FA-86095 / Game economy crafting balance / Member archive

Stamina regeneration: Refills cannot exceed cap · case 05

Stamina potions used near full are wasted.

Member previewVariant 5 · 3 implementations · 8 checks per implementation

Case contract

Stamina regenerates 1 per 300 s while below cap, anchored at last_tick. Events [time, amount] are applied in time order (then amount); before each event (and finally at now) regeneration catches up: if it reaches cap the value becomes cap and the anchor moves to the event time, otherwise the anchor advances by whole periods. While at or above cap the anchor follows the event time. Amounts may push stamina above cap up to 999; negative amounts are spends that are rejected if they would go below zero. Return [stamina, anchor].

Why this case matters

Game economies leak or destroy currency when one crafting or pricing rule is off by one boundary, rounding stage or state update; the defect is observable in exact integer outcomes.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
overflow potion persists #1	`[5, 1200]`	`[15, 1200]`	Failed

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