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Code: Select all

local function is_pole_probably_powered(pole)
    local stats = pole.electric_network_statistics
    if not stats then return false end

    -- If energy is flowing in or out, network is alive
    local flow_in, flow_out = 0, 0
    for _, v in pairs(stats.input_counts) do flow_in = flow_in + v end
    for _, v in pairs(stats.output_counts) do flow_out = flow_out + v end
    if flow_in > 0 or flow_out > 0 then
        return true -- Power is moving
    end

    local radius = 7.5 -- max wire connection range for vanilla medium pole
    local accumulators = pole.surface.find_entities_filtered{
        area = {
            {pole.position.x - radius, pole.position.y - radius},
            {pole.position.x + radius, pole.position.y + radius}
        },
        type = "accumulator"
    }
    for _, acc in pairs(accumulators) do
        if acc.energy and acc.energy > 1 then
            return true -- At least one accumulator has charge
        end
    end

    -- No evidence of power
    return false
end

Code: Select all

if power_was_flowing_recently or any_accumulator_has_charge then
  return true -- probably powered
else
  return false -- probably not powered