Minecraft>MoonDoor

while true do
        event, id, text = os.pullEvent("redstone")
    valPlayer = redstone.getAnalogInput("bottom")
    valOxygen = redstone.getInput("right")
    if valPlayer >= 12 and valOxygen == true then
        redstone.setOutput("top", true)
    elseif valOxygen == false or valPlayer < 12 then
        redstone.setOutput("top", false)
    end
end