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D&D: class-balance Phase 2 — passive + L5 subclass tuning + in-tier parity assertion

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The Phase 1 per-class-mean summary was hiding the truth — most cells are
floor/ceiling-saturated (L10+ pinned at 1.0, L1-4 caster cells at high
tier pinned at 0.0), so means barely budge when you tune passives. Added
a per-(level, tier) cross-class spread diagnostic to the matrix log,
then tuned with the levers from doc §6 in priority order:

1. Class passives (dnd_passives.go) — caster trailers (Bard, Mage,
   Warlock, Sorcerer) gained level + casting-stat-scaled FlatDmgStart
   bursts so the L1-4 chassis isn't a quarterstaff + one weak spell
   against a T2-T3 monster; small DamageBonus riders (Mage/Bard/
   Sorcerer/Rogue +5%, Warlock 10→12%) and +1 attack for Bard/Warlock
   close the steady-DPS gap. Added clampNonNeg so ability-mod-scaled
   additions never go negative on sub-10-stat sheets.

2. Subclass L5 tiers (dnd_subclass_combat.go) — the three Sorcerer L5
   picks (Wild/Storm/Draconic) and Warlock Great Old One were defense-
   only or near-inert pre-tune; each gained a small bite (DamageBonus
   +0.10, or a FlatDmgStart burst for Storm) so the L5 chassis can press
   through a T4 monster.

Parity band locked in TestClassBalance_Phase1_FullMatrix: cross-class
spread ≤ 35pp on the in-tier diagonal — (level, tier) cells where the
level is appropriate for the tier (T1: L1-4, T2: L3-7, T3: L5-10, T4:
L7-15, T5: L10-20). Off-tier cells (L1 mage at T3 dungeon etc.) are
still logged but not asserted: those are level-vs-tier mismatches and
casters at L1-4 can't muscle through a T3 monster on a single L1-slot
spell the way martials muscle through with weapon dice. Worst in-tier
cell after tuning: ~26pp at L3/T2. The 35pp band gives ~9pp Monte-Carlo
headroom over the worst signal at 200 trials/cell.

TestApplyClassPassives expectations updated to match the new passives.
Phase 0 spike still green, full plugin suite (-short) clean.
This commit is contained in:
prosolis
2026-05-14 20:15:16 -07:00
parent ddfa89e7a7
commit 76f814c0c9
5 changed files with 224 additions and 20 deletions
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17
internal/plugin/dnd_xp_test.go
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@@ -224,16 +224,19 @@ func TestApplyClassPassives(t *testing.T) {
wantInitBias float64
}{
{ClassFighter, 0.05, 0, false, 0, 1.0, 0, 0},
{ClassRogue, 0, 0, true, 0, 1.0, 0, 0},
{ClassMage, 0, 1, false, 0, 1.0, 0, 0},
// Phase 2 class-balance rebalance: rogue picked up +5% damage,
// Mage/Bard/Warlock gained a level-scaled FlatDmgStart burst, Sorcerer's
// burst now also scales with level, and Warlock picked up +1 attack.
// CHA/INT are 0 in this zero-value sheet → abilityModifier = -5,
// clamped to 0 by clampNonNeg. Paladin at L1 is still 4 + 0.
{ClassRogue, 0.05, 0, true, 0, 1.0, 0, 0},
{ClassMage, 0.05, 1, false, 0, 1.0, 1, 0},
{ClassCleric, 0, 0, false, 5, 1.0, 0, 0},
{ClassRanger, 0.05, 1, false, 0, 1.0, 0, 0},
// Open5e caster scaffold. CHA 10 → +0 mod, so Sorcerer's FlatDmgStart
// is the flat 3; Paladin at L1 is 4 + 0.
{ClassDruid, 0, 0, false, 0, 0.95, 0, 0},
{ClassBard, 0, 0, false, 0, 1.0, 0, 1},
{ClassSorcerer, 0, 0, false, 0, 1.0, 3, 0},
{ClassWarlock, 0.10, 0, false, 0, 1.0, 0, 0},
{ClassBard, 0.05, 1, false, 0, 1.0, 1, 1},
{ClassSorcerer, 0.05, 0, false, 0, 1.0, 4, 0},
{ClassWarlock, 0.12, 1, false, 0, 1.0, 1, 0},
{ClassPaladin, 0, 0, false, 0, 1.0, 4, 0},
}
for _, tc := range cases {