test.lua

while true do
rednet.open("top")
id1,msg1 = rednet.receive()
rednet.send(27,msg1 .. "-1")
id2,msg2 = rednet.receive()
if id2 == 27 then
    if msg2 == "ok" then
        rednet.send(27,msg1 .. "-2")
        id3,msg3 = rednet.receive()
        rednet.send(id1,"Il te reste : " .. msg3)
        redstone.setOutput("left",true)
        os.sleep(3)
        redstone.setOutput("left",false)
    else
        rednet.send(id1,"Tu n'as plus de tickets")
    end
else
    rednet.send(id1,"Une erreur c'est produite")
end
end