Coffre fort (ComputerCraft)

ecran=peripheral.find("monitor")
ecran.setTextScale(0.5)
ecran.clear()
ecran.setCursorPos(1,1)
ecran.blit("               ","fffffffffffffff","000888000888000")
ecran.setCursorPos(1,2)
ecran.blit(" 1  2  3  4  5 ","fffffffffffffff","000888000888000")
ecran.setCursorPos(1,3)
ecran.blit("               ","fffffffffffffff","000888000888000")
ecran.setCursorPos(1,4)
ecran.blit("               ","fffffffffffffff","888000888000888")
ecran.setCursorPos(1,5)
ecran.blit(" 6  7  8  9  0 ","fffffffffffffff","888000888000888")
ecran.setCursorPos(1,6)
ecran.blit("               ","fffffffffffffff","888000888000888")

code=window.create(ecran,1,9,15,2,true)

fermer=window.create(ecran,1,8,15,2,true)
fermer.setCursorPos(2,1)
fermer.write("Entrer code")
fermer.setCursorPos(2,2)
fermer.write("pour ouvrir")

entrer=window.create(ecran,1,8,15,2,true)
entrer.setCursorPos(2,1)
entrer.write("Entrer code")
entrer.setCursorPos(2,2)
entrer.write("pour fermer")





redstone.setOutput("left", false)
ouvert=true
combien=0
mdp=""
mdp2=""
mdpAff=""

while true do
    event, side, xPos, yPos = os.pullEvent("monitor_touch")
    if yPos<7 then
        chiffre=math.ceil(xPos/5)
        if yPos>3 then
            chiffre=chiffre+5
            if chiffre==10 then chiffre=0 end
        end
        if ouvert then
            mdp=mdp..tostring(chiffre)
            combien=combien+1
            mdpAff=mdpAff.."X"
            code.clear()
            code.setCursorPos(5,1)
            code.write(mdpAff)
            if combien==4 then
                fermer.redraw()
                ouvert=false
                mdp2=""
                mdpAff=""
                redstone.setOutput("left", true)
                combien=0
            end
        else
            mdp2=mdp2..tostring(chiffre)
            combien=combien+1
            mdpAff=mdpAff.."X"
            code.clear()
            code.setCursorPos(5,1)
            code.write(mdpAff)
            if combien==4 then
                if mdp2==mdp then
                    entrer.redraw()
                    mdp=""
                    redstone.setOutput("left", false)
                    ouvert=true
                else
                    fermer.redraw()
                    mdp2=""
                end

                mdpAff=""
                combien=0
            end
        end
    end


end