ItemManager.Evaluate (unequipped), ConsumableItemEffect.Evaluate and
EquippedItem.Evaluate each hand-computed the same quality/durability/heat/
modifier arithmetic with small, undocumented disagreements (docs/stats-and-
power-cut.md Sec 0.2). Collapse the arithmetic into one function,
PerformanceStat.Evaluate(IStatContext), fed by three IStatContext
implementations: EquippedItem (the only one with heat, live durability and
modifiers), ConsumableItemEffect (progress substitutes for heat,
unconditionally, matching its prior behaviour exactly) and a new
UnequippedStatContext in ItemManager (no heat, no modifiers, by name).
No behaviour change beyond the two disagreements the cut map names as
defects. Each context's original NaN handling is preserved exactly
(unequipped throws with diagnostic detail; equipped/consumable fall back to
Min). Behavior.Evaluate(PerformanceStat) keeps its name and signature, so
the ~81 existing call sites are untouched.
Verified: dotnet test tests/Aetheria.Shared.Tests unchanged at 61/61 before
new tests are added; a real-catalog probe over GameData/Aetheria.cc found
the new unequipped path reproduces the old formula exactly across 3123
(item, quality, durability, stat) cases; Unity batchmode compiles with 0
error CS and the Cut 1/2/3 shield probes still pass; AetherDb census,
factions, dangling, station-fit, loadout 1 and hardpoint-fit are
byte-identical before and after.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
e9b688de51