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AI地牢游戏

模块4：UI实现

要开始构建UI，我们需要将本地开发服务器配置为指向已部署的沙箱环境。运行以下命令：

Terminal window
pnpm nx run @dungeon-adventure/game-ui:load:runtime-config

该命令将拉取已部署的runtime-config.json文件，并将其存储在本地packages/game-ui/public目录中。

现在可以通过以下命令启动开发服务器：

Terminal window
pnpm nx run @dungeon-adventure/game-ui:serve

在浏览器中打开本地网站（http://localhost:4200/）后，系统会提示登录并创建新用户。完成操作后即可看到基础网站：

baseline-website.png

创建新的’/game’路由

通过创建类型安全路由来展示@tanstack/react-router的能力。在指定位置创建空文件：packages/game-ui/src/routes/game/index.tsx，并观察开发服务器日志：

Terminal window
♻️  Regenerating routes...
🟡 Updating /Users/dimecha/dungeon-adventure/packages/game-ui/src/routes/game/index.tsx
🟡 Updating /Users/dimecha/dungeon-adventure/packages/game-ui/src/routeTree.gen.ts
✅ Processed routes in 27ms

@tanstack/react-router已自动配置新路由，创建的文件将包含路由路径：

import { createFileRoute } from '@tanstack/react-router'


export const Route = createFileRoute('/game/')({
  component: RouteComponent,
})


function RouteComponent() {
  return <div>Hello "/game/"!</div>
}

访问http://localhost:4200/game即可看到新页面已渲染：

baseline-game.png

更新index.tsx文件以默认加载新路由。注意更新to字段时，可选择类型安全路由列表：

packages/game-ui/src/routes/index.tsx
import { createFileRoute, Navigate } from '@tanstack/react-router';


export const Route = createFileRoute('/')({
  component: () => <Navigate to="/game" />,
});

最后删除不再需要的packages/game-ui/src/routes/welcome/目录。

布局更新

默认布局更适用于SaaS风格商业应用。我们将重新配置布局和主题，使其符合地牢游戏风格。

对packages/game-ui/src进行以下修改：

packages/game-ui/src/config.ts
export default {
  applicationName: 'Dungeon Adventure',
};

删除不再使用的packages/game-ui/src/components/AppLayout/navitems.ts和packages/game-ui/src/hooks/useAppLayout.tsx文件。

游戏页面

创建调用API的游戏页面以完成游戏实现：

packages/game-ui/src/routes/game/index.tsx
import { FormField, Spinner } from '@cloudscape-design/components';
import { useInfiniteQuery, useMutation } from '@tanstack/react-query';
import { createFileRoute, useNavigate } from '@tanstack/react-router';
import {
  createRef,
  LegacyRef,
  MutableRefObject,
  useEffect,
  useMemo,
  useState,
} from 'react';
import { useGameApi } from '../../hooks/useGameApi';
import { IAction, IGame } from ':dungeon-adventure/game-api-schema';


type IGameState = Omit<IGame, 'lastUpdated'> & { actions: IAction[] };


export const Route = createFileRoute('/game/')({
  component: RouteComponent,
});


// 检查元素是否可见的hook
export function useIsVisible(ref: MutableRefObject<any>) {
  const [isIntersecting, setIntersecting] = useState(false);


  useEffect(() => {
    const observer = new IntersectionObserver(([entry]) =>
      setIntersecting(entry.isIntersecting),
    );


    ref.current && observer.observe(ref.current);
    return () => {
      observer.disconnect();
    };
  }, [ref]);


  return isIntersecting;
}


function RouteComponent() {
  const [playerName, setPlayerName] = useState('');
  const navigate = useNavigate();
  const ref = createRef();
  const isLastGameVisible = useIsVisible(ref);


  const gameApi = useGameApi();
  const saveGameMutation = useMutation(gameApi.games.save.mutationOptions());


  const {
    data: gamesPages,
    fetchNextPage,
    hasNextPage,
    isFetchingNextPage,
  } = useInfiniteQuery(
    gameApi.games.query.infiniteQueryOptions(
      { limit: 10 },
      { getNextPageParam: ({ cursor }) => cursor },
    ),
  );
  const games = useMemo(() => {
    return gamesPages?.pages.flatMap((page) => page.items) || [];
  }, [gamesPages]);


  // 当最后一个游戏可见时加载更多
  useEffect(() => {
    if (isLastGameVisible && hasNextPage && !isFetchingNextPage) {
      fetchNextPage();
    }
  }, [isFetchingNextPage, hasNextPage, fetchNextPage, isLastGameVisible]);


  const playerAlreadyExists = (playerName?: string) => {
    return !!games?.find((s) => s.playerName === playerName);
  };


  // 创建新游戏
  const handleStartGame = async (
    playerName: string,
    genre: IGameState['genre'],
  ) => {
    if (playerAlreadyExists(playerName)) {
      return;
    }
    try {
      await saveGameMutation.mutateAsync({
        playerName,
        genre,
      });


      await handleLoadGame(playerName, genre);
    } catch (error) {
      console.error('创建游戏失败:', error);
    }
  };


  // 加载已有游戏
  const handleLoadGame = async (
    playerName: string,
    genre: IGameState['genre'],
  ) => {
    await navigate({
      to: '/game/$playerName',
      params: { playerName },
      search: { genre },
    });
  };


  return (
    <div className="game-interface">
      <header className="game-header">
        <h1>AI地牢冒险</h1>
      </header>


      {/* 新游戏区域 */}
      <div className="new-game">
        <h2>开始新游戏</h2>
        <div className="game-setup">
          <FormField
            errorText={
              playerAlreadyExists(playerName)
                ? `${playerName} 已存在`
                : undefined
            }
          >
            <input
              type="text"
              placeholder="输入角色名称"
              className="name-input"
              onChange={(e) => setPlayerName(e.target.value)}
              onKeyDown={(e) => {
                if (e.key === 'Enter') {
                  const input = e.currentTarget;
                  handleStartGame(input.value, 'medieval');
                }
              }}
            />
          </FormField>
          <div className="genre-grid">
            {(['zombie', 'superhero', 'medieval'] as const).map((genre) => (
              <button
                key={genre}
                className="genre-button"
                onClick={() => {
                  const playerName = document.querySelector('input')?.value;
                  if (playerName) {
                    handleStartGame(playerName, genre);
                  }
                }}
              >
                {genre.charAt(0).toUpperCase() + genre.slice(1)}
              </button>
            ))}
          </div>
        </div>
      </div>


      {/* 已保存游戏区域 */}
      {games && games.length > 0 && (
        <div className="saved-games">
          <h2>继续游戏</h2>
          <div className="game-list">
            {games.map((game, idx) => (
              <button
                key={game.playerName}
                ref={
                  idx === games.length - 1
                    ? (ref as LegacyRef<HTMLButtonElement>)
                    : undefined
                }
                onClick={() => handleLoadGame(game.playerName, game.genre)}
                className="game-session"
              >
                <div className="player-name">{game.playerName}</div>
                <div className="genre-name">
                  {game.genre.charAt(0).toUpperCase() + game.genre.slice(1)}
                </div>
              </button>
            ))}
            {isFetchingNextPage && <Spinner data-style="generating" size="big" />}
          </div>
        </div>
      )}
    </div>
  );
}

完成修改后，本地开发服务器（http://localhost:4200/）即可运行完整游戏！

也可选择构建并部署代码至Cloudfront
game-select.png
game-conversation.png

恭喜！您已成功构建并部署地牢冒险游戏！🎉🎉🎉