Added a WIP of a new experimental fake map edge terrain.

data/core/terrain-graphics.cfg

@@ -16,6 +16,35 @@
 # NOTE the terrain _off^_usr gets its definition from the code since it's
 # themable
 
+
+    # These are temporary rules for developing and testing a new fake map edge
+    # terrain
+    [terrain_graphics]
+        map="
+    , 2
+    2 , 2
+    , 1
+    2 , 2
+    , 2"
+        [tile]
+            pos=1
+            type=*^_fme
+            set_no_flag=fakemapedge
+        [/tile]
+        [tile]
+            pos=2
+            type=*^_fme
+        [/tile]
+
+        [image]
+            layer=1000
+            name=off-map/border.png
+            center=90,144
+        [/image]
+    [/terrain_graphics]
+    {TRANSITION_COMPLETE_L (!,*^_fme) (*^_fme) 1000 off-map/border}
+
+
  # TRACK LAYOUT MUST STAY ON TOP
  # they set flags that will be used by other macros later.
  # they don't set any image by themselves.

data/core/terrain.cfg

@@ -1873,6 +1873,16 @@
     editor_group=special
 [/terrain_type]
 
+[terrain_type]
+    symbol_image=off-map/symbol
+    editor_image=off-map/border-ne-se-s-sw-nw-n
+    id=off_map2
+#    name= _ "None"
+#   editor_name= _ "Experimental Fake Map Edge"
+    string=^_fme    # wmllint: ignore
+    editor_group=special
+[/terrain_type]
+
 [terrain_type]
     symbol_image=void/void
     editor_image=void/shroud-editor