GompertzCurve

MMO\rpg\xp · 1 symbol · generated 5 Oct 2026

class

GompertzCurve

Gompertz (asymmetric mastery curve). A skewed S-curve: growth takes longer to get going than Logistic does, then approaches its ceiling very gradually rather than snapping into a plateau — the long "last 10%" feeling of genuinely hard mastery domains (leadership, negotiation, therapy). Unlike Logistic/Habit, the two tails are NOT mirror images of each other.

class MMO\rpg\xp\GompertzCurve implements MMO\rpg\xp\iCurve

Namespace: MMO\rpg\xp
Implements: iCurve

XP(n) = max * e^(-displacement * e^(-growthRate * n))

Methods1

xpForLevel($n, $params)

Curves.php:137

function xpForLevel(int $n, array $params): float

$n	int
$params	array
returns	float