Implement replayEvents on GameEngine

dshaneg · Mar 1, 2018 · 8057fff · 8057fff
1 parent 9d6bdda
commit 8057fff
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Showing 3 changed files with 40 additions and 3 deletions.
diff --git a/src/game-engine.ts b/src/game-engine.ts
@@ -16,6 +16,15 @@ export class GameEngine {
     private mapNodeRepository: MapNodeRepository) {
   }
 
+  replayEvents(gameState: GameState, events: any[]) {
+    const stateSubscriber = this.gameStateEventSubscriberFactory.create(gameState);
+    const publisher = new Publisher([stateSubscriber]);
+
+    events.forEach(event => {
+      publisher.publish(event);
+    });
+  }
+
   startGame(gameState: GameState): any {
     return this.handleInput(gameState, 'start game');
   }

diff --git a/src/game-manager.ts b/src/game-manager.ts
@@ -7,7 +7,7 @@ export class GameManager {
   constructor(private gameSessionRepository: any) {
   }
 
-  createGame() {
+  createGame(): GameState {
     const gameState = this.gameSessionRepository.create();
 
     return gameState;

diff --git a/src/test/smoke.ts b/src/test/smoke.ts
@@ -24,10 +24,11 @@ class HelloParser extends Parser {
   }
 }
 
-describe('Smoke Tests', () => {
+const gameEngine = TextAdventureCore.createGameEngine(gameDefinitionRepository, mapNodeRepository, itemRepository, new HelloParser(), true);
+
+describe('Sequential Smoke Tests', () => {
 
   const gameState = TextAdventureCore.createGameManager(gameSessionRepository).createGame();
-  const gameEngine = TextAdventureCore.createGameEngine(gameDefinitionRepository, mapNodeRepository, itemRepository, new HelloParser(), true);
 
   it('start the game', () => {
     const response = gameEngine.startGame(gameState);
@@ -79,6 +80,33 @@ describe('Smoke Tests', () => {
   });
 });
 
+describe('Replay Tests', () => {
+  let gameState: GameState;
+
+  beforeEach(() => {
+    gameState = TextAdventureCore.createGameManager(gameSessionRepository).createGame();
+  });
+
+  it('replay should reproduce same state as original play', () => {
+    const events: any[] = gameEngine.startGame(gameState).events
+      .concat(gameEngine.handleInput(gameState, 'go south').events)
+      .concat(gameEngine.handleInput(gameState, 'go south').events)
+      .concat(gameEngine.handleInput(gameState, 'go south').events)
+      .concat(gameEngine.handleInput(gameState, 'hello').events)
+      .concat(gameEngine.handleInput(gameState, 'conjureitem 1002').events)
+      .concat(gameEngine.handleInput(gameState, 'help').events)
+      .concat(gameEngine.handleInput(gameState, 'inventory').events)
+      .concat(gameEngine.handleInput(gameState, 'exit').events)
+      .concat(gameEngine.stopGame(gameState).events);
+
+    const newState = TextAdventureCore.createGameManager(gameSessionRepository).createGame();
+    gameEngine.replayEvents(newState, events);
+
+    expect(newState.player).to.deep.equal(gameState.player);
+    expect(newState.isStarted).to.equal(gameState.isStarted);
+  });
+});
+
 function debug(response: any) {
   console.log('==============================================');
   console.log(`input: ${response.command}`);