if not Scene then

	Scene = {}

end



function getSceneData(cid, did, sid)

	if not cid or not did or not sid then

		return

	end



	local country = world[cid]

	if not country then

		return

	end



	local district = country[did]

	if not district then

		return

	end

	return district[sid]

end



function Scene.onCheckDistrict(cid, did, lvl)

	print("try to enter disctrict:", cid, did)

	local country = world[cid]

	if not country then

		return false

	end



	local district = country[did]

	if not district then

		return false

	end



	--

	--	add some logic of check level

	--

	return true

end



function Scene.onCreate(cid, did, sid, scnmgr, progress)

	if not scnmgr then

		log.error("failed to create scene, null scene manager")

		return 0

	end

	if not progress then

		log.error("failed to create scene, null progress")

		return 0

	end



	local sd = getSceneData(cid, did, sid)

	if not sd then

		log.error("failed to create scene, null static scene data")

		return 0

	end



	--

	--	add some dependency checking here, such as:

	--	level requirement

	--	scene dependency

	--	progress data

	--



	local scene = scnmgr:addScene(cid, did, sid, sd.type)

	if not scene then

		log.error("failed to create scene, manager error")

	end

end



function Scene.onLoad(scene)

	log.info("loading scene ...")

end



function Scene.onLoadCity(scene)

	log.info("loading scene for city ...")

	local cid, did, sid = scene:getStaticID()

	local sd = getSceneData(cid, did, sid)

	if not sd then

		log.error("failed to load combat scene")

		return

	end

	

	local m = scene:addN(10001)

	if m then

		m:setPosition(1, 1, 0)

	end



	m = scene:addN(10002)

	if m then

		m:setPosition(1, 2, 0)

	end

	

	m = scene:addN(10003)

	if m then

		m:setPosition(3, 2, 0)

	end



end



function Scene.onLoadCombat(scene)

	log.info("loading scene for combat ...")

	local cid, did, sid = scene:getStaticID()

	local sd = getSceneData(cid, did, sid)

	if not sd then

		log.error("failed to load combat scene")

		return

	end

	

end



function Scene.onStartCombat(scene, datamgr, wid)

	log.info("scene start combatting: ", wid)

	local cid, did, sid = scene:getStaticID()

	local prev_wid = datamgr:get(cid, did, sid)

	if prev_wid+1<wid then

		log.error("failed to start combat, required wave not complete")

		return false

	end

	local sd = getSceneData(cid, did, sid)

	if not sd then

		log.error("failed to start combat, invalid static data")

		return false

	end



	local wave = sd[wid]

	if not wave then

		log.error("failed to start combat, invalid wave id")

		return false

	end



	local wd = monstergroups[wave]

	if not wd then

		log.error("failed to start combat, invalid wave data, no form found")

		return false

	end



	for fpos, mid in ipairs(wd) do

		if mid>0 then

			local m = scene:addM(mid)

			if m then

				m:setPosition(1, 1, fpos)

			end

		end

	end

end



function Scene.onEndCombat(scene)

	log.info("scene end combatting: ")

end