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-- advtrains_signals_muc_ubahn
-- Signals modeled after the Munich U-Bahn signalling system
-- It reuses the original historic wall signal mesh, but extends it to 4 signal lamps and supports the new signal API only.
-- For a reference of the signals (in German) see: https://www.u-bahn-muenchen.de/betrieb/zugsicherung/signale/
-- Hp4 and Hp5 are not implemented because they do not make sense.
-- Also the speed signals are not yet added (they will be added later)
local all_sigs = {
hp0 = { asp = { main = 0 }, crea = true }, -- halt
hp1 = { asp = { main = -1, proceed_as_main = true } }, -- free full speed
hp2 = { asp = { main = 12, proceed_as_main = true } }, -- slow speed
hp3 = { asp = { main = 0, shunt = true } }, -- shunting
vr0 = { asp = { dst = 0 }, distant = true, crea = true }, -- distant halt/slow
vr1 = { asp = { dst = -1 }, distant = true }, -- distant free
}
local mainaspects = {
{ name = "hp1", description = "Hp1: Full speed" },
{ name = "hp2", description = "Hp2: Reduced Speed" },
{ name = "hp3", description = "Hp3: Shunt" },
}
local dstaspects = {
{ name = "vr1", description = "Vr1: Expect Full speed" },
}
local function applyaspect_main(loc)
return function(pos, node, main_aspect, rem_aspect, rem_aspinfo)
local ma_node = main_aspect.name
if all_sigs[ma_node] and not all_sigs[ma_node].distant then
-- ma_node is fine
elseif main_aspect.halt then
ma_node = "hp0" -- default halt aspect
else
ma_node = "hp1" -- default free aspect
end
advtrains.ndb.swap_node(pos, {name = "advtrains_signals_muc_ubahn:signal_wall_"..loc.."_"..ma_node, param2 = node.param2})
end
end
local function applyaspect_distant(loc)
return function(pos, node, main_aspect, rem_aspect, rem_aspinfo)
local ma_node = "vr0" -- show expect stop by default
if not main_aspect.halt and (not rem_aspinfo or not rem_aspinfo.main or rem_aspinfo.main>12 or rem_aspinfo.main==-1) then
ma_node = "vr1" -- show free when dst is at least 12
end
advtrains.ndb.swap_node(pos, {name = "advtrains_signals_muc_ubahn:signal_wall_"..loc.."_"..ma_node, param2 = node.param2})
end
end
for r,f in pairs(all_sigs) do
for loc, sbox in pairs({l={-1/2, -1/2, -1/4, 0, 1/2, 1/4}, r={0, -1/2, -1/4, 1/2, 1/2, 1/4}, t={-1/2, 0, -1/4, 1/2, 1/2, 1/4}}) do
minetest.register_node("advtrains_signals_muc_ubahn:signal_wall_"..loc.."_"..r, {
drawtype = "mesh",
paramtype="light",
paramtype2="facedir",
walkable = false,
selection_box = {
type = "fixed",
fixed = sbox,
},
mesh = "advtrains_signals_muc_ubahn_wsig_"..loc..".obj",
tiles = {"advtrains_signals_muc_ubahn_"..r..".png"},
drop = f.distant and "advtrains_signals_muc_ubahn:signal_wall_"..loc.."_vr0" or "advtrains_signals_muc_ubahn:signal_wall_"..loc.."_hp0",
description = f.distant and attrans("Munich U-Bahn Distant Signal ("..loc..")") or attrans("Munich U-Bahn Main Signal ("..loc..")"),
groups = {
cracky=3,
not_blocking_trains=1,
save_in_at_nodedb=1,
advtrains_signal = 2,
not_in_creative_inventory = f.crea and 0 or 1
},
light_source = 1,
sunlight_propagates=true,
on_rightclick = advtrains.interlocking.signal.on_rightclick,
can_dig = advtrains.interlocking.signal.can_dig,
after_dig_node = advtrains.interlocking.signal.after_dig,
-- new signal API
advtrains = {
main_aspects = f.distant and dstaspects or mainaspects, -- main aspects only for main
apply_aspect = f.distant and applyaspect_distant(loc) or applyaspect_main(loc),
pure_distant = f.distant,
get_aspect_info = function() return f.asp end,
route_role = f.distant and "distant" or "main"
},
})
end
end
-- Crafting
minetest.register_craft({ -- Main Signal Left as entry recipe
output = "advtrains_signals_muc_ubahn:signal_wall_l_hp0",
type = "shapeless",
recipe = {"advtrains:signal_wall_l_off", "advtrains_interlocking:tcb_node"},
})
minetest.register_craft({ -- Distant Signal Left as entry recipe
output = "advtrains_signals_muc_ubahn:signal_wall_l_vr0",
recipe = {
{"dye:orange","",""},
{"dye:orange","advtrains_signals_muc_ubahn:signal_wall_l_hp0","dye:dark_green"},
{"","","dye:dark_green"}
}
})
for this,nxt in pairs({l = "t", t = "r",r = "l"}) do --Circular crafting for wall-mount signals
minetest.register_craft({ -- Main Signal
output = "advtrains_signals_muc_ubahn:signal_wall_"..nxt.."_hp0",
type = "shapeless",
recipe = {"advtrains_signals_muc_ubahn:signal_wall_"..this.."_hp0"},
})
minetest.register_craft({ -- Distant Signal
output = "advtrains_signals_muc_ubahn:signal_wall_"..nxt.."_vr0",
type = "shapeless",
recipe = {"advtrains_signals_muc_ubahn:signal_wall_"..this.."_vr0"},
})
end
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