cc_quarry

-- Start of my quarry 'script'.
-- Learning Lua so this may be rough.
-- Idea is to just mine out a Z * X size cube until the turtle hits bottom.

--[[ things to worry about:
-- Fuel levels
-- Inventory levels
-- distance from home
]]--


local __update = false -- Making use of an autoupdater script I found, by ensuring this script is always up to date, and only updates upon request instead of whenever I run it. (May actually end up making something akin to apt, yum, etc.)

local __version = 0.01
-- Some of these are future proof definitions. Small program, and small inefficiencies like extra memory shouldn't hog server resources _too_ much. If I start killing the server I can adjust.
local __home  = 0
local __returnhome = false
local currentX = 0
local currentY = 0
local currentZ = 0

local __paused = false
local __direction = "north"

local function turnWest()
  if __direction == "north" then
    turtle.turnLeft()
    __direction = "west"
  end
  if __direction == "east" then
    turtle.turnRight()
    turtle.turnRight()
    __direction = "west"
  end
  if __direction == "south" then
    turtle.turnRight()
    __direction = "west"
  end
end

local function turnSouth()
  if __direction == "north" then
    turtle.turnRight()
    turtle.turnRight()
  elseif __direction == "east" then
    turtle.turnRight()
  elseif __direction == "west" then
    turtle.turnLeft()
  end
end

local function distanceToHome() -- Simple distance calculation.
  return currentX + currentY + currentZ
end

local function safeFuelLevel(currentX, currentY, currentZ)
  local safeFuelLevel = true
  local safetyCushion = 10
  if turtle.getFuelLevel() <= (distanceToHome() + safetyCushion) then
    safeFuelLevel = false
    print("Debug: fuel level safety trigger flagged.")
  end
  return safeFuelLevel
end

local function tryDropItems()
  for i = 2, 16 do
    turtle.select(i)
    if not turtle.dropUp() then
      -- If we can't drop, we're not at an inventory
      return false
    end
  end
  turtle.select(1)
  return true
end

local function returnHome()
  while currentX > 0 do
    if __direction ~= "west" then
      turtle.turnRight()
    end
    turtle.forward()
  end

  while currentY > 0 do
    if __direction ~= "south" then
      turnSouth()
    end
    turtle.forward()
  end

  while currentZ > 0 do
    turtle.up()
  end

  turnSouth()
  if tryDropItems() ~= true then
    print("Danger Will Robinson! We don't have an inventory!")
  end
end

local function inventoryNotFull()
  if turtle.getItemCount(16) > 0 then
    print("Debug: inventory level safety trigger flagged.")
    return false
  else return true
  end
end

local function fuelAndInventorySafe()
  print("Debug: fuelAndInventorySafe function called.")
  print("Debug: inventoryNotFull() status: " .. tostring(inventoryNotFull()))
  print("Debug: safeFuelLevel() status: " .. tostring(safeFuelLevel(currentX, currentY, currentZ)))
  if inventoryNotFull() ~= true then
    __returnhome = true
    returnHome()
  end
  if safeFuelLevel(currentX, currentY, currentZ) ~= true then
    __returnhome = true
    returnHome()
  end
  return true
end

local function quarry(width, length) --width = x, length = y
  if width == nil then
    width = 0
  end
  if length == nil then
    length = 0
  end

  print("Debug: Sanity Checks")
  local inventoryStatus = inventoryNotFull()
  local fuelStatus = safeFuelLevel(currentX, currentY, currentZ)
  print("Debug: Inventory status: " .. tostring(inventoryStatus))
  print("Debug: Fuel status: " .. tostring(fuelStatus))
  print("Debug: width: " .. tostring(width))
  print("Debug: length: " .. tostring(length))
  print("Debug: currentX: " .. tostring(currentX))
  print("Debug: currentY: " .. tostring(currentY))
  print("Debug: currentZ: " .. tostring(currentZ))

  local reverseY = false
  local reverseX = false

  --[ loop flow
  -- 1. Check if something is in front
  -- 1a. if something is in front. Mine it
  -- 2. Move forward, increment currentY
  -- 3. Repeat 1 and 2 until currentY equals length
  -- 4. turn right if currentX % 2 = 0, else turn left
  -- 4a. repeat step one and 2
  -- 4b. repeat step 4 & 4a
  -- 5. repeat steps 1-4 until currentX equals width
  -- 6. Detect down
  -- 6a. If something is down, mine it
  -- 6b. Move down
  -- 6c. move 180 degrees.
  -- 7. Repeat.
  -- ]
  --
  -- Home logic flow
  -- Fuel? -> Home Distance? -> Full inventory?
  while __returnhome ~= true do
    -- Check for fuel and inventory here?
    -- Sanity check
    print("Debug: __returnhome loop call")

    while currentX < width and currentX >= 0 do
      -- Sanity check
      print("Debug: width loop call")

      -- Fuel and Inventory check.
      --
      if not fuelAndInventorySafe() then
        print("Debug: __returnhome flag triggered in width loop")
        __returnhome = true
        break
      end

      --Debug insanity, while loop is not being entered even though it has the _exact_ same logic as the previous one.
      print("Debug: Y condition check:")
      print("currentY < length: " .. tostring(currentY < length))
      print("currentY >= 0: " .. tostring(currentY >= 0))
      print("Combined condition: " .. tostring(currentY < length and currentY >= 0))

      while currentY < length and currentY >= 0 do
        -- Sanity Debug check
        print("Debug: length loop call")

        -- Fuel and Inventory check.
        --

        if not fuelAndInventorySafe() then
          print("Debug: __returnhome flag triggered in length loop")
          __returnhome = true
          returnHome()
          break
        end

        local success, data = turtle.inspect()
        if success then
          if data.name == "minecraft:bedrock" then
            __returnhome = true
            returnHome()
            break
          end

          turtle.dig()
          turtle.forward()
        else turtle.forward()
        end

        if reverseY == false then
          currentY = currentY + 1
        else currentY = currentY - 1
        end
      end

      print("Debug: Preparing turn. Current direction: " .. __direction)
      if currentX % 2 == 0 then
        print("Debug: Turning right")
        turtle.turnRight()
        __direction = "east"
      else turtle.turnLeft()
        print("Debug: Turning left")
        __direction = "west"
      end
      local success, data = turtle.inspect()
      if success then
        if data.name == "minecraft:bedrock" then
          __returnhome = true
          returnHome()
          break
        end
        turtle.dig()
        turtle.forward()
      else turtle.forward()
      end
      print("Debug: Preparing second turn. Current direction: " .. __direction)
      if currentX % 2 == 0 then
        print("Debug: Turning right part 2")
        turtle.turnRight()
        __direction = "south"
      else turtle.turnLeft()
        print("Debug: Turning left part 2")
        __direction = "north"
      end
      if reverseX == false then
        currentX = currentX + 1
      else currentX = currentX - 1
      end
      if reverseY == false then
        reverseY = true
      else reverseY = false
      end
      local success, data = turtle.inspect()
      if success then
        if data.name == "minecraft:bedrock" then
          __returnhome =  true
          returnHome()
          break
        end
        turtle.dig()
        turtle.forward()
      else turtle.forward()
      end
    end

    local success, data = turtle.inspectDown()
    if success then
      if data.name == "minecraft:bedrock" then
        __returnhome = true
        returnHome()
        break
      end
      turtle.digDown()
      turtle.down()
    else turtle.down()
    end
    currentZ = currentZ + 1
    turtle.turnRight()
    turtle.turnRight()
    if __direction == "north" then
      __direction = "south"
    else __direction = "north"
    end
    if reverseX == false then
      reverseX = true
    else reverseX = false
    end
    if reverseY == false then
      reverseY = true
    else reverseY = false
    end
  end
end

quarry(16, 16)