t

-- Better turtle API by Eriyn

-- Vars :

t = {}
local facing = 0
local x = 0
local y = 0
local z = 0

-- Functions :

function t:tR()
  turtle.turnRight()
  facing = (facing + 1) % 4
  return facing
end

function t:tL()
  turtle.turnLeft()
  facing = facing - 1
  if facing < 0 then
    facing = 3
  end
  return facing
end

function t:up(fuelSlot)
  while turtle.up() == false do
    if turtle.detectUp() then
      turtle.digUp()
    elseif fuelSlot ~= nil then
      t.refuel(fuelSlot)
    elseif fuelSlot == nil or (fuelSlot < 1 or fuelSlot > 16) then
      print("NOPE")
      return
    else
      turtle.attackUp()
    end
  end
  y = y + 1
end

function t:down()
  if turtle.down() then
    y = y - 1
  end
end

function t:refuel(fuelSlot)
  lastSlot = turtle.getSelectedSlot()
  if turtle.getFuelLevel() ~= "unlimited" and turtle.getFuelLevel() < 1 then
    turtle.select(tonumber(fuelSlot))
    refueled = turtle.refuel(1)
    turtle.select(lastSlot)
  end
  return refueled
end

-- Getters & Setters :

function t:getDir()
  return facing
end

function t:getX()
  return x
end

function t:getY()
  return y
end

function t:getZ()
  return z
end