- LightGrid Radial Ray-Marching (src/game/engine/light-grid.ts):
* Only count line-of-sight blockers (COLLIDE_VISIBLE | COLLIDE_DOOR) in updateObstacles
so floor rocks, stairs, and walkable blockers do not create dark spots.
* Trace radial rays from emitter to target cell (1 <= s < steps) so the emitter's
own cell is never self-occluded when hugging a wall, wall front-faces receive full
illumination, and authentic shadows are cast behind walls.
- Ground-Plane Vertical Elevation Compensation (src/render/renderer.ts):
* Encode vertical sprite elevation (elevationY) in top quad vertices while strictly
preserving the 10-float vertex stride (FLOATS_PER_VERTEX = 10) so upright walls,
objects, characters, and monsters sample the lightmap at their ground footprint.
- Scene Lighting & Clear Color Parity (src/scene/act-scene.ts):
* Set canvas clear color to pure pitch black [0, 0, 0] when lighting is enabled,
eliminating #08080a diamond void bands around cave boundaries.
* Scale light radii by SUB_TILES_PER_LIGHT_CELL (8 sub-tiles per cell: player torch 88).
* Register Objects.txt Lit0..2 emitters (TO, T1, T2, FB, B2, WP, SH, etc.) for cave torches.
* Map all spell skillIds (including Glacial Spike '55') for dynamic projectile lighting.
- Fix dagger classification in getAttackWeaponInfo: authentic 1.13c dagger 'Blade' (bld, knif) properly classified as dagger instead of sword
- Prevent runaway recursive sub-missile explosion cascade loops on piercing missiles (Bone Spear, Teeth, Bone Spirit)
- Fix Bone Spirit homing scalar speed doubling on non-horizontal angles (ensure scalar speed is invariant to homing angle)
- Ensure Poison Nova projectile TTL is exactly 50 frames per D2 1.13c standard
- Include adv-pnb-kinematics-stress.test.ts and adv-pnb-synergy-stress.test.ts stress test suites
- Implement 10 Poison and Bone skills (Teeth 67, Bone Armor 68, Poison Dagger 73,
Corpse Explosion 74, Bone Wall 78, Poison Explosion 83, Bone Spear 84, Bone Prison 88,
Poison Nova 92, Bone Spirit 93) per 1.13c ground truth.
- Decouple damage formulas into standalone exported functions: calculateTeethDamage,
calculateBoneArmorCapacity, calculatePoisonDaggerDamage, calculateCorpseExplosionDamage,
calculateBoneWallStats, calculatePoisonExplosionDamage, calculateBoneSpearDamage,
calculateBonePrisonStats, calculatePoisonNovaDamage, calculateBoneSpiritDamage.
- Preserve BATCH1_SKILLS length strictly at 38 skills.
- Enforce 2:1 isometric ground projection geometry (ISO_GROUND_ASPECT_RATIO = 0.5)
for collision, radial Poison Nova bursts (64 bolts), and trajectory kinematics.
- Implement Bone Spirit homing steering and Bone Spear piercing (collideKill = 0).
- Integrate casting lifecycle in act-scene: mana deduction, overlays, corpse consumption,
and dagger weapon requirement for Poison Dagger.
- Add comprehensive 37-test suite in tests/skills/nec/poison-bone.test.ts.
- Fix ghost property resistLightning to respect monster resistances and lightningResist in act-scene.ts
- Wire monster resistances across MonsterStats and applyEliteModifiers in combat.ts and monsters.ts
- Clamp Static Field damage non-lethally post-resistance scaling and protect against difficulty floor underflow in missile-engine.ts
- Implement continuous sub-step collision and raycast line-of-sight in missile-engine.ts and skills.ts
- Add persistent NextDelay tracking on GameEngine with automatic per-tick expired entry pruning
- Align Nova (64 bolts, aspect ratio 0.5, NextDelay 4) and Static Field in executeSkillCore113c
- Dual sprite falling trajectory: render falling meteor fireball (meteor) and flame tail (meteortail) descending diagonally during 60-tick countdown with additive blending
- Animation frame indexing: meteorcenter advances monotonically starting at frame 0, meteorfire plays emergence once (0..11) then loops 12..36 indefinitely
- Detonation timing: center expires and detonates at tick 60 exact (isExpired when ttl <= 1)
- Wall collision: drop meteorfire ground patches landing inside solid walls in MissileEngine
- Full test coverage: Dimensions 8 & 9 added to skill-056-meteor.test.ts, stress and adversarial test suites verified
- Remove targetX and targetY from stationary turret projectile definition in castSkill (act-scene.ts)
- Remove idle fallback to projectile.targetX/Y in tickProjectiles (skills.ts) so turrets only fire when an alive target is found within range
- Add negative unit test in Dimension 3 verifying 0 projectiles are spawned over 50 ticks with empty targets array
- Implement all 20 Paladin auras (offensive & defensive) with 1.13c MPQ parameters
- Town vs Wilderness filtering: friendly auras buff only self in town, broadcast to allies/mercenaries/summons in wilderness; offensive pulses and redemption suspended in town
- Conviction (#123) asymmetry: caster ring visual only with 0 self debuffs; wilderness enemies receive -Def% and -Res% debuffs with green spikes foot ring; suspended in town
- Holy Freeze (#114) parity: caster displays cyan ring, wilderness enemies take cold pulse damage, item_slow, and blue chill tint with ZERO enemy foot rings
- Offline asset baking: baked 20 aura overlay animations into public/overlays and generated src/render/overlays-meta.ts with zero runtime MPQ parsing
- Full test coverage in tests/skills/aura-target-parity.test.ts passing 6/6 tests and full TypeScript typecheck passing
- Extract and stitch all 213 Blizzard flp*.dc6 resting frames into items-atlas.png
- Support all 4 flpgld gold pile size groups and color dye transforms
- Implement resolveGroundItemSpriteRect() in src/ui/inventory.ts
- Render authentic isometric ground art with contact shadow in drawGroundItem()
- Eliminate synthetic blue boxes, 2D perspective shear hacks, and sparkle white dots
- Fix engine pickup entity matching so picked items are cleanly removed with zero residual dots
- Add tests/ground-items-flippy-parity.test.ts
- Decode and extract all frames for map objects (DCC/DC6) in scripts/pack-act-assets.ts
- Deduplicate unique member art across object placements and pack into objectPages atlas
- Serialize animatedFrames, frameDelta, frameDurationMs, cycleAnim, and sync from Objects.txt into scene.json
- Support multi-frame MapRuntime ObjectDrawable ticking and rendering in src/scene/act-scene.ts
- Introduce SplitMix64 spatial phase hash (computeObjectPhaseOffsetMs) for non-synced objects to eliminate unnatural mechanical synchronization across scene torches and campfires
- Preserve backward-compatibility for single-frame static objects (Stash B6)
- Add 100% passing test suite in tests/object-animation-113c.test.ts
troytt