New simple macro for giving drakes a different standing frame on water,

...chasm etc., wired into the glider.

data/core/macros/animation-utils.cfg

@@ -365,6 +365,30 @@
     [/filter]
 #enddef
 
+#define DRAKE_FLYING_ANIM STANDING_FRAME FLYING_FRAME
+    [standing_anim]
+        start_time=0
+        terrain=!,W*,Qx*,Ql*
+        [frame]
+            duration=150
+            image={STANDING_FRAME}
+        [/frame]
+    [/standing_anim]
+
+    [standing_anim]
+        start_time=0
+        [filter]
+            [filter_location]
+                terrain=W*,Qx*,Ql*
+            [/filter_location]
+        [/filter]
+        [frame]
+            duration=150
+            image={FLYING_FRAME}
+        [/frame]
+    [/standing_anim]
+#enddef
+
 #define MISSILE_FRAME_WAIL
     # Animate a projectile for a wail attack.
     [if]

data/core/units/drakes/Glider.cfg

@@ -21,6 +21,7 @@
 
     die_sound=drake-die.ogg
     {DEFENSE_ANIM "units/drakes/glider-defend.png" "units/drakes/glider.png" {SOUND_LIST:DRAKE_HIT} }
+    {DRAKE_FLYING_ANIM "units/drakes/glider.png" "units/drakes/glider-flying.png"}
     [movement_anim]
         [frame]
             begin=0