Scripts/BWD: scripted Drakonoid Chainwielder and Drakonoid Drudge trash npcs and scripted Magmaw's emote visual while chained

src/server/scripts/EasternKingdoms/BlackrockMountain/BlackwingDescent/blackwing_descent.cpp

@@ -180,6 +180,91 @@ private:
     uint8 _talkTextId;
 };
 
+enum DrakonidChainWielder
+{
+    // Events
+    EVENT_OVERHEAD_SMASH = 1,
+    EVENT_GRIEVOUS_WOUND,
+    EVENT_CONSTRICTING_CHAINS,
+
+    // Spells
+    SPELL_OVERHEAD_SMASH_SUMMON = 79578, // Serverside spell
+    SPELL_OVERHEAD_SMASH        = 79580,
+    SPELL_GRIEVOUS_WOUND        = 80051,
+    SPELL_CONSTRICTING_CHAINS   = 79589,
+};
+
+struct npc_bwd_drakonid_chainwielder : public ScriptedAI
+{
+    npc_bwd_drakonid_chainwielder(Creature* creature) : ScriptedAI(creature) { }
+
+    void JustEngagedWith(Unit* /*who*/) override
+    {
+        _events.ScheduleEvent(EVENT_GRIEVOUS_WOUND, 9s);
+        _events.ScheduleEvent(EVENT_OVERHEAD_SMASH, 12s);
+        _events.ScheduleEvent(EVENT_CONSTRICTING_CHAINS, 42s);
+    }
+
+    void EnterEvadeMode(EvadeReason why) override
+    {
+        ScriptedAI::EnterEvadeMode(why);
+        _events.Reset();
+    }
+
+    void JustSummoned(Creature* summon) override
+    {
+        if (summon->GetEntry() == NPC_OVERHEAD_SMASH)
+        {
+            me->SetFacingToObject(summon);
+            DoCast(summon, SPELL_OVERHEAD_SMASH);
+        }
+    }
+
+    void JustDied(Unit* killer) override
+    {
+        ScriptedAI::JustDied(killer);
+        _events.Reset();
+    }
+
+    void UpdateAI(uint32 diff) override
+    {
+        if (!UpdateVictim())
+            return;
+
+        _events.Update(diff);
+
+        if (me->HasUnitState(UNIT_STATE_CASTING))
+            return;
+
+        while (uint32 eventId = _events.ExecuteEvent())
+        {
+            switch (eventId)
+            {
+                case EVENT_OVERHEAD_SMASH:
+                    if (Unit* target = SelectTarget(SELECT_TARGET_RANDOM, 0, 60.f, true))
+                        DoCast(target, SPELL_OVERHEAD_SMASH_SUMMON);
+                    _events.Repeat(27s, 36s);
+                    break;
+                case EVENT_GRIEVOUS_WOUND:
+                    DoCastVictim(SPELL_GRIEVOUS_WOUND);
+                    _events.Repeat(22s, 25s);
+                    break;
+                case EVENT_CONSTRICTING_CHAINS:
+                    DoCastAOE(SPELL_CONSTRICTING_CHAINS);
+                    _events.Repeat(7s, 11s);
+                    break;
+                default:
+                    break;
+            }
+        }
+
+        DoMeleeAttackIfReady();
+    }
+
+private:
+    EventMap _events;
+};
+
 struct go_bwd_ancient_bell : public GameObjectAI
 {
     go_bwd_ancient_bell(GameObject* go) : GameObjectAI(go), _instance(go->GetInstanceScript()) { }
@@ -237,6 +322,25 @@ class spell_bwd_dragon_orb : public SpellScript
     }
 };
 
+class spell_bwd_grievous_wound : public AuraScript
+{
+    PrepareAuraScript(spell_bwd_grievous_wound);
+
+    void OnPeriodic(AuraEffect const* /*aurEff*/)
+    {
+        if (GetUnitOwner()->HealthAbovePct(90))
+        {
+            PreventDefaultAction();
+            Remove(AuraRemoveFlags::ByEnemySpell);
+        }
+    }
+
+    void Register() override
+    {
+        OnEffectPeriodic += AuraEffectPeriodicFn(spell_bwd_grievous_wound::OnPeriodic, EFFECT_0, SPELL_AURA_PERIODIC_DAMAGE);
+    }
+};
+
 class at_bwd_intro: public OnlyOnceAreaTriggerScript
 {
     public:
@@ -253,7 +357,9 @@ class at_bwd_intro: public OnlyOnceAreaTriggerScript
 void AddSC_blackwing_descent()
 {
     RegisterBlackwingDescentCreatureAI(npc_bwd_lord_victor_nefarius);
+    RegisterBlackwingDescentCreatureAI(npc_bwd_drakonid_chainwielder);
     RegisterGameObjectAI(go_bwd_ancient_bell);
     RegisterSpellScript(spell_bwd_dragon_orb);
+    RegisterAuraScript(spell_bwd_grievous_wound);
     new at_bwd_intro();
 }

src/server/scripts/EasternKingdoms/BlackrockMountain/BlackwingDescent/blackwing_descent.h

@@ -161,7 +161,11 @@ enum BWDCreatureIds
     NPC_SPIRIT_OF_THAURISSAN                = 43126,
     NPC_SPIRIT_OF_BURNINGEYE                = 43130,
     NPC_COLUMN_OF_LIGHT                     = 51506,
-    NPC_LORD_VICTOR_NEFARIUS_GENERIC        = 48964
+    NPC_LORD_VICTOR_NEFARIUS_GENERIC        = 48964,
+
+    // Generic Creatures
+    NPC_DRAKONID_DRUDGE                     = 42362,
+    NPC_OVERHEAD_SMASH                      = 42690
 };
 
 enum BWDGameObjectIds

src/server/scripts/EasternKingdoms/BlackrockMountain/BlackwingDescent/boss_magmaw.cpp

@@ -48,6 +48,8 @@ enum Spells
     SPELL_MASSIVE_CRASH                         = 88253,
     SPELL_IMPALE_SELF                           = 77907,
     SPELL_EJECT_PASSENGER_3                     = 95204,
+    SPELL_EMOTE_MAGMA_LAVA_SPLASH               = 79461,
+    SPELL_EMOTE_SPELLCASTDIRECTED               = 20718,
 
     // Exposed Head of Magmaw
     SPELL_POINT_OF_VULNERABILITY_SHARE_DAMAGE   = 79010,
@@ -1232,6 +1234,30 @@ class spell_magmaw_impale_self : public AuraScript
     }
 };
 
+class spell_magmaw_captured : public AuraScript
+{
+    PrepareAuraScript(spell_magmaw_captured);
+
+    bool Validate(SpellInfo const* /*spell*/) override
+    {
+        return ValidateSpellInfo(
+            {
+                SPELL_EMOTE_MAGMA_LAVA_SPLASH,
+                SPELL_EMOTE_SPELLCASTDIRECTED
+            });
+    }
+
+    void HandleTick(AuraEffect const* /*aurEff*/)
+    {
+        GetTarget()->CastSpell(GetTarget(), RAND(SPELL_EMOTE_MAGMA_LAVA_SPLASH, SPELL_EMOTE_SPELLCASTDIRECTED), true);
+    }
+
+    void Register() override
+    {
+        OnEffectPeriodic += AuraEffectPeriodicFn(spell_magmaw_captured::HandleTick, EFFECT_0, SPELL_AURA_PERIODIC_DUMMY);
+    }
+};
+
 class achievement_parasite_evening : public AchievementCriteriaScript
 {
     public:
@@ -1268,5 +1294,6 @@ void AddSC_boss_magmaw()
     RegisterSpellScript(spell_magmaw_shadow_breath_targeting);
     RegisterAuraScript(spell_magmaw_massive_crash);
     RegisterAuraScript(spell_magmaw_impale_self);
+    RegisterAuraScript(spell_magmaw_captured);
     new achievement_parasite_evening();
 }

src/server/scripts/EasternKingdoms/BlackrockMountain/BlackwingDescent/instance_blackwing_descent.cpp

@@ -106,6 +106,11 @@ enum SummonGroups
     SUMMON_GROUP_ATRAMEDES_INTRO = 0
 };
 
+enum Spells
+{
+    SPELL_EMOTE_MAGMA_LAVA_SPLASH = 79461
+};
+
 class instance_blackwing_descent : public InstanceMapScript
 {
     public:
@@ -186,6 +191,9 @@ class instance_blackwing_descent : public InstanceMapScript
                         if (Creature* nefarian = GetCreature(DATA_NEFARIANS_END))
                             nefarian->AI()->JustSummoned(creature);
                         break;
+                    case NPC_DRAKONID_DRUDGE:
+                        creature->ApplySpellImmune(SPELL_EMOTE_MAGMA_LAVA_SPLASH, IMMUNITY_ID, SPELL_EMOTE_MAGMA_LAVA_SPLASH, true);
+                        break;
                     default:
                         break;
                 }