/advtrains/textures/

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-- Ks signals
-- Can display main aspects (no Zs) + Sht

-- Note that the group value of advtrains_signal is 2, which means "step 2 of signal capabilities"
-- advtrains_signal=1 is meant for signals that do not implement set_aspect.

local setaspectf = function(rot)
 return function(pos, node, asp)
	if asp.main == 0 then
		if asp.shunt then
			advtrains.ndb.swap_node(pos, {name="advtrains_signals_ks:hs_shunt_"..rot, param2 = node.param2})
		else
			advtrains.ndb.swap_node(pos, {name="advtrains_signals_ks:hs_danger_"..rot, param2 = node.param2})
		end
	else
		if asp.dst ~= 0 and asp.main == -1 then
			advtrains.ndb.swap_node(pos, {name="advtrains_signals_ks:hs_free_"..rot, param2 = node.param2})
		else
			advtrains.ndb.swap_node(pos, {name="advtrains_signals_ks:hs_slow_"..rot, param2 = node.param2})
		end
	end
 end
end


local suppasp = {
		main = {0, 6, -1},
		dst = {0, false},
		shunt = nil,
		proceed_as_main = true,
		info = {
			call_on = false,
			dead_end = false,
			w_speed = nil,
		}
}

--Rangiersignal
local setaspectf_ra = function(rot)
 return function(pos, node, asp)
	if asp.shunt then
		advtrains.ndb.swap_node(pos, {name="advtrains_signals_ks:ra_shuntd_"..rot, param2 = node.param2})
	else
		advtrains.ndb.swap_node(pos, {name="advtrains_signals_ks:ra_danger_"..rot, param2 = node.param2})
	end
	local meta = minetest.get_meta(pos)
	if meta then
		meta:set_string("infotext", minetest.serialize(asp))
	end
 end
end

local suppasp_ra = {
		main = { false },
		dst = { false },
		shunt = nil,
		proceed_as_main = false,
		
		info = {
			call_on = false,
			dead_end = false,
			w_speed = nil,
		}
}

advtrains.trackplacer.register_tracktype("advtrains_signals_ks:hs")
advtrains.trackplacer.register_tracktype("advtrains_signals_ks:ra")
advtrains.trackplacer.register_tracktype("advtrains_signals_ks:sign")
advtrains.trackplacer.register_tracktype("advtrains_signals_ks:mast")

for _, rtab in ipairs({
		{rot =  "0", sbox = {-1/8, -1/2, -1/2,  1/8, 1/2, -1/4}, ici=true},
		{rot = "30", sbox = {-3/8, -1/2, -1/2, -1/8, 1/2, -1/4},},
		{rot = "45", sbox = {-1/2, -1/2, -1/2, -1/4, 1/2, -1/4},},
		{rot = "60", sbox = {-1/2, -1/2, -3/8, -1/4, 1/2, -1/8},},
	}) do
	local rot = rtab.rot
	for typ, prts in pairs({
			danger = {asp = advtrains.interlocking.DANGER, n = "slow", ici=true},
			slow   = {asp = { main =  6, proceed_as_main = true} , n = "free"},
			free   = {asp = { main = -1, proceed_as_main = true} , n = "shunt"},
			shunt  = {asp = { main =  0, shunt = true} , n = "danger"},
		}) do
		minetest.register_node("advtrains_signals_ks:hs_"..typ.."_"..rot, {
			description = "Ks Main Signal",
			drawtype = "mesh",
			mesh = "advtrains_signals_ks_main_smr"..rot..".obj",
			tiles = {"advtrains_signals_ks_mast.png", "advtrains_signals_ks_head.png", "advtrains_signals_ks_head.png", "advtrains_signals_ks_ltm_"..typ..".png"},
			
			paramtype="light",
			sunlight_propagates=true,
			light_source = 4,
			
			paramtype2 = "facedir",
			selection_box = {
				type = "fixed",