Merge pull request #4637 from Earth-Cake/tutorial-undo_reminder

Tutorial - remove repeating help messages

data/campaigns/tutorial/scenarios/02_Tutorial_part_2.cfg

@@ -178,6 +178,8 @@
         [disallow_end_turn]
             reason=_"You cannot end your turn until you have recruited troops and captured a village!"
         [/disallow_end_turn]
+
+        {VARIABLE undo_option yes}
     [/event]
 
     [event]
@@ -1304,5 +1306,6 @@ Please report the bug."
 
         {CLEAR_VARIABLE low_hp_unit_message,lhpu_msg_i}
         {CLEAR_VARIABLE spoke_about_income,spoke_about_orcs_crossing_river}
+        {CLEAR_VARIABLE undo_option}
     [/event]
 [/scenario]

data/campaigns/tutorial/utils/utils.cfg

@@ -52,12 +52,22 @@
 #enddef
 
 #define UNDO_REMINDER
-    [message]
-        speaker=narrator
-        caption= _"Undo"
-        image=wesnoth-icon.png
-        message= _"Don’t forget, you can press <b>u</b> to undo most things if you make a mistake."
-    [/message]
+    [if]
+        [variable]
+            name=undo_option
+            equals=yes
+        [/variable]
+        [then]
+            [message]
+                speaker=narrator
+                caption= _"Undo"
+                image=wesnoth-icon.png
+                message= _"Don’t forget, you can press <b>u</b> to undo most things if you make a mistake."
+            [/message]
+
+            {CLEAR_VARIABLE undo_option}
+        [/then]
+    [/if]
 
     [allow_undo][/allow_undo]
 #enddef