From 624f697beeaae6712edbe68f52ca859ae499c2a1 Mon Sep 17 00:00:00 2001
From: Zihao Xu <xzhseh@gmail.com>
Date: Wed, 7 Jan 2026 23:30:26 -0800
Subject: [PATCH] fix: pause game during save load to prevent stale events
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

The game loop could generate events with the old world's timestamp while
loading a save, causing 100年1月 events to appear after loading a 106年
save. Now we pause the game before loading and keep it paused after,
giving the frontend time to refresh state.
---
 src/server/main.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/server/main.py b/src/server/main.py
index 7482da4..85a19cc 100644
--- a/src/server/main.py
+++ b/src/server/main.py
@@ -1307,6 +1307,9 @@ def api_load_game(req: LoadGameRequest):
         if not target_path.exists():
             raise HTTPException(status_code=404, detail="File not found")
 
+        # 暂停游戏，防止 game_loop 在加载过程中使用旧 world 生成事件。
+        game_instance["is_paused"] = True
+
         # 关闭旧 World 的 EventManager，释放 SQLite 连接。
         old_world = game_instance.get("world")
         if old_world and hasattr(old_world, "event_manager"):
@@ -1323,6 +1326,9 @@ def api_load_game(req: LoadGameRequest):
         game_instance["sim"] = new_sim
         game_instance["current_save_path"] = target_path
 
+        # 加载完成后保持暂停状态，让用户决定何时恢复。
+        # 这也给前端时间来刷新状态。
+        
         return {"status": "ok", "message": "Game loaded"}
     except Exception as e:
         import traceback