depth: 如果深度小于1则设置为1

为了调试需要, 新增 DEPTH_ADJUST 宏用于深度调整.

include/config.h

@@ -43,6 +43,8 @@
 
 #define DEFAULT_RULE_NUMBER 1
 
+#define DEPTH_ADJUST (0)
+
 //#define HARD_LEVEL_DEPTH
 
 //#define TIME_STAT

src/ai/search.cpp

@@ -156,6 +156,10 @@ depth_t AIAlgorithm::changeDepth(depth_t origDepth)
         d -= reduce;
     }
 
+    d += DEPTH_ADJUST;
+
+    d = d >= 1 ? d : 1;
+
     loggerDebug("Depth: %d\n", d);
 
     return d;

src/game/types.h

@@ -23,7 +23,7 @@
 #include "config.h"
 
 using step_t = uint16_t;
-using depth_t = uint8_t;
+using depth_t = int8_t;
 using location_t = uint8_t;
 
 #ifdef TRANSPOSITION_TABLE_CUTDOWN