First cut at random-feature-placement macro.

data/campaigns/The_Hammer_of_Thursagan/scenarios/01_At_The_East_Gate.cfg

@@ -72,6 +72,34 @@
     [event]
         name="prestart"
 
+#define RANDOM_FEATURE_PLACEMENT X_SPAN Y_SPAN TERRAIN_PATTERN IMAGE MOD_WML
+    [store_locations]
+        x={X_SPAN}
+        y={Y_SPAN}
+        terrain={TERRAIN_PATTERN}
+        variable=random_placement_locations
+    [/store_locations]
+
+    {VARIABLE_OP random_string format "0..$random_placement_locations.length"}
+
+    {RANDOM $random_string}
+
+    {VARIABLE_OP random_placement_x format "$random_placement_locations[$random].x"}
+    {VARIABLE_OP random_placement_y format "$random_placement_locations[$random].y"}
+
+    {CLEAR_VARIABLE random_placement_locations}
+
+    {UNIT_WML}
+
+    [item]
+        image={IMAGE}
+        x,y=$random_placement_x,$random_placement_y
+        {MOD_WML}
+    [/item]
+#enddef
+
+        {RANDOM_FEATURE_PLACEMENT 1-44 1-30 Gg scenery/pine1.png ()}
+
         [unit]
             type=Gryphon Rider
             description=Pelmathidrol
@@ -117,8 +145,6 @@
     [event]
         name="start"
 
-        {PLACE_IMAGE "scenery/oak-leaning.png" 33 21}
-
         [message]
             description="Aiglondur"
             message=_"Up axes! We will be the Northern Alliance's arm today,