-#define DOOR_OPEN_1 1
-#define DOOR_OPEN_2 2
-#define DOOR_CLOSE_1 4
-#define DOOR_CLOSE_2 8
-#define DOOR_OPEN_BOTH (DOOR_OPEN_1 | DOOR_OPEN_2)
-#define DOOR_CLOSE_BOTH (DOOR_CLOSE_1 | DOOR_CLOSE_2)
-#define DOOR_ACTION_1 (DOOR_OPEN_1 | DOOR_CLOSE_1)
-#define DOOR_ACTION_2 (DOOR_OPEN_2 | DOOR_CLOSE_2)
-#define DOOR_ACTION (DOOR_ACTION_1 | DOOR_ACTION_2)
-#define DOOR_COPY_BACK 16
-#define DOOR_NO_DELAY 32
-#define DOOR_GET_STATE 64
-
-/* for AreYouSure */
-#define AYS_ASK 1
-#define AYS_OPEN 2
-#define AYS_CLOSE 4
-#define AYS_CONFIRM 8
-#define AYS_STAY_CLOSED 16
-#define AYS_STAY_OPEN 32
+#define DOOR_OPEN_1 (1 << 0)
+#define DOOR_OPEN_2 (1 << 1)
+#define DOOR_CLOSE_1 (1 << 2)
+#define DOOR_CLOSE_2 (1 << 3)
+#define DOOR_OPEN_ALL (DOOR_OPEN_1 | DOOR_OPEN_2)
+#define DOOR_CLOSE_ALL (DOOR_CLOSE_1 | DOOR_CLOSE_2)
+#define DOOR_ACTION_1 (DOOR_OPEN_1 | DOOR_CLOSE_1)
+#define DOOR_ACTION_2 (DOOR_OPEN_2 | DOOR_CLOSE_2)
+#define DOOR_ACTION (DOOR_ACTION_1 | DOOR_ACTION_2)
+#define DOOR_COPY_BACK (1 << 4)
+#define DOOR_NO_COPY_BACK (1 << 5)
+#define DOOR_NO_DELAY (1 << 6)
+#define DOOR_FORCE_REDRAW (1 << 7)
+#define DOOR_GET_STATE (1 << 8)
+#define DOOR_SET_STATE (1 << 9)
+
+/* for Request */
+#define REQ_ASK (1 << 0)
+#define REQ_CONFIRM (1 << 1)
+#define REQ_PLAYER (1 << 2)
+#define REQ_STAY_OPEN (1 << 3)
+#define REQ_STAY_CLOSED (1 << 4)
+#define REQ_REOPEN (1 << 5)
+
+#define REQUEST_WAIT_FOR_INPUT (REQ_ASK | REQ_CONFIRM | REQ_PLAYER)
+
+void DumpTile(int, int);
+
+void DrawMaskedBorder_FIELD();
+void DrawMaskedBorder_DOOR_1();
+void DrawMaskedBorder_DOOR_2();
+void DrawMaskedBorder_DOOR_3();
+void DrawMaskedBorder_ALL();
+void DrawMaskedBorder(int);