error:too long without yeilding.

I don't know a lot about coding. My first progect was to make a mining/quarry turtle. I ended up scrapping my first code until I got the basics down with just up and down movements. I'm probably going to guess that the problem lies within the while loop and its not going to the top each time. When the items get to 20 is when I get the error. I have the item count on 20 so i dont have to keep going down as far each time to "test" the program. It probably has something to do with the double while loop.

What I am looking for is a to fix my problem or just someone to say a work around "look into this".
I don't expect anyone to build the code for me and i do appreciate all the feedback/extra help given.

Spoiler

f = 64 – starting floor
b = 5 – bedrock

while f > 5 do
while turtle.getItemCount (2) < 20 do
turtle.digDown()
turtle.down()
f = f - 1
end

end

while b < 64 do
turtle.up()
b = b + 1

end

http://pastebin.com/KuNZb0Ns

awesome thanks. So how does the sleep work. I added the sleep(0), that part works fine. However it doesn't go into the turtle.up command.

A turtle command works like a yield

You've done something funny to your rom/apis/turtle/turtle so that the java turtle functions don't get replaced with the versions that yield properly. Or you've somewhere else gone and replaced the turtle functions with the turtle.native backup of the java turtle functions.

At least, that's all I can think of to explain how this code could be generating a "too long without yielding error".

turtle.getItrmCount doesn't yield.

But turtle.down() should, right? It had to not yield twenty times for this error to occur. That's got to be the native java function, because the lua functions specifically yield to avoid this problem.

If slot 2 has more than 20 items in it what would happen?

Oh…derp.

What I mean to say is…

f = 64 -- starting floor
b = 5 -- bedrock

while f > 5 and turtle.getItemCount (2) < 20 do
    turtle.digDown()
    turtle.down()
    f = f - 1
end

while b < 64 do
    turtle.up()
    b = b + 1
end

The sleep avoided the error message, but didn't resolve your infinite loop problem.

thanks for all the help guys. I realized that even if would end the dig down loop and go up. The level would be wrong and it would be a lot higher then normal.

If slot 2 had more then 20 items in it. it would either go straight to sleep mode or into the up command. I'm not really sure. With the new modpacks and christmas. I've not had time to mess with it that much. As soon as we get our server up and running and i have enough items to play around with it. I'm going to start coding again.

Okay, then combine b and f into a single value that tracks your current position.

f = 64
while f > 5 and turtle.getItemCount (2) < 20 do
    turtle.digDown()
    turtle.down()
    f = f - 1
end
for i=f,63 do turtle.up() end

okay, the last bit doesn't update f on the way up, but it should return to the starting level.