Scripts/Westfall: fixed quest "It's alive!"

sql/updates/world/custom/custom_2020_01_30_02_world.sql

@@ -0,0 +1,21 @@
+UPDATE `creature_template` SET `VehicleId`= 907, `spell1`= 79425, `spell2`= 79430, `ScriptName`= 'npc_westfall_overloaded_harvest_golem' WHERE `entry`= 42601;
+
+DELETE FROM `npc_spellclick_spells` WHERE `npc_entry`= 42601;
+INSERT INTO `npc_spellclick_spells` (`npc_entry`, `spell_id`, `cast_flags`, `user_type`) VALUES
+(42601, 46598, 1, 0);
+
+DELETE FROM `conditions` WHERE `SourceEntry`= 79436 AND `SourceTypeOrReferenceId`= 13;
+INSERT INTO `conditions` (`SourceTypeOrReferenceId`, `SourceGroup`, `SourceEntry`, `SourceId`, `ElseGroup`, `ConditionTypeOrReference`, `ConditionTarget`, `ConditionValue1`, `ConditionValue2`, `ConditionValue3`, `NegativeCondition`, `ErrorType`, `ScriptName`, `Comment`) VALUES
+(13, 2, 79436, 0, 0, 31, 0, 3, 42381, 0, 0, 0, '', 'Wake Harvest Golem - Target Overloaded Harvest Golem');
+
+DELETE FROM `spell_script_names` WHERE `ScriptName` IN
+('spell_westfall_reaping_blows',
+'spell_westfall_wake_harvest_golem');
+
+INSERT INTO `spell_script_names` (`spell_id`, `ScriptName`) VALUES
+(79425, 'spell_westfall_reaping_blows'),
+(79436, 'spell_westfall_wake_harvest_golem');
+
+DELETE FROM `creature_text` WHERE `CreatureID`= 42601;
+INSERT INTO `creature_text` (`CreatureID`, `GroupID`, `ID`, `Text`, `Type`, `Language`, `Probability`, `Emote`, `Duration`, `Sound`, `BroadcastTextId`, `Comment`) VALUES
+(42601, 0, 0, 'You may only ride the Overloaded Harvest Golem at the Molsen Farm.', 42, 0, 100, 0, 0, 0, 42475, '');

src/server/scripts/EasternKingdoms/zone_westfall.cpp

@@ -17,6 +17,7 @@
 
 #include "ScriptMgr.h"
 #include "SpellScript.h"
+#include "CombatAI.h"
 
 class spell_westfall_unbound_energy : public SpellScript
 {
@@ -43,7 +44,119 @@ class spell_westfall_unbound_energy : public SpellScript
     }
 };
 
+enum ItsAlive
+{
+    // Events
+    EVENT_CHECK_AREA                = 1,
+    EVENT_DESPAWN_HARVESTER         = 2,
+
+    // Texts
+    SAY_ANNOUNCE_OUT_OF_AREA        = 0,
+
+    // Area Ids
+    AREA_ID_THE_MOEST_FARM          = 918,
+
+    // Creatures
+    NPC_ENERGIZED_HARVEST_REAPER    = 42342,
+    NPC_OVERLOADED_HARVEST_GOLEM    = 42601
+};
+
+struct npc_westfall_overloaded_harvest_golem : public VehicleAI
+{
+    npc_westfall_overloaded_harvest_golem(Creature* creature) : VehicleAI(creature) { }
+
+    void JustAppeared() override
+    {
+        _events.ScheduleEvent(EVENT_CHECK_AREA, 1s);
+    }
+
+    void UpdateAI(uint32 diff) override
+    {
+        _events.Update(diff);
+        while (uint32 eventId = _events.ExecuteEvent())
+        {
+            switch (eventId)
+            {
+                case EVENT_CHECK_AREA:
+                    if (me->GetAreaId() != AREA_ID_THE_MOEST_FARM)
+                    {
+                        if (Unit* owner = me->GetCharmerOrOwner())
+                            Talk(SAY_ANNOUNCE_OUT_OF_AREA, owner);
+                        _events.ScheduleEvent(EVENT_DESPAWN_HARVESTER, 8s);
+                    }
+                    else
+                        _events.Repeat(1s);
+                    break;
+                case EVENT_DESPAWN_HARVESTER:
+                    if (me->GetAreaId() != AREA_ID_THE_MOEST_FARM)
+                        me->DespawnOrUnsummon();
+                    else
+                        _events.ScheduleEvent(EVENT_CHECK_AREA, 1s);
+                    break;
+                default:
+                    break;
+            }
+        }
+    }
+
+private:
+    EventMap _events;
+};
+
+class spell_westfall_reaping_blows : public AuraScript
+{
+    PrepareAuraScript(spell_westfall_reaping_blows);
+
+    void HandlePeriodic(AuraEffect const* /*aurEff*/)
+    {
+        PreventDefaultAction();
+        if (Creature* reaper = GetTarget()->FindNearestCreature(NPC_ENERGIZED_HARVEST_REAPER, 5.f, true))
+            GetTarget()->CastSpell(reaper, GetSpellInfo()->Effects[EFFECT_1].TriggerSpell, true);
+    }
+
+    void Register() override
+    {
+        OnEffectPeriodic += AuraEffectPeriodicFn(spell_westfall_reaping_blows::HandlePeriodic, EFFECT_1, SPELL_AURA_PERIODIC_TRIGGER_SPELL);
+    }
+};
+
+class spell_westfall_wake_harvest_golem : public SpellScript
+{
+    PrepareSpellScript(spell_westfall_wake_harvest_golem);
+
+    SpellCastResult CheckTarget()
+    {
+        Unit* target = GetExplTargetUnit();
+        if (!target || !target->IsCreature())
+            return SPELL_FAILED_BAD_TARGETS;
+
+        return SPELL_CAST_OK;
+    }
+
+    void HandleScriptEffect(SpellEffIndex /*effIndex*/)
+    {
+        Unit* caster = GetCaster();
+        if (!caster || !caster->IsPlayer())
+            return;
+
+        if (Creature* target = GetHitCreature())
+        {
+            caster->ToPlayer()->KilledMonsterCredit(NPC_OVERLOADED_HARVEST_GOLEM);
+            target->DespawnOrUnsummon(100ms);
+        }
+    }
+
+    void Register() override
+    {
+        OnCheckCast += SpellCheckCastFn(spell_westfall_wake_harvest_golem::CheckTarget);
+        OnEffectHitTarget += SpellEffectFn(spell_westfall_wake_harvest_golem::HandleScriptEffect, EFFECT_0, SPELL_EFFECT_SCRIPT_EFFECT);
+    }
+};
+
 void AddSC_westfall()
 {
     RegisterSpellScript(spell_westfall_unbound_energy);
+    RegisterCreatureAI(npc_westfall_overloaded_harvest_golem);
+    RegisterAuraScript(spell_westfall_reaping_blows);
+    RegisterSpellScript(spell_westfall_wake_harvest_golem);
 }