import { describe, expect, it } from 'vitest' import fs from 'node:fs' import path from 'node:path' import zlib from 'node:zlib' import { MISSILE_METAS, HOLYBOLT_META, BLESSEDHAMMER_META, FISTOFTHEHEAVENSBOLT_META, FOA_META, BLESSEDHAMMEREX_META, BLOOD1_META, type MissileMeta, } from '../../../src/client/render/missiles-meta.ts' import { OVERLAY_METAS, ALL_OVERLAY_NAMES, // 10 Offensive Auras MIGHT_FRONT_AURA_META, MIGHT_BACK_AURA_META, HOLY_FIRE_FRONT_AURA_META, HOLY_FIRE_BACK_AURA_META, THORNS_FRONT_AURA_META, THORNS_BACK_AURA_META, BLESSED_AIM_FRONT_AURA_META, BLESSED_AIM_BACK_AURA_META, CONCENTRATION_FRONT_AURA_META, CONCENTRATION_BACK_AURA_META, HOLY_FREEZE_AURA_META, HOLY_SHOCK_FRONT_AURA_META, HOLY_SHOCK_BACK_AURA_META, SANCTUARY_FRONT_AURA_META, SANCTUARY_BACK_AURA_META, FANATICISM_FRONT_AURA_META, FANATICISM_BACK_AURA_META, CONVICTION_AURA_META, // 10 Defensive Auras PRAYER_FRONT_AURA_META, PRAYER_BACK_AURA_META, RESIST_FIRE_AURA_META, DEFIANCE_FRONT_AURA_META, DEFIANCE_BACK_AURA_META, RESIST_COLD_AURA_META, CLEANSING_FRONT_AURA_META, CLEANSING_BACK_AURA_META, RESIST_LIGHTNING_AURA_META, VIGOR_FRONT_AURA_META, VIGOR_BACK_AURA_META, MEDITATION_AURA_META, REDEMPTION_AURA_META, SALVATION_FRONT_AURA_META, SALVATION_BACK_AURA_META, // 16 Combat, Cast, Hit & State Overlays CHARGE_OVERLAY_META, CONVERSION_OVERLAY_META, CONVERSION_CAST_OVERLAY_META, HOLY_BOLT_CAST_OVERLAY_META, FIST_OF_THE_HEAVENS_CAST_OVERLAY_META, HAND_OF_GOD_OVERLAY_META, SANCTUARY_KNOCKBACK_OVERLAY_META, HOLY_FIRE_HIT_OVERLAY_META, HOLY_FIRE_INDICATE_OVERLAY_META, THORNS_HIT_OVERLAY_META, THORNS_INDICATE_OVERLAY_META, CAST_RESIST_FIRE_OVERLAY_META, CAST_RESIST_COLD_OVERLAY_META, CAST_RESIST_LIGHTNING_OVERLAY_META, CAST_RESIST_ALL_OVERLAY_META, STUN_OVERLAY_META, type OverlayMeta, } from '../../../src/client/render/overlays-meta.ts' // Strict PNG RGBA Decoder function decodeRgbaPng(buf: Buffer) { const width = buf.readUInt32BE(16) const height = buf.readUInt32BE(20) const bitDepth = buf[24]! const colorType = buf[25]! const idatParts: Buffer[] = [] let offset = 8 while (offset < buf.length) { const len = buf.readUInt32BE(offset) const type = buf.subarray(offset + 4, offset + 8).toString('ascii') if (type === 'IDAT') { idatParts.push(buf.subarray(offset + 8, offset + 8 + len)) } offset += 12 + len } const idat = Buffer.concat(idatParts) const raw = zlib.inflateSync(idat) const bpp = 4 const rowBytes = width * bpp const pixels = new Uint8Array(width * height * 4) let srcAt = 0 let dstAt = 0 for (let y = 0; y < height; y++) { const filter = raw[srcAt++] const row = raw.subarray(srcAt, srcAt + rowBytes) srcAt += rowBytes const prevRow = y > 0 ? pixels.subarray((y - 1) * rowBytes, y * rowBytes) : null const curRow = pixels.subarray(dstAt, dstAt + rowBytes) for (let x = 0; x < rowBytes; x++) { const left = x >= bpp ? curRow[x - bpp]! : 0 const up = prevRow ? prevRow[x]! : 0 const upLeft = prevRow && x >= bpp ? prevRow[x - bpp]! : 0 let val = row[x]! if (filter === 0) { // None } else if (filter === 1) { val = (val + left) & 0xff } else if (filter === 2) { val = (val + up) & 0xff } else if (filter === 3) { val = (val + Math.floor((left + up) / 2)) & 0xff } else if (filter === 4) { const p = left + up - upLeft const pa = Math.abs(p - left) const pb = Math.abs(p - up) const pc = Math.abs(p - upLeft) let pr = upLeft if (pa <= pb && pa <= pc) pr = left else if (pb <= pc) pr = up val = (val + pr) & 0xff } curRow[x] = val } dstAt += rowBytes } return { width, height, bitDepth, colorType, pixels } } describe('Milestone M6 — Paladin Asset Packaging & Registration', () => { const publicMissilesDir = path.resolve(__dirname, '../../../public/missiles') const packMissilesDir = path.resolve(__dirname, '../../../samples/d2-packs/missiles') const publicOverlaysDir = path.resolve(__dirname, '../../../public/overlays') const packOverlaysDir = path.resolve(__dirname, '../../../samples/d2-packs/overlays') const PALADIN_MISSILES = [ { name: 'holybolt', celFile: 'HolyBoltMissile', meta: HOLYBOLT_META }, { name: 'blessedhammer', celFile: 'blessedhammer', meta: BLESSEDHAMMER_META }, { name: 'fistoftheheavensbolt', celFile: 'HolyBoltMissile', meta: FISTOFTHEHEAVENSBOLT_META }, { name: 'foa', celFile: 'FOAorbiter', meta: FOA_META }, { name: 'blessedhammerex', celFile: 'blessedhammer', meta: BLESSEDHAMMEREX_META }, { name: 'blood1', celFile: 'BloodSmall01', meta: BLOOD1_META }, ] as const const PALADIN_AURAS = [ // 10 Offensive Auras { name: 'might_front', celFile: 'AuraMightFront', meta: MIGHT_FRONT_AURA_META, preDraw: false }, { name: 'might_back', celFile: 'AuraMightBack', meta: MIGHT_BACK_AURA_META, preDraw: true }, { name: 'holy_fire_front', celFile: 'AuraHolyFireFront', meta: HOLY_FIRE_FRONT_AURA_META, preDraw: false }, { name: 'holy_fire_back', celFile: 'AuraHolyFireBack', meta: HOLY_FIRE_BACK_AURA_META, preDraw: true }, { name: 'thorns_front', celFile: 'AuraThornsFront', meta: THORNS_FRONT_AURA_META, preDraw: false }, { name: 'thorns_back', celFile: 'AuraThornsBack', meta: THORNS_BACK_AURA_META, preDraw: true }, { name: 'blessed_aim_front', celFile: 'BlessedAim_front', meta: BLESSED_AIM_FRONT_AURA_META, preDraw: false }, { name: 'blessed_aim_back', celFile: 'BlessedAim_back', meta: BLESSED_AIM_BACK_AURA_META, preDraw: true }, { name: 'concentration_front', celFile: 'Concentration_front', meta: CONCENTRATION_FRONT_AURA_META, preDraw: false }, { name: 'concentration_back', celFile: 'Concentration_back', meta: CONCENTRATION_BACK_AURA_META, preDraw: true }, { name: 'holy_freeze', celFile: 'HolyFreeze', meta: HOLY_FREEZE_AURA_META, preDraw: true }, { name: 'holy_shock_front', celFile: 'HolyShock_front', meta: HOLY_SHOCK_FRONT_AURA_META, preDraw: false }, { name: 'holy_shock_back', celFile: 'HolyShock_back', meta: HOLY_SHOCK_BACK_AURA_META, preDraw: true }, { name: 'sanctuary_front', celFile: 'SanctuaryAura_Front', meta: SANCTUARY_FRONT_AURA_META, preDraw: true }, { name: 'sanctuary_back', celFile: 'SanctuaryAura_Back', meta: SANCTUARY_BACK_AURA_META, preDraw: true }, { name: 'fanaticism_front', celFile: 'Fanatacism_Front', meta: FANATICISM_FRONT_AURA_META, preDraw: false }, { name: 'fanaticism_back', celFile: 'Fanatacism_Back', meta: FANATICISM_BACK_AURA_META, preDraw: true }, { name: 'conviction', celFile: 'Conviction', meta: CONVICTION_AURA_META, preDraw: true }, // 10 Defensive Auras { name: 'prayer_front', celFile: 'AuraPrayerFront', meta: PRAYER_FRONT_AURA_META, preDraw: false }, { name: 'prayer_back', celFile: 'AuraPrayerBack', meta: PRAYER_BACK_AURA_META, preDraw: true }, { name: 'resist_fire', celFile: 'AuraResistFireFront', meta: RESIST_FIRE_AURA_META, preDraw: true }, { name: 'defiance_front', celFile: 'AuraDefianceFront', meta: DEFIANCE_FRONT_AURA_META, preDraw: false }, { name: 'defiance_back', celFile: 'AuraDefianceBack', meta: DEFIANCE_BACK_AURA_META, preDraw: true }, { name: 'resist_cold', celFile: 'AuraResistColdBack', meta: RESIST_COLD_AURA_META, preDraw: true }, { name: 'cleansing_front', celFile: 'Cleansing_front', meta: CLEANSING_FRONT_AURA_META, preDraw: false }, { name: 'cleansing_back', celFile: 'Cleansing_back', meta: CLEANSING_BACK_AURA_META, preDraw: true }, { name: 'resist_lightning', celFile: 'AuraResistLightningBack', meta: RESIST_LIGHTNING_AURA_META, preDraw: true }, { name: 'vigor_front', celFile: 'Stamina_front', meta: VIGOR_FRONT_AURA_META, preDraw: false }, { name: 'vigor_back', celFile: 'Stamina_back', meta: VIGOR_BACK_AURA_META, preDraw: true }, { name: 'meditation', celFile: 'Meditation', meta: MEDITATION_AURA_META, preDraw: false }, { name: 'redemption', celFile: 'Redemption', meta: REDEMPTION_AURA_META, preDraw: true }, { name: 'salvation_front', celFile: 'AuraResistAllFront', meta: SALVATION_FRONT_AURA_META, preDraw: false }, { name: 'salvation_back', celFile: 'AuraResistAllBack', meta: SALVATION_BACK_AURA_META, preDraw: true }, ] as const const PALADIN_COMBAT_OVERLAYS = [ { name: 'charge', celFile: 'Charge', meta: CHARGE_OVERLAY_META, preDraw: false }, { name: 'conversion', celFile: 'Conversion', meta: CONVERSION_OVERLAY_META, preDraw: false }, { name: 'conversioncast', celFile: 'AuraResistColdBackCast', meta: CONVERSION_CAST_OVERLAY_META, preDraw: false }, { name: 'holy_bolt_cast', celFile: 'HolyBoltCloud', meta: HOLY_BOLT_CAST_OVERLAY_META, preDraw: false }, { name: 'fist_of_the_heavens_cast', celFile: 'FOACast', meta: FIST_OF_THE_HEAVENS_CAST_OVERLAY_META, preDraw: false }, { name: 'handofgod', celFile: 'HolyShockHit', meta: HAND_OF_GOD_OVERLAY_META, preDraw: false }, { name: 'sanctuary_knockback', celFile: 'SanctuaryKnockback', meta: SANCTUARY_KNOCKBACK_OVERLAY_META, preDraw: false }, { name: 'holy_fire_hit', celFile: 'AuraHolyFireHit', meta: HOLY_FIRE_HIT_OVERLAY_META, preDraw: false }, { name: 'holy_fire_indicate', celFile: 'AuraHfireIndicate', meta: HOLY_FIRE_INDICATE_OVERLAY_META, preDraw: false }, { name: 'thorns_hit', celFile: 'AuraThornsHit', meta: THORNS_HIT_OVERLAY_META, preDraw: false }, { name: 'thorns_indicate', celFile: 'AuraHfireIndicate', meta: THORNS_INDICATE_OVERLAY_META, preDraw: false }, { name: 'cast_resistfire', celFile: 'AuraResistFireFrontCast', meta: CAST_RESIST_FIRE_OVERLAY_META, preDraw: true }, { name: 'cast_resistcold', celFile: 'AuraResistColdBackCast', meta: CAST_RESIST_COLD_OVERLAY_META, preDraw: false }, { name: 'cast_resistlight', celFile: 'AuraResistLightningBackCast', meta: CAST_RESIST_LIGHTNING_OVERLAY_META, preDraw: false }, { name: 'cast_resistall', celFile: 'AuraResistAllCast', meta: CAST_RESIST_ALL_OVERLAY_META, preDraw: true }, { name: 'stun', celFile: 'Stun', meta: STUN_OVERLAY_META, preDraw: false }, ] as const const ALL_PALADIN_OVERLAYS = [...PALADIN_AURAS, ...PALADIN_COMBAT_OVERLAYS] describe('Suite 1: Physical Asset Existence & File Mirroring', () => { it('1.1 Verifies all 6 Paladin missile PNG and JSON files exist in public/missiles and samples/d2-packs/missiles', () => { for (const m of PALADIN_MISSILES) { for (const dir of [publicMissilesDir, packMissilesDir]) { const pngPath = path.join(dir, `${m.name}.png`) const jsonPath = path.join(dir, `${m.name}.json`) expect(fs.existsSync(pngPath), `Missing missile PNG: ${pngPath}`).toBe(true) expect(fs.existsSync(jsonPath), `Missing missile JSON: ${jsonPath}`).toBe(true) const stat = fs.statSync(pngPath) expect(stat.size, `${pngPath} file size must be > 1000 bytes`).toBeGreaterThan(1000) const buf = fs.readFileSync(pngPath) expect(buf[0]).toBe(0x89) expect(buf[1]).toBe(0x50) // 'P' expect(buf[2]).toBe(0x4e) // 'N' expect(buf[3]).toBe(0x47) // 'G' } } }) it('1.2 Verifies all Paladin overlay PNG and JSON files exist in public/overlays and samples/d2-packs/overlays', () => { for (const o of ALL_PALADIN_OVERLAYS) { for (const dir of [publicOverlaysDir, packOverlaysDir]) { const pngPath = path.join(dir, `${o.name}.png`) const jsonPath = path.join(dir, `${o.name}.json`) expect(fs.existsSync(pngPath), `Missing overlay PNG: ${pngPath}`).toBe(true) expect(fs.existsSync(jsonPath), `Missing overlay JSON: ${jsonPath}`).toBe(true) const stat = fs.statSync(pngPath) expect(stat.size, `${pngPath} file size must be > 1000 bytes`).toBeGreaterThan(1000) const buf = fs.readFileSync(pngPath) expect(buf[0]).toBe(0x89) expect(buf[1]).toBe(0x50) expect(buf[2]).toBe(0x4e) expect(buf[3]).toBe(0x47) } } }) }) describe('Suite 2: Metadata Registry & Frame Geometry Invariants', () => { it('2.1 Verifies Paladin missiles metadata schema and geometry bounds', () => { for (const m of PALADIN_MISSILES) { const meta = MISSILE_METAS[m.name] expect(meta, `MISSILE_METAS missing ${m.name}`).toBeDefined() expect(meta!.name).toBe(m.name) expect(meta!.celFile).toBe(m.celFile) expect(meta!.width).toBeGreaterThan(0) expect(meta!.height).toBeGreaterThan(0) expect(meta!.directions).toBeGreaterThan(0) expect(meta!.framesPerDirection).toBeGreaterThan(0) expect(meta!.animSpeed).toBe(16) expect(meta!.groups.length).toBe(meta!.directions) for (const group of meta!.groups) { expect(group.length).toBe(meta!.framesPerDirection) for (const [x, y, w, h, ax, ay] of group) { expect(x).toBeGreaterThanOrEqual(0) expect(y).toBeGreaterThanOrEqual(0) expect(x + w).toBeLessThanOrEqual(meta!.width) expect(y + h).toBeLessThanOrEqual(meta!.height) expect(w).toBeGreaterThan(0) expect(h).toBeGreaterThan(0) expect(typeof ax).toBe('number') expect(typeof ay).toBe('number') } } } }) it('2.2 Verifies Paladin overlays metadata schema, frames, and preDraw flags', () => { for (const o of ALL_PALADIN_OVERLAYS) { const meta = OVERLAY_METAS[o.name] expect(meta, `OVERLAY_METAS missing ${o.name}`).toBeDefined() expect(meta!.name).toBe(o.name) expect(meta!.celFile).toBe(o.celFile) expect(meta!.width).toBeGreaterThan(0) expect(meta!.height).toBeGreaterThan(0) expect(meta!.directions).toBe(1) expect(meta!.frames).toBeGreaterThan(0) expect(meta!.framesPerDirection).toBe(meta!.frames) expect(meta!.animRate).toBeGreaterThan(0) expect(meta!.trans).toBe(3) expect(meta!.preDraw).toBe(o.preDraw) expect(meta!.groups.length).toBe(1) expect(meta!.groups[0]?.length).toBe(meta!.frames) for (const [x, y, w, h, ax, ay] of meta!.groups[0]!) { expect(x).toBeGreaterThanOrEqual(0) expect(y).toBeGreaterThanOrEqual(0) expect(x + w).toBeLessThanOrEqual(meta!.width) expect(y + h).toBeLessThanOrEqual(meta!.height) expect(w).toBeGreaterThan(0) expect(h).toBeGreaterThan(0) expect(typeof ax).toBe('number') expect(typeof ay).toBe('number') } } }) it('2.3 Verifies CelFile and alias lookups in MISSILE_METAS and OVERLAY_METAS', () => { // Missile CelFiles & aliases expect(MISSILE_METAS['HolyBoltMissile']).toBe(HOLYBOLT_META) expect(MISSILE_METAS['blessedhammer']).toBe(BLESSEDHAMMER_META) expect(MISSILE_METAS['FOAorbiter']).toBe(FOA_META) expect(MISSILE_METAS['BloodSmall01']).toBe(BLOOD1_META) // Overlay CelFiles & aliases expect(OVERLAY_METAS['Charge']).toBe(CHARGE_OVERLAY_META) expect(OVERLAY_METAS['Conversion']).toBe(CONVERSION_OVERLAY_META) expect(OVERLAY_METAS['conversionaura']).toBe(CONVERSION_OVERLAY_META) expect(OVERLAY_METAS['HolyBoltCloud']).toBe(HOLY_BOLT_CAST_OVERLAY_META) expect(OVERLAY_METAS['cast_undead']).toBe(HOLY_BOLT_CAST_OVERLAY_META) expect(OVERLAY_METAS['FOACast']).toBe(FIST_OF_THE_HEAVENS_CAST_OVERLAY_META) expect(OVERLAY_METAS['cast_fistofares']).toBe(FIST_OF_THE_HEAVENS_CAST_OVERLAY_META) expect(OVERLAY_METAS['handofgod']).toBe(HAND_OF_GOD_OVERLAY_META) expect(OVERLAY_METAS['fist_of_the_heavens_hit']).toBe(HAND_OF_GOD_OVERLAY_META) expect(OVERLAY_METAS['SanctuaryKnockback']).toBe(SANCTUARY_KNOCKBACK_OVERLAY_META) expect(OVERLAY_METAS['sanctuaryknockback']).toBe(SANCTUARY_KNOCKBACK_OVERLAY_META) expect(OVERLAY_METAS['Stun']).toBe(STUN_OVERLAY_META) expect(OVERLAY_METAS['stun']).toBe(STUN_OVERLAY_META) }) }) describe('Suite 3: PreDraw & Aura Stacking Rules', () => { it('3.1 Validates dual-layer preDraw invariant: back auras/rings are preDraw:true, front auras/hits are preDraw:false', () => { // All back auras must be preDraw: true const backAuras = [ MIGHT_BACK_AURA_META, PRAYER_BACK_AURA_META, HOLY_FIRE_BACK_AURA_META, THORNS_BACK_AURA_META, DEFIANCE_BACK_AURA_META, BLESSED_AIM_BACK_AURA_META, CLEANSING_BACK_AURA_META, CONCENTRATION_BACK_AURA_META, VIGOR_BACK_AURA_META, HOLY_SHOCK_BACK_AURA_META, SANCTUARY_BACK_AURA_META, FANATICISM_BACK_AURA_META, SALVATION_BACK_AURA_META, ] for (const meta of backAuras) { expect(meta.preDraw, `${meta.name} must have preDraw === true`).toBe(true) } // Ground rings must be preDraw: true const groundRings = [ RESIST_FIRE_AURA_META, RESIST_COLD_AURA_META, RESIST_LIGHTNING_AURA_META, HOLY_FREEZE_AURA_META, CONVICTION_AURA_META, REDEMPTION_AURA_META, SANCTUARY_FRONT_AURA_META, ] for (const meta of groundRings) { expect(meta.preDraw, `${meta.name} must have preDraw === true`).toBe(true) } // Front auras must be preDraw: false const frontAuras = [ MIGHT_FRONT_AURA_META, PRAYER_FRONT_AURA_META, HOLY_FIRE_FRONT_AURA_META, THORNS_FRONT_AURA_META, DEFIANCE_FRONT_AURA_META, BLESSED_AIM_FRONT_AURA_META, CLEANSING_FRONT_AURA_META, CONCENTRATION_FRONT_AURA_META, VIGOR_FRONT_AURA_META, HOLY_SHOCK_FRONT_AURA_META, FANATICISM_FRONT_AURA_META, SALVATION_FRONT_AURA_META, MEDITATION_AURA_META, ] for (const meta of frontAuras) { expect(meta.preDraw, `${meta.name} must have preDraw === false`).toBe(false) } // Combat hits, casts, and indicators expect(CHARGE_OVERLAY_META.preDraw).toBe(false) expect(CONVERSION_OVERLAY_META.preDraw).toBe(false) expect(CONVERSION_CAST_OVERLAY_META.preDraw).toBe(false) expect(HOLY_BOLT_CAST_OVERLAY_META.preDraw).toBe(false) expect(FIST_OF_THE_HEAVENS_CAST_OVERLAY_META.preDraw).toBe(false) expect(HAND_OF_GOD_OVERLAY_META.preDraw).toBe(false) expect(SANCTUARY_KNOCKBACK_OVERLAY_META.preDraw).toBe(false) expect(HOLY_FIRE_HIT_OVERLAY_META.preDraw).toBe(false) expect(HOLY_FIRE_INDICATE_OVERLAY_META.preDraw).toBe(false) expect(THORNS_HIT_OVERLAY_META.preDraw).toBe(false) expect(THORNS_INDICATE_OVERLAY_META.preDraw).toBe(false) expect(CAST_RESIST_FIRE_OVERLAY_META.preDraw).toBe(true) expect(CAST_RESIST_COLD_OVERLAY_META.preDraw).toBe(false) expect(CAST_RESIST_LIGHTNING_OVERLAY_META.preDraw).toBe(false) expect(CAST_RESIST_ALL_OVERLAY_META.preDraw).toBe(true) expect(STUN_OVERLAY_META.preDraw).toBe(false) }) }) describe('Suite 4: 32-bit RGBA & Dark Halo Suppression (Zero Black Borders)', () => { it('4.1 Verifies all baked Paladin missiles have 32-bit RGBA and zero dark boundary artifact pixels', () => { for (const m of PALADIN_MISSILES) { const pngPath = path.join(publicMissilesDir, `${m.name}.png`) const buf = fs.readFileSync(pngPath) const decoded = decodeRgbaPng(buf) expect(decoded.colorType, `${m.name}.png must be 32-bit RGBA (colorType 6)`).toBe(6) expect(decoded.bitDepth, `${m.name}.png bitDepth must be 8`).toBe(8) let blackOpaqueCount = 0 let visibleCount = 0 let gradientCount = 0 for (let i = 0; i < decoded.pixels.length; i += 4) { const r = decoded.pixels[i]! const g = decoded.pixels[i + 1]! const b = decoded.pixels[i + 2]! const a = decoded.pixels[i + 3]! const maxVal = Math.max(r, g, b) // Threshold invariant: max(r,g,b) <= 4 must have alpha === 0 if (maxVal <= 4 && a > 0) { blackOpaqueCount++ } if (maxVal >= 30 && a > 0) { visibleCount++ } if (maxVal > 4 && maxVal < 60 && a > 0 && a < 255) { gradientCount++ } } expect(blackOpaqueCount, `${m.name}.png contains ${blackOpaqueCount} dark boundary artifact pixels`).toBe(0) expect(visibleCount, `${m.name}.png must contain visible spell pixels`).toBeGreaterThan(0) expect(gradientCount, `${m.name}.png must contain anti-aliased edge gradient pixels`).toBeGreaterThan(0) } }) it('4.2 Verifies all baked Paladin overlays have 32-bit RGBA and zero dark boundary artifact pixels', () => { for (const o of ALL_PALADIN_OVERLAYS) { const pngPath = path.join(publicOverlaysDir, `${o.name}.png`) const buf = fs.readFileSync(pngPath) const decoded = decodeRgbaPng(buf) expect(decoded.colorType, `${o.name}.png must be 32-bit RGBA (colorType 6)`).toBe(6) expect(decoded.bitDepth, `${o.name}.png bitDepth must be 8`).toBe(8) let blackOpaqueCount = 0 let visibleCount = 0 for (let i = 0; i < decoded.pixels.length; i += 4) { const r = decoded.pixels[i]! const g = decoded.pixels[i + 1]! const b = decoded.pixels[i + 2]! const a = decoded.pixels[i + 3]! const maxVal = Math.max(r, g, b) // Threshold invariant: max(r,g,b) <= 4 must have alpha === 0 if (maxVal <= 4 && a > 0) { blackOpaqueCount++ } if (maxVal >= 30 && a > 0) { visibleCount++ } } expect(blackOpaqueCount, `${o.name}.png contains ${blackOpaqueCount} dark boundary artifact pixels`).toBe(0) expect(visibleCount, `${o.name}.png must contain visible overlay pixels`).toBeGreaterThan(0) } }) }) })