[Request] backround GPS - ComputerCraft Forums (archive)

dcleondc #1

66 posts

Posted 10 October 2012 - 05:31 AM

hello i want to know if someone can make a program that makes it so the startup runs the GPS host in the background but looks like a normal startup screen where you can run anyprogram and have the host running in the background

faubiguy #2

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231 posts

Posted 10 October 2012 - 05:51 AM

I think that this will work:


parallel.waitForAny(function() os.run({print = function() end}, "rom/programs/gps", "host", "<x>", "<y>", "<z>") end, function() term.clear() term.setCursorPos(1,1) shell.run("shell") end)

Just put it in the startup.

You'll have to substitute the <x>, <y>, and <z> with the coordinates you want for the gps host.

dcleondc #3

66 posts

Posted 10 October 2012 - 10:20 PM

i already have a program that is named "host" that runs the gps program with the cords, so how would i make it so i runs "host" in the background

faubiguy #4

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231 posts

Posted 10 October 2012 - 10:41 PM

where it says

"rom/programs/gps", "host", "<x>", "<y>", "<z>"

Just replace "rom/programs/gps" with the full path to "host" and put any arguments to host after that, where "host", "<x>", "<y>", "<z>" is now.

dcleondc #5

66 posts

Posted 10 October 2012 - 11:38 PM

did, and it gave me a error

faubiguy #6

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231 posts

Posted 10 October 2012 - 11:43 PM

Do you have the path and all arguments in quotes, with commas, like in the code above? What was the error?

dcleondc #7

66 posts

Posted 11 October 2012 - 03:36 AM

error is


host:1: attempt to index ? (a nil value)

but if i just run host it works fine

Lyqyd #8

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8543 posts

Posted 11 October 2012 - 04:43 AM

dcleondc, on 11 October 2012 - 03:36 AM said:
error is
host:1: attempt to index ? (a nil value)
but if i just run host it works fine

You'll probably need to modify the table passed to os.run to have an __index metamethod pointing to _G.

dcleondc #9

66 posts

Posted 11 October 2012 - 04:48 AM

Lyqyd, on 11 October 2012 - 04:43 AM said:
dcleondc, on 11 October 2012 - 03:36 AM said:
error is
host:1: attempt to index ? (a nil value)
but if i just run host it works fine
You'll probably need to modify the table passed to os.run to have an __index metamethod pointing to _G.

what?

Lyqyd #10

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8543 posts

Posted 11 October 2012 - 05:15 AM


backEnvMeta = {__index = _G}
backEnv = {write = function() end}
setmetatable(backEnv, backEnvMeta)
parallel.waitForAll(function() os.run(backEnv, "host", 12, 13, 14) end, whateverElseYouAreRunning)

faubiguy #11

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231 posts

Posted 11 October 2012 - 02:51 PM

Doesn't os.run automatically set the index to _G? The code I put works fine when I tested it. It still can't hurt to set the index metamethod to _G though.