Mik's Funct

--Mik's Funct

--Function to empty inventory into chest
function emptyInventory()
	local returnX = turtleX
	local returnY = turtleY
	local returnZ = turtleZ
	local returnDirection = turtleDirection
	goHome()
	for i=1,16 do
		turtle.select(i)
		turtle.drop()
	end
	checkCounter = 16
	turtleGoTo(returnX,returnY,returnZ,returnDirection)
end

--Function to send turtle to a specific location
function turtleGoTo(intX, intY, intZ, intDirection)
	while intY > turtleY do
		goUp()
	end
	if turtleX ~= intX then
		while turtleDirection ~= 1 do
			rightFace()
		end
		while turtleX < intX do
			goForward()
		end
	end
	if turtleZ ~= intZ then
		while turtleDirection ~= 2 do
			rightFace()
		end
		while turtleZ < intZ do
			goForward()
		end
	end
	while turtleDirection ~= intDirection do
		rightFace()
	end
end

--Function to determine how many inventory slots are empty
function emptySlots()
	empty = 0
	for i=1,16 do
		count = turtle.getItemCount(i)
		if count == 0 then
			empty = empty + 1
		end
	end
	return empty
end

--Turn turtle to the left and update turtle direction
function leftFace()
	turtle.turnLeft()
	updateFacing( "left" )
end

--Turn turtle to the right and update turtle direction
function rightFace()
	turtle.turnRight()
	updateFacing( "right" )
end

-- Ensure turtle goes up
function goUp()
	while not turtle.up() do
		upDig()
	end
	turtleY = turtleY + 1
end

--Ensure turtle goes down
function goDown()
	while not turtle.down() do
		downDig()
	end
	turtleY = turtleY - 1
end

-- Ensure turtle moves forward
function goForward()
	while not turtle.forward() do
		forwardDig()
	end
	updatePos()
end

-- Dig forward
function forwardDig()
	while turtle.detect() do
		turtle.dig()
		checkInventory()
	end
end

-- Dig up
function upDig()
	while turtle.detectUp() do
		turtle.digUp()
		checkInventory()
	end
end

-- Dig Down
function downDig()
	turtle.digDown()
	checkInventory()
end

-- Function to update turtle position relative to starting location
function updatePos()
	if turtleDirection == 1 then
		turtleX = turtleX + 1
	elseif turtleDirection == 2 then
		turtleZ = turtleZ + 1
	elseif turtleDirection == 3 then
		turtleX = turtleX - 1
	elseif turtleDirection == 4 then
		turtleZ = turtleZ - 1
	end
	print( "UpdatePos: X = " .. turtleX .. " Y = " .. turtleY .. " Z = " .. turtleZ )
end

--Function to update turtle facing direction relative to starting facing direction
function updateFacing(turnValue)
	if ( turnValue == "left" ) then
		turtleDirection = turtleDirection -  1
	elseif ( turnValue == "right" ) then
		turtleDirection = turtleDirection + 1
	else
		print( "Invalid input to updateFacing" .. turnValue )
	end
	if turtleDirection == 5 then
		turtleDirection = 1
	end
	if turtleDirection == 0 then
		turtleDirection = 4
	end
	print("UpdateFacing: " .. turtleDirection )
end

--Function to return turtle to starting area.
function goHome()
	while turtleY > 2 do
		goDown()
	end
	while ( turtleDirection ~= 4 ) do
		rightFace()
		sleep(.1)
		print( turtleDirection )
	end
	while turtleZ > 1 do
		goForward()
	end
	leftFace()
	while turtleX > 1 do
		goForward()
	end
end