This World of Warcraft AddOn tracks the talents, buffs and damage modifiers applied for Rake, Rip, Thrash and Lunar Inspiration Moonfire. These damage modifiers are then displayed from WeakAuras, Plater and other addons.

Feral Druid is the only class where damage over time abilities "snapshot". The buffs apply for the full duration of the debuff, even after they have expired. Deciding when to replace a weaker snapshot is what makes Feral so much fun to play.

• Debuff snapshots on all targets in combat range.
• Current buffed power and power difference if a debuff is refreshed.
• Uses talent, traits and conduits inside in and out of Shadowlands content.
• Efficient. Updates from events rather than every frame, maximizing FPS
• Provides a total and breakdown of damage modifier by buffs.

Enabling the FeralSnapshots NamePlates addon, snapshot strength will show on Blizzard NamePlates.

Each bleed that can snapshot shows indicators on the current and next snapshots based on the player's current buffs. Use this to decide to overwrite a bleed with a stronger or weaker version.

The shape and color of the indicator compares the current snapshot to what would be applied if the bleed is overwritten.

Indicator	Has Snapshot	Would apply snapshot	Power	Action
			Equal	Gain snapshotting buff (Tiger's Fury, Shadowmeld, Bloodtalons)
	X	X	Equal (buffed)	Reapply in pandemic window
		X	Gain	Reapply soon
	X		Loss	Gain snapshotting buff or wait for expiration

The lower indicator is for Tiger's Fury snapshots which applies to all Rake, Rip, Thrash and Moonfire with Lunar Inspiration.

The upper indicator is for bleed specific snapshots like Stealth, Bloodtalons and Clear Casting with Moment of Clarity.

Indicator	Buffs	Strength
	Prowl, Sudden Ambush (Talented), Shadowmeld (Racial)	160%
	Bloodtalons (Talented)	125%
	Clear Casting (Moment of Clarity)	115%

• Weakaura pack of DoTs attached to the Personal Resource Display: https://wago.io/MvvDUl_o9

• Plater script coloring relative power as stacks: https://wago.io/bfgPasy27

• Weakaura text aura: https://wago.io/Qy4t8or16

The global FeralSnapshots table provides functions that return a damage modifier table by buff class.

When buffs are active, the damage modifiers will reflect the power of each buff by spell. For example for rake, with tigersFury and a stealth spell active.

-- Snapshot examples with: Tiger's Fury, Sudden Ambush, and Bloodtalons auras

{ -- Rake
    tigersFury = 1.15,
    bloodtalons = 1,
    momentOfClarity = 1,
    stealth = 1.6,
    total = 1.84,
}

{ -- Rip
    tigersFury = 1.15,
    bloodtalons = 1.25,
    momentOfClarity = 1,
    stealth = 1,
    total = 1.4375,
}

The API functions return damage modifier tables for the spell per unit.

-- Next damage modifiers that would snapshot on next application based on
-- current buffs and talents.
--
-- Modifiers are >= 1
--
-- Returns nil if the spell will not snapshot.
FeralSnapshots.Next(spellId)
FeralSnapshots.NextRake()
FeralSnapshots.NextRip()
FeralSnapshots.NextThrash()
FeralSnapshots.NextMoonfire()

-- Current snapshot damage modifier applied to the unit.
--
-- Modifiers are >= 1
--
-- Returns nil if the spell is not applied.
-- Returns nil if the spell will not snapshot.
FeralSnapshots.Current(GUID, spellId)
FeralSnapshots.CurrentRake(GUID)
FeralSnapshots.CurrentRip(GUID)
FeralSnapshots.CurrentThrash(GUID)
FeralSnapshots.CurrentMoonfire(GUID)

-- Relative damage modifiers to the applied snapshot.
--
-- Stronger damage modifiers are > 1
-- Weaker damage modifiers are < 1
--
-- Returns the next damage modifiers if the spell is not applied.
-- Returns nil if the spell will not snapshot.
FeralSnapshots.Relative(GUID, spellId)
FeralSnapshots.RelativeRake(GUID)
FeralSnapshots.RelativeRip(GUID)
FeralSnapshots.RelativeThrash(GUID)
FeralSnapshots.RelativeMoonfire(GUID)

Spell IDs cast in Cat Form that snapshot:

{
    rake = 155722,     -- DoT portion
    rip = 1079,        -- DoT
    thrash = 405233,   -- DoT portion
    moonfire = 155625, -- lunar inspiration DoT portion
}

Add a Custom Status Trigger to your aura on events UNIT_AURA:player:target PLAYER_TARGET_CHANGED that exposes the relative damage percentage with dynamic stacks info:

Use conditions to.

• Color the text green when Stacks > 100
• Color the text red when Stacks < 100

• MoonBunnie's Feral Bleed Power Weakaura for percentage text https://wago.io/Syz8eBzY-
• Xan's snapshot tracker for corner icons (Wago unknown)

This project came from asking "What is the minimum information needed to be an amazing Feral Druid?".

Deciding when to cast a bleed is the most dynamic aspect of Feral gameplay. I wanted to aid that decision in any addon, like WeakAuras, Plater or other AddOns, without custom scripts in one addon depending on scripts in another.

• A versioned addon eases upgrades across patches/expansions and spell changes (/wave Savage Roar).
• A single addon compared to multiple WeakAuras ensures only one controller is active.
• A free and open source addon allows the Feral community to rally around what makes Durid 4 Fite!

Similar:

• Uses a global variable to access snapshots.
• Used for text auras of relative power - popular in WeakAura HUDs.

Different:

• This exposes damage modifiers along with totals per buff for corner icon or border color type displays.
• Minimum CPU usage/stutter by using OnEvent instead of OnUpdate (calculations every frame).
• Uses namespaced functions instead of table lookups for a stable and extensible API.