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Author Topic: Universe Sandbox Beta 3 Released  (Read 35771 times)

Dan Dixon

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Re: Universe Sandbox Beta 3 Released
« Reply #30 on: February 09, 2010, 09:25:04 AM »
Try settings the time step to a few minutes per step. 6 hours is still too high.

mustacheman

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Re: Universe Sandbox Beta 3 Released
« Reply #31 on: February 09, 2010, 09:52:38 AM »
Ok.

Looks like 16 minutes for the time step is about highest it can go before the rings start getting affected. And about an hour before they start flying off.   :) So people know!

FGFG

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Re: Universe Sandbox Beta 3 Released
« Reply #32 on: February 09, 2010, 10:21:58 AM »
It also depends by the power of your CPU, a better one could mantain an higher time step without affecting the rings ;)

Bla

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Re: Universe Sandbox Beta 3 Released
« Reply #33 on: February 09, 2010, 10:30:47 AM »
It also depends by the power of your CPU, a better one could mantain an higher time step without affecting the rings ;)
But isn't timestep the leap the CPU makes when it calculates a "cycle", so a better CPU would allow more time to pass faster at lower timesteps, while still being just as accurate?

bessy

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Re: Universe Sandbox Beta 3 Released
« Reply #34 on: February 09, 2010, 11:58:11 AM »
yer having a powerful computer will make no diference if you turn the time step up because if for eg you have the moon orbiting earth and you put the time step up to 1month it will not be able to orbit

but it does make a diference to time taken to do each calulation so it will make time move at the same rate with more and more objects to process


Dan Dixon

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Re: Universe Sandbox Beta 3 Released
« Reply #35 on: February 09, 2010, 12:04:15 PM »
It also depends by the power of your CPU...

The setting of "time step" has nothing to do with with the speed of your computer, but the value in "1 real sec = " is dependent on your CPU.

But isn't timestep the leap the CPU makes when it calculates a "cycle", so a better CPU would allow more time to pass faster at lower timesteps, while still being just as accurate?

That sounds mostly right. To be clear:
A better CPU would allow the same "time step" to run faster, but on any CPU the accuracy would be the same.

If the time step is 1 minute, then each frame shows the result of 1 simulated minute passing. If it takes your computer 1/30 of a second for each frame then in one real second your computer could compute 30 minutes in the simulation so "1 real sec =" would be 30 minutes.

Another example: Time Step = 1 minute, but on a slower computer it might take 1/2 second for each update. (15 times as slow as the example above). So "1 real sec = " would be 2 minutes.

If you set "1 real sec = " to be 1 second then the simulation will simulate in real time.

And in looking at this it would appear that "1 real sec = " is broken in Beta 3. The value is updating correctly in the old UI, but it's not updating in the new UI. I'll fix it for the next update.

mustacheman

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Re: Universe Sandbox Beta 3 Released
« Reply #36 on: February 09, 2010, 12:54:50 PM »
Is there a way to accurately create a Blue Giant?

mustacheman

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Re: Universe Sandbox Beta 3 Released
« Reply #37 on: February 10, 2010, 07:25:16 PM »
Here's a picture of the sun glitch I talked about earlier. (The line btw is Uranus' orbit around Rigel and the Sun). Pretty much this happens with any star for me at any time.



Here's the direct link
http://i322.photobucket.com/albums/nn408/shebalynnhulse/sunglitch.jpg
« Last Edit: February 10, 2010, 07:45:24 PM by mustacheman »

atomic7732

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Re: Universe Sandbox Beta 3 Released
« Reply #38 on: February 10, 2010, 07:39:40 PM »
WTF!

MassiveEffect

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Re: Universe Sandbox Beta 3 Released
« Reply #39 on: February 10, 2010, 08:59:09 PM »
I have this glitch also.

Naru523

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Re: Universe Sandbox Beta 3 Released
« Reply #40 on: February 10, 2010, 10:19:03 PM »
What the hax..

Chaotic Cow

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Re: Universe Sandbox Beta 3 Released
« Reply #41 on: February 11, 2010, 09:49:51 AM »
Looks cool though.

mustacheman

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Re: Universe Sandbox Beta 3 Released
« Reply #42 on: February 15, 2010, 03:33:49 PM »
In the system Our Solar System Jumble, the gas giants (except for Neptune) are invisible. Stats are still there and you can still do things with them, they're just invisible.

atomic7732

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Re: Universe Sandbox Beta 3 Released
« Reply #43 on: February 19, 2010, 05:12:37 PM »
Total glitch, there is this rotating squrare...

Dan Dixon

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Re: Universe Sandbox Beta 3 Released
« Reply #44 on: February 19, 2010, 05:29:59 PM »
Total glitch, there is this rotating squrare...

Press Ctrl+R to reload the scene. This is a bug caused by the star glow texture not having loaded yet before the scene is first drawn.

Thanks!