Adds rooftop event assets (#12572)

maps/event/rooftop/code/rooftop.dm

@@ -0,0 +1,28 @@
+/datum/map/event/rooftop
+	name = "Rooftop"
+	full_name = "Mendell City Rooftop"
+	path = "event/rooftop"
+	lobby_icons = list('icons/misc/titlescreens/mendell/mendell_city.dmi')
+	lobby_transitions = FALSE
+
+	allowed_jobs = list(/datum/job/visitor)
+
+	station_levels = list(1)
+	admin_levels = list()
+	contact_levels = list(1)
+	player_levels = list(1)
+	accessible_z_levels = list(1)
+
+	station_name = "The Montparnasse"
+	station_short = "Montparnasse"
+	dock_name = "conglomerate spaceport"
+	boss_name = "Idris Incorporated"
+	boss_short = "Idris"
+	company_name = "Idris Incorporated"
+	company_short = "Idris"
+
+	use_overmap = FALSE
+
+	map_shuttles = list(
+		/datum/shuttle/autodock/ferry/city
+	)

maps/event/rooftop/code/rooftop_areas.dm

@@ -0,0 +1,25 @@
+/area/city
+	name = "City"
+	icon_state = "blue"
+	luminosity = 1
+	dynamic_lighting = 0
+	requires_power = 0
+	no_light_control = 1
+
+/area/city/mendell
+	name = "Mendell City"
+
+/area/city/mendell/interior
+	name = "Mendell City Interior"
+	luminosity = 0
+	requires_power = 0
+	dynamic_lighting = 1
+	no_light_control = 0
+
+/area/shuttle/city
+	name = "City Transit Shuttle"
+	base_turf = /turf/unsimulated/floor/plating
+	luminosity = 1
+	dynamic_lighting = 0
+	requires_power = 0
+	no_light_control = 1

maps/event/rooftop/code/rooftop_shuttles.dm

@@ -0,0 +1,31 @@
+/datum/shuttle/autodock/ferry/city
+	name = "City Transit Shuttle"
+	location = 1
+	warmup_time = 10
+	shuttle_area = /area/shuttle/city
+	move_time = 50
+	dock_target = "City Transit Shuttle"
+	waypoint_station = "nav_city_dock"
+	landmark_transition = "nav_city_interim"
+	waypoint_offsite = "nav_city_start"
+
+/obj/effect/shuttle_landmark/city/start
+	name = "City Shuttle Base"
+	landmark_tag = "nav_city_start"
+	docking_controller = "city_station"
+	base_turf = /turf/unsimulated/floor/plating
+	base_area = /area/city/mendell
+
+/obj/effect/shuttle_landmark/city/interim
+	name = "In Transit"
+	landmark_tag = "nav_city_interim"
+	base_turf = /turf/unsimulated/floor/plating
+	base_area = /area/city/mendell
+
+/obj/effect/shuttle_landmark/city/dock
+	name = "city Shuttle Dock"
+	landmark_tag = "nav_city_dock"
+	docking_controller = "city_shuttle_dock"
+	landmark_flags = SLANDMARK_FLAG_AUTOSET
+	base_turf = /turf/unsimulated/floor/plating
+	base_area = /area/city/mendell