adding new dry hills terrain.

Step 2. Done -- for now, transistions could be made smarter.

data/core/terrain-graphics.cfg

@@ -109,7 +109,7 @@
 {MOUNTAIN_SINGLE         Ms                                     100       overlay  snow-mountains}
 
 #This one is to fill any "gaps" there might be when next to castles or walls
-{TERRAIN_BASE            Mm                                                        hills-variation}
+{TERRAIN_BASE            Mm                                                        hills/regular}
 {TERRAIN_BASE            Ms                                                        snow-hills}
 
 {OVERLAY_LF              *^Xm                                         1   clouds1  cloud1_1}
@@ -266,7 +266,8 @@
 {TERRAIN_BASE_RANDOM     Rp                                                        flat/stone-path}
 
 # Hills base terrain
-{TERRAIN_BASE_RANDOM     Hh                                                        hills-variation}
+{TERRAIN_BASE_RANDOM     Hh                                                        hills/regular}
+{TERRAIN_BASE_RANDOM     Hhd                                                       hills/dry}
 
 # Cave base terrains
 
@@ -504,12 +505,14 @@
 
 {TRANSITION_BASE_L     Md               (!,Md,Qxu)                  -160               desert-mountains}
 
-{TRANSITION_BASE_L     (Ms,Ha)          Hh                          -170               snow-hills-to-hills}
+{TRANSITION_BASE_L     (Ms,Ha)          Hh*                         -170               snow-hills-to-hills}
 {TRANSITION_BASE_L     (Ms,Ha)          (W*,Ss)                     -171               snow-hills-to-water}
 {TRANSITION_BASE_L     (Ms,Ha)          (!,Ha,Qxu,Mm,Ms,Md)         -172               snow-hills}
 
-{TRANSITION_BASE_L     (Mm,Hh)          (!,Hh,W*,Ss)                -180               hills}
-{TRANSITION_BASE_LF    (Mm,Hh)          (W*,Ss)                     -181  transition2  hills}
+{TRANSITION_BASE_L     (Mm,Hh)          (!,Hh,W*,Ss)                -180               hills/regular}
+{TRANSITION_BASE_LF    (Mm,Hh)          (W*,Ss)                     -181  transition2  hills/regular}
+{TRANSITION_BASE_L     (Hhd)            (!,Hh,W*,Ss)                -183               hills/dry}
+{TRANSITION_BASE_LF    (Hhd)            (W*,Ss)                     -184  transition2  hills/dry}
 {TRANSITION_BASE_L     Hd               (!,Hd,Qxu)                  -190               desert-hills}
 {TRANSITION_BASE_L     Uh               (!,Uh)                      -200               cave/hills}
 
@@ -526,7 +529,7 @@
 # These two work in conjunction with the mountain and hill transitions to create
 # a smooth coastline between grassland, hills and mountains.
 
-#{TRANSITION_BASE_LB     (Gg*,Qxu,Mm,Ms,Hh) Wo                       -260 ANIMATION_15  flat/grass-to-water}
+#{TRANSITION_BASE_LB     (Gg*,Qxu,Mm,Ms,Hh*) Wo                       -260 ANIMATION_15  flat/grass-to-water}
 {TRANSITION_BASE_L   (Gg*,Qxu,Mm,Ms,Hh) W*                          -260               flat/grass-to-water}
 {TRANSITION_BASE_L     (Gg*,Qxu)        (!,Gg*,Qxu,Mm,Ms,Hh)        -270               flat/grass}
 {TRANSITION_BASE_LF    (!,Ggf)          Ggf                   -271  flower-transition  flat/grass}

data/core/terrain.cfg

@@ -893,13 +893,21 @@
 #
 
 [terrain_type]
-    symbol_image=hills-variation
+    symbol_image=hills/regular
     id=hills
     name= _ "Hills"
     string=Hh
     editor_group=rough
 [/terrain_type]
 
+[terrain_type]
+    symbol_image=hills/dry
+    id=hills_dry
+    name= _ "Hills"
+    string=Hhd
+    editor_group=rough
+[/terrain_type]
+
 [terrain_type]
     symbol_image=desert-hills
     id=desert_hills