Shearer

sleepInterval = 400

if not turtle then
    error("You need a turtle!")
end

if fs.exists("gbang") then
    os.loadAPI("gbang")
else
    error("You need the gbang API!")
end

local function shear()
    if turtle.getFuelLevel() < 64 then
        print(gbang.getTime().." Fuel Level Too low to shear... waiting for recharge")
        while true do
            sleep(60)
            if turtle.getFuelLevel() >= 64 then
                print(gbang.getTime().." Fuel level has reached enough to shear")
                break
            end
        end
    end
    num = 0
    print(gbang.getTime().." Shearing TIEM")
    for i=1,8 do
        turtle.turnLeft()
        turtle.forward()
        num = num+1
        turtle.select(num)
        turtle.attack()
        turtle.turnRight()
        turtle.turnRight()
        turtle.forward()
        turtle.forward()
        num = num+1
        turtle.select(num)
        turtle.attack()
        turtle.back()
        turtle.turnLeft()
        turtle.forward()
        turtle.forward()
    end
    while turtle.back() do
        turtle.back()
    end
    turtle.turnRight()
    turtle.turnRight()
    for i=1,16 do
        turtle.select(i)
        turtle.drop()
    end
    turtle.turnRight()
    turtle.turnRight()
    turtle.select(1)
    return true
end

while true do
    os.startTimer(sleepInterval)
    local event = {os.pullEvent()}
    if event[1] == "timer" then
        shear()
    elseif event[1] == "char" and event[2]:lower() == "s" then
        shear()
    elseif event[1] == "char" and event[2]:lower() == "f" then
        print(gbang.getTime().." Current Fuel Level: "..turtle.getFuelLevel())
    elseif event[1] == "char" and event[2]:lower() == "c" then
        print()
        print("Please enter the dest. fuel level: ")
    aInput = tonumber(read())
    if aInput <= turtle.getFuelLevel() then
        while true do
            print()
            print("Turtle already at or higher than that fuel level!")
            print("Please enter the dest. fuel level: ")
            aInput = tonumber(read())
            if aInput > turtle.getFuelLevel() then
                break
            end
        end
    end
    answer = aInput-turtle.getFuelLevel()
    print()
    if answer/20 >= 3600 then
        print("It'll take "..math.floor((answer/20)).."sec ("..math.floor((answer/20/3600)).."hr) to get to fuel level "..aInput)
    else
        print("It'll take "..math.floor((answer/20)).."sec to get to fuel level "..aInput)
    end
    end
end