DM S09: Make secret passage bi-directional and open to all

Only after the player goes through it first.

data/campaigns/Delfadors_Memoirs/utils/misc.cfg

@@ -36,14 +36,7 @@
             speaker=unit
             message=_"A secret passage... I wonder where it leads..."
         [/message]
-    [/event]
-    [event]
-        name=moveto
-        first_time_only=no
-        [filter]
-            x={X}
-            y={Y}
-        [/filter]
+        # move the player automatically the first time they find the passage
         [teleport]
             [filter]
                 x={X}
@@ -61,6 +54,19 @@
             x={TO_X}
             y={TO_Y}
         [/scroll_to_unit]
+        # now make the secret passage for real
+        [tunnel]
+            [filter]
+            [/filter]
+            [source]
+                x={X}
+                y={Y}
+            [/source]
+            [target]
+                x={TO_X}
+                y={TO_Y}
+            [/target]
+        [/tunnel]
     [/event]
 #enddef