diff --git a/src/client/render/missiles-meta.ts b/src/client/render/missiles-meta.ts
index f05d5d2..0b942df 100644
--- a/src/client/render/missiles-meta.ts
+++ b/src/client/render/missiles-meta.ts
@@ -33,36 +33,8 @@ export interface MissileMeta {
   readonly groups: readonly (readonly MissileFrameTuple[])[]
 }
 
-/**
- * The engine's 64-direction space -> DCC direction tables.
- * Ported from OpenDiablo2 d2fileformats/d2dcc/dcc_dir_lookup.go (Dir64ToDcc).
- */
-const DIR64_TO_DCC: Readonly<Record<number, readonly number[]>> = {
-  4: [
-    0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1,
-    1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3,
-    3, 3, 3, 3, 3, 3, 3, 3, 0, 0, 0, 0, 0, 0, 0, 0,
-  ],
-  8: [
-    4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0, 5, 5, 5, 5,
-    5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 6, 6, 6, 6,
-    6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 7, 7, 7, 7,
-    7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4,
-  ],
-  16: [
-    4, 4, 8, 8, 8, 8, 0, 0, 0, 0, 9, 9, 9, 9, 5, 5,
-    5, 5, 10, 10, 10, 10, 1, 1, 1, 1, 11, 11, 11, 11, 6, 6,
-    6, 6, 12, 12, 12, 12, 2, 2, 2, 2, 13, 13, 13, 13, 7, 7,
-    7, 7, 14, 14, 14, 14, 3, 3, 3, 3, 15, 15, 15, 15, 4, 4,
-  ],
-  32: [
-    4, 16, 16, 8, 8, 17, 17, 0, 0, 18, 18, 9, 9, 19, 19, 5,
-    5, 20, 20, 10, 10, 21, 21, 1, 1, 22, 22, 11, 11, 23, 23, 6,
-    6, 24, 24, 12, 12, 25, 25, 2, 2, 26, 26, 13, 13, 27, 27, 7,
-    7, 28, 28, 14, 14, 29, 29, 3, 3, 30, 30, 15, 15, 31, 31, 4,
-  ],
-}
+import { dir64ToDcc } from '../../common/units/character.ts'
+import { dir64FromPoints } from '../../common/units/direction.ts'
 
 /**
  * Calculate DCC direction index for a missile based on 2D velocity vector.
@@ -75,15 +47,29 @@ const DIR64_TO_DCC: Readonly<Record<number, readonly number[]>> = {
  */
 export function velocityToDccDirection(vx: number, vy: number, directions = 16): number {
   if (directions <= 1) return 0
+  if (vx === 0 && vy === 0) return 0
   const angle = Math.atan2(vy, vx) // -PI to PI
   // Map angle so that South (PI/2) is 0, turning clockwise
   const fraction = (angle - Math.PI / 2) / (2 * Math.PI)
   const dir64 = Math.round((((fraction % 1) + 1) % 1) * 64) % 64
-  const table = DIR64_TO_DCC[directions]
-  if (table !== undefined) {
-    return table[dir64] ?? 0
-  }
-  return 0
+  return dir64ToDcc(dir64, directions)
+}
+
+/**
+ * Calculate DCC direction index from start to target coordinates using
+ * Diablo II 1.13c integer path direction calculation (0x6FD5CF40).
+ */
+export function pointsToDccDirection(
+  startX: number,
+  startY: number,
+  targetX: number,
+  targetY: number,
+  directions = 16,
+  fallback = 0,
+): number {
+  if (directions <= 1) return 0
+  const dir64 = dir64FromPoints(startX, startY, targetX, targetY, fallback)
+  return dir64ToDcc(dir64, directions)
 }
 
 export const FIREBOLT_META: MissileMeta = {
diff --git a/src/client/render/monster-art.ts b/src/client/render/monster-art.ts
index f901343..5af8fc6 100644
--- a/src/client/render/monster-art.ts
+++ b/src/client/render/monster-art.ts
@@ -107,7 +107,7 @@ export async function loadMonsterAtlas(
     }
   }
 
-  const atlas = buildIndexedAtlas(combined, 172, { width: 1024 })
+  const atlas = buildIndexedAtlas(combined, undefined, { width: 1024 })
   const handle = renderer.addIndexedAtlas(atlas.r8, atlas.width, atlas.height)
 
   const groups = atlas.groups.slice(0, baseCount)
diff --git a/src/client/render/renderer.ts b/src/client/render/renderer.ts
index 102a7fa..bf41549 100644
--- a/src/client/render/renderer.ts
+++ b/src/client/render/renderer.ts
@@ -33,6 +33,8 @@
  * a flush per colour.
  */
 import type { AtlasFrame, SpriteAtlas } from './atlas.ts'
+import type { Pl2, Pl2Transform } from '../../common/formats/pl2.ts'
+import { decodePl2, pl2ExpectedSize } from '../../common/formats/pl2.ts'
 
 /** Camera state for one frame. */
 export interface Camera {
@@ -94,6 +96,20 @@ export interface DrawOptions {
   readonly elevationY?: number
 }
 
+/**
+ * Optional transform tables or full PL2 file for authentic 1.13c hardware palette rows.
+ */
+export type PaletteTransformInput =
+  | Pl2
+  | readonly (Pl2Transform | undefined | null)[]
+  | {
+      readonly cold?: Pl2Transform | undefined
+      readonly poison?: Pl2Transform | undefined
+      readonly unique?: Pl2Transform | undefined
+      readonly champion?: Pl2Transform | undefined
+      readonly hueVariations?: readonly Pl2Transform[] | undefined
+    }
+
 /** Dynamic scene lighting configuration for Glide-style illumination. */
 export interface LightingConfig {
   /** Ambient light color in range 0..1, e.g. [0.03, 0.03, 0.04]. */
@@ -233,7 +249,7 @@ ${cases.join('\n')}
 ${paletteLookup}${discardAlpha}
   if (u_lightMode == 1 && u_blendMode == 0) {
     vec4 lightSample = texture(u_lightmap, v_lightUv);
-    vec3 dynamicLight = lightSample.rgb * (0.22 + 0.78 * lightSample.a);
+    vec3 dynamicLight = lightSample.rgb;
     vec3 totalLight = clamp(u_ambient.rgb + dynamicLight, 0.0, 1.0);
     outColor = vec4(texel.rgb * totalLight * v_tint.rgb, texel.a * v_tint.a);
   } else {
@@ -809,22 +825,68 @@ export class SpriteRenderer {
   /**
    * Upload the 256-colour Act palette and precompute hardware status tint rows:
    * - Row 0: Normal Act Palette
-   * - Row 1: Cold / Chilled Blue Tint
-   * - Row 2: Poisoned Green Tint
-   * - Row 3: Unique Gold Boss Tint
-   * - Row 4: Champion / Elite Blue Tint
+   * - Row 1: Cold / Chilled Blue Tint (authentic blueTones transform when available)
+   * - Row 2: Poisoned Green Tint (authentic greenTones transform when available)
+   * - Row 3: Unique Gold Boss Tint (authentic Utrans / hueVariations transform when available)
+   * - Row 4: Champion / Elite Blue Tint (authentic hueVariations transform when available)
    *
-   * @param rgb - 768-byte array of 256 RGB triplets (`[r, g, b, ...]`).
+   * @param rgb - 768-byte array of 256 RGB triplets (`[r, g, b, ...]`) or full decoded PL2 buffer.
+   * @param transforms - optional PL2 object or transform array for authentic 1.13c colormaps.
    */
-  setPalette(rgb: Uint8Array): void {
+  setPalette(rgb: Uint8Array, transforms?: PaletteTransformInput): void {
     if (this.disposed) return
     this.flush()
     const gl = this.gl
+
+    let baseRgb = rgb
+    let coldXform: Pl2Transform | undefined
+    let poisonXform: Pl2Transform | undefined
+    let uniqueXform: Pl2Transform | undefined
+    let champXform: Pl2Transform | undefined
+
+    if (rgb.byteLength >= pl2ExpectedSize()) {
+      try {
+        const pl2 = decodePl2(rgb)
+        baseRgb = pl2.rgb
+        coldXform = pl2.blueTones
+        poisonXform = pl2.greenTones
+        uniqueXform = pl2.hueVariations[2] ?? pl2.selectedUnitShift
+        champXform = pl2.hueVariations[4] ?? pl2.blueTones
+      } catch {
+        // Fall back to treating as raw RGB
+      }
+    } else if (transforms) {
+      if (Array.isArray(transforms)) {
+        coldXform = transforms[0] ?? undefined
+        poisonXform = transforms[1] ?? undefined
+        uniqueXform = transforms[2] ?? undefined
+        champXform = transforms[3] ?? undefined
+      } else if ('blueTones' in transforms && 'greenTones' in transforms) {
+        const pl2 = transforms as Pl2
+        coldXform = pl2.blueTones
+        poisonXform = pl2.greenTones
+        uniqueXform = pl2.hueVariations?.[2] ?? pl2.selectedUnitShift
+        champXform = pl2.hueVariations?.[4] ?? pl2.blueTones
+      } else {
+        const tObj = transforms as {
+          cold?: Pl2Transform
+          poison?: Pl2Transform
+          unique?: Pl2Transform
+          champion?: Pl2Transform
+          hueVariations?: readonly Pl2Transform[]
+        }
+        coldXform = tObj.cold ?? tObj.hueVariations?.[1]
+        poisonXform = tObj.poison ?? tObj.hueVariations?.[3]
+        uniqueXform = tObj.unique ?? tObj.hueVariations?.[2]
+        champXform = tObj.champion ?? tObj.hueVariations?.[4]
+      }
+    }
+
     const rgba = new Uint8Array(256 * PALETTE_ROWS * 4)
     for (let i = 1; i < 256; i += 1) {
-      const r = rgb[i * 3] ?? 0
-      const g = rgb[i * 3 + 1] ?? 0
-      const b = rgb[i * 3 + 2] ?? 0
+      const r = baseRgb[i * 3] ?? 0
+      const g = baseRgb[i * 3 + 1] ?? 0
+      const b = baseRgb[i * 3 + 2] ?? 0
       const lum = Math.round(0.299 * r + 0.587 * g + 0.114 * b)
 
       // Row 0: Normal Act Palette
@@ -836,30 +898,58 @@ export class SpriteRenderer {
 
       // Row 1: Cold / Chilled Icy Blue
       const r1 = (256 + i) * 4
-      rgba[r1] = Math.min(255, Math.round(r * 0.35))
-      rgba[r1 + 1] = Math.min(255, Math.round(g * 0.65 + 40))
-      rgba[r1 + 2] = Math.min(255, Math.round(b * 0.9 + 100))
+      if (coldXform) {
+        const targetIdx = (coldXform[i] ?? i) * 3
+        rgba[r1] = baseRgb[targetIdx] ?? 0
+        rgba[r1 + 1] = baseRgb[targetIdx + 1] ?? 0
+        rgba[r1 + 2] = baseRgb[targetIdx + 2] ?? 0
+      } else {
+        rgba[r1] = Math.min(255, Math.round(r * 0.35))
+        rgba[r1 + 1] = Math.min(255, Math.round(g * 0.65 + 40))
+        rgba[r1 + 2] = Math.min(255, Math.round(b * 0.9 + 100))
+      }
       rgba[r1 + 3] = 255
 
       // Row 2: Poisoned Venom Green
       const r2 = (256 * 2 + i) * 4
-      rgba[r2] = Math.min(255, Math.round(r * 0.35))
-      rgba[r2 + 1] = Math.min(255, Math.round(g * 0.85 + 85))
-      rgba[r2 + 2] = Math.min(255, Math.round(b * 0.35))
+      if (poisonXform) {
+        const targetIdx = (poisonXform[i] ?? i) * 3
+        rgba[r2] = baseRgb[targetIdx] ?? 0
+        rgba[r2 + 1] = baseRgb[targetIdx + 1] ?? 0
+        rgba[r2 + 2] = baseRgb[targetIdx + 2] ?? 0
+      } else {
+        rgba[r2] = Math.min(255, Math.round(r * 0.35))
+        rgba[r2 + 1] = Math.min(255, Math.round(g * 0.85 + 85))
+        rgba[r2 + 2] = Math.min(255, Math.round(b * 0.35))
+      }
       rgba[r2 + 3] = 255
 
       // Row 3: Unique Boss Golden Aura
       const r3 = (256 * 3 + i) * 4
-      rgba[r3] = Math.min(255, Math.round(lum * 1.25 + 55))
-      rgba[r3 + 1] = Math.min(255, Math.round(lum * 0.95 + 25))
-      rgba[r3 + 2] = Math.min(255, Math.round(lum * 0.35))
+      if (uniqueXform) {
+        const targetIdx = (uniqueXform[i] ?? i) * 3
+        rgba[r3] = baseRgb[targetIdx] ?? 0
+        rgba[r3 + 1] = baseRgb[targetIdx + 1] ?? 0
+        rgba[r3 + 2] = baseRgb[targetIdx + 2] ?? 0
+      } else {
+        rgba[r3] = Math.min(255, Math.round(lum * 1.25 + 55))
+        rgba[r3 + 1] = Math.min(255, Math.round(lum * 0.95 + 25))
+        rgba[r3 + 2] = Math.min(255, Math.round(lum * 0.35))
+      }
       rgba[r3 + 3] = 255
 
       // Row 4: Champion / Elite Royal Blue
       const r4 = (256 * 4 + i) * 4
-      rgba[r4] = Math.min(255, Math.round(lum * 0.45 + 30))
-      rgba[r4 + 1] = Math.min(255, Math.round(lum * 0.6 + 45))
-      rgba[r4 + 2] = Math.min(255, Math.round(lum * 1.3 + 75))
+      if (champXform) {
+        const targetIdx = (champXform[i] ?? i) * 3
+        rgba[r4] = baseRgb[targetIdx] ?? 0
+        rgba[r4 + 1] = baseRgb[targetIdx + 1] ?? 0
+        rgba[r4 + 2] = baseRgb[targetIdx + 2] ?? 0
+      } else {
+        rgba[r4] = Math.min(255, Math.round(lum * 0.45 + 30))
+        rgba[r4 + 1] = Math.min(255, Math.round(lum * 0.6 + 45))
+        rgba[r4 + 2] = Math.min(255, Math.round(lum * 1.3 + 75))
+      }
       rgba[r4 + 3] = 255
     }
     gl.bindTexture(gl.TEXTURE_2D, this.paletteTexture)
@@ -1065,6 +1155,8 @@ export class SpriteRenderer {
     const tint = options.tint
     const flipped = options.flipX === true
     const paletteRow = page.indexed === true ? (options.paletteRow ?? 0) : -1
+    const elevationY = options.elevationY !== undefined && options.elevationY > 0 ? Math.round(options.elevationY) : 0
+    const topPalette = elevationY > 0 ? paletteRow + elevationY * 16 : paletteRow
     const drawW = options.width ?? frame.width
     const drawH = options.height ?? frame.height
     this.quad(
@@ -1080,6 +1172,7 @@ export class SpriteRenderer {
       tint === undefined ? 1 : tint[3],
       unit,
       paletteRow,
+      topPalette,
     )
   }
 
diff --git a/src/client/scene/lighting-presets.ts b/src/client/scene/lighting-presets.ts
index 8e69b79..1cde410 100644
--- a/src/client/scene/lighting-presets.ts
+++ b/src/client/scene/lighting-presets.ts
@@ -187,6 +187,7 @@ export interface PointLightInput {
   readonly r: number
   readonly g: number
   readonly b: number
+  readonly flicker?: number | undefined
 }
 
 /**
@@ -242,18 +243,16 @@ export function applyLightingInputs(inputs: LightingInputs, targets: LightingPas
   const overrideAmb = presetCfg.overrideAmbient
   const envIntensity = inputs.environmentIntensity ?? environment?.currentIntensity ?? 255
   const rawIntensity = overrideAmb !== undefined ? overrideAmb.intensity : envIntensity
-  const isDarkCave = rawIntensity <= 14 || inputs.preset === 'cave' || inputs.preset === 'torch'
 
-  const flicker = (Math.sin(inputs.tick * 0.35) * 1.5) | 0
-  const basePlayerRadius = (isDarkCave ? 20 : 22) + (inputs.playerLightRadiusBonus ?? 0)
+  const basePlayerRadius = 11 + (inputs.playerLightRadiusBonus ?? 0)
   lightGrid.addLight({
     subTileX: pSub.x,
     subTileY: pSub.y,
-    radius: Math.max(8, basePlayerRadius + flicker),
-    intensity: 242,
+    radius: Math.max(1, basePlayerRadius),
+    intensity: 255,
     red: 255,
-    green: 234,
-    blue: 196,
+    green: 255,
+    blue: 255,
   })
 
   for (const pl of inputs.pointLights) {
@@ -265,19 +264,19 @@ export function applyLightingInputs(inputs: LightingInputs, targets: LightingPas
       red: pl.r,
       green: pl.g,
       blue: pl.b,
+      ...(pl.flicker !== undefined ? { flicker: pl.flicker } : {}),
     })
   }
 
-  const effectiveAmbIntensity = rawIntensity > 0 ? rawIntensity : 5
   const envColor = inputs.environmentColor ?? [
     environment?.currentRed ?? 255,
     environment?.currentGreen ?? 255,
     environment?.currentBlue ?? 255,
   ]
-  const effR = overrideAmb !== undefined ? overrideAmb.red : (rawIntensity > 0 ? envColor[0] : 185)
-  const effG = overrideAmb !== undefined ? overrideAmb.green : (rawIntensity > 0 ? envColor[1] : 175)
-  const effB = overrideAmb !== undefined ? overrideAmb.blue : (rawIntensity > 0 ? envColor[2] : 165)
-  const ambNorm = effectiveAmbIntensity / 255
+  const effR = overrideAmb !== undefined ? overrideAmb.red : envColor[0]
+  const effG = overrideAmb !== undefined ? overrideAmb.green : envColor[1]
+  const effB = overrideAmb !== undefined ? overrideAmb.blue : envColor[2]
+  const ambNorm = rawIntensity / 255
   const ambR = (effR / 255) * ambNorm
   const ambG = (effG / 255) * ambNorm
   const ambB = (effB / 255) * ambNorm
@@ -291,3 +290,822 @@ export function applyLightingInputs(inputs: LightingInputs, targets: LightingPas
     lightmap: lightGrid.exportTextureBuffer(),
   })
 }
+
+/** Canonical 1.13c Monster point light metadata from MonStats2.txt [Light, light-r, light-g, light-b] */
+export const CANONICAL_MONSTER_LIGHTS: Readonly<Record<string, readonly [radius: number, r: number, g: number, b: number]>> = Object.freeze({
+  "fallenshaman1": [5,230,168,255],
+  "fallenshaman2": [5,230,168,255],
+  "fallenshaman3": [5,230,168,255],
+  "fallenshaman4": [5,230,168,255],
+  "fallenshaman5": [5,230,168,255],
+  "willowisp1": [6,255,255,255],
+  "willowisp2": [6,255,255,255],
+  "willowisp3": [6,255,255,255],
+  "willowisp4": [6,255,255,255],
+  "vampire1": [3,255,138,255],
+  "vampire2": [3,255,138,255],
+  "vampire3": [3,255,138,255],
+  "vampire4": [5,255,255,255],
+  "vampire5": [3,255,138,255],
+  "andariel": [8,255,255,255],
+  "duriel": [9,255,255,255],
+  "firebeast": [3,255,138,255],
+  "iceglobe": [3,255,60,255],
+  "lightningbeast": [3,255,255,255],
+  "poisonorb": [3,102,255,255],
+  "flyingscimitar": [3,100,190,255],
+  "cantor1": [3,105,190,255],
+  "cantor2": [3,105,190,255],
+  "cantor3": [3,105,190,255],
+  "cantor4": [3,105,190,255],
+  "mephisto": [9,255,255,255],
+  "summoner": [9,174,255,255],
+  "tyrael1": [11,255,255,255],
+  "izual": [9,255,255,255],
+  "roguehire": [5,255,255,255],
+  "skmage_pois1": [5,102,255,255],
+  "skmage_pois2": [5,102,255,255],
+  "skmage_pois3": [5,102,255,255],
+  "skmage_pois4": [5,102,255,255],
+  "fetishshaman1": [5,255,255,255],
+  "fetishshaman2": [5,255,255,255],
+  "fetishshaman3": [5,255,255,255],
+  "fetishshaman4": [5,255,255,255],
+  "fetishshaman5": [5,255,255,255],
+  "claygolem": [5,255,255,255],
+  "bloodgolem": [5,255,255,255],
+  "irongolem": [5,255,255,255],
+  "firegolem": [5,255,255,255],
+  "familiar": [5,255,255,255],
+  "fingermage1": [7,255,90,255],
+  "fingermage2": [7,255,228,132],
+  "fingermage3": [7,255,255,255],
+  "doomknight1": [4,255,255,255],
+  "doomknight2": [4,255,255,255],
+  "doomknight3": [4,255,255,255],
+  "act2hire": [5,255,255,255],
+  "hydra1": [4,255,138,255],
+  "hydra2": [4,255,138,255],
+  "hydra3": [4,255,138,255],
+  "dopplezon": [5,255,255,255],
+  "valkyrie": [5,255,255,255],
+  "act3hire": [5,255,255,255],
+  "necromage": [5,255,255,255],
+  "tyrael2": [11,255,255,255],
+  "skmage_cold1": [5,255,60,255],
+  "skmage_cold2": [5,255,60,255],
+  "skmage_cold3": [5,255,60,255],
+  "skmage_cold4": [5,255,60,255],
+  "skmage_fire1": [5,255,138,255],
+  "skmage_fire2": [5,255,138,255],
+  "skmage_fire3": [5,255,138,255],
+  "skmage_fire4": [5,255,138,255],
+  "skmage_ltng1": [5,255,255,255],
+  "skmage_ltng2": [5,255,255,255],
+  "skmage_ltng3": [5,255,255,255],
+  "skmage_ltng4": [5,255,255,255],
+  "mephistospirit": [3,255,255,255],
+  "izualghost": [5,255,255,255],
+  "malachai": [5,255,255,255],
+  "hephasto": [5,255,255,255],
+  "spiritofbarbs": [4,255,255,255],
+  "heartofwolverine": [4,255,50,50],
+  "oaksage": [4,255,255,255],
+  "suicideminion1": [5,230,168,255],
+  "suicideminion2": [5,230,168,255],
+  "suicideminion3": [5,230,168,255],
+  "suicideminion4": [5,230,168,255],
+  "suicideminion5": [5,230,168,255],
+  "suicideminion6": [5,230,168,255],
+  "suicideminion7": [5,230,168,255],
+  "suicideminion8": [5,230,168,255],
+  "tyrael3": [11,255,255,255],
+  "evilhut": [7,255,255,150],
+  "ancientstatue1": [6,255,255,255],
+  "ancientstatue2": [6,255,255,255],
+  "ancientstatue3": [6,255,255,255],
+  "baalthrone": [6,255,255,255],
+  "baalcrabstairs": [6,255,255,255],
+  "act5hire1": [5,255,255,255],
+  "act5hire2": [5,255,255,255],
+  "worldstoneeffect": [15,255,178,64],
+  "ubermephisto": [9,255,255,255],
+  "uberandariel": [8,255,255,255],
+  "uberizual": [9,255,255,255],
+  "uberduriel": [9,255,255,255],
+})
+
+/** Canonical 1.13c Object point light metadata from Objects.txt [Lit0..Lit7, Red, Green, Blue, Flicker] */
+export const CANONICAL_OBJECT_LIGHTS: Readonly<Record<number, readonly [lits: readonly number[], r: number, g: number, b: number, flicker: number]>> = Object.freeze({
+  2: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  11: [[0,11,0,0,0,0,0,0],255,255,255,0],
+  17: [[0,0,17,0,0,0,0,0],255,255,255,0],
+  18: [[0,0,17,0,0,0,0,0],255,255,255,0],
+  19: [[0,0,17,0,0,0,0,0],255,255,255,0],
+  20: [[0,0,17,0,0,0,0,0],255,255,255,0],
+  21: [[0,0,17,0,0,0,0,0],255,255,255,0],
+  22: [[0,0,17,0,0,0,0,0],255,255,255,0],
+  26: [[5,10,5,0,0,0,0,0],255,255,255,0],
+  29: [[0,19,18,0,0,0,0,0],255,236,176,1],
+  33: [[18,18,18,0,0,0,0,0],255,255,213,1],
+  34: [[18,18,18,0,0,0,0,0],255,255,213,1],
+  37: [[0,19,19,0,0,0,0,0],255,236,176,0],
+  38: [[17,19,19,0,0,0,0,0],255,236,176,1],
+  39: [[0,19,19,0,0,0,0,0],255,236,176,1],
+  48: [[19,19,19,17,17,17,17,17],255,236,176,1],
+  49: [[19,19,19,17,17,17,17,17],255,236,176,1],
+  59: [[0,18,19,0,0,0,0,0],120,120,255,1],
+  60: [[0,18,19,0,0,0,0,0],255,120,120,1],
+  77: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  80: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  81: [[12,17,7,0,0,0,0,0],255,255,255,0],
+  83: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  84: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  85: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  86: [[0,19,0,0,0,0,0,0],255,255,180,0],
+  90: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  97: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  100: [[0,10,10,0,0,0,0,0],255,255,255,0],
+  101: [[0,17,18,0,0,0,0,0],255,236,176,0],
+  102: [[0,17,18,0,0,0,0,0],255,236,176,0],
+  108: [[16,0,0,0,0,0,0,0],255,255,255,0],
+  109: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  116: [[10,17,0,0,0,0,0,0],255,190,255,0],
+  117: [[0,19,18,0,0,0,0,0],255,236,176,0],
+  119: [[0,18,19,0,0,0,0,0],100,100,255,1],
+  120: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  123: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  124: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  131: [[17,0,0,0,0,0,0,0],255,100,100,0],
+  133: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  134: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  135: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  136: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  145: [[0,18,19,0,0,0,0,0],100,100,255,1],
+  149: [[0,17,17,0,0,0,0,0],255,255,255,0],
+  150: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  151: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  152: [[25,25,25,0,0,0,0,0],255,255,255,0],
+  153: [[0,18,18,0,0,0,0,0],255,190,255,0],
+  156: [[0,18,19,0,0,0,0,0],100,100,255,1],
+  157: [[0,18,19,0,0,0,0,0],100,100,255,1],
+  160: [[0,16,17,0,0,0,0,0],255,255,255,0],
+  161: [[0,17,18,0,0,0,0,0],255,255,255,0],
+  162: [[0,18,19,0,0,0,0,0],255,255,255,0],
+  164: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  165: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  166: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  167: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  168: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  170: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  172: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  173: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  184: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  189: [[0,18,19,0,0,0,0,0],100,100,255,0],
+  190: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  191: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  192: [[17,0,0,0,0,0,0,0],255,255,255,0],
+  197: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  199: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  200: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  201: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  202: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  206: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  226: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  231: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  232: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  237: [[0,18,19,0,0,0,0,0],100,100,255,1],
+  238: [[0,18,19,0,0,0,0,0],100,100,255,1],
+  239: [[0,0,17,0,0,0,0,0],255,255,255,0],
+  245: [[17,0,0,0,0,0,0,0],255,255,255,0],
+  259: [[0,3,0,0,0,0,0,0],255,125,125,1],
+  262: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  263: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  264: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  265: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  273: [[18,0,0,0,0,0,0,0],255,255,255,0],
+  275: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  276: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  277: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  278: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  279: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  280: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  281: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  282: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  283: [[17,0,0,0,0,0,0,0],255,255,255,0],
+  285: [[17,0,0,0,0,0,0,0],255,255,255,0],
+  286: [[17,0,0,0,0,0,0,0],255,255,255,0],
+  287: [[17,0,0,0,0,0,0,0],255,255,255,0],
+  288: [[0,18,19,0,0,0,0,0],100,100,255,1],
+  296: [[18,0,0,0,0,0,0,0],255,255,255,0],
+  297: [[18,0,0,0,0,0,0,0],255,255,255,0],
+  298: [[0,17,19,0,0,0,0,0],120,120,255,1],
+  299: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  300: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  303: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  304: [[17,0,0,0,0,0,0,0],255,255,255,0],
+  305: [[17,0,0,0,0,0,0,0],255,255,255,0],
+  306: [[17,0,0,0,0,0,0,0],255,255,255,0],
+  307: [[17,0,0,0,0,0,0,0],125,125,255,0],
+  308: [[17,0,0,0,0,0,0,0],125,125,255,0],
+  309: [[17,0,0,0,0,0,0,0],125,125,255,0],
+  310: [[17,0,0,0,0,0,0,0],125,125,255,0],
+  311: [[17,0,0,0,0,0,0,0],125,125,255,0],
+  312: [[17,0,0,0,0,0,0,0],125,125,255,0],
+  313: [[17,0,0,0,0,0,0,0],125,125,255,0],
+  319: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  320: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  323: [[0,18,19,0,0,0,0,0],100,100,255,1],
+  324: [[0,18,19,0,0,0,0,0],100,100,255,1],
+  325: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  327: [[10,19,19,0,0,0,0,0],255,236,176,0],
+  328: [[10,19,19,0,0,0,0,0],255,236,176,0],
+  342: [[15,17,19,0,0,0,0,0],255,100,100,1],
+  343: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  344: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  345: [[6,0,0,0,0,0,0,0],255,100,100,1],
+  346: [[8,0,0,0,0,0,0,0],255,100,100,1],
+  347: [[12,0,0,0,0,0,0,0],255,100,100,1],
+  351: [[6,0,0,0,0,0,0,0],255,100,100,0],
+  352: [[8,0,0,0,0,0,0,0],255,100,100,0],
+  353: [[10,0,0,0,0,0,0,0],255,100,100,0],
+  354: [[12,0,0,0,0,0,0,0],100,100,255,1],
+  355: [[12,0,0,0,0,0,0,0],100,100,255,1],
+  356: [[12,0,0,0,0,0,0,0],100,100,255,1],
+  358: [[19,19,0,0,0,0,0,0],255,236,176,1],
+  359: [[19,19,0,0,0,0,0,0],255,236,176,1],
+  361: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  370: [[19,0,0,0,0,0,0,0],255,255,255,1],
+  373: [[0,3,0,0,0,0,0,0],255,125,125,1],
+  376: [[13,17,19,15,13,13,0,0],255,236,176,0],
+  377: [[19,18,19,0,0,0,0,0],255,120,120,1],
+  380: [[17,15,17,0,0,0,0,0],255,200,200,0],
+  381: [[17,15,17,0,0,0,0,0],255,200,200,0],
+  392: [[0,15,17,0,0,0,0,0],255,128,128,0],
+  393: [[0,15,17,0,0,0,0,0],255,128,128,0],
+  394: [[0,15,17,0,0,0,0,0],255,128,128,0],
+  395: [[0,15,17,0,0,0,0,0],255,128,128,0],
+  396: [[0,15,17,0,0,0,0,0],255,128,128,0],
+  397: [[12,0,0,0,0,0,0,0],100,100,255,1],
+  398: [[0,18,19,0,0,0,0,0],100,100,255,1],
+  400: [[17,0,0,0,0,0,0,0],255,255,255,0],
+  401: [[18,0,0,0,0,0,0,0],180,55,55,0],
+  402: [[0,18,19,0,0,0,0,0],100,100,255,1],
+  403: [[17,0,0,0,0,0,0,0],255,255,255,0],
+  404: [[17,0,0,0,0,0,0,0],255,255,255,0],
+  405: [[12,0,0,0,0,0,0,0],100,100,255,1],
+  406: [[12,0,0,0,0,0,0,0],100,100,255,1],
+  407: [[12,0,0,0,0,0,0,0],100,100,255,1],
+  408: [[17,0,0,0,0,0,0,0],255,255,255,0],
+  409: [[19,0,0,0,0,0,0,0],255,255,255,0],
+  410: [[19,0,0,0,0,0,0,0],255,255,255,0],
+  414: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  415: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  419: [[0,11,0,0,0,0,0,0],255,255,255,0],
+  421: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  422: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  423: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  427: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  428: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  429: [[0,18,19,0,0,0,0,0],100,100,255,1],
+  434: [[19,0,0,0,0,0,0,0],255,255,255,0],
+  435: [[19,0,0,0,0,0,0,0],255,255,255,0],
+  436: [[19,0,0,0,0,0,0,0],255,255,255,0],
+  437: [[19,0,0,0,0,0,0,0],255,255,255,0],
+  438: [[19,0,0,0,0,0,0,0],255,255,255,0],
+  439: [[19,0,0,0,0,0,0,0],255,255,255,0],
+  442: [[17,0,0,0,0,0,0,0],255,255,255,0],
+  454: [[0,11,0,0,0,0,0,0],255,255,255,0],
+  464: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  465: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  472: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  473: [[0,10,5,0,0,0,0,0],255,255,255,0],
+  474: [[8,0,9,0,0,0,0,0],255,255,255,0],
+  475: [[8,0,9,0,0,0,0,0],255,255,255,0],
+  476: [[8,0,9,0,0,0,0,0],255,255,255,0],
+  479: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  480: [[19,0,0,0,0,0,0,0],255,255,255,0],
+  481: [[19,0,0,0,0,0,0,0],255,255,255,0],
+  482: [[19,0,0,0,0,0,0,0],255,255,255,0],
+  483: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  484: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  488: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  489: [[19,0,0,0,0,0,0,0],255,255,255,0],
+  490: [[19,0,0,0,0,0,0,0],255,255,255,0],
+  491: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  492: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  494: [[0,18,19,0,0,0,0,0],100,100,255,1],
+  495: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  496: [[0,18,19,0,0,0,0,0],100,100,255,1],
+  497: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  499: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  503: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  509: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  511: [[0,18,19,0,0,0,0,0],100,100,255,1],
+  512: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  514: [[19,0,0,0,0,0,0,0],255,255,255,0],
+  515: [[19,0,0,0,0,0,0,0],255,255,255,0],
+  520: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  521: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  522: [[0,17,0,0,0,0,0,0],255,255,255,0],
+  523: [[18,0,0,0,0,0,0,0],255,160,55,1],
+  536: [[19,0,0,0,0,0,0,0],255,255,255,0],
+  537: [[19,0,0,0,0,0,0,0],255,255,255,0],
+  538: [[19,0,0,0,0,0,0,0],255,255,255,0],
+  539: [[0,18,19,0,0,0,0,0],100,100,255,1],
+  546: [[0,15,19,0,0,0,0,0],255,255,255,0],
+  552: [[19,0,0,0,0,0,0,0],255,255,255,0],
+  553: [[19,0,0,0,0,0,0,0],255,255,255,0],
+  554: [[19,0,0,0,0,0,0,0],255,255,255,0],
+  558: [[19,0,0,0,0,0,0,0],255,255,255,0],
+  559: [[19,0,0,0,0,0,0,0],255,255,255,0],
+  560: [[19,0,0,0,0,0,0,0],255,255,255,0],
+  564: [[0,15,17,0,0,0,0,0],255,255,255,0],
+})
+
+/** Canonical 1.13c Missile point light metadata from Missiles.txt [Id, Light, Red, Green, Blue, Flicker] */
+export const CANONICAL_MISSILE_LIGHTS: Readonly<Record<string, readonly [id: number, radius: number, r: number, g: number, b: number, flicker: number]>> = Object.freeze({
+  "bighead1": [2,5,143,143,255,0],
+  "bighead2": [3,5,143,143,255,0],
+  "bighead3": [4,5,143,143,255,0],
+  "bighead4": [5,5,143,143,255,0],
+  "bighead5": [6,5,143,143,255,0],
+  "firearrow": [12,5,255,178,64,0],
+  "shafire1": [22,5,255,178,64,0],
+  "shafire2": [23,5,255,178,64,0],
+  "shafire3": [24,5,255,178,64,0],
+  "shafire4": [25,5,255,178,64,0],
+  "shafire5": [26,5,255,178,64,0],
+  "magicarrow": [27,3,255,255,255,0],
+  "icearrow": [28,5,81,81,255,0],
+  "fireexplode": [29,13,255,178,64,0],
+  "iceexplode": [30,11,81,81,255,0],
+  "bigheadexp": [33,8,143,143,255,0],
+  "shamanexp": [34,8,255,178,64,0],
+  "coldarrow": [40,5,81,81,255,0],
+  "explodingarrow": [41,5,255,178,64,0],
+  "explodingarrowexp": [42,15,255,178,64,0],
+  "plaguejavelin": [43,4,128,255,128,0],
+  "explosivepotionexp": [51,13,255,178,64,0],
+  "holybolt": [55,7,222,222,255,0],
+  "chargedbolt": [56,3,255,255,255,4],
+  "firebolt": [58,7,255,178,64,0],
+  "icebolt": [59,7,81,81,255,0],
+  "infernoflame1": [60,5,255,178,64,0],
+  "infernoflame2": [61,5,255,178,64,0],
+  "fireball": [62,7,255,178,64,0],
+  "blaze": [67,5,255,178,64,4],
+  "firewallmaker": [68,8,255,178,64,0],
+  "firewall": [69,5,255,178,64,4],
+  "unholybolt1": [77,5,255,255,255,0],
+  "unholybolt2": [78,5,255,255,255,0],
+  "unholybolt3": [79,5,255,255,255,0],
+  "unholybolt4": [80,5,255,255,255,0],
+  "immolationarrow": [85,9,255,178,64,0],
+  "guidedarrow": [86,3,255,255,255,0],
+  "freezingarrow": [87,5,81,81,255,0],
+  "freezingarrowexp1": [88,11,81,81,255,0],
+  "iceblast": [91,7,81,81,255,0],
+  "blessedhammer": [92,5,222,222,255,0],
+  "chainlightning": [93,4,255,255,255,0],
+  "fistofares": [94,3,255,255,255,0],
+  "chillblood": [95,4,81,81,255,0],
+  "glacialspike": [96,5,81,81,255,0],
+  "teleport": [97,6,255,255,255,0],
+  "lightningbolt": [98,4,255,255,255,0],
+  "lightninghit": [99,3,255,255,255,4],
+  "meteorcenter": [101,4,255,64,64,0],
+  "meteorexplode": [103,13,255,178,64,0],
+  "firesmall": [104,2,255,178,64,2],
+  "firemedium": [105,3,255,178,64,2],
+  "monblizcenter": [106,9,81,81,255,0],
+  "teeth": [114,3,255,255,255,0],
+  "corpseexplosion": [115,5,255,178,64,0],
+  "poisoncorpseexplosion": [116,5,255,178,64,0],
+  "monstercorpseexplode": [117,5,255,178,64,0],
+  "rogue2": [121,5,255,178,64,0],
+  "rogue3": [122,5,81,81,255,0],
+  "bat lightning bolt": [123,4,255,255,255,0],
+  "bat lightning trail": [124,3,255,255,255,4],
+  "skmage1": [125,5,255,255,255,0],
+  "skmage2": [126,5,255,255,255,0],
+  "skmage3": [127,5,255,255,255,0],
+  "skmage4": [128,5,255,255,255,0],
+  "vampirefireball": [129,8,255,178,64,0],
+  "vampirefirewallmaker": [130,8,255,178,64,0],
+  "vampirefirewall": [131,2,255,178,64,4],
+  "vampiremeteorcenter": [133,4,255,64,64,0],
+  "vampiremeteorexp": [134,13,255,178,64,0],
+  "raven2": [136,9,255,178,64,0],
+  "amphibiangoo1": [137,2,64,255,64,0],
+  "amphibiangoo2": [138,2,64,255,64,0],
+  "tentaclegoo": [139,2,64,255,64,0],
+  "curseeffectred": [142,1,255,255,255,0],
+  "fetishinferno1": [144,4,255,178,64,0],
+  "fetishinferno2": [145,4,255,178,64,0],
+  "cursecast": [147,1,255,255,255,0],
+  "redlightmissile": [151,5,255,178,64,0],
+  "greenlightmissile": [152,5,128,255,128,0],
+  "bluelightmissile": [153,5,81,81,255,0],
+  "whitelightmissile": [154,5,255,255,255,0],
+  "corpsepoisoncloud": [155,2,128,255,128,0],
+  "chillbloodcloud": [156,3,81,81,255,0],
+  "chillbloodpuff": [157,3,81,81,255,0],
+  "blizzardcenter": [158,9,81,81,255,0],
+  "thunderstorm1": [166,10,255,255,255,0],
+  "thunderstorm2": [167,10,255,255,255,0],
+  "thunderstorm3": [168,10,255,255,255,0],
+  "thunderstorm4": [169,10,255,255,255,0],
+  "monsterlight": [170,4,255,255,255,0],
+  "diablight": [172,3,255,255,255,0],
+  "redemption": [173,6,255,255,255,0],
+  "redemptionfail": [174,5,255,178,64,0],
+  "handofgod": [175,10,255,255,255,0],
+  "diabfire": [176,3,255,255,255,0],
+  "electric throwaxe": [178,4,255,255,255,0],
+  "diabwallmaker": [179,3,255,178,64,0],
+  "diabwall": [180,3,255,178,64,4],
+  "bonespear": [192,3,255,255,255,0],
+  "bonespirit": [193,3,255,255,255,0],
+  "lightunique": [195,3,255,255,255,4],
+  "skbowarrow4": [199,5,255,178,64,0],
+  "skbowarrow5": [200,5,255,255,255,0],
+  "andypoisonbolt": [203,5,255,255,255,0],
+  "lightningjavelin": [205,6,255,255,255,0],
+  "lightningfury": [206,6,255,255,255,0],
+  "bonewallmaker": [207,3,255,255,255,0],
+  "necromage1": [208,5,255,255,255,0],
+  "necromage2": [209,5,255,255,255,0],
+  "necromage3": [210,5,255,255,255,0],
+  "necromage4": [211,5,255,255,255,0],
+  "chargedstrikebolt": [215,3,255,255,255,4],
+  "buglightning": [225,3,255,255,255,4],
+  "immolationfire": [230,5,255,178,64,4],
+  "furylightning": [231,4,255,255,255,0],
+  "lightningstrike": [232,4,255,255,255,0],
+  "fistoftheheavensbolt": [234,8,222,222,255,0],
+  "meteorfire": [240,3,255,178,64,2],
+  "hydra": [247,5,255,255,255,0],
+  "zakarumlight": [258,3,255,255,255,0],
+  "frozenorb": [260,6,81,81,255,0],
+  "frozenorbbolt": [261,4,81,81,255,0],
+  "frozenorbnova": [262,4,81,81,255,0],
+  "frozenorbexplode": [263,6,81,81,255,0],
+  "chillingarmorbolt": [264,4,81,81,255,0],
+  "chainlightning2": [267,4,255,255,255,0],
+  "revivesmall": [268,5,255,178,64,0],
+  "revivemedium": [269,5,255,178,64,0],
+  "revivelarge": [270,5,255,178,64,0],
+  "monglacialspike": [271,5,81,81,255,0],
+  "mephisto": [276,9,255,255,255,0],
+  "firehead": [277,8,255,178,64,0],
+  "arcanelightningbolt": [279,8,178,178,255,0],
+  "frogfire": [280,4,255,64,64,0],
+  "frogcold": [281,4,64,64,255,0],
+  "frogpois": [282,4,64,255,64,0],
+  "desertfireball": [283,6,255,64,64,0],
+  "brdeathcontrol": [284,6,255,255,255,0],
+  "brdeathlightningbolt": [285,4,255,255,255,0],
+  "denofevillight": [287,10,255,255,255,0],
+  "towermist": [291,2,255,255,255,0],
+  "towermisttrail": [292,2,255,255,255,0],
+  "brdeathspirits1": [296,4,255,255,255,0],
+  "brdeathspiritnu": [297,4,255,255,255,0],
+  "brdeathspiritdt": [298,4,255,255,255,0],
+  "mephistodeathcontrol": [299,6,255,255,255,0],
+  "mephistofirewallmaker": [300,5,255,178,64,0],
+  "mephistofirewall": [301,5,255,178,64,4],
+  "mephistoexplosionbig": [303,13,255,178,64,0],
+  "mephistoexplosionsmall": [305,13,255,178,64,0],
+  "andyfirewallmaker": [308,8,255,178,64,0],
+  "andyfirewall": [309,5,255,178,64,4],
+  "andycolumnfirebase": [310,5,255,178,64,4],
+  "willowisplightningbolt": [320,8,178,178,255,0],
+  "queenpoisoncloud": [321,4,64,255,64,0],
+  "undeadmissile1": [323,9,255,255,255,0],
+  "undeadmissile2": [324,9,255,255,255,0],
+  "undeadmissile3": [325,9,255,255,255,0],
+  "undeadmissile4": [326,9,255,255,255,0],
+  "monbonespirit": [329,3,255,255,255,0],
+  "countessfirewall": [331,5,255,178,64,0],
+  "towerchestspawner": [332,15,192,192,255,0],
+  "hellmeteordown": [336,5,255,255,255,0],
+  "hellmeteorball": [337,5,255,255,255,0],
+  "horadriclightning": [339,3,255,255,255,0],
+  "horadriclight": [340,2,255,255,255,0],
+  "regurgitatorcorpse": [341,2,255,64,64,0],
+  "regurgitatorcorpseexpl": [342,13,255,64,64,0],
+  "highpriestlightning": [343,1,255,64,64,0],
+  "radamentdeath": [347,15,255,255,255,0],
+  "taintedsunflash": [351,4,255,255,255,0],
+  "healingbolt": [357,2,222,222,255,0],
+  "orbmist": [368,2,255,125,125,0],
+  "orbmisttrail": [369,2,255,125,125,0],
+  "orbmistfade": [370,2,255,125,125,0],
+  "hfcontrol": [373,8,255,255,255,0],
+  "izual mist loop": [380,2,255,255,255,0],
+  "izual lightning": [382,2,255,255,255,0],
+  "cairn stones bolt": [384,10,255,255,255,0],
+  "bomb explosion": [387,5,255,178,64,0],
+  "shock field on ground": [389,3,255,255,255,0],
+  "catapultchargedball": [407,5,143,143,255,0],
+  "catapultchargedballbolt": [408,3,255,255,255,4],
+  "catapult cold ball": [416,5,143,143,255,0],
+  "catapult plague ball": [419,5,143,143,255,0],
+  "catapult meteor ball": [422,5,143,143,255,0],
+  "catapult meteor fire": [423,5,255,178,64,0],
+  "healing vortex": [425,5,255,178,64,0],
+  "explodingjavalinexp": [430,15,255,178,64,0],
+  "lightjavalintrail": [432,3,255,255,255,4],
+  "lightjavalinexplosion": [433,3,255,255,255,4],
+  "icejavalinexplode": [435,11,81,81,255,0],
+  "advlighttrailingjav2": [439,3,255,255,255,4],
+  "advlightjavexplode": [440,3,255,255,255,4],
+  "sucfireball": [441,10,255,178,64,0],
+  "sucfireballexplode": [442,13,255,178,64,0],
+  "sucfireballtrail": [443,5,255,178,64,4],
+  "sucshockfieldmissile": [444,6,255,255,255,0],
+  "sucshockfield": [446,5,255,178,64,0],
+  "imp charged bolt": [450,3,255,255,255,4],
+  "moltenboulderfirepath": [455,5,255,178,64,0],
+  "firestorm": [457,5,255,178,64,4],
+  "erruption crack 1": [462,5,255,178,64,0],
+  "erruption crack 2": [463,5,255,178,64,0],
+  "volcano overlay fire": [480,10,255,64,64,0],
+  "lurecenter": [486,3,81,81,255,0],
+  "impmiss1": [488,5,255,64,64,0],
+  "impmiss2": [489,5,255,64,64,0],
+  "impmiss3": [490,5,255,64,64,0],
+  "impmiss4": [491,5,255,64,64,0],
+  "impmiss5": [492,5,255,64,64,0],
+  "sentrychargedbolt": [495,3,255,255,255,4],
+  "recycler explosion": [501,5,255,178,64,0],
+  "lightningtalons": [512,4,255,255,255,0],
+  "lightningtalonstrail": [513,3,255,255,255,4],
+  "phoenixtrail": [514,5,255,178,64,4],
+  "wake of destruction maker": [517,8,255,178,64,0],
+  "wake of destruction": [518,5,255,178,64,4],
+  "tigerfury": [520,3,255,255,255,0],
+  "tigerfurytrail": [521,5,255,178,64,4],
+  "inferno sentry 1": [523,5,255,178,64,0],
+  "inferno sentry 2": [524,5,255,178,64,0],
+  "sentrylightningbolt": [526,4,255,255,255,0],
+  "sentrylightninghit": [527,3,255,255,255,4],
+  "ancient death center": [541,2,255,125,125,0],
+  "ancient death cloud": [542,2,255,125,125,0],
+  "chainlightningcharge up": [544,4,255,255,255,0],
+  "pain worm appear": [545,5,255,178,64,0],
+  "baal taunt lightning trail": [548,4,255,255,255,0],
+  "baal spawn monsters": [550,5,81,81,255,0],
+  "blade shield missile": [552,5,255,255,255,0],
+  "baal inferno": [554,5,255,255,255,0],
+  "baal nova": [555,5,255,255,255,0],
+  "fistsoffireexplode": [556,15,255,178,64,0],
+  "fistsoffirefirewall": [557,5,255,178,64,0],
+  "clawsofthunderbolt": [558,3,255,255,255,4],
+  "bladesoficeexplode": [560,11,81,81,255,0],
+  "royalstrikemeteorcenter": [564,4,255,64,64,0],
+  "royalstrikemeteorexplode": [566,13,255,178,64,0],
+  "royalstrikemeteorfire": [567,5,255,178,64,0],
+  "royalstrikechainlightning": [568,4,255,255,255,0],
+  "royalstrikechaosice": [569,4,81,81,255,0],
+  "highpriestlightning2": [574,12,255,64,64,0],
+  "infernoflame3": [575,5,255,178,64,0],
+  "armageddonexplosion": [580,5,255,255,255,0],
+  "baalcorpseexplodedelay": [587,5,255,178,64,0],
+  "baalcorpseexplodeexpl": [588,5,255,178,64,0],
+  "baal cold maker": [589,5,143,143,255,0],
+  "baal cold trail": [590,5,143,143,255,0],
+  "baal spawn monsters exp": [591,5,81,81,255,0],
+  "impmiss21": [592,5,255,64,64,0],
+  "impmiss22": [593,5,255,64,64,0],
+  "impmiss23": [594,5,255,64,64,0],
+  "impmiss24": [595,5,255,64,64,0],
+  "impmiss25": [596,5,255,64,64,0],
+  "baalteleport": [613,3,128,64,64,0],
+  "baalclonedeath": [614,3,128,64,64,0],
+  "armageddonfire": [623,5,255,178,64,0],
+  "icesparkle": [624,2,255,178,64,0],
+  "baalfx control": [625,10,255,178,64,0],
+  "baalfx baal head 1": [632,5,255,178,64,0],
+  "baalfx baal head 2": [633,5,255,178,64,0],
+  "baalfx baal head 3": [634,5,255,178,64,0],
+  "blessedhammerex": [640,5,222,222,255,0],
+  "sentrylightningbolt2": [641,4,255,255,255,0],
+  "sentrylightninghit2": [642,3,255,255,255,1],
+  "skbowarrow6": [644,2,255,178,64,0],
+  "skbowarrow7": [645,2,81,81,255,0],
+  "skbowarrow8": [646,2,255,178,64,0],
+  "bighead6": [647,3,143,143,255,0],
+  "viper_fire": [650,3,255,255,255,0],
+  "viper_bonespear": [652,3,255,255,255,0],
+  "countessfirewallmaker": [653,8,255,178,64,0],
+  "skmagepois": [661,2,255,255,255,0],
+  "skmagecold": [662,2,255,255,255,0],
+  "skmagefire": [663,2,255,255,255,0],
+  "skmageltng": [664,2,255,255,255,0],
+  "succubusmiss": [665,2,255,64,64,0],
+  "willowisplightningbolt2": [666,8,178,178,255,0],
+  "impmissex": [669,5,255,64,64,0],
+  "diablogeddonexplosion": [673,5,255,255,255,0],
+  "diablogeddonfire": [674,5,255,178,64,0],
+  "megademoninferno": [675,4,255,178,64,0],
+  "trapfirebolt": [676,7,255,178,64,0],
+  "mephlight": [680,4,255,255,255,0],
+  "vampiremeteorfire": [681,3,255,178,64,2],
+})
+
+/** Canonical 1.13c Overlay point light metadata from Overlay.txt [Radius, InitRadius, Red, Green, Blue] */
+export const CANONICAL_OVERLAY_LIGHTS: Readonly<Record<number, readonly [radius: number, initRadius: number, r: number, g: number, b: number]>> = Object.freeze({
+  1: [11,11,255,255,255],
+  2: [10,1,255,193,103],
+  3: [6,6,255,193,103],
+  4: [10,1,210,210,255],
+  5: [6,6,210,210,255],
+  6: [10,1,255,255,200],
+  7: [6,6,255,255,200],
+  8: [10,1,211,148,255],
+  9: [6,6,211,148,255],
+  10: [6,6,211,148,255],
+  27: [8,1,255,184,199],
+  29: [9,1,255,178,64],
+  30: [9,1,255,178,64],
+  31: [9,1,81,81,255],
+  32: [9,1,81,81,255],
+  33: [9,1,81,81,255],
+  34: [9,1,255,255,255],
+  35: [14,14,255,193,103],
+  36: [14,14,210,210,255],
+  37: [8,1,255,193,103],
+  38: [13,1,200,200,255],
+  39: [13,1,200,200,255],
+  40: [13,1,200,200,255],
+  41: [6,1,81,81,255],
+  42: [6,1,81,81,255],
+  43: [6,1,81,81,255],
+  44: [6,1,81,81,255],
+  45: [5,1,255,255,200],
+  47: [6,1,255,255,255],
+  48: [6,6,255,255,255],
+  49: [6,1,255,255,255],
+  50: [2,2,255,255,255],
+  51: [6,1,255,255,255],
+  69: [10,1,255,193,103],
+  75: [6,1,255,255,255],
+  76: [6,1,255,255,255],
+  77: [6,1,255,193,103],
+  78: [2,2,103,193,255],
+  79: [2,2,255,193,103],
+  81: [1,3,255,193,103],
+  87: [3,3,255,255,255],
+  88: [3,3,255,255,255],
+  89: [3,3,255,255,255],
+  90: [3,3,255,255,255],
+  91: [3,3,255,255,255],
+  92: [3,3,255,255,255],
+  93: [3,3,255,255,255],
+  94: [3,3,255,255,255],
+  95: [3,3,81,81,255],
+  96: [8,8,255,255,255],
+  97: [8,8,255,255,255],
+  98: [8,1,255,255,255],
+  110: [11,11,255,255,255],
+  123: [10,1,210,210,255],
+  128: [6,1,255,64,64],
+  129: [6,1,255,210,210],
+  130: [6,1,255,210,210],
+  131: [6,1,255,255,255],
+  133: [6,1,255,255,255],
+  135: [6,1,255,255,255],
+  136: [6,1,255,255,255],
+  137: [6,1,255,255,255],
+  146: [2,2,255,255,255],
+  153: [9,1,255,178,64],
+  157: [2,2,255,255,255],
+  158: [2,2,255,255,255],
+  164: [5,2,255,255,255],
+  169: [2,2,255,64,64],
+  171: [4,1,255,255,255],
+  184: [4,1,178,178,178],
+  185: [2,2,255,64,64],
+  186: [9,1,255,255,255],
+  187: [2,2,255,255,255],
+  214: [2,1,255,210,210],
+  215: [3,3,255,255,255],
+  216: [3,3,255,255,255],
+  221: [3,1,255,255,255],
+  222: [3,1,255,255,255],
+  223: [6,1,255,193,103],
+  225: [6,1,255,64,64],
+  226: [6,1,255,64,64],
+  227: [6,1,255,64,64],
+})
+
+
+export interface MonsterLightConfig {
+  readonly radius: number
+  readonly intensity: number
+  readonly r: number
+  readonly g: number
+  readonly b: number
+}
+
+export interface ObjectLightConfig {
+  readonly radius: number
+  readonly intensity: number
+  readonly r: number
+  readonly g: number
+  readonly b: number
+  readonly flicker: number
+}
+
+export interface MissileLightConfig {
+  readonly radius: number
+  readonly intensity: number
+  readonly r: number
+  readonly g: number
+  readonly b: number
+  readonly flicker: number
+}
+
+export interface OverlayLightConfig {
+  readonly radius: number
+  readonly initRadius: number
+  readonly intensity: number
+  readonly r: number
+  readonly g: number
+  readonly b: number
+}
+
+export function getMonsterLightConfig(monsterId: string): MonsterLightConfig | null {
+  const entry = CANONICAL_MONSTER_LIGHTS[monsterId.trim().toLowerCase()]
+  if (!entry) return null
+  return {
+    radius: entry[0],
+    intensity: 255,
+    r: entry[1],
+    g: entry[2],
+    b: entry[3],
+  }
+}
+
+export function getObjectLightConfig(objectId: number, mode?: number): ObjectLightConfig | null {
+  const entry = CANONICAL_OBJECT_LIGHTS[objectId]
+  if (!entry) return null
+  const [lits, r, g, b, flicker] = entry
+  let radius = 0
+  if (mode !== undefined && mode >= 0 && mode < lits.length) {
+    radius = lits[mode] ?? 0
+  } else {
+    radius = (lits[1] ?? 0) > 0 ? (lits[1] ?? 0) : ((lits[2] ?? 0) > 0 ? (lits[2] ?? 0) : Math.max(...lits))
+  }
+  if (radius <= 0) return null
+  return {
+    radius,
+    intensity: 255,
+    r,
+    g,
+    b,
+    flicker,
+  }
+}
+
+const MISSILE_LIGHT_BY_ID: Map<number, readonly [id: number, radius: number, r: number, g: number, b: number, flicker: number]> = (() => {
+  const map = new Map<number, readonly [id: number, radius: number, r: number, g: number, b: number, flicker: number]>()
+  for (const entry of Object.values(CANONICAL_MISSILE_LIGHTS)) {
+    map.set(entry[0], entry)
+  }
+  return map
+})()
+
+export function getMissileLightConfig(idOrName: string | number): MissileLightConfig | null {
+  let entry: readonly [id: number, radius: number, r: number, g: number, b: number, flicker: number] | undefined
+  if (typeof idOrName === 'number') {
+    entry = MISSILE_LIGHT_BY_ID.get(idOrName)
+  } else {
+    entry = CANONICAL_MISSILE_LIGHTS[idOrName.trim().toLowerCase()]
+  }
+  if (!entry) return null
+  return {
+    radius: entry[1],
+    intensity: 255,
+    r: entry[2],
+    g: entry[3],
+    b: entry[4],
+    flicker: entry[5],
+  }
+}
+
+export function getOverlayLightConfig(overlayId: number): OverlayLightConfig | null {
+  const entry = CANONICAL_OVERLAY_LIGHTS[overlayId]
+  if (!entry) return null
+  return {
+    radius: entry[0],
+    initRadius: entry[1],
+    intensity: 255,
+    r: entry[2],
+    g: entry[3],
+    b: entry[4],
+  }
+}
+
diff --git a/src/client/scene/missile-overlay-renderer.ts b/src/client/scene/missile-overlay-renderer.ts
index 1455b58..e95e6b8 100644
--- a/src/client/scene/missile-overlay-renderer.ts
+++ b/src/client/scene/missile-overlay-renderer.ts
@@ -7,7 +7,6 @@ import {
 import type { AtlasFrame } from '../render/atlas.ts'
 import {
   LightningTrailManager,
-  drawElectricBoltFallback,
 } from '../render/missile-renderer.ts'
 import {
   MISSILE_METAS,
@@ -29,7 +28,6 @@ export {
   LightningTrailManager,
   MISSILE_METAS,
   OVERLAY_METAS,
-  drawElectricBoltFallback,
   getMissileTxtData,
   velocityToDccDirection,
   type MissileFrameTuple,
diff --git a/src/common/drlg/light-grid.ts b/src/common/drlg/light-grid.ts
index 9f8ca93..91d4728 100644
--- a/src/common/drlg/light-grid.ts
+++ b/src/common/drlg/light-grid.ts
@@ -65,7 +65,7 @@ export interface LightSource {
   /** Blue channel [0..255]. */
   readonly blue: number
   /** Optional flicker perturbation flag or offset. */
-  readonly flicker?: number
+  readonly flicker?: number | undefined
 }
 
 /**
diff --git a/tests/issue-606-614-621-parity.test.ts b/tests/issue-606-614-621-parity.test.ts
new file mode 100644
index 0000000..a519425
--- /dev/null
+++ b/tests/issue-606-614-621-parity.test.ts
@@ -0,0 +1,231 @@
+import { describe, it, expect } from 'vitest'
+import {
+  applyLightingInputs,
+  CANONICAL_MONSTER_LIGHTS,
+  CANONICAL_OBJECT_LIGHTS,
+  CANONICAL_MISSILE_LIGHTS,
+  CANONICAL_OVERLAY_LIGHTS,
+  getMonsterLightConfig,
+  getObjectLightConfig,
+  getMissileLightConfig,
+  getOverlayLightConfig,
+} from '../src/client/scene/lighting-presets.ts'
+import type { CollisionGrid } from '../src/common/world/d2map.ts'
+import { LightGrid, LIGHT_GRID_SIZE } from '../src/common/drlg/light-grid.ts'
+import {
+  velocityToDccDirection,
+  pointsToDccDirection,
+} from '../src/client/render/missiles-meta.ts'
+import {
+  fragmentShaderSource,
+} from '../src/client/render/renderer.ts'
+
+describe('Issue #606: Data-Driven Point Lights & Authentic 1.13c Player Radius', () => {
+  const mockCollision: CollisionGrid = {
+    cellsX: 10,
+    cellsY: 10,
+    gridWidth: 50,
+    gridHeight: 50,
+    originX: 0,
+    originY: 0,
+    blocked: new Uint8Array(2500),
+    collisionMasks: new Uint16Array(2500),
+  } as unknown as CollisionGrid
+
+  it('provides base 1.13c player light radius of 11 sub-tiles with pure white color', () => {
+    const lightGrid = new LightGrid()
+    let appliedLighting: any = null
+    const renderer = {
+      setLighting: (params: any) => {
+        appliedLighting = params
+      },
+    }
+
+    applyLightingInputs(
+      {
+        collisionGrid: mockCollision,
+        playerSubTile: { x: 50, y: 50 },
+        pointLights: [],
+        preset: 'auto',
+        levelId: 1,
+        tick: 0,
+        environmentIntensity: 100,
+      },
+      { lightGrid, renderer },
+    )
+
+    expect(appliedLighting).not.toBeNull()
+    // Player center cell is (24, 24)
+    const centerIdx = 24 * LIGHT_GRID_SIZE + 24
+    const intensity = lightGrid.intensity[centerIdx]
+    expect(intensity).toBeGreaterThan(0)
+  })
+
+  it('adds player light radius bonus correctly', () => {
+    const gridNoBonus = new LightGrid()
+    const gridWithBonus = new LightGrid()
+    const renderer = { setLighting: () => {} }
+
+    applyLightingInputs(
+      {
+        collisionGrid: mockCollision,
+        playerSubTile: { x: 50, y: 50 },
+        pointLights: [],
+        preset: 'auto',
+        levelId: 1,
+        tick: 0,
+        playerLightRadiusBonus: 0,
+        environmentIntensity: 0,
+      },
+      { lightGrid: gridNoBonus, renderer },
+    )
+
+    applyLightingInputs(
+      {
+        collisionGrid: mockCollision,
+        playerSubTile: { x: 50, y: 50 },
+        pointLights: [],
+        preset: 'auto',
+        levelId: 1,
+        tick: 0,
+        playerLightRadiusBonus: 5,
+        environmentIntensity: 0,
+      },
+      { lightGrid: gridWithBonus, renderer },
+    )
+
+    // Check cells 2 cells away from player center (24, 24) -> (26, 24)
+    const targetIdx = 24 * LIGHT_GRID_SIZE + 26
+    const intensityNoBonus = gridNoBonus.intensity[targetIdx]!
+    const intensityWithBonus = gridWithBonus.intensity[targetIdx]!
+
+    expect(intensityWithBonus).toBeGreaterThanOrEqual(intensityNoBonus)
+  })
+
+  it('preserves true pitch-black darkness when ambient environment intensity is 0', () => {
+    const lightGrid = new LightGrid()
+    let appliedLighting: any = null
+    const renderer = {
+      setLighting: (params: any) => {
+        appliedLighting = params
+      },
+    }
+
+    applyLightingInputs(
+      {
+        collisionGrid: mockCollision,
+        playerSubTile: { x: 50, y: 50 },
+        pointLights: [],
+        preset: 'auto',
+        levelId: 1,
+        tick: 0,
+        environmentIntensity: 0,
+        environmentColor: [20, 20, 20],
+      },
+      { lightGrid, renderer },
+    )
+
+    expect(appliedLighting.ambient[0]).toBe(0)
+    expect(appliedLighting.ambient[1]).toBe(0)
+    expect(appliedLighting.ambient[2]).toBe(0)
+  })
+
+  it('includes canonical 1.13c static tables for lit entities', () => {
+    expect(Object.keys(CANONICAL_MONSTER_LIGHTS).length).toBeGreaterThanOrEqual(80)
+    expect(Object.keys(CANONICAL_OBJECT_LIGHTS).length).toBeGreaterThanOrEqual(150)
+    expect(Object.keys(CANONICAL_MISSILE_LIGHTS).length).toBeGreaterThanOrEqual(100)
+    expect(Object.keys(CANONICAL_OVERLAY_LIGHTS).length).toBeGreaterThanOrEqual(40)
+
+    // Andariel has a lit config in monstats2
+    const andariel = getMonsterLightConfig('andariel')
+    expect(andariel).toBeDefined()
+    expect(andariel?.radius).toBeGreaterThan(0)
+
+    // Mephisto has a lit config in monstats2
+    const mephisto = getMonsterLightConfig('mephisto')
+    expect(mephisto).toBeDefined()
+    expect(mephisto?.radius).toBeGreaterThan(0)
+
+    // Firebolt missile (missiles.txt id 58) has a lit config
+    const firebolt = getMissileLightConfig('firebolt')
+    expect(firebolt).toBeDefined()
+    expect(firebolt?.radius).toBe(7)
+    expect(firebolt?.r).toBe(255)
+    const fireboltById = getMissileLightConfig(58)
+    expect(fireboltById?.radius).toBe(7)
+
+    // Torch / campfire object
+    const campfire = getObjectLightConfig(14)
+    expect(campfire).toBeDefined()
+
+    // Overlay lookup
+    const overlay = getOverlayLightConfig(1)
+    expect(overlay).toBeDefined()
+  })
+
+  it('processes point lights with optional flicker into lightGrid', () => {
+    const lightGrid = new LightGrid()
+    const renderer = { setLighting: () => {} }
+
+    applyLightingInputs(
+      {
+        collisionGrid: mockCollision,
+        playerSubTile: { x: 50, y: 50 },
+        pointLights: [
+          {
+            subTileX: 60,
+            subTileY: 60,
+            radius: 10,
+            intensity: 200,
+            r: 255,
+            g: 100,
+            b: 50,
+            flicker: 1,
+          },
+        ],
+        preset: 'auto',
+        levelId: 1,
+        tick: 0,
+        environmentIntensity: 0,
+      },
+      { lightGrid, renderer },
+    )
+
+    const cellX = Math.floor((60 - lightGrid.originSubX) / 8)
+    const cellY = Math.floor((60 - lightGrid.originSubY) / 8)
+    const cellIdx = cellY * LIGHT_GRID_SIZE + cellX
+    expect(lightGrid.intensity[cellIdx]).toBeGreaterThan(0)
+    expect(lightGrid.red[cellIdx]).toBe(255)
+  })
+})
+
+describe('Issue #614: Elevation-Aware Shaders & Linear Dynamic Light', () => {
+  it('uses authentic linear dynamic lighting without arbitrary non-linear curve in fragment shader', () => {
+    const source = fragmentShaderSource(8)
+    expect(source).toContain('vec3 dynamicLight = lightSample.rgb;')
+    expect(source).not.toContain('0.22 + 0.78 * lightSample.a')
+  })
+})
+
+describe('Issue #621: Dead Code Cleanup & Canonical Direction Mapping', () => {
+  it('pointsToDccDirection maps positions to 0-63 DCC frames', () => {
+    // South in world coordinates (dx > 0, dy > 0): dir64 = 0 -> DCC-16 index 4
+    const south = pointsToDccDirection(0, 0, 10, 10, 16)
+    expect(south).toBe(4)
+
+    // Result is always a valid DCC direction within range
+    const anyDir = pointsToDccDirection(10, 20, 50, 40, 16)
+    expect(anyDir).toBeGreaterThanOrEqual(0)
+    expect(anyDir).toBeLessThan(16)
+  })
+
+  it('velocityToDccDirection maps velocity components to valid DCC frames', () => {
+    // South velocity (vx = 0, vy > 0): DCC-16 index 4
+    const south = velocityToDccDirection(0, 10, 16)
+    expect(south).toBe(4)
+
+    const east = velocityToDccDirection(10, 0, 16)
+    expect(east).toBeGreaterThanOrEqual(0)
+    expect(east).toBeLessThan(16)
+  })
+})