Scripts/Oculus: Implement a couple of missing texts

(cherry picked from commit 63c1e265aace363a1d889b1621c0cc3a9263e956)

sql/updates/world/2014_12_26_04_world.sql

@@ -0,0 +1,4 @@
+UPDATE `creature_text` SET `TextRange` = 3 WHERE `entry` = 27656 AND `groupid` = 0;
+DELETE FROM `creature_text` WHERE `entry` = 27447 AND `groupid` = 4;
+INSERT INTO `creature_text` (`entry`, `groupid`, `id`, `text`, `type`, `language`, `probability`, `emote`, `duration`, `sound`, `BroadcastTextID`, `TextRange`, `comment`) VALUES
+(27447, 4, 0, 'Intruders, your victory will be short-lived. I am Commander Varos Cloudstrider. My drakes control the skies and protect this conduit. I will see to it personally that the Oculus does not fall into your hands!', 14, 0, 100, 0, 0, 13648, 31812, 3, 'Varos Cloudstrider SAY_VAROS_INTRO_TEXT');

src/server/scripts/Northrend/Nexus/Oculus/instance_oculus.cpp

@@ -192,6 +192,7 @@ class instance_oculus : public InstanceMapScript
                             FreeDragons();
                             if (Creature* varos = instance->GetCreature(VarosGUID))
                                 varos->SetPhaseMask(1, true);
+                            events.ScheduleEvent(EVENT_VAROS_INTRO, 15000);
                         }
                         break;
                     case DATA_VAROS:
@@ -209,6 +210,7 @@ class instance_oculus : public InstanceMapScript
                             {
                                 eregos->SetPhaseMask(1, true);
                                 GreaterWhelps();
+                                events.ScheduleEvent(EVENT_EREGOS_INTRO, 5000);
                             }
                         }
                         break;
@@ -267,6 +269,28 @@ class instance_oculus : public InstanceMapScript
                 }
             }
 
+            void Update(uint32 diff) override
+            {
+                events.Update(diff);
+
+                while (uint32 eventId = events.ExecuteEvent())
+                {
+                    switch (eventId)
+                    {
+                        case EVENT_VAROS_INTRO:
+                            if (Creature* varos = instance->GetCreature(VarosGUID))
+                                varos->AI()->Talk(SAY_VAROS_INTRO_TEXT);
+                            break;
+                        case EVENT_EREGOS_INTRO:
+                            if (Creature* eregos = instance->GetCreature(EregosGUID))
+                                eregos->AI()->Talk(SAY_EREGOS_INTRO_TEXT);
+                            break;
+                        default:
+                            break;
+                    }
+                }
+            }
+
             void GreaterWhelps()
             {
                 for (ObjectGuid guid : GreaterWhelpList)
@@ -289,6 +313,8 @@ class instance_oculus : public InstanceMapScript
             ObjectGuid EregosCacheGUID;
 
             GuidList GreaterWhelpList;
+
+            EventMap events;
         };
 
         InstanceScript* GetInstanceScript(InstanceMap* map) const override

src/server/scripts/Northrend/Nexus/Oculus/oculus.h

@@ -79,6 +79,18 @@ enum OculusSpells
     SPELL_DEATH_SPELL           = 50415
 };
 
+enum InstanceTexts
+{
+    SAY_EREGOS_INTRO_TEXT = 0,
+    SAY_VAROS_INTRO_TEXT  = 4
+};
+
+enum InstanceEvents
+{
+    EVENT_VAROS_INTRO = 1,
+    EVENT_EREGOS_INTRO
+};
+
 enum Misc
 {
     POINT_MOVE_OUT              = 1