New macro, ON_DIFFICULTY.

data/core/macros/utils.cfg

@@ -18,6 +18,34 @@
 #endif
 #enddef
 
+
+# No tab or space-based indentation for these macros to avoid trouble when these macros are used
+# in the middle of a quoted string literal
+#
+# wmlindent: start ignoring
+# wmlscope: start conditionals
+#ifdef EASY
+#define ON_DIFFICULTY EASY_VALUE NORMAL_VALUE HARD_VALUE
+# Macros to define different values based on difficulty levels
+#
+# Example:
+# ! [set_variable]
+# !     name=villain
+# !     value={ON_DIFFICULTY (Wolf Rider) (Goblin Knight) (Direwolf Rider)}
+# ! [/set_variable]
+{EASY_VALUE}#enddef
+#endif
+#ifdef NORMAL
+#define ON_DIFFICULTY EASY_VALUE NORMAL_VALUE HARD_VALUE
+{NORMAL_VALUE}#enddef
+#endif
+#ifdef HARD
+#define ON_DIFFICULTY EASY_VALUE NORMAL_VALUE HARD_VALUE
+{HARD_VALUE}#enddef
+#endif
+# wmlscope: stop conditionals
+# wmlindent: stop ignoring
+
 #define TURNS EASY_AMOUNT NORMAL_AMOUNT HARD_AMOUNT
     # Macro to define number of turns for different difficulty levels.
     {QUANTITY turns {EASY_AMOUNT} {NORMAL_AMOUNT} {HARD_AMOUNT}}
@@ -566,7 +594,7 @@
             [/else]
         [/if]
     [/event]
-#enddef 
+#enddef
 #define SCATTER_UNITS NUMBER TYPES PADDING_RADIUS FILTER UNIT_WML
     # Scatters the given kind of units randomly on a given area on the map.
     #