Firemaking - Melvor Idle 2

Crafting efficiency

Burn Logs to gain Firemaking XP and a chance to receive random item rewards.

Use Firemaking to light Lanterns, providing you with Light to take on Dark Combat Areas.

Burn special Prayer-related items obtained from Combat to gain Prayer Points (used to train the Prayer Skill).

Day

Sunset

Night

Each burn takes Interval and needs the full Item cost and Currency cost; they are spent unless Input Preservation Chance keeps them.
A burn pays each Product chances entry that succeeds and Currency reward, each doubled with Output Doubling Chance, and XP.
Then each Firemaking event of the burn's category, or of no category, whose requirements are met fires at its chance and gives max(1, trunc(quantity × interval ÷ 1,000)) of its reward item.

Base experience: Recipe base experience
Base item cost: Recipe ingredients items
Base currency cost: Recipe ingredients currencies
Item cost: Quantitymax(1, trunc(Base item cost quantity × (1 + Input Cost)))
Currency cost: Quantitymax(1, trunc(Base currency cost quantity × (1 + Input Cost)))
Base product chances: Recipe products
Product chances: Chanceclamp(Base product chances chance + Flat product chance + Base product chances chance × Increased product chance, 0, 1)
QuantityBase product chances quantity + trunc(Flat product quantity)
Interval: floor((Recipe base interval + Interval (Flat)) × (1 + Interval (%)))
Currency reward: Currencynone if Recipe currency reward = none, otherwise Recipe currency reward currency
Quantitynone if Recipe currency reward = none, otherwise max(trunc(Recipe currency reward quantity × (1 + Percent currency reward) + Flat currency reward), 1)

Once the bonfire is unlocked, every burn adds 5 × the log's base interval to the bonfire, up to the bonfire's maximum duration in hours × 3,600,000 ms.
Adding logs to the bonfire directly spends one log for each base interval of time it adds, up to the time missing.
The bonfire burns down only while Firemaking is not running, and its bonuses apply while it has time left.

Burning Logs is 5x more effective than manually adding.: The bonfire panel, once the bonfire is unlocked. A burn adds 5 × the log's base interval to the bonfire; a log added by hand adds its base interval once.
Bonfire TimeThe amount of time added to your Bonfire per action.: The tooltip of a log's bonfire time, which reads 5 × the log's base interval: the time each burn adds to the bonfire.

Each completed task adds its category's base points to its skill's guild; a task that stops being complete takes them back.
A skill's total points are the base points of every task it lists. A rank is reached at ceil(total × the rank's point percent) points.

Points per rank
Skill	Task points	Ranks
Firemaking	30	Firemaking Initiate 0; Apprentice Firekeeper 12; Journeyman Firekeeper 18

While any prayer is active, each of your hits that deals damage pays XP from Base experience, with that hit's damage and the summed base cost of the active prayers.