Use vanilla direction interface for siege engine facing direction

Author: NicksWorld

plugins/lua/buildingplan/planneroverlay.lua

@@ -239,6 +239,7 @@ local direction_panel_types = utils.invert{
     df.building_type.WaterWheel,
     df.building_type.AxleHorizontal,
     df.building_type.Rollers,
+    df.building_type.SiegeEngine,
 }
 
 local function has_direction_panel()
@@ -609,7 +610,7 @@ function PlannerOverlay:init()
 
     local main_panel = widgets.Panel{
         view_id='main',
-        frame={t=1, l=0, r=0, h=15},
+        frame={t=1, l=0, r=0, h=14},
         frame_style=gui.FRAME_INTERIOR_MEDIUM,
         frame_background=gui.CLEAR_PEN,
         visible=self:callback('is_not_minimized'),
@@ -747,24 +748,6 @@ function PlannerOverlay:init()
                 buildingplan.setSpecial(uibs.building_type, uibs.building_subtype, uibs.custom_type, 'engraved', val)
             end,
         },
-        widgets.CycleHotkeyLabel {
-            view_id='siege_facing',
-            frame = {b=4, l=1, w=28},
-            key='CUSTOM_T',
-            key_back='CUSTOM_SHIFT_T',
-            label='Facing:',
-            visible=is_siege_engine,
-            options={
-                {label='North',value=0},
-                {label='Northeast',value=1},
-                {label='East',value=2},
-                {label='Southeast',value=3},
-                {label='South',value=4},
-                {label='Southwest',value=5},
-                {label='West',value=6},
-                {label='Northwest',value=7},
-            },
-        },
         widgets.ToggleHotkeyLabel {
             view_id='empty',
             frame={b=4, l=1, w=22},
@@ -851,7 +834,7 @@ function PlannerOverlay:init()
     }
 
     local divider_widget = widgets.Divider{
-        frame={t=11, l=0, r=0, h=1},
+        frame={t=10, l=0, r=0, h=1},
         frame_style=gui.FRAME_INTERIOR_MEDIUM,
         visible=self:callback('is_not_minimized'),
     }
@@ -1331,9 +1314,9 @@ function PlannerOverlay:place_building(placement_data, chosen_items)
         end
         local fields = {}
         if is_siege_engine() then
-            local val = self.subviews.siege_facing:getOptionValue()
-            fields.facing = val
-            fields.resting_orientation = val
+            local facing = df.global.buildreq.direction
+            fields.facing = facing
+            fields.resting_orientation = facing
         end
         local bld, err = dfhack.buildings.constructBuilding{pos=pos,
             type=uibs.building_type, subtype=subtype, custom=uibs.custom_type,