Mobfarm_Automatic_Door

os.loadAPI("ocs/apis/sensor")

-- the location of the redstone lamp relative to the sensor
local offset = {
    X = 0,
    Y = -2,
    Z = 0,
}

-- how close a player has to be to activate the lamp
local radius = 5

 -- find the distance from the player position to the offset
function distance(pos)
    local xd = pos.X - offset.X
    local yd = pos.Y - offset.Y
    local zd = pos.Z - offset.Z
    return math.sqrt(xd*xd + yd*yd + zd*zd)
end

function zu()
    for i = 1,5 do
        rs.setOutput("right", true)
        sleep(0.5)
        rs.setOutput("right", false)
        sleep(0.5)
    end
end

function auf()
    for i = 1,5 do
        rs.setOutput("left", true)
        sleep(0.5)
        rs.setOutput("left", false)
        sleep(0.5)
    end
end

local proximity = sensor.wrap("top")
while true do
    local signal = false
    local targets = proximity.getTargets()
    for k, v in pairs(targets) do
        if not rs.getInput("bottom", true) then
            if k ~= "MagmaLP" then
                zu()
            end
        end
        if distance(v.Position) < radius then
            if k == "MagmaLP" then
                auf()
            end
        end
    end

    if not rs.getInput("front", true) then
        zu()
    end

    sleep(1)
end