TrainSignalSystem API

----/ TrainSignalSystem class /---------------------------------------------


local instances = {}


--/ constructors /--


function new(id1, id2, id3)
    local self = {}
    self.onSensorId = id1
    self.offSensorId = id2
    self.signalId = id3
    self.isOn = false
    return self
end


--/ functions /--


function findFromComputerId(id)
    for _, tss in pairs(instances) do
        if tss.onSensorId == id or tss.offSensorId == id or tss.signalId == id then
            return tss
        end
    end
end


----/ linked computer ids /---------------------------------------------


--[[
    In each array,
    the first id is the computer linked to the activating sensor,
    the second id is the computer linked to the deactivating sensor,
    and the third id is the computer linked to the signal light
]]

local linkedIds = {
    {120, 114, 113},
}


----/ make systems from linked ids /---------------------------------------------


for _, list in pairs(linkedIds) do
    local trainSignalSystem = new(unpack(list))
    table.insert(instances, trainSignalSystem)
end