d_s_play OK, work on d_a_ykgr (#2035)

include/d/save/d_save.h

@@ -509,6 +509,7 @@ public:
     void set(const char* i_name, const cXyz& i_pos, s16 i_angle, s8 i_spawn, u8 i_regionNo);
 
     bool isFieldDataExistFlag() const { return mFieldDataExistFlag; }
+    void offFieldDataExistFlag() { mFieldDataExistFlag = false; }
 
 private:
     /* 0x00 */ cXyz mPos;

include/d/save/d_save_HIO.h

@@ -228,4 +228,6 @@ public:
 
 STATIC_ASSERT(sizeof(dSvBit_HIO_c) == 0x4A0);
 
+extern dSvBit_HIO_c g_save_bit_HIO;
+
 #endif /* D_SAVE_D_SAVE_HIO_H */