CC Turtle Mine Square

currentx = 1
currenty = 1
currentz = 1
lasty = 1
local arg = {...}

maxX = tonumber(arg[1])
maxY = tonumber(arg[2])
maxZ = tonumber(arg[3])

print("Creando un cuadrado de (x: " .. maxX .." y: " .. maxY .." z: " ..maxZ .. ")")

turtle.select(1)
turtle.refuel()
turtle.select(2)
siding = 1
currentSlot = 2
auxSlot = 2
function returndown()
    while(currenty ~= lasty)
    do
        turtle.down()
        currenty = currenty + 1
    end
end

function returnstart()
    print("Returning to startpoint...")
	if(siding == 1) then
		turtle.turnLeft()
		while (currentz > 1)
			do
				turtle.forward()
				currentz = currentz - 1
			end
    	turtle.turnLeft()
		while (currentx > 1)
			do
				turtle.forward()
				currentx = currentx - 1
			end
		turtle.turnLeft()
		turtle.turnLeft()
		currentx = 1
		currentz = 1
	else
		turtle.turnRight()
		while (currentz > 1)
			do
				turtle.forward()
				currentz = currentz - 1
			end
		turtle.turnLeft()
		while (currentx  > 1)
			do
				turtle.forward()
				currentx = currentx - 1
			end
		currentx = 1
		currentz = 1
		turtle.turnRight()
		turtle.turnRight()
	end
end


while (currentx ~= maxX or currenty ~= maxY or currentz ~= maxZ)
do
        print("Posición acutal (x: " .. currentx .. " y: " .. currenty .." z: " ..currentz..")")
        compareblocker = true
        while((not turtle.compare()) and compareblocker and turtle.detect())
        do
            print("checking slot: " .. auxSlot)
            turtle.select(auxSlot)
            if(turtle.getItemCount(auxSlot) == 0) then
                compareblocker = false
            else
                if (auxSlot < 16) then
                    auxSlot = auxSlot + 1
                    turtle.select(auxSlot)
                else
                    returnstart()
    				while(currenty > 1)
        			do
        				turtle.up()
        				currenty = currenty - 1
        			end
    				turtle.turnLeft()
    				turtle.turnLeft()
    				auxSlot = 16
    				while(auxSlot ~= 1)
    				do
                        turtle.select(auxSlot)
                        turtle.drop()
                        auxSlot = auxSlot -1
    				end
    				auxSlot = 2
    				turtle.select(2)
    				turtle.turnLeft()
    				turtle.turnLeft()
    				compareblocker = false
    				returndown()
                end
            end
        end

		if (turtle.getItemCount(currentSlot) == 64) then
			if (currentSlot < 16) then
    			currentSlot = currentSlot +1
    			turtle.select(currentSlot)
    		else
				returnstart()

				while(currenty > 1)
    			do
    				turtle.up()
    				currenty = currenty -1
    			end
				turtle.turnLeft()
				turtle.turnLeft()
				turtle.select(16)
				while(currentSlot ~= 1)
				do
                    turtle.drop()
                    currentSlot = currentSlot -1
                    turtle.select(currentSlot)
				end
				currentSlot = 2
				turtle.turnLeft()
				turtle.turnLeft()
				returndown()
			 end
		elseif (turtle.getItemCount(1) < 5) then
			returnstart()

			while(currenty > 1)
			do
				turtle.up()
				currenty = currenty -1
			end
			turtle.turnLeft()
			turtle.select(1)
			turtle.refuel()
			turtle.suck(64 - turtle.getItemCount(1))
			turtle.turnRight()
			returndown()
		elseif (turtle.getFuelLevel() < 10) then
			turtle.select(1)
			turtle.refuel()

		elseif (currentx < maxX) then
			turtle.dig()
			turtle.forward()
			currentx = currentx + 1
		elseif (currentz < maxZ and currentx >= maxX) then
			currentx = 1
			currentz = currentz + 1
			if (siding == 1) then
				turtle.turnRight()
				turtle.dig()
				turtle.forward()
				turtle.turnRight()
				siding = 2
			else
				turtle.turnLeft()
				turtle.dig()
				turtle.forward()
				turtle.turnLeft()
				siding = 1
			end
		else
		    if (currenty < maxY) then
				returnstart()
        	  	currentx = 1
				currentz = 1
				currenty = currenty + 1
				lasty = currenty
				turtle.digDown()
				turtle.down()
				siding = 1
			end
		end
		auxSlot = 2
end

returnstart()
while(currenty > 1)
	do
	    turtle.up()
		currenty = currenty -1
end
turtle.turnLeft()
turtle.turnLeft()
turtle.select(16)
currentSlot = 16
while(currentSlot ~= 1)
do
    turtle.drop()
    currentSlot = currentSlot -1
    turtle.select(currentSlot)
end
turtle.turnLeft()
turtle.turnLeft()