cutter test

local w = 10
local l = 15
local h = 8
local cur_x = 5
local cur_y = 0
local cur_z = 5
local storage_x = 5
local storage_y = 1
local storage_z = 6

function Refuel()
    if(turtle.getFuelLevel() <= 400) then
        turtle.select(1)
        local fuel = turtle.getItemCount(1) - 1
        print("Refueling " .. fuel .. " units")
        turtle.refuel(fuel)
    end
end

function Mine(blocks)
    --print("Mining " .. blocks .. " blocks")
    for y = 1,blocks,1 do
        while(turtle.detect()) do
            turtle.dig()
            sleep(0.5)
        end
        turtle.forward()
        cur_y = cur_y + 1
        while(turtle.detectUp()) do
            turtle.digUp()
            sleep(0.5)
        end
        turtle.digDown()
    end
end

function checkLevelFinished()
    if(cur_x == w) then
        print("Finished level, heading home")
        if(cur_x % 2 == 0) then
            turtle.turnRight()
            turtle.turnRight()
            Dump()
        else
            turtle.turnRight()
            turtle.turnRight()
            for i = 1,l-1,1 do
                turtle.forward()
                cur_y = cur_y - 1
            end
            turtle.turnLeft()
            turtle.turnLeft()
            Dump()
        end
        return true
    else
        return false
    end
end

function TryDumping()
    if(turtle.getItemCount(15) > 0) then
        Dump()
        GoTo(cur_x - storage_x, cur_z - storage_z)
        return true
    else
        return false
    end
end

function GoTo(x, z)

    if(z > 0) then
        while(z > 0) do
            if(turtle.detectDown()) then
                turtle.digDown()
            end
            turtle.down()
            z = z - 1
        end
    else
        while(z < 0) do
            if(turtle.detectUp()) then
                turtle.digUp()
            end
            turtle.up()
            z = z + 1
        end
    end

    if(x > 0) then
        turtle.turnRight()
        while(x > 0) do
            if(turtle.detect()) then
                turtle.dig()
            end
            turtle.forward()
            x = x - 1
        end
    else
        turtle.turnLeft()
        while(x < 0) do
            if(turtle.detect()) then
                turtle.dig()
            end
            turtle.forward()
            x = x + 1
        end
    end
end

function Dump()
    print("Going home to dump items into storage")
    local offset_x = cur_x - storage_x
    if(offset_x < 0) then
        offset_x = offset_x * (-1)
        turtle.turnRight()
    else
        turtle.turnLeft()
    end
    for i = offset_x,2,-1 do
        turtle.forward()
    end
    local offset_z = cur_z - storage_z
    if(offset_z < 0) then
        offset_z = offset_z * (-1)
        for i = offset_z,1,-1 do
            turtle.down()
        end
    else
        for i = offset_z,0,-1 do
            turtle.up()
        end
    end
    if(cur_x - storage_x < 0) then
        turtle.turnRight()
    else
        turtle.turnLeft()
    end
    print("Dumping items into storage")
    local turned = false
    local i = 16
    while(i >= 2) do
        turtle.select(i)
        while(turtle.getItemCount(i) <= 0) do
            i = i - 1
            turtle.select(i)
        end
        local item = string.sub(turtle.getItemDetail(i).name, 11)
        if(item == "coal") then
            turtle.transferTo(1, turtle.getItemCount(i))
        else
            turtle.drop()
        end
        i = i - 1
    end
    turtle.turnRight()
    turtle.turnRight()
end

function RotateRight()
    --print("Rotating right")
    turtle.turnRight()
    Mine(1)
    turtle.turnRight()
end

function RotateLeft()
    --print("Rotating left")
    turtle.turnLeft()
    Mine(1)
    turtle.turnLeft()
end

function Run()

    while(cur_z > 2) do
        if(turtle.detectUp()) then
            turtle.digUp()
        end
        turtle.up()
        cur_z = cur_z - 1
    end
    if(turtle.detect()) then
        turtle.dig()
    end
    turtle.forward()
    turtle.turnLeft()
    while(cur_x > 1) do
        if(turtle.detect()) then
            turtle.dig()
        end
        turtle.forward()
        cur_x = cur_x - 1
    end
    turtle.turnRight()

    while(cur_z <= h - 1) do
        print("Starting to mine levels " .. cur_z - 1 .. ", " .. cur_z .. ", " .. cur_z + 1 .. " of " .. h)
        while(cur_x <= w) do
            Refuel()
            Mine(l - 1)
            if(checkLevelFinished()) then break end
            RotateRight()
            cur_x = cur_x + 1
            Refuel()
            Mine(l - 1)
            if(checkLevelFinished()) then break end
            RotateLeft()
            TryDumping()
        end

        if(cur_z == h - 1) then
            print("Finished work, heading home")
            Dump()
            turtle.up()
            turtle.forward()
            turtle.turnRight(2)
            break
        end

        GoTo(1, cur_z + 2)

        if(h % 2 == 0) then
            turtle.down()
            turtle.digDown()
            cur_z = cur_z + 1
        end
        cur_x = 1
    end

    print("Finished mining a " .. w .. "x" .. l .. "x" .. h .. " area")
end

Run()