Sandai's NeoMiner 0.1

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-- Sandai's NeoMiner                 --
-- "It's not a bug, it's a feature!" --
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local program_version = "0.1"
local min_torch_distance = 6

local whitelisted_items_fuel = {
    -- Fuel items
    "minecraft:coal",
    "minecraft:blaze_rod",
    "minecraft:lava_bucket",
}

local whitelisted_items_misc = {
    -- misc items
    "minecraft:torch",
    "minecraft:chest"
}


function is_fuel_item_whitelisted(item_id) -- returns true if the item given is in the whitelisted list
    for current_item in whitelisted_items_fuel do
        if item_id == current_item then
            return true

        else
            return false
        end
    end
end


function is_misc_item_whitelisted(item_id) -- returns true if the item given is in the whitelisted list
    for current_item in whitelisted_items_misc do
        if item_id == current_item then
            return true

        else
            return false
        end
    end
end


function refuel_turtle()
    for i = 1, 16 do -- For slot 1 to 16...
        turtle.select(i) -- Select slot

        if turtle.getItemCount() > 0 then -- if there is an item there...

                if is_item_whitelisted(turtle.getItemDetail(i).name) == true then -- If the item is whitelisted...
                    turtle.refuel()
                    print("[INFO]: The turtle has been refueled!")

                    break
                end

        elseif i == 16 then
                print("[WARN]: No fuel found !")
                break
        end
    end
end



function break_3x3()
    -- breaks a 3x3 area of blocks in front of it,
    -- We're assuming that the turtle is in the middle-ground block

    turtle.dig()
    turtle.forward()

    for i=1,3 do -- Each iteration is 1x3 blocks

        turtle.turnLeft()
        turtle.dig()

        turtle.turnRight()
        turtle.turnRight()
        turtle.dig()

        turtle.turnLeft()
        turtle.up()

    end

    turtle.down()
    turtle.down() -- The turtle is now on the ground. (middle-ground block)

end

function check_if_turtle_full()
    -- Scans the inventory, if it's full, then it will place a chest
    -- Then dump all of it's items in it

    if turtle.getItemCount(15) > 0 then -- If the slot 15 has an item, then...
        -- We scan the inventory for chests
        for i=1,16 do

            if turtle.getItemDetail(i).name == "minecraft:chest" then -- If a chest was detected...
                turtle.turnLeft()
                turtle.turnLeft()
                turtle.forward()
                turtle.turnRight()
                turtle.turnRight()

                turtle.up()
                turtle.select(i)
                turtle.placeDown() -- Place the chest down

                for item=1,16 do -- Drop all items without whitelisted ones
                    turtle.select(item)

                    if is_fuel_item_whitelisted(turtle.getItemDetail(item).name) == true then
                        -- If the current item is whitelisted, do nothing


                    elseif is_misc_item_whitelisted(turtle.getItemDetail(item).name) == true then
                        -- If the current item is whitelisted, do nothing

                    else
                        -- The item is not whitelisted
                        turtle.dropDown()
                    end

                turtle.forward()
                turtle.down()

                end

            else
                print("==> There is no chests in the inventory!")
            end
        end
    end
end


function drop_all_cobblestone()
    for i=1,16 do
        if turtle.getItemDetail(i).name == "minecraft:cobblestone" then -- If the item is cobblestone, then...
            turtle.select(i)
            turtle.dropDown()
        end
    end
end

function place_torch() -- The turtle will place a torch in the upper-right block (wall side)
    -- Here we're assuming that the turtle is on the middle-ground block.
    turtle.up()
    turtle.turnRight()

    for item=1,16 do -- Loops through the inventory to search for torches.
        if turtle.getItemDetail(item).name == "minecraft:torch" then -- If the item is a torch
            turtle.select(item)
            turtle.place() -- Place the torch on the wall
        end
    end

    turtle.turnLeft()
    turtle.down()
end

function main()
    -- Starting point of the program
    print("Sandai's NeoMiner [v"..program_version.."]")
    print("Number of blocks to mine : ")
    local blocks_to_mine = read().tonumber() -- cast the user's input to int
    local actual_torch_distance = 0 -- The actual distance to the nearest torch

    print("[INSTRUCTIONS] :")
    print("==> Items to have : chest, torches, coal/charcoal")
    print("==> Items MUST be in the first slots of the turtle!")
    print("Press [ENTER] to start mining...")
    read()

    for mining_status=1,blocks_to_mine do
        term.setCursorPos(1,1)
        term.clear()

        print("[STATUS] : Mining...")
        print("[MINING_STATUS]: ["..mining_status.."/"..blocks_to_mine.."] blocks")

        break_3x3() -- breaks a 3x3 area of blocks, then return at the middle-ground block.

        if turtle.getFuelLevel() <= 100 then -- if fuel level is behind 100 then refuel the turtle.
            refuel_turtle()

        end

        drop_all_cobblestone()
        check_if_turtle_full()
        refuel_turtle()

        if actual_torch_distance >= min_torch_distance then -- If we need to place a torch...
            place_torch()
            actual_torch_distance = 0
        end

        actual_torch_distance = actual_torch_distance + 1
    end
    print("Done!")
end

main()