Movement.lua

facing = 0 -- 1 = North, 2 = East, 3 = South, 4 = West

moveChance = 0
turnChance = 0
turning = false

function ChangeDirection(isRandom)
	if(isRandom) then
		turnTo = math.random(1, 4)
	end

	turning = true
end

function DetermineMovement()

	if(turning) then
		if(not (facing == turnTo)) then
			turtle.turnRight()
			facing = facing + 1

			if(facing == 5) then
				facing = 1
			end
		else
			turning = false
		end
	end

	if(turtle.detect()) then
		turnChance = 101
	end

	if(moveChance >= 5) then
		if(turnChance >= 10) then
			ChangeDirection(true)
			turnChance = 0
		else
			turnChance = turnChance + 1
			turtle.forward()
		end

		moveChance = 0
	else
		moveChance = moveChance + 1
	end
end