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Flvio Lisba wrote:
>
> 2007/10/29, trebor777 <mrobert / trebor777.net>:
>
>>
>> Hi!
>>
>> I'm searching for a light method for finding the closest items to a given
>> value.
>>
>> example/
>>
>> 1..10
>> in a range
>> i give,  5.5, return  5 and 6  for example....
>>
>> as i'm working with arrays, containing numbers, but with no regular
>> step...
>> it will change i think.
>> example..
>>
>> a = [ 1, 1.25, 2, 3, 3.5 ]
>>
>> if i give 1.85, it gives me 1.25 and 2
>>
>> It's for a little music game, where player has to tap at the right
>> moment,
>> notes are register in a array, with the correct time, and as players
>> can't
>> be accurate as a computer, i need some error margin. I working with  0.05
>> rounded values.
>>
>>
>> Also, if someone knows a good way to synchro Scrolling and Music with
>> tempo
>> value that would be great...
>> I mean, not the conversion to find how many frames between each beats.
>> but
>> how to convert, the number of frames between 2 beat to a distance in
>> pixel...? ( and possibly with a set-able speed) ?
>>
>>
>> Thanks.
>>
>> --
>> View this message in context:
>> http://www.nabble.com/find-the-closest-items-in-an-array-to-a-given-value.-tf4714369.html#a13475984
>> Sent from the ruby-talk mailing list archive at Nabble.com.
>
>
> Something like this? (Supposing the array may not be in order)
>
> def array_between(a=[], v=0.0)
>   return [] if a.empty?
>   return [v, a.min] if v < a.min
>   return [a.max, v] if v > a.max
>   ret = []
>   ret.push a.find {|num| num < v}
>   ret.push a.find {|num| num > v}
>   ret.push v if ret.size < 2
>   return ret.sort
> end
>
> Just a quick 10-second sketch... Maybe you should have tried this too.
> And i know you from other forums too! Nice to see you here trebor!!
>
>

Well must be RMXP.org.. isn't it?
(although it's been a while i've been there)
I use the same username everywhere i go on the net... xD
--
View this message in context: http://www.nabble.com/find-the-closest-items-in-an-array-to-a-given-value.-tf4714369.html#a13481371
Sent from the ruby-talk mailing list archive at Nabble.com.

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