DamageLib

Damage Library for accurate damage calculations.

Properties

slot: SpellSlot

Functions

GetDamageFunctionMap

DamageLib.GetDamageFunctionMap() → unordered_map<hash, fun(source: AIBaseHero, bRawDamage: boolean, stage: integer): float>

Returns <hash, function> map with functions which calculate spell damage.

tip

You can extend our DamageLib with missing damage calculations for your champion script or overwrite existing ones if you think it will improve it.

note

Function must accept (source: AIBaseHero, bRawDamage: boolean, stage: integer) parameters and return float (damage).

Example: Get damage function map and replace Lux Q damage calculation function.

local LuxLightBindingSpellDataHash = Game.spelldataHash("LuxLightBinding") -- Spell Data hash is used as key for damageMap
local damageMap = DamageLib.GetDamageFunctionMap()
damageMap[LuxLightBindingSpellDataHash] = function(source, target, bRawDamage, stage)
    rawDamage = 100
    return bRawDamage and rawDamage or DamageLib.CalculateMagicalDamage(source, target, rawDamage)
end

---

GetSpellDamage

DamageLib.GetSpellDamage(
  spellHash: number,
  source: AIHeroClient,
  target: AIBaseClient,
  bRawDamage: boolean,
  stage: number,
  slot: SpellSlot
) → float

Argument	Type	Description
spellHash	number - unsigned	spelldataHash of the given spell.
source	AIHeroClient	Source unit.
target	AIBaseClient	Target unit.
bRawDamage	boolean	Return raw damage if true.
stage	number - integer	Return damage of certain stage, if spell supports multiple stages.
slot	SpellSlot	SpellSlot of the given spell.

Returns calculated damage of the given spell.

---

GetSpellDamage

DamageLib.GetSpellDamage(
  spellName: string,
  source: AIHeroClient,
  target: AIBaseClient,
  bRawDamage: boolean,
  stage: number
) → float

Argument	Type	Description
spellName	string	Name of the given spell.
source	AIHeroClient	Source unit.
target	AIBaseClient	Target unit.
bRawDamage	boolean	Return raw damage if true.
stage	number - integer	Return damage of certain stage, if spell supports multiple stages.

Returns calculated damage of the given spell.

---

CalculateAutoAttackDamage

DamageLib.CalculateAutoAttackDamage(source: AIBaseClient, target: AIBaseClient) → float

Argument	Type	Description
source	AIBaseClient	Source unit. AA damage will be taked from this unit.
target	AIBaseClient	Target unit

Returns calculated auto attack damage including various modifiers (armor, resistances, empowerments etc).

---

CalculatePhysicalDamage

DamageLib.CalculatePhysicalDamage(source: AIBaseClient, target: AIBaseClient, amount: float) → float

Argument	Type	Description
source	AIBaseClient	Source unit
target	AIBaseClient	Target unit
amount	float	Raw damage

Returns calculated physical damage including various modifiers (armor, resistances, empowerments etc).

---

CalculateMagicalDamage

DamageLib.CalculateMagicalDamage(source: AIBaseClient, target: AIBaseClient, amount: float) → float

Argument	Type	Description
source	AIBaseClient	Source unit
target	AIBaseClient	Target unit
amount	float	Raw damage

Returns calculated magical damage including various modifiers (armor, resistances, empowerments etc).

---

Examples

Replace Lux Q damage calc function, get damage from tooltip and print it using SDKSpell:GetDamage().

local LuxLightBindingSpellDataHash = Game.spelldataHash("LuxLightBinding") -- Spell Data hash is used as key for damageMap
local LuxLightBindingHash = Game.fnvhash("LuxLightBinding") -- FNV hash is used by AIBaseClient:GetSpellSlot(spellHash) function
local TotalDamageHash = Game.fnvhash("TotalDamageTT") -- FNV hash is used to access tooltip property with SpellBookEntry:GetCalculateInfo(...)
local damageMap = DamageLib.GetDamageFunctionMap()

damageMap[LuxLightBindingSpellDataHash] = function(source, target, bRawDamage, stage)
    local slot = source:GetSpellSlot(LuxLightBindingHash) -- This uses fnv hash
    if slot == SpellSlot.NullSlot then
        return 0
    end

    local entry = source:GetSpellEntry(slot)
    if not entry or not entry:IsValid() then
        return 0
    end

    local rawDamage = entry:GetCalculateInfo(source, TotalDamageHash, slot)

    if bRawDamage or not target or not target:IsValid() then
        return rawDamage
    end

    return DamageLib.CalculateMagicalDamage(source, target, rawDamage)
end

local Q = SDKSpell.Create(SpellSlot.Q, 1300, DamageType.Magical)
print("Q Damage", Q:GetDamage(Game.localPlayer)) -- This will use our custom damage calc function