Added a little overlay icon to dehydrated units.

data/campaigns/Under_the_Burning_Suns/scenarios/02_Across_the_Harsh_Sands.cfg

@@ -342,6 +342,7 @@
             role=$enemy[$i].role
             moves=$enemy[$i].moves
             attacks_left=$enemy[$i].attacks_left
+            overlays=misc/dehydration-icon.png
             [status]
                 slowed=$enemy[$i].status.slowed
                 poisoned=$enemy[$i].status.poisoned
@@ -448,6 +449,11 @@
                     text= _ "thirst"
                     {COLOR_HARM}
                 [/unstore_unit]
+
+                [unit_overlay]
+                    x,y=$dehydrating_units[$i].x,$dehydrating_units[$i].y
+                    image=misc/dehydration-icon.png
+                [/unit_overlay]
             [/else]
         [/if]
     {NEXT i}
@@ -488,6 +494,11 @@
             text= _ "refreshed"
             {COLOR_HEAL}
         [/unstore_unit]
+
+        [remove_unit_overlay]
+            x,y=$hydrating_units[$i].x,$hydrating_units[$i].y
+            image=misc/dehydration-icon.png
+        [/remove_unit_overlay]
     {NEXT i}
 
     {CLEAR_VARIABLE hydrating_units}