Scripts/Anniversary: Implement Doomwalker encounter (#30591)

Co-authored-by: Shauren <shauren.trinity@gmail.com>

3 files changed, 255 insertions, 6 deletions

diff --git a/src/server/scripts/Events/Anniversary/boss_doomwalker_anniversary.cpp b/src/server/scripts/Events/Anniversary/boss_doomwalker_anniversary.cpp
new file mode 100644
index 00000000000..70a07fce9a1
--- /dev/null
+++ b/src/server/scripts/Events/Anniversary/boss_doomwalker_anniversary.cpp
@@ -0,0 +1,165 @@
+/*
+ * This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "MovementDefines.h"
+#include "ScriptMgr.h"
+#include "ScriptedCreature.h"
+
+enum DoomwalkerSpells
+{
+    SPELL_SUMMON_OVERRUN_TARGET       = 32632, // Serverside
+    SPELL_OVERRUN_TARGET_SPAWN        = 32634, // Serverside
+    SPELL_OVERRUN_TARGET_SPAWN_EFFECT = 32635, // Serverside
+    SPELL_OVERRUN                     = 32636,
+    SPELL_OVERRUN_DAMAGE              = 32637,
+    SPELL_LIGHTNING_WRATH             = 33665,
+    SPELL_FRENZY                      = 33653,
+    SPELL_CRUSH_ARMOR                 = 33661,
+    SPELL_EARTHQUAKE                  = 326405,
+    SPELL_KNOCKDOWN                   = 13360
+};
+
+enum DoomwalkerTexts
+{
+    SAY_AGGRO       = 0,
+    SAY_EARTHQUAKE  = 1,
+    SAY_OVERRUN     = 2,
+    SAY_KILL        = 3,
+    SAY_FRENZY      = 4,
+    SAY_DEATH       = 5
+};
+
+enum DoomwalkerEvents
+{
+    EVENT_OVERRUN         = 1,
+    EVENT_CRUSH_ARMOR,
+    EVENT_LIGHTNING_WRATH,
+    EVENT_EARTHQUAKE
+};
+
+enum DoomwalkerMisc
+{
+    POINT_OVERRUN         = 0,
+    NPC_OVERRUN_TARGET    = 18665
+};
+
+// 167749 - Doomwalker
+struct boss_doomwalker_anniversary : public WorldBossAI
+{
+    using WorldBossAI::WorldBossAI;
+
+    void JustDied(Unit* killer) override
+    {
+        WorldBossAI::JustDied(killer);
+        Talk(SAY_DEATH);
+    }
+
+    void KilledUnit(Unit* victim) override
+    {
+        if (victim->GetTypeId() == TYPEID_PLAYER)
+            Talk(SAY_KILL);
+    }
+
+    void JustEngagedWith(Unit* who) override
+    {
+        WorldBossAI::JustEngagedWith(who);
+        Talk(SAY_AGGRO);
+
+        events.ScheduleEvent(EVENT_OVERRUN, 15s, 40s);
+        events.ScheduleEvent(EVENT_EARTHQUAKE, 30s, 55s);
+        events.ScheduleEvent(EVENT_LIGHTNING_WRATH, 7s, 27s);
+        events.ScheduleEvent(EVENT_CRUSH_ARMOR, 10s, 25s);
+    }
+
+    void DamageTaken(Unit* /*attacker*/, uint32& damage, DamageEffectType /*damageType*/, SpellInfo const* /*spellInfo*/) override
+    {
+        if (me->HealthBelowPctDamaged(20, damage))
+        {
+            Talk(SAY_FRENZY);
+            DoCastSelf(SPELL_FRENZY);
+        }
+    }
+
+    void MovementInform(uint32 type, uint32 id) override
+    {
+        if (type == POINT_MOTION_TYPE && id == POINT_OVERRUN)
+        {
+            me->SetReactState(REACT_AGGRESSIVE);
+            me->RemoveAurasDueToSpell(SPELL_OVERRUN);
+
+            if (Creature* overrunTarget = me->FindNearestCreature(NPC_OVERRUN_TARGET, 50.0f))
+                overrunTarget->DespawnOrUnsummon();
+        }
+    }
+
+    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_OVERRUN:
+                {
+                    DoCastSelf(SPELL_SUMMON_OVERRUN_TARGET);
+                    me->SetReactState(REACT_PASSIVE);
+                    Talk(SAY_OVERRUN);
+                    DoCastSelf(SPELL_OVERRUN);
+                    events.ScheduleEvent(EVENT_OVERRUN, 25s, 40s);
+                    break;
+                }
+                case EVENT_EARTHQUAKE:
+                {
+                    Talk(SAY_EARTHQUAKE);
+                    DoCastSelf(SPELL_EARTHQUAKE);
+                    events.ScheduleEvent(EVENT_EARTHQUAKE, 30s, 55s);
+                    break;
+                }
+                case EVENT_LIGHTNING_WRATH:
+                {
+                    if (Unit* target = SelectTarget(SelectTargetMethod::Random, 0, 0.0f, true))
+                        DoCast(target, SPELL_LIGHTNING_WRATH);
+                    events.ScheduleEvent(EVENT_LIGHTNING_WRATH, 7s, 27s);
+                    break;
+                }
+                case EVENT_CRUSH_ARMOR:
+                {
+                    DoCastVictim(SPELL_CRUSH_ARMOR);
+                    events.ScheduleEvent(EVENT_CRUSH_ARMOR, 10s, 25s);
+                    break;
+                }
+                default:
+                    break;
+            }
+
+            if (me->HasUnitState(UNIT_STATE_CASTING))
+                return;
+        }
+    }
+};
+
+void AddSC_boss_doomwalker_anniversary()
+{
+    RegisterCreatureAI(boss_doomwalker_anniversary);
+}
diff --git a/src/server/scripts/Events/events_script_loader.cpp b/src/server/scripts/Events/events_script_loader.cpp
index 78311bfa6ce..149e816ecba 100644
--- a/src/server/scripts/Events/events_script_loader.cpp
+++ b/src/server/scripts/Events/events_script_loader.cpp
@@ -29,6 +29,9 @@ void AddSC_event_pilgrims_bounty();
 void AddSC_event_winter_veil();
 void AddSC_event_zalazane_fall();
 
+// Anniversary
+void AddSC_boss_doomwalker_anniversary();
+
 // The name of this function should match:
 // void Add${NameOfDirectory}Scripts()
 void AddEventsScripts()
@@ -45,4 +48,7 @@ void AddEventsScripts()
     AddSC_event_pilgrims_bounty();
     AddSC_event_winter_veil();
     AddSC_event_zalazane_fall();
+
+    // Anniversary
+    AddSC_boss_doomwalker_anniversary();
 }
diff --git a/src/server/scripts/Outland/boss_doomwalker.cpp b/src/server/scripts/Outland/boss_doomwalker.cpp
index 392bc3d5451..21b7c510c1b 100644
--- a/src/server/scripts/Outland/boss_doomwalker.cpp
+++ b/src/server/scripts/Outland/boss_doomwalker.cpp
@@ -15,8 +15,11 @@
  * with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include "MotionMaster.h"
 #include "ScriptMgr.h"
 #include "ScriptedCreature.h"
+#include "SpellInfo.h"
+#include "SpellScript.h"
 
 enum Texts
 {
@@ -32,10 +35,12 @@ enum Spells
     SPELL_EARTHQUAKE        = 32686,
     SPELL_SUNDER_ARMOR      = 33661,
     SPELL_CHAIN_LIGHTNING   = 33665,
+    SPELL_SUMMON_OVERRUN_TARGET = 32632, // Serverside
     SPELL_OVERRUN           = 32636,
     SPELL_ENRAGE            = 33653,
     SPELL_MARK_DEATH        = 37128,
-    SPELL_AURA_DEATH        = 37131
+    SPELL_AURA_DEATH        = 37131,
+    SPELL_KNOCKDOWN         = 13360
 };
 
 enum Events
@@ -47,6 +52,12 @@ enum Events
     EVENT_OVERRUN   = 5
 };
 
+enum DoomwalkerMisc
+{
+    POINT_OVERRUN         = 0,
+    NPC_OVERRUN_TARGET    = 18665
+};
+
 struct boss_doomwalker : public ScriptedAI
 {
     boss_doomwalker(Creature* creature) : ScriptedAI(creature)
@@ -91,11 +102,22 @@ struct boss_doomwalker : public ScriptedAI
     }
 
     void MoveInLineOfSight(Unit* who) override
-
     {
         if (who && who->GetTypeId() == TYPEID_PLAYER && me->IsValidAttackTarget(who))
             if (who->HasAura(SPELL_MARK_DEATH))
-                who->CastSpell(who, SPELL_AURA_DEATH, 1);
+                who->CastSpell(who, SPELL_AURA_DEATH, true);
+    }
+
+    void MovementInform(uint32 type, uint32 id) override
+    {
+        if (type == POINT_MOTION_TYPE && id == POINT_OVERRUN)
+        {
+            me->SetReactState(REACT_AGGRESSIVE);
+            me->RemoveAurasDueToSpell(SPELL_OVERRUN);
+
+            if (Creature* overrunTarget = me->FindNearestCreature(NPC_OVERRUN_TARGET, 500.0f))
+                overrunTarget->DespawnOrUnsummon();
+        }
     }
 
     void UpdateAI(uint32 diff) override
@@ -121,14 +143,13 @@ struct boss_doomwalker : public ScriptedAI
                     }
                     break;
                 case EVENT_OVERRUN:
+                    DoCastSelf(SPELL_SUMMON_OVERRUN_TARGET);
+                    me->SetReactState(REACT_PASSIVE);
                     Talk(SAY_OVERRUN);
                     DoCastVictim(SPELL_OVERRUN);
                     _events.ScheduleEvent(EVENT_OVERRUN, 25s, 40s);
                     break;
                 case EVENT_QUAKE:
-                    if (urand(0, 1))
-                        return;
-
                     Talk(SAY_EARTHQUAKE);
 
                     //remove enrage before casting earthquake because enrage + earthquake = 16000dmg over 8sec and all dead
@@ -158,7 +179,64 @@ struct boss_doomwalker : public ScriptedAI
         bool _inEnrage;
 };
 
+// 32686 - Earthquake
+// 326405 - Earthquake
+class spell_doomwalker_earthquake : public AuraScript
+{
+    bool Validate(SpellInfo const* /*spellInfo*/) override
+    {
+        return ValidateSpellInfo({ SPELL_KNOCKDOWN });
+    }
+
+    void HandleKnockdown(AuraEffect const* /*aurEff*/) const
+    {
+        if (roll_chance_i(50))
+            GetTarget()->CastSpell(GetTarget(), SPELL_KNOCKDOWN, true);
+    }
+
+    void Register() override
+    {
+        OnEffectPeriodic += AuraEffectPeriodicFn(spell_doomwalker_earthquake::HandleKnockdown, EFFECT_1, SPELL_AURA_PERIODIC_TRIGGER_SPELL);
+    }
+};
+
+// 32636 - Overrun
+class spell_doomwalker_overrun : public SpellScript
+{
+    void StartMovement() const
+    {
+        if (Creature* overrunTarget = GetCaster()->FindNearestCreature(NPC_OVERRUN_TARGET, 500.0f))
+            GetCaster()->GetMotionMaster()->MovePoint(0, overrunTarget->GetPosition(), true, {}, {}, MovementWalkRunSpeedSelectionMode::ForceRun);
+    }
+
+    void Register() override
+    {
+        AfterCast += SpellCastFn(spell_doomwalker_overrun::StartMovement);
+    }
+};
+
+// 32637 - Overrun
+class spell_doomwalker_overrun_damage : public SpellScript
+{
+    void StartNextCast(SpellEffIndex /*effIndex*/) const
+    {
+        if (GetCaster()->HasAura(SPELL_OVERRUN))
+            GetCaster()->CastSpell(nullptr, GetSpellInfo()->Id, CastSpellExtraArgsInit{
+                .TriggerFlags = TRIGGERED_IGNORE_CAST_IN_PROGRESS | TRIGGERED_IGNORE_SET_FACING,
+                .TriggeringSpell = GetSpell()
+            });
+    }
+
+    void Register() override
+    {
+        OnEffectHitTarget += SpellEffectFn(spell_doomwalker_overrun_damage::StartNextCast, EFFECT_2, SPELL_EFFECT_SCRIPT_EFFECT);
+    }
+};
+
 void AddSC_boss_doomwalker()
 {
     RegisterCreatureAI(boss_doomwalker);
+    RegisterSpellScript(spell_doomwalker_earthquake);
+    RegisterSpellScript(spell_doomwalker_overrun);
+    RegisterSpellScript(spell_doomwalker_overrun_damage);
 }