Random lighting

[Guest nohed]

I have a code that looks like this

fibaro:sleep(math.random(5000,12000));

fibaro:call(7, "turnOn");

fibaro:sleep(math.random(5000,12000));

fibaro:call(57, "turnOn");

fibaro:sleep(math.random(5000,12000));

fibaro:call(61, "turnOn");

but this code lights the lamp always in the same order. Can you get it so that they both shuffles time and ordningnen as the lights come on?

[Dalle1985 16]

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[UrSv 6]

Nice.

[Guest nohed]

nice

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[Dalle1985 16]

Only problem is, that this is completely random (well not really, computers can't do truly random but anyway) and therefore, you might see the same lamp turn on several times in a row - appearing not to be random. If you want to make sure that they turnon in a "random sequence", you need to employ a randomizing algorithm. Basically a piece of code that ensures that a different lamp from the last will switch on every time - sort of what Apple had to do because their randomizer was too random and it sometimes chose the same song twice in a row - at random... But that might be overdoing it for this application

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[j.nowacki 5]

I created device for such presence simulator. It will scan api for all lights (isLight = 1) and randomly turn them on and off (customizable times). Number of runs can be changed, one device will not be repeated (so number of runs must be lower or equal to number of devices).

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[Daniel.Knight 1]

Hey guys,

Dalle1985, there is a way to get around what you proposed:

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The reason this works in a random way is that the order that items get returned from the pairs() function is not defined, even for indexed tables. It's not truly random (as you previously pointed out), but should work fine for this.

Incidentally, if you remove the sleep line this is a really efficient way of applying the same command to multiple devices.

Cheers,

Dan

[Dalle1985 16]

Hah - that is a very clever little piece of code! I didn't know that Lua would work like that - I thought it would just take it in the order you've arranged it in the array.

[OnnoH 1]

You could seed the random by using:

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or

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Still not ideal, for the lack of milliseconds, so I've read

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[Daniel.Knight 1]

Dalle1985,

It will if you use ipairs() instead. ipairs() returns the values in the exact numeric order of the indices.

Basically, if you need the order to be defined use ipairs(), if not use pairs()

See here for more information -

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Cheers,

Dan

[ Added: 2014-10-30, 12:18 ]

UPDATE:

Just done some further testing on this, and although returned value order is not defined, it's actually the same every time, so the order might be random but it doesn't change when run multiple times. Below is a randomisation function you can add in to make it work:

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Thanks,

Dan

[sonnyboy 11]

I use this lua to randomly turn on lights.

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And i would like to have in this snippet so the scene only runs when the lights are out, but where should i put it in?

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[Ruud 1]

 

I use this lua to randomly turn on lights.

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And i would like to have in this snippet so the scene only runs when the lights are out, but where should i put it in?

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I use this code.

But the light are not randomize going off...

[sonnyboy 11]

Mine works just fine, have you change device id:s to yours?

I may have a newer version. I can post it tomorrow.

[sonnyboy 11]

This is the latest that i run and i works 

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[stevenvd 51]

what might even be easier to do. Is just set  a date or range of date's that you want to simulate. and run through the event log and replicate the behaviour of the devices... than you have real simulation.