refactor: 重构 update 函数

缩小嵌套层级。

NineChess/src/ninechess.cpp

@@ -1172,9 +1172,11 @@ inline long NineChess::update(long time_p /*= -1*/)
     long playerNext_ms = (context.turn == PLAYER1 ? elapsedMS_2 : elapsedMS_1);
 
     // 根据局面调整计时器
-    switch (context.stage) {
-    case NineChess::GAME_PLACING:
-    case NineChess::GAME_MOVING:
+
+    if (!(context.stage == GAME_PLACING || context.stage == GAME_MOVING)) {
+        return -1;
+    }
+
     ftime(&currentTimeb);
 
     // 更新时间
@@ -1194,20 +1196,11 @@ inline long NineChess::update(long time_p /*= -1*/)
     }
 
     // 有限时要求则判断胜负
-        if (currentRule.maxTimeLedToLose > 0)
+    if (currentRule.maxTimeLedToLose > 0) {
         win();
-
-        return ret;
-
-    case NineChess::GAME_NOTSTARTED:
-        return ret;
-
-    case NineChess::GAME_OVER:
-        return ret;
-
-    default:
-        return ret;
     }
+
+    return ret;
 }
 
 // 是否分出胜负