_err)
+ )
+  goto tolua_lerror;
+ else
+ {
+  cItemGrid* self = (cItemGrid*)  tolua_tousertype(tolua_S,1,0);
+  int a_SlotNum = ((int)  tolua_tonumber(tolua_S,2,0));
+  const cItem* a_Item = ((const cItem*)  tolua_tousertype(tolua_S,3,0));
+#ifndef TOLUA_RELEASE
+  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'SetItem'", NULL);
+#endif
+  {
+   self->SetItem(a_SlotNum,*a_Item);
+  }
+ }
+ return 0;
+tolua_lerror:
+ return tolua_AllToLua_cItemGrid_SetItem01(tolua_S);
+}
+#endif //#ifndef TOLUA_DISABLE
+
+/* method: SetItem of class  cItemGrid */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_cItemGrid_SetItem03
+static int tolua_AllToLua_cItemGrid_SetItem03(lua_State* tolua_S)
+{
+ tolua_Error tolua_err;
+ if (
+     !tolua_isusertype(tolua_S,1,"cItemGrid",0,&tolua_err) ||
+     !tolua_isnumber(tolua_S,2,0,&tolua_err) ||
+     !tolua_isnumber(tolua_S,3,0,&tolua_err) ||
+     !tolua_isnumber(tolua_S,4,0,&tolua_err) ||
+     !tolua_isnumber(tolua_S,5,0,&tolua_err) ||
+     !tolua_isnoobj(tolua_S,6,&tolua_err)
+ )
+  goto tolua_lerror;
+ else
+ {
+  cItemGrid* self = (cItemGrid*)  tolua_tousertype(tolua_S,1,0);
+  int a_SlotNum = ((int)  tolua_tonumber(tolua_S,2,0));
+  short a_ItemType = ((short)  tolua_tonumber(tolua_S,3,0));
+  char a_ItemCount = ((char)  tolua_tonumber(tolua_S,4,0));
+  short a_ItemDamage = ((short)  tolua_tonumber(tolua_S,5,0));
+#ifndef TOLUA_RELEASE
+  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'SetItem'", NULL);
+#endif
+  {
+   self->SetItem(a_SlotNum,a_ItemType,a_ItemCount,a_ItemDamage);
+  }
+ }
+ return 0;
+tolua_lerror:
+ return tolua_AllToLua_cItemGrid_SetItem02(tolua_S);
+}
+#endif //#ifndef TOLUA_DISABLE
+
+/* method: Clear of class  cItemGrid */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_cItemGrid_Clear00
+static int tolua_AllToLua_cItemGrid_Clear00(lua_State* tolua_S)
+{
+#ifndef TOLUA_RELEASE
+ tolua_Error tolua_err;
+ if (
+     !tolua_isusertype(tolua_S,1,"cItemGrid",0,&tolua_err) ||
+     !tolua_isnoobj(tolua_S,2,&tolua_err)
+ )
+  goto tolua_lerror;
+ else
+#endif
+ {
+  cItemGrid* self = (cItemGrid*)  tolua_tousertype(tolua_S,1,0);
+#ifndef TOLUA_RELEASE
+  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'Clear'", NULL);
+#endif
+  {
+   self->Clear();
+  }
+ }
+ return 0;
+#ifndef TOLUA_RELEASE
+ tolua_lerror:
+ tolua_error(tolua_S,"#ferror in function 'Clear'.",&tolua_err);
+ return 0;
+#endif
+}
+#endif //#ifndef TOLUA_DISABLE
+
+/* method: HowManyCanFit of class  cItemGrid */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_cItemGrid_HowManyCanFit00
+static int tolua_AllToLua_cItemGrid_HowManyCanFit00(lua_State* tolua_S)
+{
+#ifndef TOLUA_RELEASE
+ tolua_Error tolua_err;
+ if (
+     !tolua_isusertype(tolua_S,1,"cItemGrid",0,&tolua_err) ||
+     (tolua_isvaluenil(tolua_S,2,&tolua_err) || !tolua_isusertype(tolua_S,2,"const cItem",0,&tolua_err)) ||
+     !tolua_isnoobj(tolua_S,3,&tolua_err)
+ )
+  goto tolua_lerror;
+ else
+#endif
+ {
+  cItemGrid* self = (cItemGrid*)  tolua_tousertype(tolua_S,1,0);
+  const cItem* a_ItemStack = ((const cItem*)  tolua_tousertype(tolua_S,2,0));
+#ifndef TOLUA_RELEASE
+  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'HowManyCanFit'", NULL);
+#endif
+  {
+   int tolua_ret = (int)  self->HowManyCanFit(*a_ItemStack);
+   tolua_pushnumber(tolua_S,(lua_Number)tolua_ret);
+  }
+ }
+ return 1;
+#ifndef TOLUA_RELEASE
+ tolua_lerror:
+ tolua_error(tolua_S,"#ferror in function 'HowManyCanFit'.",&tolua_err);
+ return 0;
+#endif
+}
+#endif //#ifndef TOLUA_DISABLE
+
+/* method: AddItem of class  cItemGrid */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_cItemGrid_AddItem00
+static int tolua_AllToLua_cItemGrid_AddItem00(lua_State* tolua_S)
+{
+#ifndef TOLUA_RELEASE
+ tolua_Error tolua_err;
+ if (
+     !tolua_isusertype(tolua_S,1,"cItemGrid",0,&tolua_err) ||
+     (tolua_isvaluenil(tolua_S,2,&tolua_err) || !tolua_isusertype(tolua_S,2,"cItem",0,&tolua_err)) ||
+     !tolua_isnoobj(tolua_S,3,&tolua_err)
+ )
+  goto tolua_lerror;
+ else
+#endif
+ {
+  cItemGrid* self = (cItemGrid*)  tolua_tousertype(tolua_S,1,0);
+  cItem* a_ItemStack = ((cItem*)  tolua_tousertype(tolua_S,2,0));
+#ifndef TOLUA_RELEASE
+  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'AddItem'", NULL);
+#endif
+  {
+   bool tolua_ret = (bool)  self->AddItem(*a_ItemStack);
+   tolua_pushboolean(tolua_S,(bool)tolua_ret);
+  }
+ }
+ return 1;
+#ifndef TOLUA_RELEASE
+ tolua_lerror:
+ tolua_error(tolua_S,"#ferror in function 'AddItem'.",&tolua_err);
+ return 0;
+#endif
+}
+#endif //#ifndef TOLUA_DISABLE
+
+/* method: AddItems of class  cItemGrid */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_cItemGrid_AddItems00
+static int tolua_AllToLua_cItemGrid_AddItems00(lua_State* tolua_S)
+{
+#ifndef TOLUA_RELEASE
+ tolua_Error tolua_err;
+ if (
+     !tolua_isusertype(tolua_S,1,"cItemGrid",0,&tolua_err) ||
+     (tolua_isvaluenil(tolua_S,2,&tolua_err) || !tolua_isusertype(tolua_S,2,"cItems",0,&tolua_err)) ||
+     !tolua_isnoobj(tolua_S,3,&tolua_err)
+ )
+  goto tolua_lerror;
+ else
+#endif
+ {
+  cItemGrid* self = (cItemGrid*)  tolua_tousertype(tolua_S,1,0);
+  cItems* a_ItemStackList = ((cItems*)  tolua_tousertype(tolua_S,2,0));
+#ifndef TOLUA_RELEASE
+  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'AddItems'", NULL);
+#endif
+  {
+   bool tolua_ret = (bool)  self->AddItems(*a_ItemStackList);
+   tolua_pushboolean(tolua_S,(bool)tolua_ret);
+  }
+ }
+ return 1;
+#ifndef TOLUA_RELEASE
+ tolua_lerror:
+ tolua_error(tolua_S,"#ferror in function 'AddItems'.",&tolua_err);
+ return 0;
+#endif
+}
+#endif //#ifndef TOLUA_DISABLE
+
+/* method: GetFirstEmptySlot of class  cItemGrid */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_cItemGrid_GetFirstEmptySlot00
+static int tolua_AllToLua_cItemGrid_GetFirstEmptySlot00(lua_State* tolua_S)
+{
+#ifndef TOLUA_RELEASE
+ tolua_Error tolua_err;
+ if (
+     !tolua_isusertype(tolua_S,1,"const cItemGrid",0,&tolua_err) ||
+     !tolua_isnoobj(tolua_S,2,&tolua_err)
+ )
+  goto tolua_lerror;
+ else
+#endif
+ {
+  const cItemGrid* self = (const cItemGrid*)  tolua_tousertype(tolua_S,1,0);
+#ifndef TOLUA_RELEASE
+  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'GetFirstEmptySlot'", NULL);
+#endif
+  {
+   int tolua_ret = (int)  self->GetFirstEmptySlot();
+   tolua_pushnumber(tolua_S,(lua_Number)tolua_ret);
+  }
+ }
+ return 1;
+#ifndef TOLUA_RELEASE
+ tolua_lerror:
+ tolua_error(tolua_S,"#ferror in function 'GetFirstEmptySlot'.",&tolua_err);
+ return 0;
+#endif
+}
+#endif //#ifndef TOLUA_DISABLE
+
+/* method: GetLastEmptySlot of class  cItemGrid */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_cItemGrid_GetLastEmptySlot00
+static int tolua_AllToLua_cItemGrid_GetLastEmptySlot00(lua_State* tolua_S)
+{
+#ifndef TOLUA_RELEASE
+ tolua_Error tolua_err;
+ if (
+     !tolua_isusertype(tolua_S,1,"const cItemGrid",0,&tolua_err) ||
+     !tolua_isnoobj(tolua_S,2,&tolua_err)
+ )
+  goto tolua_lerror;
+ else
+#endif
+ {
+  const cItemGrid* self = (const cItemGrid*)  tolua_tousertype(tolua_S,1,0);
+#ifndef TOLUA_RELEASE
+  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'GetLastEmptySlot'", NULL);
+#endif
+  {
+   int tolua_ret = (int)  self->GetLastEmptySlot();
+   tolua_pushnumber(tolua_S,(lua_Number)tolua_ret);
+  }
+ }
+ return 1;
+#ifndef TOLUA_RELEASE
+ tolua_lerror:
+ tolua_error(tolua_S,"#ferror in function 'GetLastEmptySlot'.",&tolua_err);
+ return 0;
+#endif
+}
+#endif //#ifndef TOLUA_DISABLE
+
+/* method: GetNextEmptySlot of class  cItemGrid */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_cItemGrid_GetNextEmptySlot00
+static int tolua_AllToLua_cItemGrid_GetNextEmptySlot00(lua_State* tolua_S)
+{
+#ifndef TOLUA_RELEASE
+ tolua_Error tolua_err;
+ if (
+     !tolua_isusertype(tolua_S,1,"const cItemGrid",0,&tolua_err) ||
+     !tolua_isnumber(tolua_S,2,0,&tolua_err) ||
+     !tolua_isnoobj(tolua_S,3,&tolua_err)
+ )
+  goto tolua_lerror;
+ else
+#endif
+ {
+  const cItemGrid* self = (const cItemGrid*)  tolua_tousertype(tolua_S,1,0);
+  int a_StartFrom = ((int)  tolua_tonumber(tolua_S,2,0));
+#ifndef TOLUA_RELEASE
+  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'GetNextEmptySlot'", NULL);
+#endif
+  {
+   int tolua_ret = (int)  self->GetNextEmptySlot(a_StartFrom);
+   tolua_pushnumber(tolua_S,(lua_Number)tolua_ret);
+  }
+ }
+ return 1;
+#ifndef TOLUA_RELEASE
+ tolua_lerror:
+ tolua_error(tolua_S,"#ferror in function 'GetNextEmptySlot'.",&tolua_err);
+ return 0;
+#endif
+}
+#endif //#ifndef TOLUA_DISABLE
+
+/* method: CopyToItems of class  cItemGrid */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_cItemGrid_CopyToItems00
+static int tolua_AllToLua_cItemGrid_CopyToItems00(lua_State* tolua_S)
+{
+#ifndef TOLUA_RELEASE
+ tolua_Error tolua_err;
+ if (
+     !tolua_isusertype(tolua_S,1,"const cItemGrid",0,&tolua_err) ||
+     (tolua_isvaluenil(tolua_S,2,&tolua_err) || !tolua_isusertype(tolua_S,2,"cItems",0,&tolua_err)) ||
+     !tolua_isnoobj(tolua_S,3,&tolua_err)
+ )
+  goto tolua_lerror;
+ else
+#endif
+ {
+  const cItemGrid* self = (const cItemGrid*)  tolua_tousertype(tolua_S,1,0);
+  cItems* a_Items = ((cItems*)  tolua_tousertype(tolua_S,2,0));
+#ifndef TOLUA_RELEASE
+  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'CopyToItems'", NULL);
+#endif
+  {
+   self->CopyToItems(*a_Items);
+  }
+ }
+ return 0;
+#ifndef TOLUA_RELEASE
+ tolua_lerror:
+ tolua_error(tolua_S,"#ferror in function 'CopyToItems'.",&tolua_err);
+ return 0;
+#endif
+}
+#endif //#ifndef TOLUA_DISABLE
+
+/* method: new of class  cChestEntity */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_cChestEntity_new00
+static int tolua_AllToLua_cChestEntity_new00(lua_State* tolua_S)
+{
+#ifndef TOLUA_RELEASE
+ tolua_Error tolua_err;
+ if (
+     !tolua_isusertable(tolua_S,1,"cChestEntity",0,&tolua_err) ||
+     !tolua_isnumber(tolua_S,2,0,&tolua_err) ||
+     !tolua_isnumber(tolua_S,3,0,&tolua_err) ||
+     !tolua_isnumber(tolua_S,4,0,&tolua_err) ||
+     !tolua_isnoobj(tolua_S,5,&tolua_err)
+ )
+  goto tolua_lerror;
+ else
+#endif
+ {
+  int a_BlockX = ((int)  tolua_tonumber(tolua_S,2,0));
+  int a_BlockY = ((int)  tolua_tonumber(tolua_S,3,0));
+  int a_BlockZ = ((int)  tolua_tonumber(tolua_S,4,0));
+  {
+   cChestEntity* tolua_ret = (cChestEntity*)  Mtolua_new((cChestEntity)(a_BlockX,a_BlockY,a_BlockZ));
+    tolua_pushusertype(tolua_S,(void*)tolua_ret,"cChestEntity");
+  }
+ }
+ return 1;
+#ifndef TOLUA_RELEASE
+ tolua_lerror:
+ tolua_error(tolua_S,"#ferror in function 'new'.",&tolua_err);
+ return 0;
+#endif
+}
+#endif //#ifndef TOLUA_DISABLE
+
+/* method: new_local of class  cChestEntity */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_cChestEntity_new00_local
+static int tolua_AllToLua_cChestEntity_new00_local(lua_State* tolua_S)
+{
+#ifndef TOLUA_RELEASE
+ tolua_Error tolua_err;
+ if (
+     !tolua_isusertable(tolua_S,1,"cChestEntity",0,&tolua_err) ||
+     !tolua_isnumber(tolua_S,2,0,&tolua_err) ||
+     !tolua_isnumber(tolua_S,3,0,&tolua_err) ||
+     !tolua_isnumber(tolua_S,4,0,&tolua_err) ||
+     !tolua_isnoobj(tolua_S,5,&tolua_err)
+ )
+  goto tolua_lerror;
+ else
+#endif
+ {
+  int a_BlockX = ((int)  tolua_tonumber(tolua_S,2,0));
+  int a_BlockY = ((int)  tolua_tonumber(tolua_S,3,0));
+  int a_BlockZ = ((int)  tolua_tonumber(tolua_S,4,0));
+  {
+   cChestEntity* tolua_ret = (cChestEntity*)  Mtolua_new((cChestEntity)(a_BlockX,a_BlockY,a_BlockZ));
+    tolua_pushusertype(tolua_S,(void*)tolua_ret,"cChestEntity");
+    tolua_register_gc(tolua_S,lua_gettop(tolua_S));
+  }
+ }
+ return 1;
+#ifndef TOLUA_RELEASE
+ tolua_lerror:
+ tolua_error(tolua_S,"#ferror in function 'new'.",&tolua_err);
+ return 0;
+#endif
+}
+#endif //#ifndef TOLUA_DISABLE
+
+/* method: GetSlot of class  cChestEntity */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_cChestEntity_GetSlot00
+static int tolua_AllToLua_cChestEntity_GetSlot00(lua_State* tolua_S)
+{
+#ifndef TOLUA_RELEASE
+ tolua_Error tolua_err;
+ if (
+     !tolua_isusertype(tolua_S,1,"const cChestEntity",0,&tolua_err) ||
+     !tolua_isnumber(tolua_S,2,0,&tolua_err) ||
+     !tolua_isnoobj(tolua_S,3,&tolua_err)
+ )
+  goto tolua_lerror;
+ else
+#endif
+ {
+  const cChestEntity* self = (const cChestEntity*)  tolua_tousertype(tolua_S,1,0);
+  int a_Slot = ((int)  tolua_tonumber(tolua_S,2,0));
+#ifndef TOLUA_RELEASE
+  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'GetSlot'", NULL);
+#endif
+  {
+   const cItem& tolua_ret = (const cItem&)  self->GetSlot(a_Slot);
+    tolua_pushusertype(tolua_S,(void*)&tolua_ret,"const cItem");
+  }
+ }
+ return 1;
+#ifndef TOLUA_RELEASE
+ tolua_lerror:
+ tolua_error(tolua_S,"#ferror in function 'GetSlot'.",&tolua_err);
+ return 0;
+#endif
+}
+#endif //#ifndef TOLUA_DISABLE
+
+/* method: SetSlot of class  cChestEntity */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_cChestEntity_SetSlot00
+static int tolua_AllToLua_cChestEntity_SetSlot00(lua_State* tolua_S)
+{
+#ifndef TOLUA_RELEASE
+ tolua_Error tolua_err;
+ if (
+     !tolua_isusertype(tolua_S,1,"cChestEntity",0,&tolua_err) ||
+     !tolua_isnumber(tolua_S,2,0,&tolua_err) ||
+     (tolua_isvaluenil(tolua_S,3,&tolua_err) || !tolua_isusertype(tolua_S,3,"const cItem",0,&tolua_err)) ||
+     !tolua_isnoobj(tolua_S,4,&tolua_err)
+ )
+  goto tolua_lerror;
+ else
+#endif
+ {
+  cChestEntity* self = (cChestEntity*)  tolua_tousertype(tolua_S,1,0);
+  int a_Slot = ((int)  tolua_tonumber(tolua_S,2,0));
+  const cItem* a_Item = ((const cItem*)  tolua_tousertype(tolua_S,3,0));
+#ifndef TOLUA_RELEASE
+  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'SetSlot'", NULL);
+#endif
+  {
+   self->SetSlot(a_Slot,*a_Item);
+  }
+ }
+ return 0;
+#ifndef TOLUA_RELEASE
+ tolua_lerror:
+ tolua_error(tolua_S,"#ferror in function 'SetSlot'.",&tolua_err);
+ return 0;
+#endif
+}
+#endif //#ifndef TOLUA_DISABLE
+
+/* method: UsedBy of class  cChestEntity */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_cChestEntity_UsedBy00
+static int tolua_AllToLua_cChestEntity_UsedBy00(lua_State* tolua_S)
+{
+#ifndef TOLUA_RELEASE
+ tolua_Error tolua_err;
+ if (
+     !tolua_isusertype(tolua_S,1,"cChestEntity",0,&tolua_err) ||
+     !tolua_isusertype(tolua_S,2,"cPlayer",0,&tolua_err) ||
+     !tolua_isnoobj(tolua_S,3,&tolua_err)
+ )
+  goto tolua_lerror;
+ else
+#endif
+ {
+  cChestEntity* self = (cChestEntity*)  tolua_tousertype(tolua_S,1,0);
+  cPlayer* a_Player = ((cPlayer*)  tolua_tousertype(tolua_S,2,0));
+#ifndef TOLUA_RELEASE
+  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'UsedBy'", NULL);
+#endif
+  {
+   self->UsedBy(a_Player);
+  }
+ }
+ return 0;
+#ifndef TOLUA_RELEASE
+ tolua_lerror:
+ tolua_error(tolua_S,"#ferror in function 'UsedBy'.",&tolua_err);
+ return 0;
+#endif
+}
+#endif //#ifndef TOLUA_DISABLE
+
+/* method: GetContents of class  cChestEntity */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_cChestEntity_GetContents00
+static int tolua_AllToLua_cChestEntity_GetContents00(lua_State* tolua_S)
+{
+#ifndef TOLUA_RELEASE
+ tolua_Error tolua_err;
+ if (
+     !tolua_isusertype(tolua_S,1,"cChestEntity",0,&tolua_err) ||
+     !tolua_isnoobj(tolua_S,2,&tolua_err)
+ )
+  goto tolua_lerror;
+ else
+#endif
+ {
+  cChestEntity* self = (cChestEntity*)  tolua_tousertype(tolua_S,1,0);
+#ifndef TOLUA_RELEASE
+  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'GetContents'", NULL);
+#endif
+  {
+   cItemGrid& tolua_ret = (cItemGrid&)  self->GetContents();
+    tolua_pushusertype(tolua_S,(void*)&tolua_ret,"cItemGrid");
+  }
+ }
+ return 1;
+#ifndef TOLUA_RELEASE
+ tolua_lerror:
+ tolua_error(tolua_S,"#ferror in function 'GetContents'.",&tolua_err);
+ return 0;
+#endif
+}
+#endif //#ifndef TOLUA_DISABLE
+
+/* get function: __cBlockEntityWindowOwner__ of class  cChestEntity */
+#ifndef TOLUA_DISABLE_tolua_get_cChestEntity___cBlockEntityWindowOwner__
+static int tolua_get_cChestEntity___cBlockEntityWindowOwner__(lua_State* tolua_S)
+{
+  cChestEntity* self = (cChestEntity*)  tolua_tousertype(tolua_S,1,0);
+#ifndef TOLUA_RELEASE
+  if (!self) tolua_error(tolua_S,"invalid 'self' in accessing variable '__cBlockEntityWindowOwner__'",NULL);
+#endif
+#ifdef __cplusplus
+   tolua_pushusertype(tolua_S,(void*)static_cast<cBlockEntityWindowOwner*>(self), "cBlockEntityWindowOwner");
+#else
+   tolua_pushusertype(tolua_S,(void*)((cBlockEntityWindowOwner*)self), "cBlockEntityWindowOwner");
+#endif
+ return 1;
+}
+#endif //#ifndef TOLUA_DISABLE
+
+ class Lua__cChestEntity : public cChestEntity, public ToluaBase {
+public:
+	 void  UsedBy( cPlayer* a_Player) {
+		if (push_method("UsedBy",  tolua_AllToLua_cChestEntity_UsedBy00)) {
+			tolua_pushusertype(lua_state, (void*)a_Player, "cPlayer");
+			ToluaBase::dbcall(lua_state, 2, 0);
+		} else {
+			return ( void ) cChestEntity:: UsedBy(a_Player);
+		};
+	};
+
+	 void cChestEntity__UsedBy( cPlayer* a_Player) {
+		return ( void )cChestEntity::UsedBy(a_Player);
+	};
+	 Lua__cChestEntity( int a_BlockX, int a_BlockY, int a_BlockZ): cChestEntity(a_BlockX,a_BlockY,a_BlockZ){};
+};
+
+/* method: tolua__set_instance of class  Lua__cChestEntity */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_Lua__cChestEntity_tolua__set_instance00
+static int tolua_AllToLua_Lua__cChestEntity_tolua__set_instance00(lua_State* tolua_S)
+{
+#ifndef TOLUA_RELEASE
+ tolua_Error tolua_err;
+ if (
+     !tolua_isusertype(tolua_S,1,"Lua__cChestEntity",0,&tolua_err) ||
+     !tolua_isnoobj(tolua_S,3,&tolua_err)
+ )
+  goto tolua_lerror;
+ else
+#endif
+ {
+  Lua__cChestEntity* self = (Lua__cChestEntity*)  tolua_tousertype(tolua_S,1,0);
+  lua_State* L =  tolua_S;
+  lua_Object lo = ((lua_Object)  tolua_tovalue(tolua_S,2,0));
+#ifndef TOLUA_RELEASE
+  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'tolua__set_instance'", NULL);
+#endif
+  {
+   self->tolua__set_instance(L,lo);
+  }
+ }
+ return 0;
+#ifndef TOLUA_RELEASE
+ tolua_lerror:
+ tolua_error(tolua_S,"#ferror in function 'tolua__set_instance'.",&tolua_err);
+ return 0;
+#endif
+}
+#endif //#ifndef TOLUA_DISABLE
+
+/* method: cChestEntity__UsedBy of class  Lua__cChestEntity */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_Lua__cChestEntity_cChestEntity__UsedBy00
+static int tolua_AllToLua_Lua__cChestEntity_cChestEntity__UsedBy00(lua_State* tolua_S)
+{
+#ifndef TOLUA_RELEASE
+ tolua_Error tolua_err;
+ if (
+     !tolua_isusertype(tolua_S,1,"Lua__cChestEntity",0,&tolua_err) ||
+     !tolua_isusertype(tolua_S,2,"cPlayer",0,&tolua_err) ||
+     !tolua_isnoobj(tolua_S,3,&tolua_err)
+ )
+  goto tolua_lerror;
+ else
+#endif
+ {
+  Lua__cChestEntity* self = (Lua__cChestEntity*)  tolua_tousertype(tolua_S,1,0);
+  cPlayer* a_Player = ((cPlayer*)  tolua_tousertype(tolua_S,2,0));
+#ifndef TOLUA_RELEASE
+  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'cChestEntity__UsedBy'", NULL);
+#endif
+  {
+   self->cChestEntity__UsedBy(a_Player);
+  }
+ }
+ return 0;
+#ifndef TOLUA_RELEASE
+ tolua_lerror:
+ tolua_error(tolua_S,"#ferror in function 'cChestEntity__UsedBy'.",&tolua_err);
+ return 0;
+#endif
+}
+#endif //#ifndef TOLUA_DISABLE
+
+/* method: new of class  Lua__cChestEntity */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_Lua__cChestEntity_new00
+static int tolua_AllToLua_Lua__cChestEntity_new00(lua_State* tolua_S)
+{
+#ifndef TOLUA_RELEASE
+ tolua_Error tolua_err;
+ if (
+     !tolua_isusertable(tolua_S,1,"Lua__cChestEntity",0,&tolua_err) ||
+     !tolua_isnumber(tolua_S,2,0,&tolua_err) ||
+     !tolua_isnumber(tolua_S,3,0,&tolua_err) ||
+     !tolua_isnumber(tolua_S,4,0,&tolua_err) ||
+     !tolua_isnoobj(tolua_S,5,&tolua_err)
+ )
+  goto tolua_lerror;
+ else
+#endif
+ {
+  int a_BlockX = ((int)  tolua_tonumber(tolua_S,2,0));
+  int a_BlockY = ((int)  tolua_tonumber(tolua_S,3,0));
+  int a_BlockZ = ((int)  tolua_tonumber(tolua_S,4,0));
+  {
+   Lua__cChestEntity* tolua_ret = (Lua__cChestEntity*)  Mtolua_new((Lua__cChestEntity)(a_BlockX,a_BlockY,a_BlockZ));
+    tolua_pushusertype(tolua_S,(void*)tolua_ret,"Lua__cChestEntity");
+  }
+ }
+ return 1;
+#ifndef TOLUA_RELEASE
+ tolua_lerror:
+ tolua_error(tolua_S,"#ferror in function 'new'.",&tolua_err);
+ return 0;
+#endif
+}
+#endif //#ifndef TOLUA_DISABLE
+
+/* method: new_local of class  Lua__cChestEntity */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_Lua__cChestEntity_new00_local
+static int tolua_AllToLua_Lua__cChestEntity_new00_local(lua_State* tolua_S)
+{
+#ifndef TOLUA_RELEASE
+ tolua_Error tolua_err;
+ if (
+     !tolua_isusertable(tolua_S,1,"Lua__cChestEntity",0,&tolua_err) ||
+     !tolua_isnumber(tolua_S,2,0,&tolua_err) ||
+     !tolua_isnumber(tolua_S,3,0,&tolua_err) ||
+     !tolua_isnumber(tolua_S,4,0,&tolua_err) ||
+     !tolua_isnoobj(tolua_S,5,&tolua_err)
  )
   goto tolua_lerror;
  else
@@ -24046,6 +24772,7 @@ TOLUA_API int tolua_AllToLua_open (lua_State* tolua_S)
    tolua_function(tolua_S,"GetMaxDuration",tolua_AllToLua_cItem_GetMaxDuration00);
    tolua_function(tolua_S,"DamageItem",tolua_AllToLua_cItem_DamageItem00);
    tolua_function(tolua_S,"HasDuration",tolua_AllToLua_cItem_HasDuration00);
+   tolua_function(tolua_S,"IsStackableWith",tolua_AllToLua_cItem_IsStackableWith00);
    tolua_function(tolua_S,"IsEnchantable",tolua_AllToLua_cItem_IsEnchantable00);
    tolua_variable(tolua_S,"m_ItemType",tolua_get_cItem_m_ItemType,tolua_set_cItem_m_ItemType);
    tolua_variable(tolua_S,"m_ItemCount",tolua_get_cItem_m_ItemCount,tolua_set_cItem_m_ItemCount);
@@ -24062,6 +24789,29 @@ TOLUA_API int tolua_AllToLua_open (lua_State* tolua_S)
    tolua_function(tolua_S,"Add",tolua_AllToLua_cItems_Add01);
    tolua_function(tolua_S,"Set",tolua_AllToLua_cItems_Set01);
   tolua_endmodule(tolua_S);
+  tolua_cclass(tolua_S,"cItemGrid","cItemGrid","",NULL);
+  tolua_beginmodule(tolua_S,"cItemGrid");
+   tolua_function(tolua_S,"GetWidth",tolua_AllToLua_cItemGrid_GetWidth00);
+   tolua_function(tolua_S,"GetHeight",tolua_AllToLua_cItemGrid_GetHeight00);
+   tolua_function(tolua_S,"GetNumSlots",tolua_AllToLua_cItemGrid_GetNumSlots00);
+   tolua_function(tolua_S,"GetSlotNum",tolua_AllToLua_cItemGrid_GetSlotNum00);
+   tolua_function(tolua_S,"GetItem",tolua_AllToLua_cItemGrid_GetItem00);
+   tolua_function(tolua_S,"GetItem",tolua_AllToLua_cItemGrid_GetItem01);
+   tolua_function(tolua_S,"GetItem",tolua_AllToLua_cItemGrid_GetItem02);
+   tolua_function(tolua_S,"GetItem",tolua_AllToLua_cItemGrid_GetItem03);
+   tolua_function(tolua_S,"SetItem",tolua_AllToLua_cItemGrid_SetItem00);
+   tolua_function(tolua_S,"SetItem",tolua_AllToLua_cItemGrid_SetItem01);
+   tolua_function(tolua_S,"SetItem",tolua_AllToLua_cItemGrid_SetItem02);
+   tolua_function(tolua_S,"SetItem",tolua_AllToLua_cItemGrid_SetItem03);
+   tolua_function(tolua_S,"Clear",tolua_AllToLua_cItemGrid_Clear00);
+   tolua_function(tolua_S,"HowManyCanFit",tolua_AllToLua_cItemGrid_HowManyCanFit00);
+   tolua_function(tolua_S,"AddItem",tolua_AllToLua_cItemGrid_AddItem00);
+   tolua_function(tolua_S,"AddItems",tolua_AllToLua_cItemGrid_AddItems00);
+   tolua_function(tolua_S,"GetFirstEmptySlot",tolua_AllToLua_cItemGrid_GetFirstEmptySlot00);
+   tolua_function(tolua_S,"GetLastEmptySlot",tolua_AllToLua_cItemGrid_GetLastEmptySlot00);
+   tolua_function(tolua_S,"GetNextEmptySlot",tolua_AllToLua_cItemGrid_GetNextEmptySlot00);
+   tolua_function(tolua_S,"CopyToItems",tolua_AllToLua_cItemGrid_CopyToItems00);
+  tolua_endmodule(tolua_S);
   #ifdef __cplusplus
   tolua_cclass(tolua_S,"cChestEntity","cChestEntity","cBlockEntity",tolua_collect_cChestEntity);
   #else
@@ -24074,6 +24824,7 @@ TOLUA_API int tolua_AllToLua_open (lua_State* tolua_S)
    tolua_function(tolua_S,"GetSlot",tolua_AllToLua_cChestEntity_GetSlot00);
    tolua_function(tolua_S,"SetSlot",tolua_AllToLua_cChestEntity_SetSlot00);
    tolua_function(tolua_S,"UsedBy",tolua_AllToLua_cChestEntity_UsedBy00);
+   tolua_function(tolua_S,"GetContents",tolua_AllToLua_cChestEntity_GetContents00);
    tolua_variable(tolua_S,"__cBlockEntityWindowOwner__",tolua_get_cChestEntity___cBlockEntityWindowOwner__,NULL);
   tolua_endmodule(tolua_S);
   #ifdef __cplusplus
diff --git a/source/Bindings.h b/source/Bindings.h
index 726dbd1ac..b52c58a1a 100644
--- a/source/Bindings.h
+++ b/source/Bindings.h
@@ -1,6 +1,6 @@
 /*
 ** Lua binding: AllToLua
-** Generated automatically by tolua++-1.0.92 on 04/06/13 23:17:21.
+** Generated automatically by tolua++-1.0.92 on 04/10/13 21:35:56.
 */
 
 /* Exported function */
diff --git a/source/ChestEntity.cpp b/source/ChestEntity.cpp
index d3c062924..aad8844c6 100644
--- a/source/ChestEntity.cpp
+++ b/source/ChestEntity.cpp
@@ -24,7 +24,8 @@ class cRoot;
 
 
 cChestEntity::cChestEntity(int a_BlockX, int a_BlockY, int a_BlockZ) :
-	super(E_BLOCK_CHEST, a_BlockX, a_BlockY, a_BlockZ)
+	super(E_BLOCK_CHEST, a_BlockX, a_BlockY, a_BlockZ),
+	m_Contents(c_ChestWidth, c_ChestHeight)
 {
 	cBlockEntityWindowOwner::SetBlockEntity(this);
 }
@@ -34,7 +35,8 @@ cChestEntity::cChestEntity(int a_BlockX, int a_BlockY, int a_BlockZ) :
 
 
 cChestEntity::cChestEntity(int a_BlockX, int a_BlockY, int a_BlockZ, cWorld * a_World) :
-	super(E_BLOCK_CHEST, a_BlockX, a_BlockY, a_BlockZ, a_World)
+	super(E_BLOCK_CHEST, a_BlockX, a_BlockY, a_BlockZ, a_World),
+	m_Contents(c_ChestWidth, c_ChestHeight)
 {
 	cBlockEntityWindowOwner::SetBlockEntity(this);
 }
@@ -60,14 +62,8 @@ void cChestEntity::Destroy(void)
 {
 	// Drop items
 	cItems Pickups;
-	for (int i = 0; i < c_ChestHeight * c_ChestWidth; ++i)
-	{
-		if (!m_Content[i].IsEmpty())
-		{
-			Pickups.push_back(m_Content[i]);
-			m_Content[i].Empty();
-		}
-	}
+	m_Contents.CopyToItems(Pickups);
+	m_Contents.Clear();
 	m_World->SpawnItemPickups(Pickups, m_PosX, m_PosY, m_PosZ);
 }
 
@@ -75,67 +71,6 @@ void cChestEntity::Destroy(void)
 
 
 
-const cItem * cChestEntity::GetSlot(int a_Slot) const
-{
-	if ((a_Slot > -1) && (a_Slot < c_ChestHeight * c_ChestWidth))
-	{
-		return &m_Content[a_Slot];
-	}
-	return NULL;
-}
-
-
-
-
-
-void cChestEntity::SetSlot(int a_Slot, const cItem & a_Item)
-{
-	if ((a_Slot > -1) && (a_Slot < c_ChestHeight * c_ChestWidth))
-	{
-		m_Content[a_Slot] = a_Item;
-	}
-}
-
-
-
-
-
-void cChestEntity::GenerateRandomLootWithBooks(const cLootProbab * a_LootProbabs, int a_CountLootProbabs, int a_NumSlots, int a_Seed)
-{
-	// Calculate the total weight:
-	int TotalProbab = 1;
-	for (int i = 0; i < a_CountLootProbabs; i++)
-	{
-		TotalProbab += a_LootProbabs[i].m_Weight;
-	}
-	
-	// Pick the loot items:
-	cNoise Noise(a_Seed);
-	for (int i = 0; i < a_NumSlots; i++)
-	{
-		int Rnd = (Noise.IntNoise1DInt(i) / 7);
-		int LootRnd = Rnd % TotalProbab;
-		Rnd >>= 8;
-		cItem CurrentLoot = cItem(E_ITEM_BOOK, 1, 0);  // TODO: enchantment
-		for (int j = 0; j < a_CountLootProbabs; j++)
-		{
-			LootRnd -= a_LootProbabs[i].m_Weight;
-			if (LootRnd < 0)
-			{
-				CurrentLoot = a_LootProbabs[i].m_Item;
-				CurrentLoot.m_ItemCount = a_LootProbabs[i].m_MinAmount + (Rnd % (a_LootProbabs[i].m_MaxAmount - a_LootProbabs[i].m_MinAmount));
-				Rnd >>= 8;
-				break;
-			}
-		}  // for j - a_LootProbabs[]
-		SetSlot(Rnd % ARRAYCOUNT(m_Content), CurrentLoot);
-	}  // for i - NumSlots
-}
-
-
-
-
-
 bool cChestEntity::LoadFromJson(const Json::Value & a_Value)
 {
 	m_PosX = a_Value.get("x", 0).asInt();
@@ -164,16 +99,11 @@ void cChestEntity::SaveToJson(Json::Value & a_Value)
 	a_Value["y"] = m_PosY;
 	a_Value["z"] = m_PosZ;
 
-	unsigned int NumSlots = c_ChestHeight*c_ChestWidth;
 	Json::Value AllSlots;
-	for (unsigned int i = 0; i < NumSlots; i++)
+	for (int i = m_Contents.GetNumSlots(); i >= 0; i--)
 	{
 		Json::Value Slot;
-		const cItem * Item = GetSlot(i);
-		if (Item != NULL)
-		{
-			Item->GetJson(Slot);
-		}
+		m_Contents.GetItem(i).GetJson(Slot);
 		AllSlots.append(Slot);
 	}
 	a_Value["Slots"] = AllSlots;
diff --git a/source/ChestEntity.h b/source/ChestEntity.h
index 03102a80b..be8172073 100644
--- a/source/ChestEntity.h
+++ b/source/ChestEntity.h
@@ -3,6 +3,7 @@
 
 #include "BlockEntity.h"
 #include "UI/WindowOwner.h"
+#include "ItemGrid.h"
 
 
 
@@ -15,8 +16,6 @@ namespace Json
 
 class cClientHandle;
 class cServer;
-class cItem;
-class cLootProbab;
 class cNBTData;
 
 
@@ -41,14 +40,11 @@ public:
 
 	static const char * GetClassStatic() { return "cChestEntity"; }
 
-	const cItem * GetSlot(int a_Slot) const;                   // tolua_export
-	void          SetSlot(int a_Slot, const cItem & a_Item );  // tolua_export
+	// tolua_begin
+	const cItem & GetSlot(int a_Slot) const { return m_Contents.GetItem(a_Slot); }
+	void          SetSlot(int a_Slot, const cItem & a_Item ) { m_Contents.SetItem(a_Slot, a_Item); }
+	// tolua_end
 	
-	/** Generates random loot from the specified loot probability table, with a chance of enchanted books added.
-	A total of a_NumSlots are taken by the loot
-	*/
-	void GenerateRandomLootWithBooks(const cLootProbab * a_LootProbabs, int a_CountLootProbabs, int a_NumSlots, int a_Seed);
-
 	bool LoadFromJson( const Json::Value& a_Value );
 	
 	// cBlockEntity overrides:
@@ -59,14 +55,16 @@ public:
 	/// Opens a new chest window for this chests. Scans for neighbors to open a double chest window, if appropriate.
 	void OpenNewWindow(void);
 
-	cItem * GetContents(void) { return m_Content; }
+	const cItemGrid & GetContents(void) const { return m_Contents; }
+	
+	cItemGrid & GetContents(void) { return m_Contents; }  // tolua_export
 
 	static const int c_ChestWidth = 9;
 	static const int c_ChestHeight = 3;
 	
 private:
 
-	cItem m_Content[c_ChestWidth * c_ChestHeight];  // TODO: replace this by a generic ItemGridHolder
+	cItemGrid m_Contents;
 } ;  // tolua_export
 
 
diff --git a/source/Generating/MineShafts.cpp b/source/Generating/MineShafts.cpp
index 4a56b1f4a..fe93cec65 100644
--- a/source/Generating/MineShafts.cpp
+++ b/source/Generating/MineShafts.cpp
@@ -798,7 +798,7 @@ void cMineShaftCorridor::PlaceChest(cChunkDesc & a_ChunkDesc)
 		cNoise Noise(a_ChunkDesc.GetChunkX() ^ a_ChunkDesc.GetChunkZ());
 		int NumSlots = 3 + ((Noise.IntNoise3DInt(x, m_BoundingBox.p1.y, z) / 11) % 4);
 		int Seed = Noise.IntNoise2DInt(x, z);
-		ChestEntity->GenerateRandomLootWithBooks(LootProbab, ARRAYCOUNT(LootProbab), NumSlots, Seed);
+		ChestEntity->GetContents().GenerateRandomLootWithBooks(LootProbab, ARRAYCOUNT(LootProbab), NumSlots, Seed);
 		a_ChunkDesc.AddBlockEntity(ChestEntity);
 	}
 }
diff --git a/source/Item.cpp b/source/Item.cpp
index 759b23042..b96500a30 100644
--- a/source/Item.cpp
+++ b/source/Item.cpp
@@ -8,6 +8,21 @@
 
 
 
+bool cItem::IsStackableWith(const cItem & a_OtherStack)
+{
+	if (a_OtherStack.m_ItemType != m_ItemType)
+	{
+		return false;
+	}
+	
+	// TODO: match enchantments etc.
+	return true;
+}
+
+
+
+
+
 void cItem::GetJson( Json::Value & a_OutValue ) const
 {
 	a_OutValue["ID"] = m_ItemType;
diff --git a/source/Item.h b/source/Item.h
index 9384ece22..194b6bff6 100644
--- a/source/Item.h
+++ b/source/Item.h
@@ -106,6 +106,9 @@ public:
 	}
 
 	inline bool HasDuration() { return GetMaxDuration() > 0; }
+	
+	/// Returns true if this itemstack can stack with the specified stack (types match, enchantments etc.) ItemCounts are ignored!
+	bool IsStackableWith(const cItem & a_OtherStack);
 
 	// tolua_end
 	void GetJson( Json::Value & a_OutValue ) const;
diff --git a/source/ItemGrid.cpp b/source/ItemGrid.cpp
new file mode 100644
index 000000000..f79bb5537
--- /dev/null
+++ b/source/ItemGrid.cpp
@@ -0,0 +1,349 @@
+
+// ItemGrid.cpp
+
+// Implements the cItemGrid class representing a storage for items in a XY grid (chests, dispensers, inventory etc.)
+
+#include "Globals.h"
+#include "ItemGrid.h"
+#include "Items/ItemHandler.h"
+#include "Noise.h"
+
+
+
+
+
+cItemGrid::cItemGrid(int a_Width, int a_Height) :
+	m_Width(a_Width),
+	m_Height(a_Height),
+	m_NumSlots(a_Width * a_Height),
+	m_Items(new cItem[a_Width * a_Height])
+{
+}
+
+
+
+
+
+cItemGrid::~cItemGrid()
+{
+	delete[] m_Items;
+}
+
+
+
+
+
+int cItemGrid::GetSlotNum(int a_X, int a_Y) const
+{
+	if (
+		(a_X < 0) || (a_X >= m_Width) ||
+		(a_Y < 0) || (a_Y >= m_Height)
+	)
+	{
+		LOGWARNING("%s: coords out of range: (%d, %d) in grid of size (%d, %d)",
+			__FUNCTION__, a_X, a_Y, m_Width, m_Height
+		);
+		return -1;
+	}
+	return a_X + m_Width * a_Y;
+}
+
+
+
+
+
+void cItemGrid::GetSlotCoords(int a_SlotNum, int & a_X, int & a_Y) const
+{
+	if ((a_SlotNum < 0) || (a_SlotNum >= m_NumSlots))
+	{
+		LOGWARNING("%s: SlotNum out of range: %d in grid of range %d",
+			__FUNCTION__, a_SlotNum, m_NumSlots
+		);
+		a_X = -1;
+		a_Y = -1;
+		return;
+	}
+	a_X = a_SlotNum % m_Width;
+	a_Y = a_SlotNum / m_Width;
+}
+
+
+
+
+
+const cItem & cItemGrid::GetItem(int a_X, int a_Y) const
+{
+	return GetItem(GetSlotNum(a_X, a_Y));
+}
+
+
+
+
+
+cItem & cItemGrid::GetItem(int a_X, int a_Y)
+{
+	return GetItem(GetSlotNum(a_X, a_Y));
+}
+
+
+
+
+
+const cItem & cItemGrid::GetItem(int a_SlotNum) const
+{
+	if ((a_SlotNum < 0) || (a_SlotNum >= m_NumSlots))
+	{
+		LOGWARNING("%s: Invalid slot number, %d out of %d slots",
+			__FUNCTION__, a_SlotNum, m_NumSlots
+		);
+		return m_Items[0];
+	}
+	return m_Items[a_SlotNum];
+}
+
+
+
+
+
+cItem & cItemGrid::GetItem(int a_SlotNum)
+{
+	if ((a_SlotNum < 0) || (a_SlotNum >= m_NumSlots))
+	{
+		LOGWARNING("%s: Invalid slot number, %d out of %d slots",
+			__FUNCTION__, a_SlotNum, m_NumSlots
+		);
+		return m_Items[0];
+	}
+	return m_Items[a_SlotNum];
+}
+
+
+
+
+
+void cItemGrid::SetItem(int a_X, int a_Y, const cItem & a_Item)
+{
+	SetItem(GetSlotNum(a_X, a_Y), a_Item);
+}
+
+
+
+
+
+void cItemGrid::SetItem(int a_X, int a_Y, short a_ItemType, char a_ItemCount, short a_ItemDamage)
+{
+	SetItem(GetSlotNum(a_X, a_Y), cItem(a_ItemType, a_ItemCount, a_ItemDamage));
+}
+
+
+
+
+
+void cItemGrid::SetItem(int a_SlotNum, const cItem & a_Item)
+{
+	if ((a_SlotNum < 0) || (a_SlotNum >= m_NumSlots))
+	{
+		LOGWARNING("%s: Invalid slot number %d out of %d slots",
+			__FUNCTION__, a_SlotNum, m_NumSlots
+		);
+		return;
+	}
+	m_Items[a_SlotNum] = a_Item;
+}
+
+
+
+
+
+void cItemGrid::SetItem(int a_SlotNum, short a_ItemType, char a_ItemCount, short a_ItemDamage)
+{
+	SetItem(a_SlotNum, cItem(a_ItemType, a_ItemCount, a_ItemDamage));
+}
+
+
+
+
+
+void cItemGrid::Clear(void)
+{
+	for (int i = 0; i < m_NumSlots; i++)
+	{
+		m_Items[i].Empty();
+	}
+}
+
+
+
+
+
+int cItemGrid::HowManyCanFit(const cItem & a_ItemStack)
+{
+	char NumLeft = a_ItemStack.m_ItemCount;
+	int MaxStack = ItemHandler(a_ItemStack.m_ItemType)->GetMaxStackSize();
+	for (int i = m_NumSlots - 1; i >= 0; i--)
+	{
+		if (m_Items[i].IsEmpty())
+		{
+			NumLeft -= MaxStack;
+		}
+		else if (m_Items[i].IsStackableWith(a_ItemStack))
+		{
+			NumLeft -= MaxStack - m_Items[i].m_ItemCount;
+		}
+		if (NumLeft <= 0)
+		{
+			// All items fit
+			return a_ItemStack.m_ItemCount;
+		}
+	}  // for i - m_Items[]
+	return a_ItemStack.m_ItemCount - NumLeft;
+}
+
+
+
+
+
+bool cItemGrid::AddItem(cItem & a_ItemStack)
+{
+	int NumLeft = a_ItemStack.m_ItemCount;
+	int MaxStack = ItemHandler(a_ItemStack.m_ItemType)->GetMaxStackSize();
+	for (int i = m_NumSlots - 1; i >= 0; i--)
+	{
+		if (m_Items[i].IsEmpty())
+		{
+			m_Items[i] = a_ItemStack;
+			m_Items[i].m_ItemCount = std::min(MaxStack, NumLeft);
+			NumLeft -= m_Items[i].m_ItemCount;
+		}
+		else if (m_Items[i].IsStackableWith(a_ItemStack))
+		{
+			int PrevCount = m_Items[i].m_ItemCount;
+			m_Items[i].m_ItemCount = std::min(MaxStack, PrevCount + NumLeft);
+			NumLeft -= m_Items[i].m_ItemCount - PrevCount;
+		}
+		if (NumLeft <= 0)
+		{
+			// All items fit
+			return true;
+		}
+	}  // for i - m_Items[]
+	return (a_ItemStack.m_ItemCount > NumLeft);
+}
+
+
+
+
+
+bool cItemGrid::AddItems(cItems & a_ItemStackList)
+{
+	bool res;
+	for (cItems::iterator itr = a_ItemStackList.begin(); itr != a_ItemStackList.end();)
+	{
+		res = AddItem(*itr) | res;
+		if (itr->IsEmpty())
+		{
+			itr = a_ItemStackList.erase(itr);
+		}
+		else
+		{
+			++itr;
+		}
+	}
+	return res;
+}
+
+
+
+
+
+int cItemGrid::GetFirstEmptySlot(void) const
+{
+	return GetNextEmptySlot(-1);
+}
+
+
+
+
+
+int cItemGrid::GetLastEmptySlot(void) const
+{
+	for (int i = m_NumSlots - 1; i >= 0; i--)
+	{
+		if (m_Items[i].IsEmpty())
+		{
+			return i;
+		}
+	}
+	return -1;
+}
+
+
+
+
+
+int cItemGrid::GetNextEmptySlot(int a_StartFrom) const
+{
+	for (int i = a_StartFrom + 1; i < m_NumSlots; i++)
+	{
+		if (m_Items[i].IsEmpty())
+		{
+			return i;
+		}
+	}
+	return -1;
+}
+
+
+
+
+
+void cItemGrid::CopyToItems(cItems & a_Items) const
+{
+	for (int i = 0; i < m_NumSlots; i++)
+	{
+		if (!m_Items[i].IsEmpty())
+		{
+			a_Items.push_back(m_Items[i]);
+		}
+	}  // for i - m_Items[]
+}
+
+
+
+
+
+void cItemGrid::GenerateRandomLootWithBooks(const cLootProbab * a_LootProbabs, int a_CountLootProbabs, int a_NumSlots, int a_Seed)
+{
+	// Calculate the total weight:
+	int TotalProbab = 1;
+	for (int i = 0; i < a_CountLootProbabs; i++)
+	{
+		TotalProbab += a_LootProbabs[i].m_Weight;
+	}
+	
+	// Pick the loot items:
+	cNoise Noise(a_Seed);
+	for (int i = 0; i < a_NumSlots; i++)
+	{
+		int Rnd = (Noise.IntNoise1DInt(i) / 7);
+		int LootRnd = Rnd % TotalProbab;
+		Rnd >>= 8;
+		cItem CurrentLoot = cItem(E_ITEM_BOOK, 1, 0);  // TODO: enchantment
+		for (int j = 0; j < a_CountLootProbabs; j++)
+		{
+			LootRnd -= a_LootProbabs[i].m_Weight;
+			if (LootRnd < 0)
+			{
+				CurrentLoot = a_LootProbabs[i].m_Item;
+				CurrentLoot.m_ItemCount = a_LootProbabs[i].m_MinAmount + (Rnd % (a_LootProbabs[i].m_MaxAmount - a_LootProbabs[i].m_MinAmount));
+				Rnd >>= 8;
+				break;
+			}
+		}  // for j - a_LootProbabs[]
+		SetItem(Rnd % m_NumSlots, CurrentLoot);
+	}  // for i - NumSlots
+}
+
+
+
+
diff --git a/source/ItemGrid.h b/source/ItemGrid.h
new file mode 100644
index 000000000..91eba6f33
--- /dev/null
+++ b/source/ItemGrid.h
@@ -0,0 +1,94 @@
+
+// ItemGrid.h
+
+// Declares the cItemGrid class representing a storage for items in a XY grid (chests, dispensers, inventory etc.)
+
+
+
+
+#pragma once
+
+#include "Item.h"
+
+
+
+
+
+// tolua_begin
+class cItemGrid
+{
+public:
+	// tolua_end
+	cItemGrid(int a_Width, int a_Height);
+	
+	~cItemGrid();
+	
+	// tolua_begin
+	int GetWidth   (void) const { return m_Width; }
+	int GetHeight  (void) const { return m_Height; }
+	int GetNumSlots(void) const { return m_NumSlots; }
+	
+	/// Converts XY coords into slot number; returns -1 on invalid coords
+	int GetSlotNum(int a_X, int a_Y) const;
+	
+	// tolua_end
+	/// Converts slot number into XY coords; sets coords to -1 on invalid slot number. Exported in ManualBindings.cpp
+	void GetSlotCoords(int a_SlotNum, int & a_X, int & a_Y) const;
+	// tolua_begin
+	
+	// Retrieve items by coords or slot number; Logs warning and returns the first item on invalid coords / slotnum
+	const cItem & GetItem(int a_X, int a_Y) const;
+	cItem &       GetItem(int a_X, int a_Y);
+	const cItem & GetItem(int a_SlotNum) const;
+	cItem &       GetItem(int a_SlotNum);
+	
+	// Set item by coords or slot number; Logs warning and doesn't set on invalid coords / slotnum
+	void SetItem(int a_X, int a_Y, const cItem & a_Item);
+	void SetItem(int a_X, int a_Y, short a_ItemType, char a_ItemCount, short a_ItemDamage);
+	void SetItem(int a_SlotNum, const cItem & a_Item);
+	void SetItem(int a_SlotNum, short a_ItemType, char a_ItemCount, short a_ItemDamage);
+	
+	/// Sets all items as empty
+	void Clear(void);
+	
+	/// Returns number of items out of a_ItemStack that can fit in the storage
+	int HowManyCanFit(const cItem & a_ItemStack);
+	
+	/// Adds as many items out of a_ItemStack as can fit; the rest is left in a_ItemStack; returns true if any items fit.
+	bool AddItem(cItem & a_ItemStack);
+	
+	/// Same as AddItem, but works on an entire list of item stacks
+	bool AddItems(cItems & a_ItemStackList);
+	
+	/// Returns the index of the first empty slot; -1 if all full
+	int GetFirstEmptySlot(void) const;
+
+	/// Returns the index of the last empty slot; -1 if all full
+	int GetLastEmptySlot(void) const;
+	
+	/// Returns the index of the first empty slot following a_StartFrom (a_StartFrom is not checked)
+	int GetNextEmptySlot(int a_StartFrom) const;
+	
+	/// Copies the contents into a cItems object
+	void CopyToItems(cItems & a_Items) const;
+
+	// tolua_end
+	
+	/** Generates random loot from the specified loot probability table, with a chance of enchanted books added.
+	A total of a_NumSlots are taken by the loot.
+	Cannot export to Lua due to raw array a_LootProbabs.
+	*/
+	void GenerateRandomLootWithBooks(const cLootProbab * a_LootProbabs, int a_CountLootProbabs, int a_NumSlots, int a_Seed);
+
+	// tolua_begin
+	
+protected:
+	int     m_Width;
+	int     m_Height;
+	int     m_NumSlots;  // m_Width * m_Height, for easier validity checking in the access functions
+	cItem * m_Items;  // x + m_Width * y
+} ;
+// tolua_end
+
+
+
diff --git a/source/ManualBindings.cpp b/source/ManualBindings.cpp
index 358e582ee..bf8776457 100644
--- a/source/ManualBindings.cpp
+++ b/source/ManualBindings.cpp
@@ -968,6 +968,10 @@ static int copy_lua_values(lua_State * a_Source, lua_State * a_Destination, int
 	return 1;
 }
 
+
+
+
+
 static int tolua_cPlugin_Call(lua_State* tolua_S)
 {
 	cPlugin_NewLua * self = (cPlugin_NewLua *) tolua_tousertype(tolua_S, 1, 0);
@@ -1095,6 +1099,40 @@ static int tolua_get_HTTPRequest_FormData(lua_State* tolua_S)
 
 
 
+static int Lua_ItemGrid_GetSlotCoords(lua_State * L)
+{
+	tolua_Error tolua_err;
+	if (
+		!tolua_isusertype(L, 1, "const cItemGrid", 0, &tolua_err) ||
+		!tolua_isnumber  (L, 2, 0, &tolua_err) ||
+		!tolua_isnoobj   (L, 3, &tolua_err)
+	)
+	{
+		goto tolua_lerror;
+	}
+
+	const cItemGrid * self = (const cItemGrid *)tolua_tousertype(L, 1, 0);
+	int SlotNum = (int)tolua_tonumber(L, 2, 0);
+	if (self == NULL)
+	{
+		tolua_error(L, "invalid 'self' in function 'cItemGrid:GetSlotCoords'", NULL);
+		return 0;
+	}
+	int X, Y;
+	self->GetSlotCoords(SlotNum, X, Y);
+	tolua_pushnumber(L, (lua_Number)X);
+	tolua_pushnumber(L, (lua_Number)Y);
+	return 2;
+	
+tolua_lerror:
+	tolua_error(L, "#ferror in function 'FindKey'.", &tolua_err);
+	return 0;
+}
+
+
+
+
+
 void ManualBindings::Bind( lua_State* tolua_S )
 {
 	tolua_beginmodule(tolua_S,NULL);
@@ -1158,6 +1196,10 @@ void ManualBindings::Bind( lua_State* tolua_S )
 			tolua_constant(tolua_S, "MAX_VIEW_DISTANCE", cClientHandle::MAX_VIEW_DISTANCE);
 		tolua_endmodule(tolua_S);
 
+		tolua_beginmodule(tolua_S, "cItemGrid");
+			tolua_function(tolua_S, "GetSlotCoords", Lua_ItemGrid_GetSlotCoords);
+		tolua_endmodule(tolua_S);
+
 		tolua_function(tolua_S, "md5", tolua_md5);
 
 	tolua_endmodule(tolua_S);
diff --git a/source/UI/SlotArea.cpp b/source/UI/SlotArea.cpp
index 881346c45..dd68f029d 100644
--- a/source/UI/SlotArea.cpp
+++ b/source/UI/SlotArea.cpp
@@ -224,7 +224,7 @@ cSlotAreaChest::cSlotAreaChest(cChestEntity * a_Chest, cWindow & a_ParentWindow)
 const cItem * cSlotAreaChest::GetSlot(int a_SlotNum, cPlayer & a_Player)
 {
 	// a_SlotNum ranges from 0 to 26, use that to index the chest entity's inventory directly:
-	return m_Chest->GetSlot(a_SlotNum);
+	return &(m_Chest->GetSlot(a_SlotNum));
 }
 
 
@@ -259,11 +259,11 @@ const cItem * cSlotAreaDoubleChest::GetSlot(int a_SlotNum, cPlayer & a_Player)
 	// a_SlotNum ranges from 0 to 53, use that to index the correct chest's inventory:
 	if (a_SlotNum < 27)
 	{
-		return m_TopChest->GetSlot(a_SlotNum);
+		return &(m_TopChest->GetSlot(a_SlotNum));
 	}
 	else
 	{
-		return m_BottomChest->GetSlot(a_SlotNum - 27);
+		return &(m_BottomChest->GetSlot(a_SlotNum - 27));
 	}
 }
 
diff --git a/source/WorldStorage/NBTChunkSerializer.cpp b/source/WorldStorage/NBTChunkSerializer.cpp
index 992fa7f69..e033bfb9b 100644
--- a/source/WorldStorage/NBTChunkSerializer.cpp
+++ b/source/WorldStorage/NBTChunkSerializer.cpp
@@ -11,7 +11,7 @@
 #include "../SignEntity.h"
 #include "../NoteEntity.h"
 #include "../JukeboxEntity.h"
-#include "../Item.h"
+#include "../ItemGrid.h"
 #include "../StringCompression.h"
 #include "../Entity.h"
 #include "../OSSupport/MakeDir.h"
@@ -74,6 +74,24 @@ void cNBTChunkSerializer::AddItem(const cItem & a_Item, int a_Slot, const AStrin
 
 
 
+void cNBTChunkSerializer::AddItemGrid(const cItemGrid & a_Grid, int a_BeginSlotNum)
+{
+	int NumSlots = a_Grid.GetNumSlots();
+	for (int i = 0; i < NumSlots; i++)
+	{
+		const cItem & Item = a_Grid.GetItem(i);
+		if (Item.IsEmpty())
+		{
+			continue;
+		}
+		AddItem(Item, i + a_BeginSlotNum);
+	}  // for i - chest slots[]
+}
+
+
+
+
+
 void cNBTChunkSerializer::AddBasicTileEntity(cBlockEntity * a_Entity, const char * a_EntityTypeID)
 {
 	m_Writer.AddInt   ("x",  a_Entity->GetPosX());
@@ -91,15 +109,7 @@ void cNBTChunkSerializer::AddChestEntity(cChestEntity * a_Entity)
 	m_Writer.BeginCompound("");
 		AddBasicTileEntity(a_Entity, "Chest");
 		m_Writer.BeginList("Items", TAG_Compound);
-			for (int i = 0; i < cChestEntity::c_ChestHeight * cChestEntity::c_ChestWidth; i++)
-			{
-				const cItem * Item = a_Entity->GetSlot(i);
-				if ((Item == NULL) || Item->IsEmpty())
-				{
-					continue;
-				}
-				AddItem(*Item, i);
-			}  // for i - chest slots[]
+			AddItemGrid(a_Entity->GetContents());
 		m_Writer.EndList();
 	m_Writer.EndCompound();
 }
diff --git a/source/WorldStorage/NBTChunkSerializer.h b/source/WorldStorage/NBTChunkSerializer.h
index 78847dbc0..5c59ca490 100644
--- a/source/WorldStorage/NBTChunkSerializer.h
+++ b/source/WorldStorage/NBTChunkSerializer.h
@@ -31,6 +31,8 @@ class cMinecartWithChest;
 class cMinecartWithFurnace;
 class cMonster;
 class cPickup;
+class cItemGrid;
+
 
 
 
@@ -71,6 +73,9 @@ protected:
 	/// Writes an item into the writer, if slot >= 0, adds the Slot tag. The compound is named as requested.
 	void AddItem(const cItem & a_Item, int a_Slot, const AString & a_CompoundName = "");
 	
+	/// Writes an item grid into the writer; begins the stored slot numbers with a_BeginSlotNum
+	void AddItemGrid(const cItemGrid & a_Grid, int a_BeginSlotNum = 0);
+	
 	// Block entities:
 	void AddBasicTileEntity(cBlockEntity * a_Entity, const char * a_EntityTypeID);
 	void AddChestEntity(cChestEntity * a_Entity);
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