pet_dk.cpp

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/*
 * 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/>.
 */
 
/*
 * Ordered alphabetically using scriptname.
 * Scriptnames of files in this file should be prefixed with "npc_pet_dk_".
 */
 
#include "ScriptMgr.h"
#include "CellImpl.h"
#include "CombatAI.h"
#include "GridNotifiersImpl.h"
#include "MotionMaster.h"
 
enum DeathKnightSpells
{
 SPELL_DK_SUMMON_GARGOYLE_1 = 49206,
 SPELL_DK_SUMMON_GARGOYLE_2 = 50514,
 SPELL_DK_DISMISS_GARGOYLE = 50515,
 SPELL_DK_SANCTUARY = 54661
};
 
struct npc_pet_dk_ebon_gargoyle : CasterAI
{
 npc_pet_dk_ebon_gargoyle(Creature* creature) : CasterAI(creature) { }
 
 void InitializeAI() override
 {
 CasterAI::InitializeAI();
 ObjectGuid ownerGuid = me->GetOwnerGUID();
 if (!ownerGuid)
 return;
 
 // Find victim of Summon Gargoyle spell
 std::list<Unit*> targets;
 Trinity::AnyUnfriendlyUnitInObjectRangeCheck u_check(me, me, 30.0f);
 Trinity::UnitListSearcher<Trinity::AnyUnfriendlyUnitInObjectRangeCheck> searcher(me, targets, u_check);
 Cell::VisitAllObjects(me, searcher, 30.0f);
 for (Unit* target : targets)
 {
 if (target->HasAura(SPELL_DK_SUMMON_GARGOYLE_1, ownerGuid))
 {
 me->Attack(target, false);
 break;
 }
 }
 }
 
 void JustDied(Unit* /*killer*/) override
 {
 // Stop Feeding Gargoyle when it dies
 if (Unit* owner = me->GetOwner())
 owner->RemoveAurasDueToSpell(SPELL_DK_SUMMON_GARGOYLE_2);
 }
 
 // Fly away when dismissed
 void SpellHit(WorldObject* caster, SpellInfo const* spellInfo) override
 {
 if (spellInfo->Id != SPELL_DK_DISMISS_GARGOYLE || !me->IsAlive())
 return;
 
 Unit* owner = me->GetOwner();
 if (!owner || owner != caster)
 return;
 
 // Stop Fighting
 me->SetUnitFlag(UNIT_FLAG_NON_ATTACKABLE);
 
 // Sanctuary
 me->CastSpell(me, SPELL_DK_SANCTUARY, true);
 me->SetReactState(REACT_PASSIVE);
 
 // Fly Away
 me->SetCanFly(true);
 me->SetSpeedRate(MOVE_FLIGHT, 0.75f);
 me->SetSpeedRate(MOVE_RUN, 0.75f);
 float x = me->GetPositionX() + 20 * std::cos(me->GetOrientation());
 float y = me->GetPositionY() + 20 * std::sin(me->GetOrientation());
 float z = me->GetPositionZ() + 40;
 me->GetMotionMaster()->Clear();
 me->GetMotionMaster()->MovePoint(0, x, y, z);
 
 // Despawn as soon as possible
 me->DespawnOrUnsummon(Seconds(4));
 }
};
 
struct npc_pet_dk_guardian : public AggressorAI
{
 npc_pet_dk_guardian(Creature* creature) : AggressorAI(creature) { }
 
 bool CanAIAttack(Unit const* target) const override
 {
 if (!target)
 return false;
 Unit* owner = me->GetOwner();
 if (owner && !target->IsInCombatWith(owner))
 return false;
 return AggressorAI::CanAIAttack(target);
 }
};
 
void AddSC_deathknight_pet_scripts()
{
 RegisterCreatureAI(npc_pet_dk_ebon_gargoyle);
 RegisterCreatureAI(npc_pet_dk_guardian);
}