Scripts/Karazhan: Implement Optional Boss Spawn

* closes #15756

sql/updates/world/2016_08_08_08_world.sql

@@ -0,0 +1,14 @@
+-- Karazhan Optional Boss spawn
+-- Hyakiss the Lurker SAI
+SET @ENTRY := 16179;
+UPDATE `creature_template` SET `AIName`="SmartAI" WHERE `entry`=@ENTRY;
+DELETE FROM `smart_scripts` WHERE `entryorguid`=@ENTRY AND `source_type`=0;
+INSERT INTO `smart_scripts` (`entryorguid`,`source_type`,`id`,`link`,`event_type`,`event_phase_mask`,`event_chance`,`event_flags`,`event_param1`,`event_param2`,`event_param3`,`event_param4`,`action_type`,`action_param1`,`action_param2`,`action_param3`,`action_param4`,`action_param5`,`action_param6`,`target_type`,`target_param1`,`target_param2`,`target_param3`,`target_x`,`target_y`,`target_z`,`target_o`,`comment`) VALUES
+(@ENTRY,0,0,0,0,0,100,0,5000,5000,35000,35000,11,29901,0,0,0,0,0,2,0,0,0,0,0,0,0,"Hyakiss the Lurker - In Combat - Cast 'Acidic Fang'");
+
+-- Rokad the Ravager SAI
+SET @ENTRY := 16181;
+UPDATE `creature_template` SET `AIName`="SmartAI" WHERE `entry`=@ENTRY;
+DELETE FROM `smart_scripts` WHERE `entryorguid`=@ENTRY AND `source_type`=0;
+INSERT INTO `smart_scripts` (`entryorguid`,`source_type`,`id`,`link`,`event_type`,`event_phase_mask`,`event_chance`,`event_flags`,`event_param1`,`event_param2`,`event_param3`,`event_param4`,`action_type`,`action_param1`,`action_param2`,`action_param3`,`action_param4`,`action_param5`,`action_param6`,`target_type`,`target_param1`,`target_param2`,`target_param3`,`target_x`,`target_y`,`target_z`,`target_o`,`comment`) VALUES
+(@ENTRY,0,0,0,0,0,100,0,2000,3000,12000,15000,11,29906,0,0,0,0,0,2,0,0,0,0,0,0,0,"Rokad the Ravager - In Combat - Cast 'Ravage'");

src/server/scripts/EasternKingdoms/Karazhan/instance_karazhan.cpp

@@ -44,6 +44,13 @@ EndScriptData */
 11 - Nightbane
 */
 
+const Position OptionalSpawn[] =
+{
+    { -10960.981445f, -1940.138428f, 46.178097f, 4.12f  }, // Hyakiss the Lurker
+    { -10899.903320f, -2085.573730f, 49.474449f, 1.38f  }, // Rokad the Ravager
+    { -10945.769531f, -2040.153320f, 49.474438f, 0.077f } // Shadikith the Glider
+};
+
 class instance_karazhan : public InstanceMapScript
 {
 public:
@@ -64,13 +71,15 @@ class instance_karazhan : public InstanceMapScript
             // 1 - OZ, 2 - HOOD, 3 - RAJ, this never gets altered.
             m_uiOperaEvent = urand(1, 3);
             m_uiOzDeathCount = 0;
+            OptionalBossCount = 0;
         }
 
         uint32 m_auiEncounter[MAX_ENCOUNTER];
         std::string strSaveData;
 
         uint32 m_uiOperaEvent;
         uint32 m_uiOzDeathCount;
+        uint32 OptionalBossCount;
 
         ObjectGuid m_uiCurtainGUID;
         ObjectGuid m_uiStageDoorLeftGUID;
@@ -107,6 +116,29 @@ class instance_karazhan : public InstanceMapScript
             }
         }
 
+        void OnUnitDeath(Unit* unit) override
+        {
+            Creature* creature = unit->ToCreature();
+            if (!creature)
+                return;
+
+            switch (creature->GetEntry())
+            {
+                case NPC_COLDMIST_WIDOW:
+                case NPC_COLDMIST_STALKER:
+                case NPC_SHADOWBAT:
+                case NPC_VAMPIRIC_SHADOWBAT:
+                case NPC_GREATER_SHADOWBAT:
+                case NPC_PHASE_HOUND:
+                case NPC_DREADBEAST:
+                case NPC_SHADOWBEAST:
+                    SetData(TYPE_OPTIONAL_BOSS, NOT_STARTED);
+                    break;
+                default:
+                    break;
+            }
+        }
+
         void SetData(uint32 type, uint32 uiData) override
         {
             switch (type)
@@ -118,7 +150,28 @@ class instance_karazhan : public InstanceMapScript
                     m_auiEncounter[1] = uiData;
                     break;
                 case TYPE_MAIDEN:               m_auiEncounter[2] = uiData; break;
-                case TYPE_OPTIONAL_BOSS:        m_auiEncounter[3] = uiData; break;
+                case TYPE_OPTIONAL_BOSS:
+                    m_auiEncounter[3] = uiData;
+                    if (uiData == NOT_STARTED)
+                    {
+                        ++OptionalBossCount;
+                        if (OptionalBossCount == 50)
+                        {
+                            switch (urand(0, 2))
+                            {
+                                case 0:
+                                    instance->SummonCreature(NPC_HYAKISS_THE_LURKER, OptionalSpawn[0]);
+                                    break;
+                                case 1:
+                                    instance->SummonCreature(NPC_ROKAD_THE_RAVAGER, OptionalSpawn[1]);
+                                    break;
+                                case 2:
+                                    instance->SummonCreature(NPC_SHADIKITH_THE_GLIDER, OptionalSpawn[2]);
+                                    break;
+                            }
+                        }
+                    }
+                    break;
                 case TYPE_OPERA:
                     m_auiEncounter[4] = uiData;
                     if (uiData == DONE)

src/server/scripts/EasternKingdoms/Karazhan/karazhan.h

@@ -64,4 +64,20 @@ enum OperaEvents
     EVENT_RAJ                       = 3
 };
 
+enum MiscCreatures
+{
+    NPC_HYAKISS_THE_LURKER          = 16179,
+    NPC_ROKAD_THE_RAVAGER           = 16181,
+    NPC_SHADIKITH_THE_GLIDER        = 16180,
+
+    // Trash
+    NPC_COLDMIST_WIDOW              = 16171,
+    NPC_COLDMIST_STALKER            = 16170,
+    NPC_SHADOWBAT                   = 16173,
+    NPC_VAMPIRIC_SHADOWBAT          = 16175,
+    NPC_GREATER_SHADOWBAT           = 16174,
+    NPC_PHASE_HOUND                 = 16178,
+    NPC_DREADBEAST                  = 16177,
+    NPC_SHADOWBEAST                 = 16176
+};
 #endif