mine.5

local t = turtle

local i = 0
local q = 0
local a = true
local SLOT_COUNT = 16

DROPPED_ITEMS = {
    "minecraft:stone",
    "minecraft:dirt",
    "minecraft:cobblestone",
    "minecraft:sand",
    "minecraft:gravel",
    "minecraft:redstone",
    "minecraft:flint",
    "railcraft:ore_metal",
    "extrautils2:ingredients",
    "minecraft:dye",
    "thaumcraft:nugget",
    "thaumcraft:crystal_essence",
    "thermalfoundation:material",
    "projectred-core:resource_item",
    "thaumcraft:ore_cinnabar",
    "deepresonance:resonating_ore",
    "forestry:apatite"
}


function dropItems()
    print("Purging Inventory...")
    for slot = 1, SLOT_COUNT, 1 do
        local item = t.getItemDetail(slot)
        if(item ~= nil) then
            for filterIndex = 1, #DROPPED_ITEMS, 1 do
                if(item["name"] == DROPPED_ITEMS[filterIndex]) then
                    print("Dropping - " .. item["name"])
                    t.select(slot)
                    t.dropDown()
                end
            end
        end
    end
end

function checkFuel()
    t.select(1)

    if(t.getFuelLevel() < 50) then
        print("Attempting Refuel...")
        for slot = 1, SLOT_COUNT, 1 do
            t.select(slot)
            if(t.refuel(1)) then
                return true
            end
        end

        return false
    else
        return true
    end
end

while i < 25 do
    t.dig()
    t.digUp()
    t.digDown()
    t.forward()
    if i == 24 and a then
        t.turnLeft()
        t.dig()
        t.forward()
        t.turnLeft()
        i = 0
        a = false

    elseif i == 24 and not a then
        t.turnRight()
        t.dig()
        t.forward()
        t.turnRight()
        i = 0
        a = not a
    end
    checkFuel()
    i = i + 1
end