Entirely new version of pull request #3962

Changes to be committed:
	modified:   builtin/game/register.lua
	modified:   src/content_nodemeta.cpp
	modified:   src/content_nodemeta.h
	modified:   src/game.cpp
	modified:   src/inventory.cpp
	modified:   src/inventory.h
	modified:   src/inventorymanager.cpp
	modified:   src/inventorymanager.h
	modified:   src/mapblock.cpp
	modified:   src/network/clientpackethandler.cpp
	modified:   src/nodemetadata.cpp
	modified:   src/nodemetadata.h
	modified:   src/player.cpp
	modified:   src/player.h
	modified:   src/rollback_interface.cpp
	modified:   src/script/common/c_content.cpp
	modified:   src/script/cpp_api/s_inventory.cpp
	modified:   src/script/cpp_api/s_inventory.h
	modified:   src/script/cpp_api/s_nodemeta.cpp
	modified:   src/script/cpp_api/s_nodemeta.h
	modified:   src/script/cpp_api/s_player.cpp
	modified:   src/script/cpp_api/s_player.h
	modified:   src/script/lua_api/l_inventory.cpp
	modified:   src/script/lua_api/l_nodemeta.cpp
	modified:   src/server.cpp
	modified:   src/serverobject.cpp
	modified:   src/unittest/test_inventory.cpp

src/script/cpp_api/s_player.h

@@ -23,6 +23,9 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "cpp_api/s_base.h"
 #include "irr_v3d.h"
 #include "util/string.h"
+#include "inventory.h" // For InventoryList and ItemStack
+
+class Player;
 
 struct ToolCapabilities;
 
@@ -46,6 +49,24 @@ public:
 	s16 on_player_hpchange(ServerActiveObject *player, s16 hp_change);
 	void on_playerReceiveFields(ServerActiveObject *player,
 		const std::string &formname, const StringMap &fields);
+	void on_player_inventory_remove_item(
+		ServerActiveObject *player_sao, 
+		Player *player,
+		const std::string &inventory_list_name,
+		const ItemStack &deleted_item);
+	void on_player_inventory_change_item(
+		ServerActiveObject *player_sao, 
+		Player *player,
+		const std::string &inventory_list_name,
+		u32 query_slot, 
+		const ItemStack &old_item,
+		const ItemStack &new_item);
+	void on_player_inventory_add_item(
+		ServerActiveObject *player_sao, 
+		Player *player,
+		const std::string &inventory_list_name,
+		u32 query_slot, 
+		const ItemStack &added_item);
 };