STATUS-006computeEffectTick

stack_independent — two Acid Bomb DoTs from different casters tick separately

With stackingPolicy='stack_independent', applying the same Effect twice creates two distinct Effect instances on the target. Each has its own duration and ticks independently. Common case: two players DoT the same monster.

stackingPolicystackIndependentmultipleDoTInstances

Action

computeEffectTick

Compute tick #9 of effect acid_demonstration_dot_from_caster_alice

effectId: acid_demonstration_dot_from_caster_alice
atTick: 9
context.mapType: pve

Actors

Two-acid-bomb victim

monster · Lv80

defender

demonshadow 2mediumnormal

Active effects

acid_demonstration_dot_from_caster_alice
acid_demonstration_dot_from_caster_bob

HP 12000 / 12000

Hard DEF 25

Hard MDEF 15

Expected output

From the scenario fixture. Numerical values marked as null are placeholders pending rAthena verification.

tickDamage: 60

Alice's DoT at tick 9: 9 is a multiple of her tickInterval(3) past her appliedAt(0) → fires. Damage = floor(200 * 0.3) = 60. Bob's DoT exists independently with its own caster snapshot.

Show full expected JSON

{
  "_designNote": "Effect IDs MUST be globally unique per Actor when using stack_independent — that's why both effects in this scenario have different IDs encoding the caster. Implementation guidance: when a caller applies a stack_independent Effect, they should generate a unique ID like `${baseId}_${casterId}_${appliedAtTick}`."
}

Computed: EffectTickResult

Server-evaluated by calculateEffectTick() from @ro/core.

Damage at tick 9

acid_demonstration_dot_from_caster_aliceneutralmiscsnapshot

Per-tick value; caller decides whether to apply.

−60

Formula evaluation

D-015 tick pipeline

formula result	60
after stacks	60
floor + max(0)	60

Stack-aware formulas (e.g. stacks * floor(maxHP * 0.005)) handle scaling themselves; the library does not auto-multiply.

Formula scope

snapshotState (frozen at apply time)

maxHP	12,000
currentHP	12,000
maxSP	0
currentSP	0
baseLevel	80
stacks	1
atTick	9
str	0
agi	0
vit	0
int	0
dex	0
luk	0
casterMATK	200