Add support to set RandomProperty / RandomSuffix to -1 in item_template

--HG--
branch : trunk

src/game/Item.cpp

@@ -554,7 +554,7 @@ int32 Item::GenerateItemRandomPropertyId(uint32 item_id)
     // RandomProperty case
     if (itemProto->RandomProperty)
     {
-        int32 randomPropId = GetItemEnchantMod(itemProto->RandomProperty);
+        uint32 randomPropId = GetItemEnchantMod(itemProto->RandomProperty);
         ItemRandomPropertiesEntry const *random_id = sItemRandomPropertiesStore.LookupEntry(randomPropId);
         if (!random_id)
         {

src/game/ItemEnchantmentMgr.cpp

@@ -86,11 +86,22 @@ void LoadRandomEnchantmentsTable()
     }
 }
 
-uint32 GetItemEnchantMod(uint32 entry)
+uint32 GetItemEnchantMod(int32 entry)
 {
-    if (!entry) return 0;
+    if (!entry)
+        return 0;
 
-    EnchantmentStore::const_iterator tab = RandomItemEnch.find(entry);
+    EnchantmentStore::const_iterator tab;
+
+    if (entry == -1)
+    {
+        tab = RandomItemEnch.begin();
+        entry = urand(1, RandomItemEnch.size()) - 1;
+        for (uint32 i = 0; i < entry; ++i)
+            ++tab;
+    }
+    else
+        tab = RandomItemEnch.find(entry);
 
     if (tab == RandomItemEnch.end())
     {

src/game/ItemEnchantmentMgr.h

@@ -24,7 +24,7 @@
 #include "Common.h"
 
 void LoadRandomEnchantmentsTable();
-uint32 GetItemEnchantMod(uint32 entry);
+uint32 GetItemEnchantMod(int32 entry);
 uint32 GenerateEnchSuffixFactor(uint32 item_id);
 #endif
 

src/game/ItemPrototype.h

@@ -570,7 +570,7 @@ struct ItemPrototype
     int32  Material;                                        // id from Material.dbc
     uint32 Sheath;
     int32  RandomProperty;                                  // id from ItemRandomProperties.dbc
-    uint32 RandomSuffix;                                    // id from ItemRandomSuffix.dbc
+    int32  RandomSuffix;                                    // id from ItemRandomSuffix.dbc
     uint32 Block;
     uint32 ItemSet;                                         // id from ItemSet.dbc
     uint32 MaxDurability;