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[atomic7732]

Upon colisions you should make a hydrodynamic screen pop up. It should be yellow core orange mantle and green crust (in stars case yellow core and red other stuff(gas giants brown core and blue for other gases)) and show the collison... it would be cool! Then you could make a whole addon program that is like this:

could you make a simple (-ish) program, for impacts?
 
It would open up on a menu:
 
Object 1
 
Diameter
________ (Choose km or mi)
 
Crust [Color picker]
________%
 
Mantle [Color Picker]
________%
 
Core [Color Picker]
________%
 
Rotation
_________ (Choose hours or days)
 
Mass
_________ (Choose Me or Mj)
 
Buttons
 
OK, Cancel
 
 
 
If you press "OK"
 
It takes you to a new menu that is blank exactly the same!
If you press cancel, you close the progam.
 
But for Object 2 the buttons are:
One more object, Finish, cancel
 
Again "cancel" closes the program.
"Finish" opens another window that is black with your objects on it(only the color of the crust to make it real (after the crash mantle and possibly core is able to be seen), not like a slice that you see through) ((SEE BELOW ":::"))
If you press "one more object", another menu the same, pops up.
The buttons are:
Finish, Cancel
 
"cancel" goes back to Object 2's menu.
"Finish" opens another window that is black with your objects on it(only the color of the crust to make it real (after the crash mantle and possibly core is able to be seen), not like a slice that you see through)
:::Those are circular objects IN HYDRODYNAMICS.
There is a dot in the center that can be clicked and dragged to any spot on the screen.
Out of the dot is an arrow saying in mi or km/s (whichever you chose) you can drag it out for velocity, and change direction.
 
There are three small menus, Time, Scale, and Time Step
Scale can be zoomed out to only about .3 AU.
 
REMEMBER, HYDRODYNAMICS
 
Each object is about 1,500 particles.
 
Thanks, if you could tell me how long it might be for the program. And in a later update maybe 5 objects.

[SuperNova]

cool!  Dan do you like the idea?

[HallowedError]

To me hydrodynamics wouldn't make sense for planets, especially solid ones since they all but blow up. This may work for gas giants but 1,500 particles doesn't seem like enough but more would kill low-grade computers.

Sorry, not trying to be negative. This would be cool with stars and gas planets if you could figure out a way to lower the computation though.

[atomic7732]

To me hydrodynamics wouldn't make sense for planets, especially solid ones since they all but blow up. ...
...Sorry, not trying to be negative.

After the planets collide the rock MELTS under the heat, and solidifies WAY later. You know how the Earth took MILLIONS of years to cool after the asteroid collided to form the moon?

[HallowedError]

True, but no one proved that the moon came from an asteroid hitting us. But doing this would require extensive mesh programming.

[atomic7732]

Ummm, dan, do you like this?

[Dan Dixon]

Yes. I like this idea.

I don't see why it needs to be a separate program this is just how 'advanced' collisions should work.

After the interface update I'm going to spend some time making the graphics look better and the collisions more spectacular.

[atomic7732]

a new program ONLY for this, but you can implement it in US too.

[Naru523]

After the planets collide the rock MELTS under the heat, and solidifies WAY later. You know how the Earth took MILLIONS of years to cool after the asteroid collided to form the moon?

Wasn't Theia a planet? 

[atomic7732]

Well, it's an asteroid and a planet. It depends.

[Andreas]

It don´t depend.

It was a protoplanet and so was earth.
I wouldn´t call an object with 4000 Km diameter an asteroid.

[atomic7732]

people say asteroid thiea sometimes, but yeah.

[Naru523]

It don´t depend.

It was a protoplanet and so was earth.
I wouldn´t call an object with 4000 Km diameter an asteroid.

I thought it was 6000... Since it said it is about the size of Mars.