fix(Scripts/DireMaul): Rewrite Isalien fight (#9377)

data/sql/updates/pending_db_world/rev_1637968467142598700.sql

@@ -0,0 +1,9 @@
+INSERT INTO `version_db_world` (`sql_rev`) VALUES ('1637968467142598700');
+
+DELETE FROM `creature_text` WHERE `CreatureID` = 16097;
+INSERT INTO `creature_text` (`CreatureID`, `GroupID`, `ID`, `Text`, `Type`, `Language`, `Probability`, `Emote`, `Duration`, `Sound`, `BroadcastTextId`, `TextRange`, `comment`) VALUES
+(16097, 0, 0, 'My torture is ended and now I can join the Goddess. Thank you so very much!', 14, 0, 100, 0, 0, 0, 11860, 0, 'Isalien - ON DEATH');
+
+UPDATE `creature_template` SET `AIName` = '', `ScriptName` = 'boss_isalien' WHERE `entry` = 16097;
+
+DELETE FROM `smart_scripts` WHERE `entryorguid` = 16097 AND `source_type` = 0;

src/server/scripts/Kalimdor/DireMaul/boss_isalien.cpp

@@ -0,0 +1,141 @@
+/*
+ * This file is part of the AzerothCore 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 Affero General Public License as published by the
+ * Free Software Foundation; either version 3 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 Affero 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 "ScriptMgr.h"
+#include "ScriptedCreature.h"
+#include "dire_maul.h"
+#include "TaskScheduler.h"
+
+enum Texts
+{
+    SAY_DEATH = 0
+};
+
+enum Spells
+{
+    SPELL_CALL_EMPYREAN = 27639,
+    SPELL_MULTI_SHOT    = 14443,
+    SPELL_NET           = 12024,
+    SPELL_STARSHARDS    = 27636,
+    SPELL_REGROWTH      = 27637
+};
+
+enum Phases
+{
+    PHASE_NONE = 0,
+    PHASE_REGROWTH
+};
+
+enum Points
+{
+    POINT_RANDOM = 1
+};
+
+struct boss_isalien : public BossAI
+{
+    boss_isalien(Creature* creature) : BossAI(creature, DATA_ISALIEN) { }
+
+    void Reset() override
+    {
+        _Reset();
+        _scheduler.CancelAll();
+        summons.DespawnAll();
+        _phase = PHASE_NONE;
+
+        _scheduler.SetValidator([this]
+            {
+                return !me->HasUnitState(UNIT_STATE_CASTING);
+            });
+    }
+
+    void DamageTaken(Unit* /*attacker*/, uint32& /*damage*/, DamageEffectType /*type*/, SpellSchoolMask /*school*/) override
+    {
+        if (_phase != PHASE_REGROWTH && me->HealthBelowPct(80.f))
+        {
+            _phase = PHASE_REGROWTH;
+            _scheduler.Schedule(25s, 30s, [this](TaskContext context)
+                {
+                    Position randomPos = me->GetRandomPoint(me->GetPosition(), 15.f);
+                    me->GetMotionMaster()->MovePoint(POINT_RANDOM, randomPos);
+                    context.Schedule(3s, [this](TaskContext /*context*/)
+                        {
+                            me->GetMotionMaster()->Clear();
+                            me->GetMotionMaster()->MoveChase(me->GetVictim());
+                            DoCastSelf(SPELL_REGROWTH);
+                        });
+                    context.Repeat(25s, 30s);
+                });
+        }
+    }
+
+    void JustSummoned(Creature* summon) override
+    {
+        summons.Summon(summon);
+    }
+
+    void EnterCombat(Unit* /*who*/) override
+    {
+        _EnterCombat();
+        _scheduler.Schedule(4s, 5s, [this](TaskContext context)
+            {
+                DoCastRandomTarget(SPELL_NET);
+                context.Repeat(12s, 15s);
+            })
+        .Schedule(7s, 12s, [this](TaskContext context)
+            {
+                DoCastRandomTarget(SPELL_MULTI_SHOT);
+                context.Repeat(7s, 12s);
+            })
+        .Schedule(20s, 30s, [this](TaskContext context)
+            {
+                DoCastAOE(SPELL_STARSHARDS);
+                context.Repeat(20s, 30s);
+            })
+        .Schedule(8s, 10s, [this](TaskContext /*context*/)
+            {
+                DoCastAOE(SPELL_CALL_EMPYREAN);
+            });
+    }
+
+    void UpdateAI(uint32 diff) override
+    {
+        if (!UpdateVictim())
+        {
+            return;
+        }
+
+        _scheduler.Update(diff, [this]
+            {
+                DoMeleeAttackIfReady();
+            });
+    }
+
+    void JustDied(Unit* /*killer*/) override
+    {
+        _JustDied();
+        Talk(SAY_DEATH);
+    }
+
+protected:
+    TaskScheduler _scheduler;
+    uint8 _phase;
+};
+
+void AddSC_boss_isalien()
+{
+    RegisterDireMaulCreatureAI(boss_isalien);
+}

src/server/scripts/Kalimdor/DireMaul/dire_maul.h

@@ -18,7 +18,9 @@
 #ifndef DEF_DIRE_MAUL_H
 #define DEF_DIRE_MAUL_H
 
-#include "UnitAI.h"
+#include "CreatureAIImpl.h"
+
+constexpr auto DMScriptName = "instance_dire_maul";
 
 enum DataTypes
 {
@@ -27,6 +29,7 @@ enum DataTypes
     TYPE_PYLONS_STATE               = 2,
     TYPE_NORTH_WING_PROGRESS        = 3,
     TYPE_NORTH_WING_BOSSES          = 4,
+    DATA_ISALIEN                    = 32,
 
     ALL_PYLONS_OFF                  = 0x1F
 };
@@ -43,4 +46,12 @@ enum NpcIds
     NPC_HIGHBORNE_SUMMONER          = 11466
 };
 
+template <class AI, class T>
+inline AI* GetDireMaulAI(T* obj)
+{
+    return GetInstanceAI<AI>(obj, DMScriptName);
+}
+
+#define RegisterDireMaulCreatureAI(ai_name) RegisterCreatureAIWithFactory(ai_name, GetDireMaulAI)
+
 #endif

src/server/scripts/Kalimdor/DireMaul/instance_dire_maul.cpp

@@ -22,7 +22,7 @@
 class instance_dire_maul : public InstanceMapScript
 {
 public:
-    instance_dire_maul() : InstanceMapScript("instance_dire_maul", 429) { }
+    instance_dire_maul() : InstanceMapScript(DMScriptName, 429) { }
 
     struct instance_dire_maul_InstanceMapScript : public InstanceScript
     {

src/server/scripts/Kalimdor/kalimdor_script_loader.cpp

@@ -42,6 +42,7 @@ void AddSC_boss_mal_ganis();
 void AddSC_boss_meathook();
 void AddSC_culling_of_stratholme();
 void AddSC_instance_culling_of_stratholme();
+void AddSC_boss_isalien();
 void AddSC_instance_dire_maul();             //Dire Maul
 void AddSC_instance_maraudon();              //Maraudon
 void AddSC_boss_onyxia();                    //Onyxia's Lair
@@ -123,6 +124,7 @@ void AddKalimdorScripts()
     AddSC_boss_meathook();
     AddSC_culling_of_stratholme();
     AddSC_instance_culling_of_stratholme();
+    AddSC_boss_isalien();
     AddSC_instance_dire_maul();             //Dire Maul
     AddSC_instance_maraudon();              //Maraudon
     AddSC_boss_onyxia();                    //Onyxia's Lair