autoMine

--Automatic mining program that has turtles dig a 2x3 spur shaft to the left off of a main shaft until inventory is full. Turtle then exits the spur shaft until it hits the wall of the main shaft, heads towards a resupply chest, then empties its contents into a dump chest before heading back through the main shaft to start a new spur.

--TODO
--make it so turtles stop at each spur twice to mine

--allow turtles to mine veins of ores

--switch main from 2Wx6H to 1Wx2H

--make function to check for torches in slot 16 and display error message if not



--digs forward and repeats in case of gravel
function gravel()
    while turtle.detect() do
        turtle.dig()
    end
end

--digs up and repeats in case of gravel
function gravelUp()
    local i = 0
    while i < 10 do
        turtle.digUp()
        i = i + 1
    end
end

--places a torch 2 blocks high on the Right
function placeTorch()
    turtle.select(16)
    turtle.placeUp()
end

--looks for fuel if low and refuels
function getFuel()
    if turtle.getFuelLevel() < 90 then
        local i = 1
        while i < 16 do
            turtle.select(i)
            turtle.refuel()
            i = i + 1
        end
    end
print("refueled")
end

--digs a 1Wx2H tunnel
function spur()
    gravel()
    turtle.forward()
    gravelUp()
end

--digs a 2 wide by 3 tall tunnel
function standard()
    gravel()
    turtle.forward()
    turtle.turnLeft()
    gravel()
    gravelUp()
    turtle.up()
    gravel()
    gravelUp()
    turtle.up()
    gravel()
    turtle.down()
    turtle.down()
    gravel()
    turtle.turnRight()
print ("standard")
end

--drops all items in a given slot
function dropStack()
    local s = 0
    while s < 64 do
        turtle.drop()
        s = s + 1
    end
end

--function to drop all items except slot in 16
function dropEverything()
    local t = 1
    while t < 16 do
        turtle.select(t)
        dropStack()
        t = t + 1
    end
print("everything dropped")
end

--turtle checks amount less 64 of torches it has and takes the remainder from supply chest
function reSupply()
    local supply = 0
    supply = 64 - turtle.getItemCount(16)
    turtle.suck(supply)
print(turtle.getItemCount(16))
print("torches left")
end

-- returns the turtle back to base
function returnToBase()
print("returning to base")
    -- variable to allow turtle to travel back to original location
    local path = 0
    turtle.turnLeft()
    turtle.turnLeft()
-- exits spur shaft
    repeat
        turtle.forward()
    until turtle.detect()
    turtle.turnRight()
-- heads down main shaft to supply/dump chest. supply on bottom, dump on top
    repeat
        turtle.forward()
        path = path + 1
    until turtle.detect()
    reSupply()
    turtle.up()
    dropEverything()
    turtle.down()
    turtle.turnRight()
    turtle.turnRight()
--heads back down main shaft
    while path > 0 do
        turtle.forward()
        path = path - 1
    end
--makes main shaft 2 blocks longer
    local q = 0
    while q < 2 do
        standard()
        q = q + 1
    end
    turtle.turnLeft()
end

--checks if inventory is full and if true heads back to base
function checkFull()
    local full = 0
    local g = 1
    while g < 16 do
        if turtle.getItemCount(g) > 0 then
            full = full + 1
   print(full)
   print("full")
   end
  g = g + 1
    end
    if full <= 15 then
        returnToBase()
    end
end

--main
getFuel()
while turtle.getFuelLevel() > 15 do
    local i = 0
    while i < 5 do
  print("i should dig")
    spur()
        i = i + 1
    end
    getFuel()
    placeTorch()
    checkFull()
end