turtle selector test

function numberSelector()
    local function selectNext(newSelect)
        if newSelect >= 1 and newSelect <= 16 then
            turtle.select(newSelect)
        end
    end

    local function ifKey(events,nKey,fn,...)
        if events[1] == "key" and events[2] == tonumber(nKey) then
            fn(...)
        end
    end

    local bRunning = true
    while bRunning do
        local events = { os.pullEvent("key") }
        local newSelect
        local selected = turtle.getSelectedSlot()

        ifKey(events,203,function() newSelect = selected - 1 ; selectNext(newSelect) ; end)
        ifKey(events,205,function() newSelect = selected + 1 ; selectNext(newSelect) ; end)
        ifKey(events,200,function() newSelect = selected - 4 ; selectNext(newSelect) ; end)
        ifKey(events,208,function() newSelect = selected + 4 ; selectNext(newSelect) ; end)
        ifKey(events,28,function() bRunning = false ; end)

        for i = 2,13 do
            ifKey(events,i,function() selectNext(i-1) end)
        end
        for i = 26,27 do
            ifKey(events,i,function() selectNext(i-13) end)
        end
        for i = 39,40 do
            ifKey(events,i,function() selectNext(i-24) end)
        end
    end
    return turtle.getSelectedSlot()
end

print(numberSelector())