Added a macro for allowing a side to randomly recruit given unit variations...

...(usually WC variations), and made Muff Malal's Peninsula use that.

data/campaigns/Heir_To_The_Throne/scenarios/05a_Muff_Malal_Peninsula.cfg

@@ -76,6 +76,8 @@
         enemy=1
     [/side]
 
+    {RECRUIT_UNIT_VARIATIONS 2 "Walking Corpse" none,none,none,none,swimmer,swimmer,mounted,bat}
+
     {STARTING_VILLAGES 2 30}
 
     [event]

data/core/macros/utils.cfg

@@ -479,3 +479,46 @@
     {CLEAR_VARIABLE TIME_ACTIONS_time_begin}
     {CLEAR_VARIABLE TIME_ACTIONS_time_end}
 #enddef
+
+#define RECRUIT_UNIT_VARIATIONS SIDE TYPE VARIATIONS
+    # Allows a side to seemingly recruit variations of a given unit, such as the
+    # the Walking Corpse.
+    #
+    # An example which makes side 2 have a 50% chance of getting a normal WC
+    # and a 50% chance of getting either a drake or dwarf variation:
+    #! {RECRUIT_UNIT_VARIATIONS 2 "Walking Corpse" none,none,drake,dwarf}
+    [event]
+        name=prerecruit
+        first_time_only=no
+
+        [filter]
+            side={SIDE}
+            type={TYPE}
+        [/filter]
+
+        {VARIABLE_OP recruited_unit_random_variation rand {VARIATIONS}}
+
+        [if]
+            [variable]
+                name=recruited_unit_random_variation
+                not_equals=none
+            [/variable]
+
+            [then]
+                [object]
+                    duration=forever
+                    silent=yes
+
+                    [filter]
+                        x,y=$x1,$y1
+                    [/filter]
+
+                    [effect]
+                        apply_to=variation
+                        name=$recruited_unit_random_variation
+                    [/effect]
+                [/object]
+            [/then]
+        [/if]
+    [/event]
+#enddef