chore(release): 4.5.0 [skip ci]

## [4.5.0](https://github.com/antialias/soroban-abacus-flashcards/compare/v4.4.15...v4.5.0) (2025-10-18)

### Features

* **complement-race:** add infinite win condition for Steam Sprint mode ([d8fdfee](d8fdfeef74))

CHANGELOG.md

@@ -1,3 +1,17 @@
+## [4.5.0](https://github.com/antialias/soroban-abacus-flashcards/compare/v4.4.15...v4.5.0) (2025-10-18)
+
+
+### Features
+
+* **complement-race:** add infinite win condition for Steam Sprint mode ([d8fdfee](https://github.com/antialias/soroban-abacus-flashcards/commit/d8fdfeef74a5d3bb9684254af1c9d64d264b46ad))
+
+## [4.4.15](https://github.com/antialias/soroban-abacus-flashcards/compare/v4.4.14...v4.4.15) (2025-10-18)
+
+
+### Bug Fixes
+
+* **complement-race:** track previous position to detect route threshold crossing ([a6c20aa](https://github.com/antialias/soroban-abacus-flashcards/commit/a6c20aab3b245d9893808d188d16a35ab80cfca9))
+
 ## [4.4.14](https://github.com/antialias/soroban-abacus-flashcards/compare/v4.4.13...v4.4.14) (2025-10-18)
 
 

apps/web/src/app/arcade/complement-race/hooks/useSteamJourney.ts

@@ -45,6 +45,7 @@ export function useSteamJourney() {
   const routeExitThresholdRef = useRef<number>(107) // Default for 1 car: 100 + 7
   const missedPassengersRef = useRef<Set<string>>(new Set()) // Track which passengers have been logged as missed
   const pendingBoardingRef = useRef<Set<string>>(new Set()) // Track passengers with pending boarding requests across frames
+  const previousTrainPositionRef = useRef<number>(0) // Track previous position to detect threshold crossings
 
   // Initialize game start time
   useEffect(() => {
@@ -78,6 +79,7 @@ export function useSteamJourney() {
   useEffect(() => {
     pendingBoardingRef.current.clear()
     missedPassengersRef.current.clear()
+    previousTrainPositionRef.current = 0 // Reset previous position for new route
   }, [state.currentRoute])
 
   // Momentum decay and position update loop
@@ -292,10 +294,11 @@ export function useSteamJourney() {
 
       // Check for route completion (entire train exits tunnel)
       const ENTIRE_TRAIN_EXIT_THRESHOLD = routeExitThresholdRef.current
+      const previousPosition = previousTrainPositionRef.current
 
       if (
         trainPosition >= ENTIRE_TRAIN_EXIT_THRESHOLD &&
-        state.trainPosition < ENTIRE_TRAIN_EXIT_THRESHOLD
+        previousPosition < ENTIRE_TRAIN_EXIT_THRESHOLD
       ) {
         // Play celebration whistle
         playSound('train_whistle', 0.6)
@@ -305,6 +308,9 @@ export function useSteamJourney() {
 
         // Auto-advance to next route
         const nextRoute = state.currentRoute + 1
+        console.log(
+          `🏁 ROUTE COMPLETE: Train crossed exit threshold (${trainPosition.toFixed(1)} >= ${ENTIRE_TRAIN_EXIT_THRESHOLD}). Advancing to Route ${nextRoute}`
+        )
         dispatch({
           type: 'START_NEW_ROUTE',
           routeNumber: nextRoute,
@@ -313,6 +319,9 @@ export function useSteamJourney() {
 
         // Note: New passengers will be generated by the server when it handles START_NEW_ROUTE
       }
+
+      // Update previous position for next frame
+      previousTrainPositionRef.current = trainPosition
     }, UPDATE_INTERVAL)
 
     return () => clearInterval(interval)

apps/web/src/arcade-games/complement-race/Validator.ts

@@ -812,6 +812,11 @@ export class ComplementRaceValidator
   private checkWinCondition(state: ComplementRaceState): string | null {
     const { config, players } = state
 
+    // Infinite mode: Never end the game
+    if (config.winCondition === 'infinite') {
+      return null
+    }
+
     // Practice mode: First to reach goal
     if (config.style === 'practice') {
       for (const [playerId, player] of Object.entries(players)) {

apps/web/src/arcade-games/complement-race/index.tsx

@@ -41,7 +41,7 @@ const defaultConfig: ComplementRaceConfig = {
   passengerCount: 6,
   maxConcurrentPassengers: 3,
   raceGoal: 20,
-  winCondition: 'route-based',
+  winCondition: 'infinite', // Sprint mode is infinite by default (Steam Sprint)
   routeCount: 3,
   targetScore: 100,
   timeLimit: 300,

apps/web/src/lib/arcade/game-configs.ts

@@ -89,7 +89,7 @@ export interface ComplementRaceGameConfig {
   raceGoal: number // questions to win practice mode (default 20)
 
   // Win Conditions
-  winCondition: 'route-based' | 'score-based' | 'time-based'
+  winCondition: 'route-based' | 'score-based' | 'time-based' | 'infinite'
   targetScore?: number // for score-based (e.g., 100)
   timeLimit?: number // for time-based (e.g., 300 seconds)
   routeCount?: number // for route-based (e.g., 3 routes)
@@ -171,7 +171,7 @@ export const DEFAULT_COMPLEMENT_RACE_CONFIG: ComplementRaceGameConfig = {
   raceGoal: 20,
 
   // Win conditions
-  winCondition: 'route-based',
+  winCondition: 'infinite', // Sprint mode is infinite by default (Steam Sprint)
   routeCount: 3,
   targetScore: 100,
   timeLimit: 300,

package.json

@@ -1,6 +1,6 @@
 {
   "name": "soroban-monorepo",
-  "version": "4.4.14",
+  "version": "4.5.0",
   "private": true,
   "description": "Beautiful Soroban Flashcard Generator - Monorepo",
   "workspaces": [