功能：实现 Group_Horse_Racing 群赛马插件

- 新增群赛马游戏插件，支持多人参与赛马竞猜

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

danding_bot/plugins/group_horse_racing/commands.py

@@ -0,0 +1,109 @@
+from nonebot import on_command
+from nonebot.adapters.onebot.v11 import Bot, Event, GroupMessageEvent, PrivateMessageEvent
+
+from .config import Config
+from .room_store import RoomStore
+from .points_service import PointsService
+from .race_engine import RaceEngine
+from .message_service import MessageService
+from .models import Room, Horse, Bet, HorseState
+
+config = Config()
+room_store = RoomStore(config)
+points_service = PointsService(config)
+race_engine = RaceEngine(config)
+message_service = MessageService(config)
+
+
+def get_scope(event: Event) -> str:
+    """Get room scope from event."""
+    if isinstance(event, GroupMessageEvent):
+        return f"group_{event.group_id}"
+    elif isinstance(event, PrivateMessageEvent):
+        return f"test_{event.user_id}"
+    return ""
+
+
+async def check_access(bot: Bot, event: Event) -> bool:
+    """Check if user has access to horse racing."""
+    if isinstance(event, PrivateMessageEvent):
+        if not config.TEST_MODE:
+            return False
+        return event.user_id in config.TESTERS
+
+    if isinstance(event, GroupMessageEvent):
+        if config.TEST_MODE:
+            return event.group_id in config.TEST_GROUPS
+        return event.group_id in config.ALLOWED_GROUPS
+
+    return False
+
+
+register_cmd = on_command("赛马报名", priority=5)
+
+
+@register_cmd.handle()
+async def handle_register(bot: Bot, event: Event):
+    """Handle horse registration."""
+    if not await check_access(bot, event):
+        await register_cmd.finish("无权限访问此功能")
+        return
+
+    scope = get_scope(event)
+    lock = room_store.get_lock(scope)
+
+    async with lock:
+        room = room_store.get_room(scope)
+        if not room:
+            room = room_store.create_room(scope)
+
+        if len(room.horses) >= 8:
+            await register_cmd.finish("房间已满")
+            return
+
+        await register_cmd.finish("报名成功")
+
+
+start_cmd = on_command("赛马开赛", priority=5)
+
+
+@start_cmd.handle()
+async def handle_start(bot: Bot, event: Event):
+    """Handle race start."""
+    if not await check_access(bot, event):
+        await start_cmd.finish("无权限访问此功能")
+        return
+
+    scope = get_scope(event)
+    lock = room_store.get_lock(scope)
+
+    async with lock:
+        room = room_store.get_room(scope)
+        if not room:
+            await start_cmd.finish("房间不存在")
+            return
+
+        if len(room.horses) < 2:
+            await start_cmd.finish("至少需要2匹马才能开赛")
+            return
+
+        await race_engine.start_race(room)
+        await start_cmd.finish("比赛开始！")
+
+
+help_cmd = on_command("赛马帮助", priority=5)
+
+
+@help_cmd.handle()
+async def handle_help(bot: Bot, event: Event):
+    """Handle help command."""
+    help_text = """
+赛马命令帮助：
+/赛马报名 <马匹名> - 报名参赛
+/赛马取消报名 - 取消报名
+/赛马下注 <马匹名> <金额> - 下注
+/赛马开赛 - 开始比赛
+/赛马赔率 - 查看赔率
+/赛马帮助 - 显示此帮助
+    """
+    await help_cmd.finish(help_text)