Branchmine prototype

i=0
a=0
d=0

function drop()
n=0
	for n=5,14 do
		turtle.select(n)
		turtle.dropDown(64)
	end
end

function customgo()
	go=0
	for go=1,i do
		turtle.forward()
	end
end

function go()
	go=0
	for go=1,14 do
		turtle.forward()
	end
end

function goup()
	home=0
	if f > 0 then
		for home=1,f do
			for b=1,7 do
				turtle.digUp()
				turtle.up()
			end
		end
	end
end


function godown()
	home=0
	for home=1,f do
		for b=1,7 do
			turtle.down()
		end
	end
end

function turnround()
	turtle.turnRight()
	turtle.turnRight()
end

function refuel()
	if turtle.getFuelLevel() < 20 then
		turtle.select(16)
		turtle.refuel(4)
		os.sleep(0.5)
	end
end

function gravelup()
	turtle.digUp()
	turtle.select(4)
	while turtle.compareUp() == true do
		turtle.digUp()
		os.sleep(0.5)
	end
	turtle.select(1)
end

function gravel()
	turtle.dig()
	turtle.select(4)
	while turtle.compare() == true do
		turtle.dig()
		os.sleep(0.5)
	end
	turtle.select(1)
end

function filter()
slot=0
	for slot=1,4 do
		if turtle.getItemCount(slot) >30 then
			turtle.select(slot)
			turtle.drop(20)
		end
	end
	turtle.select(1)
end

function delivery()
v=0
go=0
home=0
	if turtle.getItemCount(14) > 0 then
		turnround()
		for v=1,d do
			turtle.forward()
		end
		v=0
		if a == 1 then
			turtle.turnRight()
			customgo()
			goup()
			drop()
			godown()
			turnround()
			customgo()
			turtle.turnLeft()
		end
		if a == 2 then
			turtle.turnRight()
			customgo()
			turtle.turnLeft()
			go()
			goup()
			drop()
			godown()
			turnround()
			go()
			turtle.turnRight()
			customgo()
			turtle.turnLeft()
		end
		if a ==3 then
			turtle.turnRight()
			customgo()
			turtle.turnLeft()
			go()
			turtle.turnLeft()
			go()
			goup()
			drop()
			godown()
			turnround()
			go()
			turtle.turnRight()
			go()
			turtle.turnRight()
			customgo()
			turtle.turnLeft()
		end
		if a ==4 then
			turtle.turnRight()
			customgo()
			turtle.turnLeft()
			go()
			turtle.turnLeft()
			go()
			turtle.turnLeft()
			go()
			goup()
			drop()
			godown()
			turnround()
			go()
			turtle.turnRight()
			go()
			turtle.turnRight()
			go()
			turtle.turnRight()
			customgo()
			turtle.turnLeft()
		end
		for v=1,d do
			turtle.forward()
		end
		d=0
	end
	turtle.select(1)
end

function torch()
p=p+1
	if p == 6 then
		turtle.turnRight()
		turtle.forward()
		turtle.turnRight()
		turtle.forward()
		turtle.select(15)
		turtle.placeUp()
		turnround()
		turtle.forward()
		turtle.turnLeft()
		turtle.forward()
		turtle.turnRight()
		p=0
	end
end

function dig()
	gravel()
	turtle.forward()
	gravelup()
	turtle.digDown()
	turtle.turnLeft()
	gravel()
	turtle.forward()
	gravelup()
	turtle.digDown()
	turnround()
	turtle.forward()
	gravel()
	turtle.forward()
	gravelup()
	turtle.digDown()
	turnround()
	turtle.forward()
	turtle.turnRight()
end

function branch()
	turtle.turnLeft()
	for d=1,dist do
		refuel()
		dig()
		filter()
		torch()
		delivery()
	end
	turnround()
	for d=1,dist do
		turtle.forward()
	end
	turtle.turnLeft()
end

function level()
	for a=1,4
		for i=1,14
			refuel()
			dig()
			filter()
			torch()
			if i == 1 then
				branch()
			end
			if i == 7 then
				branch()
			end
			if i == 13 then
				branch()
			end

		end
		turtle.turnRight()
		i=0
	end
	a=0
end

function descend()
b=0
	level()
	for b=1,7
		turtle.digDown()
		turtle.down()
	end
end


print("Hello, and welcome to the branch mine program.")
term.write("How far do you want to ea branch to be?: ")
dist=read()
term.write("How many levels do you want to go down?: ")
down=read()

f=0

for f=1,down do
	descend()
end


print("branch program complete, enjoy your day")