strip

num1 = 16
num2 = 16
num3 = 30

loc = {1,1}
face = "north"
resumeloc = {1,0,"north"}

function search(x)
    for i=1,16,1 do
        if turtle.getItemDetail(i) ~= nil then
            if turtle.getItemDetail(i).name == x then
                return i
            end
        end
    end
end

function fuelCheck()
    local a = num1*num2
    local b = turtle.getFuelLevel()
    if a>b then
        return false
    else
        return true
    end
end

function refuel()
    local slot = search("minecraft:coal")
    if slot == nil then
        print("i got no fuel")
        turtle.select(1)
        return false
    else
        turtle.select(slot)
        turtle.refuel(turtle.getItemCount())
        turtle.select(1)
        return true
    end
end
function locUpdate()
    if face == "north" then
        loc[2] = loc[2] + 1
    elseif face == "south" then
        loc[2] = loc[2] - 1
    elseif face == "east" then
        loc[1] = loc[1] + 1
    elseif face == "west" then
        loc[1] = loc[1] - 1
    end
end
function dig(x)
    for i=2, x, 1  do
        turtle.dig()
        while turtle.detect() do
            turtle.dig()
        end
        turtle.forward()
        locUpdate()
        turtle.digUp()
        turtle.digDown()
        if turtle.getItemDetail(16) ~= nil then
            refuel()
            dump()
        end
    end
end

function bigDig(x,y)

    for i=1, x , 1 do
        dig(y)
        if i~=x then
            if face == "north" then
                turtle.turnRight()
                face = "east"
                dig(2)
                turtle.turnRight()
                face = "south"
            elseif face == "south" then
                turtle.turnLeft()
                face = "east"
                dig(2)
                turtle.turnLeft()
                face = "north"
            end
        end
    end
    goHome(loc)
    dump()
end


function goHome(x)
    if face == "south" then
        turtle.turnRight()
    elseif face == "north" then
        turtle.turnLeft()
    elseif face == "east" then
        turtle.turnLeft()
        turtle.turnLeft()
    end
    face = "west"
    if x[1] ~= 1 then
        for i=2,x[1],1 do
            turtle.forward()
            locUpdate()
        end
    end
    turtle.turnLeft()
    face = "south"
    for i=2, x[2], 1 do
        turtle.forward()
        locUpdate()
    end
    turtle.turnLeft()
    turtle.turnLeft()
    face = "north"
end

function dump()
    turtle.select(1)
    turtle.placeDown()
    for i=1, 16, 1 do
        turtle.select(i)
        turtle.dropDown()
    end
    turtle.select(1)
    turtle.digDown()
end
function setup()
    a = num1*num2*1.75
    if turtle.getItemDetail(1).name ~= "enderstorage:ender_storage" then
        print("ender chest needed in slot 1")
        return false
    end
    if turtle.getFuelLevel()<a then
        return(refuel())
    else
        return true
    end
end
function down3(x)
    turtle.digDown()
    turtle.down()

    for i=1, 2, 1 do
        if turtle.digDown() then
            turtle.down()
        elseif turtle.down() then
        else
            turtle.up()
            x = num3
            return x
        end
    end
   if turtle.digDown() then
   elseif turtle.detectDown() then
       turtle.up()
       x = num3
       return x
   end
end
if setup() then
    for i=1 ,num3 ,1 do
        bigDig(num2,num1)
        down3(i)
    end

    for j=1, 24, 1 do
        turtle.up()
        turtle.up()
        turtle.up()
    end
end