feat: 게임 엔진에 Clock 인터페이스 및 관련 클래스 추가, 테스트 케이스 작성

app/game-engine/src/lifecycle/clock.ts

@@ -1,76 +1 @@
-import type { Clock } from './types.js';
-
-export class SystemClock implements Clock {
-    // 시스템 시간을 기준으로 동작하는 기본 시계.
-    nowMs(): number {
-        return Date.now();
-    }
-
-    async sleepMs(ms: number): Promise<void> {
-        if (ms <= 0) {
-            return;
-        }
-        await new Promise((resolve) => setTimeout(resolve, ms));
-    }
-}
-
-export class ManualClock implements Clock {
-    // 테스트에서 시간을 직접 이동시키는 수동 시계.
-    private currentMs: number;
-
-    constructor(initialMs = 0) {
-        this.currentMs = initialMs;
-    }
-
-    nowMs(): number {
-        return this.currentMs;
-    }
-
-    async sleepMs(ms: number): Promise<void> {
-        if (ms <= 0) {
-            return;
-        }
-        this.currentMs += ms;
-    }
-
-    advanceMs(ms: number): void {
-        if (ms <= 0) {
-            return;
-        }
-        this.currentMs += ms;
-    }
-
-    setMs(ms: number): void {
-        this.currentMs = ms;
-    }
-}
-
-export class StepClock implements Clock {
-    // 호출마다 일정 간격씩 시간이 진행되는 시계.
-    private currentMs: number;
-    private readonly stepMs: number;
-
-    constructor(stepMs: number, initialMs = 0) {
-        if (stepMs <= 0) {
-            throw new Error('stepMs must be positive');
-        }
-        this.stepMs = stepMs;
-        this.currentMs = initialMs;
-    }
-
-    nowMs(): number {
-        this.currentMs += this.stepMs;
-        return this.currentMs;
-    }
-
-    async sleepMs(ms: number): Promise<void> {
-        if (ms <= 0) {
-            return;
-        }
-        this.currentMs += ms;
-    }
-
-    setMs(ms: number): void {
-        this.currentMs = ms;
-    }
-}
+export { ManualClock, StepClock, SystemClock } from '@sammo-ts/common';

app/game-engine/src/lifecycle/types.ts

@@ -43,10 +43,7 @@ export type TurnDaemonCommand =
     | { type: 'resume'; reason?: string }
     | { type: 'shutdown'; reason?: string };
 
-export interface Clock {
-    nowMs(): number;
-    sleepMs(ms: number): Promise<void>;
-}
+export type { Clock } from '@sammo-ts/common';
 
 export interface TurnSchedule {
     getNextTurnTime(lastTurnTime: Date): Date;