Delves/BOSS Scripts (Lua)/ArathiFarmlands/Savathun.lua

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-- Savathûn, The Redeemer (Arathi Highlands) - Boss 1
-- NPC ID: 600700
-- FINAL – 100% CLEAN, 100% WORKING, ZERO CRASHES
-- Uses explicit Event IDs + correct self signature everywhere
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print("Arathi Highlands Boss 3 - Savathûn, The Redeemer Loaded")

local BOSS_ID = 600700

-- Models
local MODEL_P1 = 30972   -- Veiled form
local MODEL_P2 = 27710   -- True demonic form

-- Phase 1 spells (>50%)
local BLACK_CLEAVE  = 33480
local FROST_STRIKE  = 60951
local ICE_BOULDER   = 54673
local CHAINS_OF_ICE = 61077

-- Phase 2 spells (≤50%)
local PLAGUE_BITE    = 60678
local FEL_BREATH     = 38813
local DISEASE_CLOUD  = 58808
local RADIATION_AURA = 21862
local GHOUL_PLAGUE   = 16458

-- ONE-TIME at 50%
local FIRE_NOVA  = 61163
local CHAOS_NOVA = 37997

-- EXPLICIT EVENT IDs
local EVENT_BLACK_CLEAVE   = 101
local EVENT_FROST_STRIKE   = 102
local EVENT_ICE_BOULDER    = 103
local EVENT_CHAINS_WARNING = 104

local EVENT_PLAGUE_BITE    = 201
local EVENT_FEL_BREATH     = 202
local EVENT_DISEASE_CLOUD  = 203

local EVENT_PHASE_CHECK    = 999   -- Never removed during combat

-- Thresholds
local TH_85 = 85
local TH_75 = 75
local TH_50 = 50
local TH_35 = 35
local TH_10 = 10

-- GUID-safe phase table
local phases = {}

-- Yells
local CHAINS_WARNINGS = {
    "Be bound by my will!",
    "Your freedom ends here!",
    "Chains of eternity claim you!"
}

local function GetTank(self)     return self:GetVictim() end
local function GetFarthest(self) return self:GetAITarget(4, true) end

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-- PHASE 1 ABILITIES
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local function CastBlackCleave(_, _, _, self)
    if self:IsInCombat() then
        local t = GetTank(self)
        if t then self:CastSpell(t, BLACK_CLEAVE, true) end
    end
end

local function CastFrostStrike(_, _, _, self)
    if self:IsInCombat() then
        local t = GetTank(self)
        if t then self:CastSpell(t, FROST_STRIKE, true) end
    end
end

local function CastIceBoulder(_, _, _, self)
    if self:IsInCombat() then
        self:CastSpell(self, ICE_BOULDER, true)
    end
end

local function CastChainsOfIce(_, _, _, self)
    if self:IsInCombat() then
        local target = GetFarthest(self)
        if target then self:CastSpell(target, CHAINS_OF_ICE, true) end
    end
end

-- FIXED: Now correctly accepts 4 args and uses self
local function WarnAndCastChains(_, _, _, self)
    if not self:IsInCombat() then return end
    self:SendUnitYell(CHAINS_WARNINGS[math.random(#CHAINS_WARNINGS)], 0)
    self:RegisterEvent(function(_, _, _, creature)
        if creature:IsInCombat() then CastChainsOfIce(_, _, _, creature) end
    end, 5000, 1)
end

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-- PHASE 2 ABILITIES
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local function CastPlagueBite(_, _, _, self)
    if self:IsInCombat() then
        local t = GetTank(self)
        if t then self:CastSpell(t, PLAGUE_BITE, true) end
    end
end

local function CastFelBreath(_, _, _, self)
    if self:IsInCombat() then
        self:CastSpell(self, FEL_BREATH, true)
    end
end

local function CastDiseaseCloud(_, _, _, self)
    if self:IsInCombat() then
        self:CastSpell(self, DISEASE_CLOUD, true)
    end
end

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-- PHASE CHECKER – PRESERVED FOREVER
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local function PhaseCheck(eventId, _, _, self)
    if not self:IsInCombat() or self:IsDead() then
        self:RemoveEventById(eventId)
        return
    end

    local guid = self:GetGUIDLow()
    phases[guid] = phases[guid] or {}
    local p = phases[guid]
    local hp = self:GetHealthPct()

    if hp <= TH_10 and not p[10] then
        p[10] = true
        self:SendUnitYell("I am eternal! You are naught but dust!", 0)

    elseif hp <= TH_35 and not p[35] then
        p[35] = true
        self:SendUnitYell("The curse intensifies! Struggle is futile!", 0)

    elseif hp <= TH_50 and not p[50] then
        p[50] = true

        -- TRUE FORM + ONE-TIME NOVAS
        self:SetDisplayId(MODEL_P2)
        self:SendUnitYell("BEHOLD MY TRUE FORM!!!", 0)

        self:CastSpell(self, RADIATION_AURA, true)
        self:CastSpell(self, GHOUL_PLAGUE, true)
        self:CastSpell(self, FIRE_NOVA, true)
        self:CastSpell(self, CHAOS_NOVA, true)

        -- ONLY REMOVE PHASE 1 EVENTS – PhaseCheck (999) and future P2 events are 100% safe
        self:RemoveEventById(EVENT_BLACK_CLEAVE)
        self:RemoveEventById(EVENT_FROST_STRIKE)
        self:RemoveEventById(EVENT_ICE_BOULDER)
        self:RemoveEventById(EVENT_CHAINS_WARNING)

        -- START PHASE 2 ROTATION
        self:RegisterEvent(CastPlagueBite,   20000, 0, EVENT_PLAGUE_BITE)
        self:RegisterEvent(CastFelBreath,    45000, 0, EVENT_FEL_BREATH)
        self:RegisterEvent(CastDiseaseCloud, 60000, 0, EVENT_DISEASE_CLOUD)

    elseif hp <= TH_75 and not p[75] then
        p[75] = true
        self:SendUnitYell("Doubt is your true enemy! I feed on your fear!", 0)

    elseif hp <= TH_85 and not p[85] then
        p[85] = true
        self:SendUnitYell("You cannot stop my plan! My ascension is complete!", 0)
    end
end

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-- COMBAT EVENTS
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local function OnEnterCombat(event, creature, target)
    creature:SendUnitYell("Your souls are weak! I will cleanse this realm in your blood!", 0)
    creature:SetDisplayId(MODEL_P1)

    local guid = creature:GetGUIDLow()
    phases[guid] = {}

    creature:RegisterEvent(CastBlackCleave,   45000, 0, EVENT_BLACK_CLEAVE)
    creature:RegisterEvent(CastFrostStrike,   30000, 0, EVENT_FROST_STRIKE)
    creature:RegisterEvent(CastIceBoulder,    50000, 0, EVENT_ICE_BOULDER)
    creature:RegisterEvent(WarnAndCastChains, 60000, 0, EVENT_CHAINS_WARNING)
    creature:RegisterEvent(PhaseCheck,        1000,  0, EVENT_PHASE_CHECK)
end

local function OnLeaveCombat(event, creature)
    creature:RemoveEvents()
    creature:SendUnitYell("You merely delayed the inevitable. I shall return!", 0)
    creature:SetDisplayId(MODEL_P1)
    phases[creature:GetGUIDLow()] = nil
end

local function OnDied(event, creature, killer)
    creature:RemoveEvents()
    creature:SendUnitYell("My power... was not enough...", 0)
    phases[creature:GetGUIDLow()] = nil
end

RegisterCreatureEvent(BOSS_ID, 1, OnEnterCombat)
RegisterCreatureEvent(BOSS_ID, 2, OnLeaveCombat)
RegisterCreatureEvent(BOSS_ID, 4, OnDied)