Universe Sandbox

Universe Sandbox => Universe Sandbox | Discussion => Topic started by: Greenleaf on September 05, 2014, 12:46:39 AM

Title: Shock waves from collisions
Post by: Greenleaf on September 05, 2014, 12:46:39 AM
Georg just showed the first iteration of shock waves, and though certain elements, namely shock heating, are still missing, they look rather good. Ok, perhaps even a bit more than "rather"  :o

http://youtu.be/zQT6uKOpZlU
Title: Re: Shock waves from collisions
Post by: Xriqxa on September 05, 2014, 12:56:27 AM
Oh God.



You people are beautiful :,)
Title: Re: Shock waves from collisions
Post by: WitheHole18 on September 05, 2014, 01:52:36 AM
cool, earthquake.
with this collisions are the coolest and catastrophic
Title: Re: Shock waves from collisions
Post by: Bla on September 05, 2014, 03:40:13 AM
That looks really awesome :)
Title: Re: Shock waves from collisions
Post by: Skailer on September 05, 2014, 04:41:16 AM
That's looks Amazing :')
Title: Re: Shock waves from collisions
Post by: smjjames on September 05, 2014, 06:22:36 AM
Coolness! :D

Maybe this could be added to the colliding object? Might work for baseline mode while the actual shattering would be done with SPH.

BTW, how is the SPH modelling going? We haven't heard an update about it in a while.
Title: Re: Shock waves from collisions
Post by: The Ventifact on September 05, 2014, 07:33:19 AM
Total awesomeness!

I do have one question. Will you make the shock wave displace the clouds? Like what they do in those artist's renditions of asteroid impacts on History Channel documentaries? Or would clouds simply evaporate from all the heat? I guess that's why its a rendition.

Either way, this is going to be cool. :D
Title: Re: Shock waves from collisions
Post by: Vince77 on September 05, 2014, 08:35:10 AM
Wow !! Look awesome  :o !! You can be really proud :)
Title: Re: Shock waves from collisions
Post by: MightyTorten on September 05, 2014, 08:51:15 AM
Looks fantastic, in the future, would it be possibly for the water to be displaced by the shock wave, forming a mega wave?
Title: Re: Shock waves from collisions
Post by: Greenleaf on September 05, 2014, 03:28:33 PM
BTW, how is the SPH modelling going? We haven't heard an update about it in a while.


Right now it is on hold, while I am focusing on cleaning up the collision code and adding back a lot of different integrators, fixing bugs and other things. Rest assured, I will be quick to showcase any new development on the SPH front ;-)
Title: Re: Shock waves from collisions
Post by: Cryo on September 06, 2014, 12:48:41 AM
Heavenly......
Title: Re: Shock waves from collisions
Post by: Josh on September 06, 2014, 10:55:08 AM
Now THIS looks awesome.
Title: Re: Shock waves from collisions
Post by: Camacha on September 06, 2014, 07:05:32 PM
I understand that very large shock waves can circle a planet multiple times. Can these do that as well?

They are looking very good, I must say. A lot better than the clipping explosions we have now. Wonderful!
Title: Re: Shock waves from collisions
Post by: smjjames on September 06, 2014, 07:11:06 PM
Hopefully you guys can have impactors the size of the Chixiculub asteroid actually make a crater because right now, they don't.
Title: Re: Shock waves from collisions
Post by: Uxuser on September 07, 2014, 08:23:09 AM
Maybe when the body hits a planet with clouds, the shock wave will appear, but the clouds will scatter. I like this addition.
Title: Re: Shock waves from collisions
Post by: spacegenius2000 on September 07, 2014, 03:26:52 PM
*random orgy*
Title: Re: Shock waves from collisions
Post by: Greenleaf on September 08, 2014, 02:59:37 AM
Hopefully you guys can have impactors the size of the Chixiculub asteroid actually make a crater because right now, they don't.


We actually do calculations like http://www.purdue.edu/impactearth/ which means that in the engine, the crater is calculated correctly. We know the amount of ejected material and the size of the crater.
The issue is that since most collisions (in this framework) are much larger, we had to set a lower limit on the rather costly crater visuals, and that limit was above this particular impact.
Title: Re: Shock waves from collisions
Post by: RobertGimRo on September 08, 2014, 05:46:40 AM
Georg just showed the first iteration of shock waves, and though certain elements, namely shock heating, are still missing, they look rather good. Ok, perhaps even a bit more than "rather"  :o

http://youtu.be/zQT6uKOpZlU

YES Finally Shockwaves

And I Think As The Shockwave Passes It Should Clear The Clouds

Double-post merged by Bla
Title: Re: Shock waves from collisions
Post by: Universip on September 08, 2014, 06:48:10 AM
Really nice ! The only missing thing to make colision perfect is the ground melting/water evaporating as the shockwave passes. Otherwise, very good work !
Title: Re: Shock waves from collisions
Post by: Xriqxa on September 08, 2014, 07:26:23 AM
That'll probably happen when they get around to heating, since the current product does not simulate thermal energy. There'd also be some problems with that since bodies heat as a whole instead of individual regions. Maybe this'll all start working when SPH is finally integrated.
Title: Re: Shock waves from collisions
Post by: Plutonium on September 09, 2014, 10:04:01 PM
Hopefully you guys can have impactors the size of the Chixiculub asteroid actually make a crater because right now, they don't.


We actually do calculations like http://www.purdue.edu/impactearth/ which means that in the engine, the crater is calculated correctly. We know the amount of ejected material and the size of the crater.
The issue is that since most collisions (in this framework) are much larger, we had to set a lower limit on the rather costly crater visuals, and that limit was above this particular impact.


Is a slider for changing the limit possible, to simulate small impacts but with high accuracy??
Now when the shock waves are coming, do you plan to add dust clouds that will affect the climate?))
Title: Re: Shock waves from collisions
Post by: DiamondMiner10 on September 11, 2014, 09:02:37 PM
Looks awesome! But as said before, maybe make it displace the clouds. (I know that would take a lot of work but it seems cool) Great work though :)
Title: Re: Shock waves from collisions
Post by: RobertGimRo on September 12, 2014, 04:49:20 AM
And Could You Optimaize The Game A Little ?
Title: Re: Shock waves from collisions
Post by: Xriqxa on September 12, 2014, 05:11:31 AM
It runs quite smoothly, even on my non-gaming Mac. It's still in Alpah so there are bound to be optimization issues, but if it's THAT bad for you your computer probably isn't the best out there :P
Title: Re: Shock waves from collisions
Post by: shadow6061be on September 12, 2014, 07:47:47 AM
It's available on Mac, Linux, and Windows. What more do you want?

I don't get your comment. Did the message you meant to respond to get deleted ?
Because if you are answering to RobertGimRo's post, optimizing a game means making it run smoother, not on other OS's
Title: Re: Shock waves from collisions
Post by: Xriqxa on September 13, 2014, 01:43:12 AM


Maybe this could be added to the colliding object? Might work for baseline mode while the actual shattering would be done with SPH.



Yeah if we had shockwaves on the colliding body it would be enough until GA gets SPH done:

http://cdn.wonderfulengineering.com/wp-content/uploads/2014/04/space-wallpapers-6.jpg
Title: Re: Shock waves from collisions
Post by: pac0master on September 15, 2014, 08:25:56 PM
That's actually awesome!

I don't know what you guys are planning for the new update ( other than these shockwave ) but I really want to check it out.
Title: Re: Shock waves from collisions
Post by: DiamondMiner10 on September 16, 2014, 04:46:44 PM


Maybe this could be added to the colliding object? Might work for baseline mode while the actual shattering would be done with SPH.



Yeah if we had shockwaves on the colliding body it would be enough until GA gets SPH done:

http://cdn.wonderfulengineering.com/wp-content/uploads/2014/04/space-wallpapers-6.jpg
1 word: Wow.
Title: Re: Shock waves from collisions
Post by: DaniheltheMage on September 17, 2014, 07:37:22 PM
It is extremely weird that I just got this as my desktop background, and then checked the forums to see that image.
Title: Re: Shock waves from collisions
Post by: creeperz1211 on September 17, 2014, 11:25:29 PM
Oh wow.... AWESOME!!!!!!!   :D :D :D :D :D :D :D :D :D :D Seriously, you people are amazing.
Title: Re: Shock waves from collisions
Post by: DaniheltheMage on September 18, 2014, 11:30:23 AM
What if shockwaves could collide with each other and explode into space
Title: Re: Shock waves from collisions
Post by: creeperz1211 on September 18, 2014, 03:46:04 PM
What if shockwaves could collide with each other and explode into space
That would be cool. I can't wait to get alpha 11 so I can do a sort of deep impact-ish thing.
Title: Re: Shock waves from collisions
Post by: pac0master on September 18, 2014, 06:10:59 PM
About tsunamis, I believe you could use the same techniques you used to make the Shock Waves, Just change the colour and make it go a shorter distance.

Then, Just make it happen if an impact is over water ( lets say minimum 20% over water )
It could be slower than Sound and get slower over time. I believe it would be an interesting way to make it.
Title: Re: Shock waves from collisions
Post by: Xriqxa on September 20, 2014, 02:06:17 AM
What if shockwaves could collide with each other and explode into space


Idk if that's how it works. They'd just pass through each other. If they were made of solid material then yes they would spray upward but probs not into space =P
Title: Re: Shock waves from collisions
Post by: DaniheltheMage on October 01, 2014, 01:17:05 PM
Maybe if they were big enough. Probably not but it would be awesum