chunkMine

os.loadAPI("tMV.lua")

local sideLength = 16
local atMaxDepth = false
local nextDepth = 0

--mines and moves forward
function mineForward()
	while turtle.dig() do
		os.sleep(0.1)
	end
	while not tMV.tForward() do
		os.sleep(0.1)
	end
	turtle.digDown()
	turtle.digUp()
end

--mines an 8x8 layer, 3 high
function mineLayer()
	for i=1,sideLength do
		mineForward()
	end
	tMV.tTurnRight()
	for i=(sideLength-1),1,-1 do
		for j=1,2 do
			for k=1,i do
				mineForward()
			end
			tMV.tTurnRight()
		end
		dumpCobble()
	end
end

--mines to the next layer down. returns true if the turtle couldnt move any further down
function layerDown(layerDepth)
	local atBedrock = false

	tMV.face(1)
	 for i=1,-1*layerDepth do
		turtle.digDown()
		if not tMV.tDown() then
			atBedrock = true
		end
	end

	return atBedrock
end

--return to home and dump ores
function dropOffOres()
	tMV.goHome()
	tMV.face(3)
	for slot=2,16 do
		turtle.select(slot)
		turtle.drop()
	end
end

--dumps all cobble on the ground
function dumpCobble()
	for slot=2,16 do
		turtle.select(slot)
		if turtle.compareTo(1) then
			turtle.dropDown(64)
		end
	end
end

--main loop.  mines a layer, gets the depth it was at, goes home to drop off ores, then returns to that depth +3. if it hits bedrock the loop ends
while not atMaxDepth do
	print(nextDepth)
	mineLayer()
	nextDepth = tMV.getPos()[2] - 3
	print(nextDepth)
	print("")
	dropOffOres()

	if layerDown(nextDepth) then
		atMaxDepth = true
	end
end

tMV.goHome()