Turtle mob killer and enchanter v1.12

local enchantWithLevel = 30
local chestDir = "dropDown"
local enchantChestSuck = "suckUp"
local enchantChestDrop = "dropUp"


m = peripheral.wrap("right")
m.setAutoCollect(true)
local work = true

function drop_all_items()
    for i = 1, 16 do
        if turtle.getItemCount(i)~=0 then
            turtle.select(i)
            turtle[chestDir]()
        end
    end

    turtle.select(1)
end

function getFirstEmptySlot()
    for i = 1, 16 do
        if turtle.getItemCount(i)==0 then
            return i
        end
    end
    print("[SEVERE] Turtle was full!")
    drop_all_items() --drop all items if the turtle is full
end

function validEnchantLevel(x)
    if x>=1 and x<=30 then
        print("Yes")
        return true
    end
    print("No")
    return false
end

function enchant(lvl)
    if m.getLevels()>=lvl then
        if turtle.suckUp() then
            turtle.select(getFirstEmptySlot()-1)
            print(getFirstEmptySlot())
            turtle.dropUp(turtle.getItemCount(getFirstEmptySlot()-1)-1)
            if m.enchant(lvl) then
                print("Successfully enchanted an item from chest!")
            else
                print("Failed to enchant an item from chest!")
            end

            turtle.dropUp()
            turtle.select(1)
            return true
        else
            print("No item in the enchantment chest!")
        end
    end
    return false
end

function killndrop()
    local count = 0
    while os.pullEvent("start") do
        while work do
            if turtle.attack() then
                count = count + 1
                if count>=50 then
                    drop_all_items()
                    enchant(enchantWithLevel)
                    count = 0
                end
                sleep(.25)
            else
                sleep(.5)
            end
        end
        print("Stopped killing these bitches :(")
    end
end

function keyInput()
sleep(.1); os.queueEvent("start")
local enchantWithLevel = enchantWithLevel
    while true do
        local event, char = os.pullEvent("char")
        if char == "s" then
            print("Stopping!")
            work = false
            sleep(2)
            break
        elseif char == "d" then
            print("Dropping items...")
            count = 0
            drop_all_items()
            count = 0
        elseif char == "n" then
            if m.getLevels()>=1 then
                print("Enchanting an item...")
                work = false
                sleep(1)
                print("\nChoose level to enchant with:")
                print("Use arrows on your keyboard to select")
                print("[DOWN]   -1 level | +1 level   [UP]")
                print("<-   -5 levels | +5 levels   ->")
                print("Press ENTER to enchant with chosen level")
                print("Current level: ".. tostring(m.getLevels()).." | Level chosen: "..tostring(enchantWithLevel))

                local runIt
                while true do --do until the loop will break
                    local event, key = os.pullEvent("key")
                    if key == 28 then --Enter
                        if validEnchantLevel(enchantWithLevel) then
                            if m.getLevels()>=enchantWithLevel then
                                if m.enchant(enchantWithLevel) then
                                    print("Sucessfully enchanted!")
                                    break
                                elseif enchant(enchantWithLevel) then
                                    print("Sucessfully enchanted!")
                                    break
                                else
                                    print("Couldn't find an item to enchant!")
                                    print("Put it into the right chest or currently selected slot!")
                                end
                            else
                                print("You don't have enough levels to enchant: \""..tostring(m.getLevels()).."\"")
                            end
                        end
                        print("Press ESCAPE to exit the enchanting menu")
                    elseif key == 200 then -- Arrow up
                        if validEnchantLevel(enchantWithLevel + 1) then
                            enchantWithLevel = enchantWithLevel + 1
                            print("Currently selected level: "..enchantWithLevel)
                        else
                            print("Invalid enchantment level: "..(enchantWithLevel + 1))
                        end
                    elseif key == 208 then -- Arrow down
                        if validEnchantLevel(enchantWithLevel - 1) then
                            enchantWithLevel = enchantWithLevel - 1
                            print("Currently selected level: "..enchantWithLevel)
                        else
                            print("Invalid enchantment level: "..(enchantWithLevel - 1))
                        end
                    elseif key == 203 then -- Arrow left
                        if validEnchantLevel(enchantWithLevel - 5) then
                            enchantWithLevel = enchantWithLevel - 5
                            print("Currently selected level: "..enchantWithLevel)
                        else
                            print("Invalid enchantment level: "..(enchantWithLevel - 5))
                        end
                    elseif key == 205 then -- Arrow right
                        if validEnchantLevel(enchantWithLevel) then
                            enchantWithLevel = enchantWithLevel + 5
                            print("Currently selected level: "..enchantWithLevel)
                        else
                            print("Invalid enchantment level: "..(enchantWithLevel + 5))
                        end
                    elseif key==1 or key==18 then -- ESCAPE
                        print("Continuing...")
                        break
                    else
                        print("You pressed the wrong key!")
                    end
                end
            else
                print("You don't have enough levels to enchant something!")
            end
            print("Continuing...")
            work = true --return the state to "true" if it was set to false temporarily
            os.queueEvent("start")
        end
    end
end

if not validEnchantLevel(enchantWithLevel) then
    print("You selected an invalid enchant level: \""..tostring(enchantWithLevel).."\"\nStopping...")
    sleep(5)
    error()
end

print("Keys:")
print("D - Urgently drop items")
print("N - Enchant an item")
print("S - Stop the turtle and exit")


parallel.waitForAny(keyInput, killndrop)

--by VADemon