ANL: remove direct use of overlay, switch to objects

data/multiplayer/scenarios/ANL_utils/ANL_special_macros.cfg

@@ -191,39 +191,33 @@
         [/filter]
 
         [message]
-            side_for=$side_number
+            side_for=$unit.side
             speaker=unit
             message= _ "Let’s cut you free!"
         [/message]
         [message]
-            side_for=$side_number
+            side_for=$unit.side
             speaker=narrator
             message= _ "You release the creature from the web and it agrees to help you."
             image=wesnoth-icon.png
         [/message]
 
-        [store_unit]
+        # Change captured unit
+        [modify_unit]
             [filter]
                 x={UNIT_X}
                 y={UNIT_Y}
             [/filter]
-            variable=critter
-            kill=no
-        [/store_unit]
+            side=$unit.side
+        [/modify_unit]
 
-        [set_variable]
-            name=critter.side
-            value=$side_number
-        [/set_variable]
-        [clear_variable]
-            name=critter.overlays
-        [/clear_variable]
+        [remove_object]
+            x={UNIT_X}
+            y={UNIT_Y}
+            object_id=trapped-web
+        [/remove_object]
 
-        [unstore_unit]
-            variable=critter
-        [/unstore_unit]
-
-        # Lose all moves.
+        # Lose all moves of capturing unit (also if it is a skirmisher)
         [set_variable]
             name=unit.moves
             value=0
@@ -273,7 +267,16 @@
 #define ANL_PLACE_TRAPPED_UNIT SIDE TYPE X Y
     {NOTRAIT_UNIT {SIDE} {TYPE} {X} {Y} }
     [+unit]
-        overlays=projectiles/web.png
+        [+modifications]
+            [object]
+                id=trapped-web
+                duration=scenario
+                [effect]
+                    apply_to=overlay
+                    add=projectiles/web.png
+                [/effect]
+            [/object]
+        [/modifications]
     [/unit]
 #enddef