Implements saving of loot (items / money) contained inside lootable inventory items.

* Unlooted items / money persist across player sessions
* Loot inside items is tied to the item rather than the player so if trading
  partially looted items becomes possible, this implementation will still work

* New tables added:

    characters_database.sql (first time users)
    characters_create_item_loot.sql (existing users)

Implementation Can be tested with:

 Watertight Trunk [21113]
 Bulging Sack of Gems [25422]
 Fat Sack of Coins [11937]

Closes #2048

2 files changed, 55 insertions, 2 deletions

diff --git a/src/server/game/Loot/LootMgr.cpp b/src/server/game/Loot/LootMgr.cpp
index ef3d2b9fbd6..098fcc657b3 100644
--- a/src/server/game/Loot/LootMgr.cpp
+++ b/src/server/game/Loot/LootMgr.cpp
@@ -334,6 +334,7 @@ LootItem::LootItem(LootStoreItem const& li)
     is_blocked = 0;
     is_underthreshold = 0;
     is_counted = 0;
+    canSave = true;
 }
 
 // Basic checks for player/item compatibility - if false no chance to see the item in the loot
@@ -654,6 +655,33 @@ void Loot::generateMoneyLoot(uint32 minAmount, uint32 maxAmount)
     }
 }
 
+void Loot::DeleteLootItemFromContainerItemDB(uint32 itemID)
+{
+    // Deletes a single item associated with an openable item from the DB
+    PreparedStatement* stmt = CharacterDatabase.GetPreparedStatement(CHAR_DEL_ITEMCONTAINER_ITEM);
+    stmt->setUInt32(0, containerID);
+    stmt->setUInt32(1, itemID);
+    CharacterDatabase.Execute(stmt);
+
+    // Mark the item looted to prevent resaving
+    for (LootItemList::iterator _itr = items.begin(); _itr != items.end(); _itr++)
+    {
+        if (!_itr->itemid == itemID)
+            continue;
+
+        _itr->canSave = true;
+        break;
+    }
+}
+
+void Loot::DeleteLootMoneyFromContainerItemDB()
+{
+    // Deletes money loot associated with an openable item from the DB
+    PreparedStatement* stmt = CharacterDatabase.GetPreparedStatement(CHAR_DEL_ITEMCONTAINER_MONEY);
+    stmt->setUInt32(0, containerID);
+    CharacterDatabase.Execute(stmt);
+}
+
 LootItem* Loot::LootItemInSlot(uint32 lootSlot, Player* player, QuestItem* *qitem, QuestItem* *ffaitem, QuestItem* *conditem)
 {
     LootItem* item = NULL;
@@ -1239,6 +1267,19 @@ void LootTemplate::CopyConditions(ConditionList conditions)
         i->CopyConditions(conditions);
 }
 
+void LootTemplate::CopyConditions(LootItem* li) const
+{
+    // Copies the conditions list from a template item to a LootItem
+    for (LootStoreItemList::const_iterator _iter = Entries.begin(); _iter != Entries.end(); ++_iter)
+    {
+        if (!_iter->itemid == li->itemid)
+            continue;
+
+        li->conditions = _iter->conditions;
+        break;
+    }
+}
+
 // Rolls for every item in the template and adds the rolled items the the loot
 void LootTemplate::Process(Loot& loot, bool rate, uint16 lootMode, uint8 groupId) const
 {
diff --git a/src/server/game/Loot/LootMgr.h b/src/server/game/Loot/LootMgr.h
index 45fc5c7983c..cfa5d370e3b 100644
--- a/src/server/game/Loot/LootMgr.h
+++ b/src/server/game/Loot/LootMgr.h
@@ -141,14 +141,17 @@ struct LootItem
     bool    is_counted        : 1;
     bool    needs_quest       : 1;                          // quest drop
     bool    follow_loot_rules : 1;
+    bool    canSave;
 
     // Constructor, copies most fields from LootStoreItem, generates random count and random suffixes/properties
     // Should be called for non-reference LootStoreItem entries only (mincountOrRef > 0)
     explicit LootItem(LootStoreItem const& li);
 
+    // Empty constructor for creating an empty LootItem to be filled in with DB data
+    LootItem() : canSave(true){};
+
     // Basic checks for player/item compatibility - if false no chance to see the item in the loot
     bool AllowedForPlayer(Player const* player) const;
-
     void AddAllowedLooter(Player const* player);
     const AllowedLooterSet & GetAllowedLooters() const { return allowedGUIDs; }
 };
@@ -223,6 +226,7 @@ class LootTemplate
         // Rolls for every item in the template and adds the rolled items the the loot
         void Process(Loot& loot, bool rate, uint16 lootMode, uint8 groupId = 0) const;
         void CopyConditions(ConditionList conditions);
+        void CopyConditions(LootItem* li) const;
 
         // True if template includes at least 1 quest drop entry
         bool HasQuestDrop(LootTemplateMap const& store, uint8 groupId = 0) const;
@@ -286,10 +290,18 @@ struct Loot
     uint8 unlootedCount;
     uint64 roundRobinPlayer;                                // GUID of the player having the Round-Robin ownership for the loot. If 0, round robin owner has released.
     LootType loot_type;                                     // required for achievement system
+    
+    // GUIDLow of container that holds this loot (item_instance.entry)
+    //  Only set for inventory items that can be right-click looted
+    uint32 containerID;
 
-    Loot(uint32 _gold = 0) : gold(_gold), unlootedCount(0), loot_type(LOOT_CORPSE) {}
+    Loot(uint32 _gold = 0) : gold(_gold), unlootedCount(0), loot_type(LOOT_CORPSE), containerID(0) {}
     ~Loot() { clear(); }
 
+    // For deleting items at loot removal since there is no backward interface to the Item()
+    void DeleteLootItemFromContainerItemDB(uint32 itemID);
+    void DeleteLootMoneyFromContainerItemDB();
+
     // if loot becomes invalid this reference is used to inform the listener
     void addLootValidatorRef(LootValidatorRef* pLootValidatorRef)
     {