*hopefuly fix Thrall reset bug

--HG--
branch : trunk

src/bindings/scripts/scripts/zone/caverns_of_time/old_hillsbrad/old_hillsbrad.cpp

@@ -211,6 +211,7 @@ struct TRINITY_DLL_DECL npc_thrall_old_hillsbradAI : public npc_escortAI
     npc_thrall_old_hillsbradAI(Creature *c) : npc_escortAI(c)
     {
         pInstance = ((ScriptedInstance*)c->GetInstanceData());
+        m_creature->setActive(true);
     }
 
     ScriptedInstance *pInstance;
@@ -357,7 +358,9 @@ struct TRINITY_DLL_DECL npc_thrall_old_hillsbradAI : public npc_escortAI
                 //trigger epoch Yell("Thrall! Come outside and face your fate! ....")
                 //from here, thrall should not never be allowed to move to point 106 which he currently does.
                 break;
+
             case 106:
+                {
                     if (!PlayerGUID)
                         break;
 
@@ -382,6 +385,11 @@ struct TRINITY_DLL_DECL npc_thrall_old_hillsbradAI : public npc_escortAI
 
                     //alot will happen here, thrall and taretha talk, erozion appear at spot to explain
                     m_creature->SummonCreature(EROZION_ENTRY,2646.47,680.416,55.38,4.16,TEMPSUMMON_TIMED_DESPAWN,120000);
+                }
+                break;        
+            case 108:
+                //last waypoint, just set Thrall invisible, respawn is turned off   
+                m_creature->SetVisibility(VISIBILITY_OFF);
                 break;    
         }
     }
@@ -711,6 +719,9 @@ bool GossipSelect_npc_thrall_old_hillsbrad(Player *player, Creature *_Creature,
             DoScriptText(SAY_TH_START_EVENT_PART1, _Creature);
 
             ((npc_escortAI*)(_Creature->AI()))->Start(true, true, true, player->GetGUID());
+            ((npc_escortAI*)(_Creature->AI()))->SetMaxPlayerDistance(100.0f);//not really needed, because it will not despawn if player is too far
+            ((npc_escortAI*)(_Creature->AI()))->SetDespawnAtEnd(false);
+            ((npc_escortAI*)(_Creature->AI()))->SetDespawnAtFar(false);
             break;
 
         case GOSSIP_ACTION_INFO_DEF+2: