Combat API (Retail — Patch 12.0.0)

Comprehensive reference for all combat-related APIs in WoW Retail. Critical: The combat log system was fundamentally changed in 12.0.0. COMBAT_LOG_EVENT_UNFILTERED is no longer available to addons.

Source: https://warcraft.wiki.gg/wiki/World_of_Warcraft_API Current as of: Patch 12.0.0 (Build 65655) — January 28, 2026 Scope: Retail only.

CRITICAL: Combat Log Changes in 12.0.0

COMBAT_LOG_EVENT_UNFILTERED (CLEU) is NO LONGER available to addons.

CombatLogGetCurrentEventInfo() is unavailable to tainted (addon) code
The old COMBAT_LOG_EVENT event is also unavailable
Combat log chat tab messages are now KStrings (unparseable escape sequences)
Addons like damage meters must use C_DamageMeter or the built-in system
A new COMBAT_LOG_EVENT_INTERNAL_UNFILTERED exists but is restricted to Blizzard code

New Combat Log Events (Addon-Facing)

Event	Description
`COMBAT_LOG_MESSAGE`	Formatted combat log messages (display text only)
`COMBAT_LOG_ENTRIES_CLEARED`	Combat log entries cleared
`COMBAT_LOG_APPLY_FILTER_SETTINGS`	Filter settings changed
`COMBAT_LOG_REFILTER_ENTRIES`	Entries need refiltering
`COMBAT_LOG_MESSAGE_LIMIT_CHANGED`	Message limit changed

Scope

This skill covers:

Combat Log — New 12.0.0 combat log system, COMBAT_LOG_MESSAGE
C_DamageMeter — Built-in damage/healing meter system
Threat — UnitThreatSituation, UnitDetailedThreatSituation
C_LossOfControl — Loss of control tracking
C_CombatText — Floating combat text
C_CombatAudioAlert — Combat audio alert system (accessibility)
C_Secrets / C_CurveUtil / C_DurationUtil — Secret value handling for combat data
Encounter Events — ENCOUNTER_STATE_CHANGED, ENCOUNTER_WARNING, timeline events
Spectator/Commentator — C_Commentator for spectator mode

C_DamageMeter — Built-in Damage Meter

New in 12.0.0. Provides official damage/healing meter data without needing combat log parsing.

Functions

Function	Returns	Description
`C_DamageMeter.GetCurrentSessionID()`	`sessionID`	Current combat session
`C_DamageMeter.GetSessions()`	`sessions`	All available sessions
`C_DamageMeter.GetSessionInfo(sessionID)`	`sessionInfo`	Session details
`C_DamageMeter.GetPlayerData(sessionID, unitGUID)`	`playerData`	Player's damage/healing
`C_DamageMeter.GetPartyData(sessionID)`	`partyData`	All party/raid data
`C_DamageMeter.ResetSessions()`	—	Clear all sessions

Events

Event	Description
`DAMAGE_METER_COMBAT_SESSION_UPDATED`	Session data updated
`DAMAGE_METER_CURRENT_SESSION_UPDATED`	Current session changed
`DAMAGE_METER_RESET`	Sessions cleared

Pattern: Reading Damage Meter Data

local frame = CreateFrame("Frame")
frame:RegisterEvent("DAMAGE_METER_COMBAT_SESSION_UPDATED")
frame:SetScript("OnEvent", function(self, event)
    local sessionID = C_DamageMeter.GetCurrentSessionID()
    if sessionID then
        local partyData = C_DamageMeter.GetPartyData(sessionID)
        -- partyData contains per-player damage/healing totals
    end
end)

Threat API

Threat Functions

Function	Returns	Description
`UnitThreatSituation(unit [, target])`	`status`	Threat status (0-3)
`UnitDetailedThreatSituation(unit, target)`	`isTanking, status, scaledPercent, rawPercent, threatValue`	Detailed threat info
`UnitThreatPercentageOfLead(unit, target)`	`percent`	Threat lead percentage

Threat Status Values

Value	Meaning
0	Not on threat table
1	On threat table, not tanking, not highest
2	On threat table, not tanking, highest
3	Tanking (highest threat with aggro)
nil	Unit doesn't exist or has no threat table

Note: In 12.0.0 instances, threat values for non-player units may be secret values. Pass them directly to UI widgets.

C_LossOfControl

Tracks crowd control effects on the player.

Function	Returns	Description
`C_LossOfControl.GetActiveLossOfControlData(index)`	`data`	Active CC effect data
`C_LossOfControl.GetActiveLossOfControlDataByUnit(unit, index)`	`data`	CC data for unit
`C_LossOfControl.GetActiveLossOfControlDataCount()`	`count`	Number of active CC effects
`C_LossOfControl.GetActiveLossOfControlDataCountByUnit(unit)`	`count`	CC count for unit

Loss of Control Data Fields

locType — Type of CC (STUN, FEAR, SILENCE, etc.)
spellID — Spell causing the CC
displayText — Localized display text
iconTexture — Spell icon
startTime — When CC started
timeRemaining — Duration remaining (may be DurationObject in 12.0.0)
duration — Total duration
lockoutSchool — School lockout (for SCHOOL_INTERRUPT type)
priority — Display priority

Events

Event	Description
`LOSS_OF_CONTROL_ADDED`	New CC effect applied
`LOSS_OF_CONTROL_UPDATE`	CC effect updated

C_CombatText — Floating Combat Text

Function	Returns	Description
`C_CombatText.IsCombatTextEnabled()`	`enabled`	FCT enabled?

Combat Text CVars

CVar	Description
`enableFloatingCombatText`	Enable/disable FCT
`floatingCombatTextCombatDamage`	Show damage
`floatingCombatTextCombatHealing`	Show healing
`floatingCombatTextCombatDamageStyle`	Damage display style

C_CombatAudioAlert — Combat Audio Alerts

New accessibility system providing audio cues for combat events. Replaces some functionality that previously required combat log parsing.

Function	Returns	Description
`C_CombatAudioAlert.IsEnabled()`	`enabled`	Audio alerts enabled?
`C_CombatAudioAlert.SetEnabled(enabled)`	—	Enable/disable

Secret Value Handling for Combat Data

C_Secrets — Secret Predicates

Function	Returns	Description
`C_Secrets.ShouldUnitHealthBeSecret(unit)`	`isSecret`	Is health secret for this unit?
`C_Secrets.ShouldUnitPowerBeSecret(unit [, powerType])`	`isSecret`	Is power secret?
`C_Secrets.ShouldUnitPowerMaxBeSecret(unit [, powerType])`	`isSecret`	Is max power secret?
`C_Secrets.ShouldUnitSpellCastBeSecret(unit, spellIdentifier)`	`isSpellCastSecret`	Is spell cast secret?
`C_Secrets.ShouldUnitSpellCastingBeSecret(unit)`	`isSpellCastingSecret`	Is all casting secret?

C_CurveUtil — Curves for Secret Values

Since addons cannot do math on secret values, Curves allow mapping secret numbers to visual output.

Function	Returns	Description
`C_CurveUtil.CreateCurve()`	`curveObject`	Create a numeric curve
`C_CurveUtil.CreateColorCurve()`	`colorCurveObject`	Create a color curve

Pattern: Health-to-Color Without Inspecting Value

-- Create a color curve: green at 100% → red at 0%
local colorCurve = C_CurveUtil.CreateColorCurve()
-- Configure curve points (green → yellow → red)

local healthBar = CreateFrame("StatusBar", nil, parent)
local hp = UnitHealth(unit)         -- SECRET in instances
local maxHp = UnitHealthMax(unit)   -- SECRET in instances
healthBar:SetMinMaxValues(0, maxHp) -- widgets accept secrets
healthBar:SetValue(hp)              -- widgets accept secrets
-- Color is set by curve without addon seeing the actual number

C_DurationUtil — Duration Objects

Function	Returns	Description
`C_DurationUtil.CreateDuration()`	`durationObject`	Create a duration object

-- Use DurationObject for cooldown display
local cooldown = CreateFrame("Cooldown", nil, parent, "CooldownFrameTemplate")
local duration = C_DurationUtil.CreateDuration()
cooldown:SetCooldownFromDurationObject(duration)

Encounter Events

New in 12.0.0, these replace addon combat log parsing for encounter state tracking.

Event	Description
`ENCOUNTER_STATE_CHANGED`	Encounter state changed (pull, wipe, kill)
`ENCOUNTER_WARNING`	Built-in encounter warning system
`ENCOUNTER_TIMELINE_EVENT_START`	Timeline event started
`ENCOUNTER_TIMELINE_EVENT_UPDATE`	Timeline event updated
`ENCOUNTER_TIMELINE_EVENT_END`	Timeline event ended

Other Combat Events

Event	Description
`PLAYER_REGEN_DISABLED`	Entering combat
`PLAYER_REGEN_ENABLED`	Leaving combat
`PLAYER_ENTER_COMBAT`	Player starts auto-attack
`PLAYER_LEAVE_COMBAT`	Player stops auto-attack
`UNIT_COMBAT`	Unit took/dealt damage or healing
`UNIT_THREAT_SITUATION_UPDATE`	Threat status changed
`UNIT_THREAT_LIST_UPDATE`	Threat table updated
`PLAYER_DEAD`	Player died
`PLAYER_ALIVE`	Player released spirit
`PLAYER_UNGHOST`	Player resurrected

Commentator / Spectator API

C_Commentator provides spectator mode functionality for esports viewing.

Key Functions

Function	Returns	Description
`C_Commentator.IsSpectating()`	`isSpectating`	In spectator mode?
`C_Commentator.GetAllPlayerData(teamIndex)`	`playerData`	All player data for team
`C_Commentator.GetPlayerData(teamIndex, playerIndex)`	`data`	Specific player data
`C_Commentator.GetTeamColorAndName(teamIndex)`	`color, name`	Team info
`C_Commentator.GetMatchDuration()`	`duration`	Match elapsed time
`C_Commentator.StartWargame(...)`	—	Start a wargame
`C_Commentator.UpdatePlayerInfo()`	—	Refresh player data

Common Patterns

Check Combat State

local function IsInCombat()
    return UnitAffectingCombat("player")
end

-- Or use the lockdown check for secure frame operations
if InCombatLockdown() then
    print("In combat lockdown — restricted operations blocked")
end

Threat-Based Nameplate Coloring

-- Note: In 12.0.0 instances, threat values may be secret
local status = UnitThreatSituation("player", "target")
if not issecretvalue(status) then
    if status == 3 then
        -- Tanking — show red
    elseif status == 2 then
        -- Pulling aggro — show orange
    else
        -- Safe — show green
    end
end

Loss of Control Display

local frame = CreateFrame("Frame")
frame:RegisterEvent("LOSS_OF_CONTROL_ADDED")
frame:RegisterEvent("LOSS_OF_CONTROL_UPDATE")
frame:SetScript("OnEvent", function()
    local count = C_LossOfControl.GetActiveLossOfControlDataCount()
    for i = 1, count do
        local data = C_LossOfControl.GetActiveLossOfControlData(i)
        if data then
            print(data.displayText, data.timeRemaining)
        end
    end
end)

Gotchas & Restrictions

CLEU is GONE — Do NOT register for COMBAT_LOG_EVENT_UNFILTERED. It will not fire for addon code in 12.0.0.
No combat log parsing — CombatLogGetCurrentEventInfo() is unavailable to tainted code.
KString chat messages — Combat log chat tab output is now KStrings that cannot be parsed.
Health is secret — UnitHealth() returns secret values in instances. Pass directly to StatusBar:SetValue().
Use DurationObjects — Don't do manual cooldown math. Use C_DurationUtil.CreateDuration() and Cooldown:SetCooldownFromDurationObject().
Built-in damage meter — Use C_DamageMeter for damage/healing data instead of parsing combat events.
SendAddonMessage blocked — Cannot send addon messages in instances. Boss mod addons must use new encounter event patterns.
Unit identity restricted — UnitName(), UnitClass() may return secrets for enemy units in instances during combat.
Threat in instances — Threat values may be secret. Pass to widgets directly; don't branch on them.
Design philosophy — Addons should NOT provide competitive advantage in combat. Blizzard provides built-in replacements for most restricted functionality.

wow-api-combat

Combat API (Retail — Patch 12.0.0)

CRITICAL: Combat Log Changes in 12.0.0

New Combat Log Events (Addon-Facing)

Scope

C_DamageMeter — Built-in Damage Meter

Functions

Events

Pattern: Reading Damage Meter Data

Threat API

Threat Functions

Threat Status Values

C_LossOfControl

Loss of Control Data Fields

Events

C_CombatText — Floating Combat Text

Combat Text CVars

C_CombatAudioAlert — Combat Audio Alerts

Secret Value Handling for Combat Data

C_Secrets — Secret Predicates

C_CurveUtil — Curves for Secret Values

Pattern: Health-to-Color Without Inspecting Value

C_DurationUtil — Duration Objects

Encounter Events

Other Combat Events

Commentator / Spectator API

Key Functions

Common Patterns

Check Combat State

Threat-Based Nameplate Coloring

Loss of Control Display

Gotchas & Restrictions