HHELP!! Anyone?

LOst · Jan 17, 2005

I'm clock in Sonic 1-3K is increased every framecount. It means that 60 frames in one second.

Now I'm standing at a problem! I have done a game myself that uses the exact same clock.

"Minutes" is a byte
"Seconds" is a byte
"Frame count" is a byte

But I'm having a hi-score in my game, and I need to convert the frame count into the same format as Sonic 3's competition timer.

That means that the counter counts from 0 to 99 in one second, and not from 0 to 60 like the default Sonic timer.

So I need help. I have already everything set except the name of the timer that counts from 0 to 99 in one second.
What is this counter called in English?

Lightning · Jan 17, 2005

Hundredths of a second, you mean?

LOst · Jan 17, 2005

Lightning Hedgehog said:

Hundredths of a second, you mean?
Click to expand...

Yea

I need a shorter name!

Nemesis calls it "Milliseconds". Is that correct?

Xian · Jan 17, 2005

Milliseconds is the next digit down. Hundredth was the only name I could find.

Lightning · Jan 17, 2005

Milliseconds would be 0 to 999, I think.
Centiseconds?

LOst · Jan 17, 2005

Lightning Hedgehog said:

Milliseconds would be 0 to 999, I think.
Centiseconds?
Click to expand...

Is Centiseconds a real name? I mean is it correct to use it in a English statement?

Xian · Jan 17, 2005

centiseconds (1 cs = 1/100th of a second)
Click to expand...

Yes, it is centiseconds

LOst · Jan 17, 2005

Thank you for your help!

And to show you how Sonic 3's competition timer works, I present to you in C++ source:

Code (Text):

const unsigned char centiseconds [60] =

{

0x00, 0x01, 0x03, 0x05, 0x06, 0x08, 0x0A, 0x0B, 0x0D, 0x0F, 0x10, 0x12,

0x14, 0x15, 0x17, 0x19, 0x1A, 0x1C, 0x1E, 0x1F, 0x21, 0x23, 0x24, 0x26,

0x28, 0x29, 0x2B, 0x2D, 0x2E, 0x30, 0x32, 0x33, 0x35, 0x37, 0x38, 0x3A,

0x3C, 0x3D, 0x3F, 0x41, 0x42, 0x44, 0x46, 0x47, 0x49, 0x4B, 0x4C, 0x4E,

0x50, 0x51, 0x53, 0x55, 0x56, 0x58, 0x5A, 0x5B, 0x5D, 0x5F, 0x60, 0x62

};

void ShowCentiseconds (unsigned char frame_count)

{

cout << "Using Sonic 3\'s Centiseconds table to convert the frame count into:\n" << endl;

cout << centiseconds [ frame_count ] << endl;

}

Lightning · Jan 18, 2005

Quite welcome. And I'd've imagined they would do something like that.. But in higher level computers I think it would be easier to just use frame_count * 5 / 3. That's essentially what they apparently did, though. =P

LOst · Jan 18, 2005

Lightning Hedgehog said:

Quite welcome.  And I'd've imagined they would do something like that..  But in higher level computers I think it would be easier to just use frame_count * 5 / 3.  That's essentially what they apparently did, though.  =P
Click to expand...

They use a table because it of the divide by 3. Both mutiply and divide should not be used unles they really have to because of speed issues.

Lightning · Jan 18, 2005

Exactly why I mentioned that for higher-level computers.

Korama · Jan 18, 2005

Interesting question. "Centiseconds" would be perfectly logical, although dictionaries apparently don't know this term (neither does this list on wikipedia). If you are looking for a shorter, albeit fuzzier word, you could probably use jiffy.

Quickman · Jan 18, 2005

The reason "centiseconds" isn't widely known is because the second is not an SI unit (since time has not yet been decimalised) but centi- is an SI prefix for x10^-2.

Korama · Jan 18, 2005

Wrong. The second is even one of the seven SI base units.

Trigahd · Jan 19, 2005

It's too bad most people confuse millisecond with centisecond. If you ask a normal to tell you time to the nearest centisecond, they'll look at you like you are an idiot and don't know how to tell the time. However, if you ask them to the nearest millisecond, they'll give you an approximation, since they know the incorrect way to tell time. I only wish they'd teach kids that in school . The term is centiseconds and Korama is indeed right about seconds being an SI unit.

Quickman · Jan 19, 2005

Korama said:

Wrong. The second is even one of the seven SI base units.
Click to expand...

Maybe so, but it doesn't work as a true SI unit because it's not decimal - there's 60 seconds in a minute, 60 minutes in an hour, 24 hours in a day. This makes SI prefixes a severe pain to work with. Roll on decimal time.

Simon · Jan 19, 2005

Ketsuban said:

Korama said:

Wrong. The second is even one of the seven SI base units.
Click to expand...

Maybe so, but it doesn't work as a true SI unit because it's not decimal - there's 60 seconds in a minute, 60 minutes in an hour, 24 hours in a day. This makes SI prefixes a severe pain to work with. Roll on decimal time.
Click to expand...

Then don't convert to minutes or hours, at least not until the very last step where human interpretation is truly needed. Stick with seconds.

http://www.sengpielaudio.com/calculator-millisecond.htm

LOst · Jan 19, 2005

Simon said:

Ketsuban said:

Korama said:

Wrong. The second is even one of the seven SI base units.
Click to expand...

Maybe so, but it doesn't work as a true SI unit because it's not decimal - there's 60 seconds in a minute, 60 minutes in an hour, 24 hours in a day. This makes SI prefixes a severe pain to work with. Roll on decimal time.
Click to expand...

Then don't convert to minutes or hours, at least not until the very last step where human interpretation is truly needed. Stick with seconds.

http://www.sengpielaudio.com/calculator-millisecond.htm
Click to expand...

Well that page says Centiseconds. And cs. So I stick to it.

Thank you all for your support!

Djbrayster · Jan 26, 2005

heh I remember when was at uni, and the questions involving speed and time. We had to convert everthing to the base unit (seconds, metres, etc) and then convert to miles per hour. it caused alot of confusion in the class, but yeah Centisecond is right. just not used often due to centi being a awkward base 10 number. always were told to work in base of 3 like 10^3 or 10^-6 not 10^-2 etc.
However why is it a millisecond can be used when time is measured in seemingly 60 part intervals? a millisecond IS 1/1000 of a second not 1/60 (the ratio deriviative not avtually 1/60) of a second?
I think I know why I failed uni.. the SI got messy too fast!

Edit: typos and fixed some explainations

HHELP!! Anyone?

Useful Searches