tunnel_builder.lua

local _coord = coord.LLtoLO(37.748611, 245.146667) -- location of the tunnel in latitude (north) / longitude (east)

local _w = 15 -- width of building
local _d = 28 -- depth of building

local _width = _w * 3 -- width of the tunnel (must be a multiple of _w)
local _length = 250 --length of the tunnel in segments
local _baseHeight = 1 -- height of the tunnel in segments, before the tapering starts

for x=0,_length do
    for i=0,_width / _w + _baseHeight do
        for j=0,1 do
            local _y = _coord.z
            if (j > 0)
            then
                _y = _y + _width + _w
            end

            if ( i > _baseHeight)
            then
                local _shift = (i - _baseHeight) * (_w / 2)
                if (j > 0)
                then
                    _shift = _shift * -1
                end

                _y = _y + _shift
            end

            local _container = {
                ["category"] = "Fortifications",
                ["shape_name"] = "r_vok_sd",
                ["type"] = "Railway station",
                ["rate"] = 100,
                ["y"] = _y,
                ["x"] = _coord.x + x * _d,
                ["name"] = "tunnel-" .. j .. "-" .. i .. "-" .. x,
                ["heading"] = 0
            }

            coalition.addStaticObject(country.id.USA, _container)
        end
    end
end