[Add] Created an 'idle' task to run when idle for easy to change idle behaviours.

scripts/ai/tpl/generic.lua

@@ -55,14 +55,7 @@ function control()
   elseif task == "hyperspace" then
     ai.hyperspace() -- Try to hyperspace.
   else -- Get new task.
-    planet = ai.landplanet()
+  idle()
-    -- Planet must exist.
-    if planet == nil or land_planet == false then
-      ai.pushtask(0, "hyperspace")
-    else
-      ai.pushtask(0, "hyperspace")
-      ai.pushtask(0, "land", planet)
-    end
   end
 end
 
@@ -82,6 +75,18 @@ function attacked(attacker)
   end
 end
 
+-- Default task to run when idle.
+function idle()
+  planet = ai.landplanet()
+  -- Planet must exist.
+  if planet == nil or land_planet == false then
+    ai.pushtask(0, "hyperspace")
+  else
+    ai.pushtask(0, "hyperspace")
+    ai.pushtask(0, "land", planet)
+  end
+end
+
 function create()
   -- Empty stub.
 end