turtle_3x3

local forbidItems = {
    "lavastone",
    "cobblestone",
    "diorite",
    "dirt",
    "gravel",
    "granite",
    "andesite",
    "scoria",
    "marble"
}
function termReset()
    term.clear()
    term.setCursorPos(1,1)
end

function refu()
    turtle.select(1)
    if (turtle.getItemCount() < 1) then
        term.clear()
        print("No fuel!")
        return
    end
    if not (turtle.refuel()) then
        term.clear()
        print("Refuel Error!")
        return
    end
end

function digRound(right)
    while (turtle.detect()) do
        turtle.dig()
    end
    if (right) then
        turtle.turnRight()
        turtle.forward()
        turtle.turnLeft()
    else
        turtle.turnLeft()
        turtle.forward()
        turtle.turnRight()
    end
end

function digRoundSolo()
    while (turtle.detect()) do
        turtle.dig()
    end
end

local limit
while not (tonumber(limit)) do
    termReset()
    print("How far would you like the turtle to dig in forward blocks? Must be number.");
    limit = read()
end
limit = math.floor(tonumber(limit))
local temp = 5
termReset()
print("Make sure turtle is in the bottom left of 3x3")
while (temp > 0) do
    sleep(1)
    temp = temp - 1
end
termReset()
print("running 3x3 mine for " .. limit .. " blocks")
local path = 0
-- refu()
while (path < limit) do
    -- if (turtle.getFuelLevel() < 1) then
    --     refu()
    -- end
    turtle.up()
    turtle.up()
    digRound(true)
    digRound(true)
    digRoundSolo()
    turtle.down()
    digRound(false)
    digRound(false)
    digRoundSolo()
    turtle.down()
    digRound(true)
    digRound(true)
    digRoundSolo()
    turtle.forward()
    turtle.turnLeft()
    turtle.forward()
    turtle.forward()
    turtle.turnRight()
    local slot = 1
    while (slot <= 16) do
        turtle.select(slot)
        local data = turtle.getItemDetail()
        for i, v in pairs(forbidItems) do
            if (data) then
                if string.find(data.name, v) then
                    turtle.dropDown(turtle.getItemCount())
                end
            end
        end
        slot = slot + 1
    end
    path = path + 1
end
termReset()
print("Done! Returning Home")
turtle.turnRight()
turtle.turnRight()
while (path > 0) do
    turtle.forward()
    path = path - 1
end
termReset()
print("Done!")