refactor: remove the motorcycle

Phase 2 of turning the game into the company landing page.

- Delete the Apache motorcycle model, its BIKE handling spec, the
  motorcycle row in the factory yard, rider and lean animation, and its
  prompt and dialogue strings.
- The garage now holds cars only; the oriented-box collision, traffic
  lane checks and other vehicles are unchanged.
- Rework the vehicle tests to cover gaps with a car instead of a bike,
  and add a check that no motorcycle code or text remains.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs/02-game-rules.md

@@ -11,13 +11,13 @@
 - موبایل joystick و دکمه‌های F، E و toggle دویدن دارد. E موبایل در مرحلهٔ ready کارت می‌کشد.
 - سرعت هدف پیاده ۳٫۴ و دویدن ۶٫۵ متر/ثانیه با نرم‌سازی است. برخورد دایره‌ای شخصیت شعاع ۱ متر دارد. مرز جهان با فاصلهٔ ۱۵ متر محدود می‌شود.
 
-## ماشین و موتور
+## ماشین‌ها
 
-همهٔ وسیله‌های حیاط کارخانه مشکی‌اند و سوارشدنی: بی‌ام‌وی خانواده کنار نقطهٔ شروع، لامبورگینی، مزدا و نیسان در پارکینگ کارکنان، شش موتور آپاچی کنار دفتر، و بوگاتی آقای محمدی پس از اینکه پارک کرد. هر ماشین ترافیک شهر هم با F گرفته می‌شود و تا reset همان‌جا که رها شده می‌ماند. کامیون بارگیری تزئینی است و سوار نمی‌شود. همه در `runtime/garage.js` نگه‌داری می‌شوند.
+همهٔ وسیله‌های حیاط کارخانه مشکی‌اند و سوارشدنی: بی‌ام‌وی خانواده کنار نقطهٔ شروع، لامبورگینی، مزدا و نیسان در پارکینگ کارکنان، و بوگاتی آقای محمدی پس از اینکه پارک کرد. هر ماشین ترافیک شهر هم با F گرفته می‌شود و تا reset همان‌جا که رها شده می‌ماند. کامیون بارگیری تزئینی است و سوار نمی‌شود. همه در `runtime/garage.js` نگه‌داری می‌شوند.
 
 سوارشدن در فاصلهٔ حداکثر ۴٫۵ متر و خارج پرداخت/مشغولی؛ پیاده‌شدن در قدرمطلق سرعت حداکثر ۳ متر/ثانیه. UI پیشنهاد پیاده‌شدن را با شرط محدودتر سرعت زیر ۱ و دستگاه نزدیک نشان می‌دهد. سمت خروج راننده بررسی برخورد می‌شود.
 
-ثابت‌های `CAR`: سقف جلو ۵۵٫۶ متر/ثانیه (حدود ۲۰۰ km/h)، عقب ۶، شتاب ۹٫۵، ترمز ۱۴، drag برابر ۱٫۶، فرمان حداکثر ۰٫۵۵ رادیان، wheelBase برابر ۲٫۷. فرمان در سرعت بالا محدودتر می‌شود. برخورد دیوار دو دایرهٔ جلو/عقب و حرکت زیرگام دارد. ثابت‌های `BIKE`: سقف ۳۶٫۱ (حدود ۱۳۰ km/h)، شتاب ۱۱، wheelBase برابر ۱٫۳۵؛ موتور در پیچ خم می‌شود. برخورد بین وسیله‌ها با جعبهٔ جهت‌دار به اندازهٔ واقعی مدل (SAT در `world/vehicleCollision.js`) است، پس فقط وقتی بدنه‌ها واقعاً به هم برسند سرعت کم می‌شود و موتور می‌تواند لایی بکشد. کاهش سرعت به زاویهٔ برخورد بستگی دارد: شاخ‌به‌شاخ ۶۰٪، مالیدن کناری تقریباً هیچ. ترافیک فقط برای چیزی که واقعاً در عرض خطش باشد ترمز می‌کند و NPC پس از تماس طولانی حذف/بازپدید می‌شود. جریمهٔ نقدی، خسارت قابل تعمیر و سوخت وجود ندارد.
+ثابت‌های `CAR`: سقف جلو ۵۵٫۶ متر/ثانیه (حدود ۲۰۰ km/h)، عقب ۶، شتاب ۹٫۵، ترمز ۱۴، drag برابر ۱٫۶، فرمان حداکثر ۰٫۵۵ رادیان، wheelBase برابر ۲٫۷. فرمان در سرعت بالا محدودتر می‌شود. برخورد دیوار دو دایرهٔ جلو/عقب و حرکت زیرگام دارد. برخورد بین وسیله‌ها با جعبهٔ جهت‌دار به اندازهٔ واقعی مدل (SAT در `world/vehicleCollision.js`) است، پس فقط وقتی بدنه‌ها واقعاً به هم برسند سرعت کم می‌شود و ماشین از هر فاصله‌ای که واقعاً جا شود رد می‌شود. کاهش سرعت به زاویهٔ برخورد بستگی دارد: شاخ‌به‌شاخ ۶۰٪، مالیدن کناری تقریباً هیچ. ترافیک فقط برای چیزی که واقعاً در عرض خطش باشد ترمز می‌کند و NPC پس از تماس طولانی حذف/بازپدید می‌شود. جریمهٔ نقدی، خسارت قابل تعمیر و سوخت وجود ندارد.
 
 ## پول و محصول
 

docs/03-architecture.md

@@ -18,8 +18,7 @@ JavaScript ES Modules، Three.js/WebGL، Vite، HTML و CSS فارسی RTL و Ca
 | staff.js | مدل کارکنان مفصلی و crew به شکل InstancedMesh |
 | car-models.js | سدان خانواده، کامیون و helperهای مشترک بدنه |
 | luxuryCars.js | ماشین‌های لوکس مشکی به سبک بوگاتی، لامبورگینی، مزدا و نیسان |
-| motorcycle.js | موتور آپاچی با راکب و بدنهٔ خم‌شونده |
+| vehicle.js | state و فیزیک آرکید ماشین (`CAR`) |
-| vehicle.js | state و فیزیک آرکید ماشین (`CAR`) و موتور (`BIKE`) |
 | vehicleCollision.js | برخورد جعبهٔ جهت‌دار وسیله‌ها و هل‌دادن پیاده از وسیلهٔ پارک‌شده |
 | garage.js | فهرست وسیله‌های سوارشدنی، سوار/پیاده، برخورد رانندگی و reset |
 | traffic.js | ماشین‌های NPC، spawn و حرکت روی شبکهٔ اصلی و one-way داده |

src/constants/vehicles.js

@@ -15,6 +15,3 @@ export const VEHICLE_LABELS = strings.vehicles;
 // Brands parked in the staff bays, in bay order. Mr Mohammadi arrives in the Bugatti.
 export const STAFF_CAR_BRANDS = ['lamborghini', 'mazda', 'nissan'];
 export const MANAGER_CAR_BRAND = 'bugatti';
-
-// Apache motorcycles lined up in the yard.
-export const MOTORCYCLE_COUNT = 6;

src/game/models/factory.js

@@ -2,7 +2,7 @@ import * as THREE from 'three';
 import { createVendingMachine } from './vending.js';
 import { createTruck } from './carModels.js';
 import { createLuxuryCar } from './luxuryCars.js';
-import { MANAGER_CAR_BRAND, MOTORCYCLE_COUNT, VEHICLE_BLACK } from '../../constants/vehicles.js';
+import { MANAGER_CAR_BRAND, VEHICLE_BLACK } from '../../constants/vehicles.js';
 import { createPerson, createCrew, nameTag } from './staff.js';
 import { FACTORY } from '../../constants/locations.js';
 import { textTexture } from './textures.js';
@@ -1581,15 +1581,10 @@ function factoryBuildGeometry12(build) {
  * @returns {*} Operation result, when applicable.
  */
 function factoryBuildGeometry13(build) {
-  // Bay centres for the staff cars and the motorcycle row; the garage puts drivable vehicles there.
+  // Bay centres for the staff cars; the garage parks drivable cars there.
   const heading = build.worldHeading(0, -1);
   build.parking = {
     cars: [58, 62, 66].map((u) => ({ ...build.toWorld(u, -19), heading })),
-    // Motorcycles barely reverse, so they stand facing out towards the driveway.
-    bikes: Array.from({ length: MOTORCYCLE_COUNT }, (_, i) => ({
-      ...build.toWorld(36.6 + i * 1.1, -19.5),
-      heading: build.worldHeading(0, 1),
-    })),
   };
 
   // ---------- The manager arrives in his Bugatti ----------

src/game/models/motorcycle.js

@@ -1,155 +0,0 @@
-import * as THREE from 'three';
-import { VEHICLE_BLACK } from '../../constants/vehicles.js';
-import { extrudeProfile, mat, measureFootprint } from './carModels.js';
-import { createPerson } from './staff.js';
-
-// Naked street bike in the style of an Apache RTR: sculpted tank, split seat, angular tail and a
-// short underbelly exhaust. 2 m long, faces local +X. `wheels` is [rear, front]; `body` is the
-// group that leans into corners; `rider` sits on it and is shown only while the bike is ridden.
-
-const WHEEL_RADIUS = 0.31;
-const WHEEL_X = [-0.67, 0.67];
-
-/**
- * Builds one spoked wheel that spins about local z.
- * @param {THREE.Material} rubber - Tyre material.
- * @param {THREE.Material} rim - Rim material.
- * @returns {THREE.Group} The wheel.
- */
-function createWheel(rubber, rim) {
-  const wheel = new THREE.Group();
-  const tyre = new THREE.Mesh(new THREE.TorusGeometry(WHEEL_RADIUS - 0.05, 0.05, 8, 24), rubber);
-  tyre.castShadow = true;
-  wheel.add(tyre);
-  for (let i = 0; i < 3; i++) {
-    const spoke = new THREE.Mesh(new THREE.BoxGeometry(0.48, 0.035, 0.03), rim);
-    spoke.rotation.z = (i * Math.PI) / 3;
-    wheel.add(spoke);
-  }
-  return wheel;
-}
-
-/**
- * Adds a box to a group.
- * @param {THREE.Group} group - Parent group.
- * @param {THREE.Material} material - Material.
- * @param {{size: number[], at: number[], tilt?: number}} placement - Size, centre and z rotation.
- */
-function box(group, material, { size, at, tilt = 0 }) {
-  const mesh = new THREE.Mesh(new THREE.BoxGeometry(...size), material);
-  mesh.position.set(...at);
-  mesh.rotation.z = tilt;
-  mesh.castShadow = true;
-  group.add(mesh);
-}
-
-/**
- * Adds the tank, seat, tail, engine and exhaust.
- * @param {THREE.Group} body - Leaning body group.
- * @param {object} kit - Materials.
- */
-function addBodywork(body, kit) {
-  const tank = [
-    [0.55, 0.82],
-    [0.45, 1.03],
-    [0.05, 1.0],
-    [-0.12, 0.86],
-  ];
-  body.add(extrudeProfile(tank, 0.38, kit.paint, 0.05));
-  const tail = [
-    [-0.55, 0.86],
-    [-0.98, 1.04],
-    [-1.0, 0.98],
-    [-0.6, 0.82],
-  ];
-  body.add(extrudeProfile(tail, 0.22, kit.paint, 0.03));
-  box(body, kit.seat, { size: [0.5, 0.08, 0.26], at: [-0.35, 0.93, 0] });
-  box(body, kit.accent, { size: [0.32, 0.03, 0.39], at: [0.3, 0.9, 0], tilt: 0.2 });
-  box(body, kit.engine, { size: [0.46, 0.34, 0.3], at: [0.05, 0.52, 0] });
-  box(body, kit.engine, { size: [0.7, 0.05, 0.08], at: [-0.33, 0.38, 0], tilt: 0.12 });
-  const exhaust = new THREE.Mesh(new THREE.CylinderGeometry(0.06, 0.07, 0.38, 10), kit.chrome);
-  exhaust.rotation.z = Math.PI / 2 - 0.15;
-  exhaust.position.set(-0.05, 0.3, 0.12);
-  body.add(exhaust);
-}
-
-/**
- * Adds the fork, handlebar, headlight and tail light.
- * @param {THREE.Group} body - Leaning body group.
- * @param {object} kit - Materials.
- */
-function addFrontAndLights(body, kit) {
-  for (const z of [0.08, -0.08])
-    box(body, kit.chrome, { size: [0.04, 0.72, 0.04], at: [0.58, 0.65, z], tilt: 0.42 });
-  const bar = new THREE.Mesh(new THREE.CylinderGeometry(0.02, 0.02, 0.7, 8), kit.engine);
-  bar.rotation.x = Math.PI / 2;
-  bar.position.set(0.44, 1.07, 0);
-  body.add(bar);
-  box(body, kit.paint, { size: [0.14, 0.2, 0.24], at: [0.62, 0.98, 0], tilt: -0.3 });
-  box(body, kit.head, { size: [0.04, 0.08, 0.16], at: [0.7, 0.96, 0], tilt: -0.3 });
-  box(body, kit.tail, { size: [0.03, 0.05, 0.12], at: [-1.0, 0.98, 0] });
-  box(body, kit.paint, { size: [0.3, 0.03, 0.14], at: [0.68, 0.62, 0], tilt: -0.5 });
-}
-
-/**
- * Creates the seated rider in a black jacket and helmet, holding the handlebar.
- * @returns {object} Person from createPerson.
- */
-function createRider() {
-  const rider = createPerson({ top: '#151515', bottom: '#28303a', shoes: '#1a1a1a' });
-  const helmet = new THREE.Mesh(
-    new THREE.SphereGeometry(0.15, 16, 12),
-    mat('#0d0d0f', { metalness: 0.6, roughness: 0.25 }),
-  );
-  helmet.position.set(0, 0.01, -0.01);
-  rider.head.add(helmet);
-  // Seated pose puts the pelvis 0.5 m up; lift it onto the 0.94 m seat, facing the bars (+x).
-  rider.pose('type');
-  rider.root.position.set(-0.32, 0.42, 0);
-  rider.root.rotation.y = Math.PI / 2;
-  rider.root.visible = false;
-  return rider;
-}
-
-/**
- * Creates the motorcycle's materials.
- * @param {string} color - Body paint colour.
- * @returns {object} Paint, trim and lamp materials.
- */
-function createBikeKit(color) {
-  return {
-    paint: mat(color, { metalness: 0.7, roughness: 0.25 }),
-    accent: mat('#c8171e', { metalness: 0.4, roughness: 0.35 }),
-    seat: mat('#151617', { roughness: 0.85 }),
-    engine: mat('#2b2e31', { metalness: 0.6, roughness: 0.45 }),
-    chrome: mat('#c9cdd1', { metalness: 0.9, roughness: 0.2 }),
-    head: mat('#eaf6ff', { emissive: '#cfe9ff', emissiveIntensity: 1.6 }),
-    tail: mat('#9e1410', { emissive: '#e0261c', emissiveIntensity: 0.9 }),
-  };
-}
-
-/**
- * Builds a black Apache-style motorcycle.
- * @param {string} color - Body paint colour.
- * @returns {{group: THREE.Group, body: THREE.Group, wheels: THREE.Group[], rider: object,
- * size: object}} The model and its footprint half extents (without the rider).
- */
-export function createMotorcycle(color = VEHICLE_BLACK) {
-  const kit = createBikeKit(color);
-  const group = new THREE.Group(),
-    body = new THREE.Group();
-  group.add(body);
-  addBodywork(body, kit);
-  addFrontAndLights(body, kit);
-  const rubber = mat('#151719', { roughness: 0.9 });
-  const wheels = WHEEL_X.map((x) => {
-    const wheel = createWheel(rubber, kit.engine);
-    wheel.position.set(x, WHEEL_RADIUS, 0);
-    body.add(wheel);
-    return wheel;
-  });
-  const size = measureFootprint(group);
-  const rider = createRider();
-  body.add(rider.root);
-  return { group, body, wheels, rider, size };
-}

src/game/runtime/garage.js

@@ -8,12 +8,11 @@ import {
 } from '../../constants/vehicles.js';
 import { createSportSedan, measureFootprint } from '../models/carModels.js';
 import { createLuxuryCar } from '../models/luxuryCars.js';
-import { createMotorcycle } from '../models/motorcycle.js';
 import { TRAFFIC_CAR } from '../systems/traffic.js';
-import { BIKE, CAR, createCar } from '../systems/vehicle.js';
+import { CAR, createCar } from '../systems/vehicle.js';
 import { boxOverlap, circleOutOfBox, vehicleBox } from '../world/vehicleCollision.js';
 
-// Every vehicle the player can drive: the family BMW, the staff cars, the Apache motorcycles,
+// Every vehicle the player can drive: the family BMW, the staff cars,
 // Mr Mohammadi's Bugatti once he has parked it, and any traffic car the player has taken over.
 // `context.vehicle` is the one in use (or last used); `context.car` is its moving state.
 
@@ -25,26 +24,22 @@ const WALKER_RADIUS = 0.45;
 const HEAD_ON_SPEED_KEPT = 0.4;
 // A traffic car the player keeps pushing against pulls away (respawns) after this many seconds.
 const TRAFFIC_GIVE_WAY = 0.8;
-// How far a motorcycle leans per radian of steering at speed, and the speed of full lean.
-const LEAN_PER_STEER = 0.8;
-const FULL_LEAN_SPEED = 12;
 
 /**
  * Adds a vehicle to the garage and the scene.
  * @param {object} context - Game context.
- * @param {{brand: string, kind: 'car' | 'bike', model: object, slot: object}} vehicle - Vehicle
+ * @param {{brand: string, model: object, slot: object}} vehicle - Vehicle
  * fields; `slot` is where it is parked on reset (null for vehicles that are not reset).
  * @returns {object} The garage record.
  */
-function addVehicle(context, { brand, kind, model, slot, ...extra }) {
+function addVehicle(context, { brand, model, slot, ...extra }) {
   const record = {
     brand,
-    kind,
     model,
     slot,
     label: VEHICLE_LABELS[brand],
-    // Handling from the kind, collision box from the model itself, so contact is exact.
+    // Car handling, with the collision box measured from the model itself so contact is exact.
-    spec: { ...(kind === 'bike' ? BIKE : CAR), ...model.size },
+    spec: { ...CAR, ...model.size },
     state: createCar(slot.x, slot.z, slot.heading),
     ...extra,
   };
@@ -93,20 +88,16 @@ export function createGarage(context) {
   const { car: familySlot, parking } = context.factory;
   addVehicle(context, {
     brand: 'bmw',
-    kind: 'car',
     model: withSize(createSportSedan(VEHICLE_BLACK)),
     slot: familySlot,
   });
   STAFF_CAR_BRANDS.forEach((brand, i) =>
     addVehicle(context, {
       brand,
-      kind: 'car',
       model: createLuxuryCar(brand),
       slot: parking.cars[i],
     }),
   );
-  for (const slot of parking.bikes)
-    addVehicle(context, { brand: 'apache', kind: 'bike', model: createMotorcycle(), slot });
   setActive(context, context.garage.vehicles[0]);
 }
 
@@ -125,7 +116,6 @@ export function resetGarage(context) {
   for (const record of garage.vehicles) {
     record.state = createCar(record.slot.x, record.slot.z, record.slot.heading);
     placeModel(record);
-    if (record.model.rider) record.model.rider.root.visible = false;
   }
   setActive(context, garage.vehicles[0]);
 }
@@ -145,7 +135,6 @@ export function updateGarage(context) {
   const heading = Math.atan2(-(nose.z - at.z), nose.x - at.x);
   const record = addVehicle(context, {
     brand: MANAGER_CAR_BRAND,
-    kind: 'car',
     model: manager.model,
     slot: { x: at.x, z: at.z, heading },
   });
@@ -187,7 +176,7 @@ export function takeRide(context, { record, npc }) {
   if (npc) {
     const slot = { x: npc.x, z: npc.z, heading: npc.model.group.rotation.y };
     const model = { ...context.traffic.adopt(npc), size: TRAFFIC_CAR };
-    record = addVehicle(context, { brand: 'traffic', kind: 'car', model, slot });
+    record = addVehicle(context, { brand: 'traffic', model, slot });
     // Taken traffic cars stay where they are left until the next reset, which removes them.
     record.slot = null;
   }
@@ -196,25 +185,18 @@ export function takeRide(context, { record, npc }) {
 }
 
 /**
- * Updates the active vehicle's model: position, wheel spin and steering, motorcycle lean and rider.
+ * Updates the active vehicle's model: position, wheel spin and front-wheel steering.
  * @param {object} context - Game context.
  * @param {number} dt - Frame time in seconds.
  */
 export function syncActiveVehicle(context, dt) {
-  const { model, state, spec, kind } = context.vehicle;
+  const { model, state, spec } = context.vehicle;
   placeModel(context.vehicle);
-  const firstFront = kind === 'bike' ? 1 : 2;
+  // Wheels list the rear pair first, then the two front (steering) wheels.
   for (const [i, wheel] of model.wheels.entries()) {
     wheel.rotation.z -= (state.speed * dt) / spec.wheelRadius;
-    if (i >= firstFront) wheel.rotation.y = -state.steer;
+    if (i >= 2) wheel.rotation.y = -state.steer;
   }
-  if (kind !== 'bike') return;
-  const riding = context.mode === 'drive';
-  model.rider.root.visible = riding;
-  // Lean into the turn (towards local +z, the right-hand side, when steering right).
-  const speedShare = Math.min(1, Math.abs(state.speed) / FULL_LEAN_SPEED);
-  const lean = riding ? state.steer * LEAN_PER_STEER * speedShare * Math.sign(state.speed) : 0;
-  model.body.rotation.x += (lean - model.body.rotation.x) * Math.min(1, dt * 8);
 }
 
 /**

src/game/runtime/movement.js

@@ -49,18 +49,17 @@ function toggleCar(context) {
 }
 
 /**
- * Gets on or in the closest vehicle within reach, if there is one.
+ * Gets into the closest vehicle within reach, if there is one.
  * @param {object} context - Game context.
  */
 function getIn(context) {
   const ride = nearestRide(context);
   if (!ride) return;
-  const { kind } = takeRide(context, ride);
+  takeRide(context, ride);
   context.mode = 'drive';
-  context.cam.distance = Math.max(context.cam.distance, kind === 'bike' ? 6 : 8);
+  context.cam.distance = Math.max(context.cam.distance, 8);
   context.tone(320, 0.2, 0.05, 'square');
-  const line = kind === 'bike' ? strings.dialogue.bikeOn : strings.dialogue.carOn;
+  context.say('father', strings.dialogue.carOn);
-  context.say('father', line);
 }
 
 /**

src/game/runtime/navigationHud.js

@@ -205,7 +205,6 @@ export function refreshHUD(context) {
  */
 function modeLabel(context) {
   if (context.mode !== 'drive') return strings.common.walking;
-  if (context.vehicle.kind === 'bike') return strings.travel.onBike;
   return strings.travel.inVehicle(context.vehicle.label);
 }
 /**

src/game/runtime/runtimeSetup.js

@@ -427,7 +427,7 @@ export async function initializeFamily(context) {
  */
 export async function initializeSpawnCar(context) {
   // The family car waits in the factory yard right beside them, pointing at the gate; the staff
-  // cars and motorcycles are parked in front of the office.
+  // cars are parked in front of the office.
   createGarage(context);
   // ---------- Input ----------
   context.isTouch = matchMedia('(pointer: coarse)').matches;

src/game/systems/traffic.js

@@ -314,8 +314,8 @@ export function createTraffic(scene, data, count = 28) {
           const ox = o.x - car.x,
             oz = o.z - car.z,
             along = ox * fx + oz * fz;
-          // Only something that really overlaps the lane stops the car, so a motorcycle
+          // Only something that really overlaps the lane stops the car, so a car or walker
-          // filtering between two lanes doesn't bring traffic to a halt.
+          // beside the lane doesn't bring traffic to a halt.
           const reach =
             TRAFFIC_CAR.halfWidth + (o.halfWidth ?? DEFAULT_OBSTACLE_HALF_WIDTH) + PASSING_MARGIN;
           return along > 0 && along < 9 && Math.abs(ox * fz - oz * fx) < reach;

src/game/systems/vehicle.js

@@ -22,25 +22,6 @@ export const CAR = {
   ],
 };
 
-// Apache motorcycle: 130 km/h top speed, quick off the line, narrow enough to filter between cars.
-export const BIKE = {
-  maxSpeed: 36.1,
-  maxReverse: 1.5,
-  accel: 11,
-  brake: 13,
-  drag: 1.4,
-  maxSteer: 0.6,
-  wheelBase: 1.35,
-  radius: 0.6,
-  halfLength: 1.0,
-  halfWidth: 0.4,
-  wheelRadius: 0.31,
-  probes: [
-    { along: 0.55, radius: 0.42 },
-    { along: -0.55, radius: 0.42 },
-  ],
-};
-
 /**
  * Creates the moving state of a vehicle.
  * @param {number} x - World x.

src/game/world/vehicleCollision.js

@@ -1,5 +1,5 @@
 // Oriented-box collisions between vehicles, so two bodies only touch when their outlines really
-// meet. A narrow motorcycle can therefore pass between two cars with a hand's width to spare.
+// meet. A car can therefore pass through any gap it actually fits, without slowing down.
 
 /**
  * Builds the footprint box of a vehicle on the ground plane.

src/i18n/fa.js

@@ -104,7 +104,6 @@ export const strings = {
     metroPrefix: 'ایستگاه مترو ',
   },
   travel: {
-    onBike: 'روی موتور · F برای پیاده شدن',
     /** @type {(vehicle: string) => string} */
     inVehicle: (vehicle) => `در ${vehicle} · F برای پیاده شدن`,
   },
@@ -125,7 +124,6 @@ export const strings = {
     lamborghini: 'لامبورگینی',
     mazda: 'مزدا',
     nissan: 'نیسان',
-    apache: 'موتور آپاچی',
     traffic: 'ماشین',
   },
   map: {
@@ -287,7 +285,6 @@ export const strings = {
     targetClosed: (machine, hours) =>
       `${machine} الان بسته است (${hours}). از نقشه مقصد دیگری انتخاب کن.`,
     longWay: 'راه طولانیه؛ بهتره با ماشین بریم.',
-    bikeOn: 'کلاه ایمنی سرت باشه! با موتور می‌شه از لای ماشین‌ها رد شد.',
     carOn: 'کمربندها رو ببندیم! مسیر طلایی روی زمین راه رو نشون می‌ده.',
     stopFirst: 'اول نگه دار، بعد پیاده می‌شویم.',
     tooFastToBuy: 'داریم سریع حرکت می‌کنیم؛ اول بایستیم، بعد خرید کنیم.',

tests/vehicles.test.js

@@ -3,10 +3,8 @@ import assert from 'node:assert/strict';
 import { readFileSync } from 'node:fs';
 import { Scene } from 'three';
 import { boxOverlap, circleOutOfBox, vehicleBox } from '../src/game/world/vehicleCollision.js';
-import { BIKE, CAR, createCar, kmh, stepCar } from '../src/game/systems/vehicle.js';
 import { createTraffic, TRAFFIC_CAR } from '../src/game/systems/traffic.js';
 import { createLuxuryCar } from '../src/game/models/luxuryCars.js';
-import { createMotorcycle } from '../src/game/models/motorcycle.js';
 
 const data = JSON.parse(readFileSync(new URL('../src/data/mellat.json', import.meta.url)));
 
@@ -14,12 +12,12 @@ const data = JSON.parse(readFileSync(new URL('../src/data/mellat.json', import.m
 const leftCar = vehicleBox({ x: 0, z: -2.25, heading: 0 }, TRAFFIC_CAR);
 const rightCar = vehicleBox({ x: 0, z: 2.25, heading: Math.PI }, TRAFFIC_CAR);
 
-test('A motorcycle filters between two cars without touching them', () => {
+test('A car drives between two traffic cars without touching them', () => {
-  const bike = createMotorcycle();
+  const car = createLuxuryCar('mazda');
-  const between = vehicleBox({ x: 0, z: 0, heading: 0 }, bike.size);
+  const between = vehicleBox({ x: 0, z: 0, heading: 0 }, car.size);
   assert.equal(boxOverlap(between, leftCar), null);
   assert.equal(boxOverlap(between, rightCar), null);
-  // Regression: the old 3.4 m circle test counted this as a crash and stopped the rider.
+  // Regression: the old 3.4 m circle test counted this as a crash and stopped the driver.
   assert.ok(Math.hypot(0, 2.25) < 3.4);
 });
 
@@ -50,29 +48,13 @@ test('A walker is pushed out of a parked vehicle, even from inside it', () => {
   }
 });
 
-test('Motorcycles top out at 130 km/h and turn tighter than cars', () => {
+test('Luxury cars report footprints that match their size', () => {
-  const bike = createCar(0, 0, 0),
-    car = createCar(0, 0, 0);
-  for (let i = 0; i < 900; i++) stepCar(bike, { throttle: 1 }, 1 / 30, BIKE);
-  assert.equal(kmh(bike), 130);
-  bike.speed = car.speed = 8;
-  for (let i = 0; i < 15; i++) {
-    stepCar(bike, { steer: 1 }, 1 / 30, BIKE);
-    stepCar(car, { steer: 1 }, 1 / 30, CAR);
-  }
-  assert.ok(bike.heading < car.heading, 'the shorter wheelbase turns faster');
-});
-
-test('Luxury cars and the motorcycle report footprints that match their size', () => {
   for (const brand of ['bugatti', 'lamborghini', 'mazda', 'nissan']) {
     const model = createLuxuryCar(brand);
     assert.equal(model.wheels.length, 4, brand);
     assert.ok(model.size.halfLength > 2.1 && model.size.halfLength < 2.6, brand);
     assert.ok(model.size.halfWidth > 0.9 && model.size.halfWidth < 1.15, brand);
   }
-  const bike = createMotorcycle();
-  assert.equal(bike.wheels.length, 2);
-  assert.ok(bike.size.halfWidth < 0.45 && bike.size.halfLength < 1.1);
 });
 
 /**
@@ -87,7 +69,7 @@ function loneCar(traffic) {
   );
 }
 
-test('Traffic stops for what blocks its lane but keeps going past a filtering motorcycle', () => {
+test('Traffic stops for what blocks its lane but keeps going past what is beside it', () => {
   const traffic = createTraffic(new Scene(), data, 28),
     around = { x: -10008, z: -15049 };
   for (let i = 0; i < 200; i++) traffic.update(1 / 30, [], around);
@@ -103,10 +85,11 @@ test('Traffic stops for what blocks its lane but keeps going past a filtering mo
     halfWidth,
   });
   const before = car.d;
-  traffic.update(1 / 30, [at(0.5, BIKE.halfWidth)], around);
+  // A walker (0.45 m half width) in the lane stops the car; one at the lane edge does not.
-  assert.equal(car.d, before, 'a bike in the lane stops the car');
+  traffic.update(1 / 30, [at(0.5, 0.45)], around);
-  traffic.update(1 / 30, [at(1.8, BIKE.halfWidth)], around);
+  assert.equal(car.d, before, 'a walker in the lane stops the car');
-  assert.notEqual(car.d, before, 'a bike on the lane edge does not');
+  traffic.update(1 / 30, [at(1.8, 0.45)], around);
+  assert.notEqual(car.d, before, 'a walker on the lane edge does not');
 });
 
 test('Taking a traffic car hands its model to the player and refills the slot', () => {
@@ -119,3 +102,11 @@ test('Taking a traffic car hands its model to the player and refills the slot',
   assert.equal(car.model.group.parent, traffic.group);
   assert.equal(car.road, null, 'the slot respawns elsewhere later');
 });
+
+test('The motorcycle is gone from the game', () => {
+  const src = new URL('../src/', import.meta.url);
+  const vehicleSource = ['game/runtime/garage.js', 'game/systems/vehicle.js', 'i18n/fa.js']
+    .map((file) => readFileSync(new URL(file, src), 'utf8'))
+    .join('\n');
+  assert.doesNotMatch(vehicleSource, /motorcycle|BIKE|apache/i);
+});