Using Mega prims in physical vehicles

I have a question about using a mega prim in a physical vehicle. I want to make an airship using a scuplted 100 x 100 x 100 sphere. Are there any there problems I should be aware of? I know this is a big prim and linking might be a proplem. Once parts are linked, what is the furthest you can move them editing linked parts?
Would there be other problems with sim crossings or going off world with size? If there are these problems are there any scripts that would allow to work?

I may also make a detailed non physical version as a skybox for living.

Just realize that you'll be hitting a lot of things, and that depending on the mega you use (Natural versus tortured) your object may move very differently than you expect.

Also, if you go to the Forum Cartel Hangout in world, there's the FC Mothership among the freebies, which is an example of a giant spherical airship, basically, so it's definitely possible.

Keira,
Thanks for the info on the FC mother ship. I'll have to go check it out.

The airship mega prim will be sculpted. Something I found is that the sculpted mega prim acts likes it's phantom, but it's not. So once you link, everything acts phantom. This could be good, not causing problems bumping into anything, but then you can't stand up and walk around in it.

I found trying to link things is a problem. You can move prims close together to link and then edit linked parts and move them where they should go, but they won't stay where you put them over 50 meters. They just move themselves to where they are comfortable.
Is there any way to link things and make them stay where you put them on something this big? If you can't linke the whole think I don't think even a nonphysics move script will work.


I may end up just making it smaller or just a skybox

Nope, no way to link something that big into one object without perfect conditions (Which may not exist), so it's not really worth attempting.

A skybox would be a much, much better option in this case. Especially considering the 32 prim limit on physical objects, even if you managed to have it huge there'd be no detail within the bulk of it's space, so it'd mostly just be a big empty sculpty.

It looks like it will have to be 50 meters long..I can still keep the cabin interior the same size, just shorter in length. I think I'll still make a skybox version that is 100 metes long.

Using sculpties you can make a lot of parts with one prim that you would need many regular prims to make, so you can still have a great deal of details. I did a mock up interior which included two 50 mtrs megas and was less then 9 prims, that included a table top and 2 seats which can be made with one sculpt. I made a second mock up using 10x10x10 prims 50 meters long, which ended up being 14 prims. I'll probably be using smaller maga prims for the longer interior parts. I managed to find a box of 7000 mega prims up to 50 mtrs long on Xstreet for free.

There are about 8 more prims required for the rest of the ship including the airship prim, so there should be plenty left for added details.

Have you or anyone else noticed if sculpted prims act like they are phantom?

I've run into another problem with the sculpty. I am using a 10 x10 x50 mega prim for the sculpt so now I am not using "keep scale" on rendering the scultp map. The airship sculpt has an opening and has been hollowed out in Blender so you could go inside, but in world I am not able to enter inside the sculpted prim. Why am I not able to go inside the sculpted prim and is there a way around this? I did try a script from SLWiki that was to make a child prim that it is put into phantom, in a linked set, but the script has an error.

Sculpties do not have their proper physical representation. Instead, they bump and walk like they are spheres, torii, planes, etc, depending on the stitching type.

To cause it to act properly, you need to have invisible non-phantom prims in a basic representation of the shape, and keep the sculpt phantom.

Also, realize that inside of a sculpt is nothing. You cannot see the outside walls from within unless you specifically build it with inner walls as well. It acts like an invisible texture, essentially.

I did notice the inside of a sculpt is invis, which is ok. I am going to have an interior of normal non-physical prims inside for you to walk around and sit in, but keeping within the physical vehicle prim count will determine the final look of the interior.

Everything I've built up to this project has been small one or two person vehicles, Although one of my other projects is a tiny plane with a wing span of .5 mtrs for a tiny AV. It presents certain problems I yet have to solve. Finding all the limitations and work arounds for making a large vehicle is definitely a learning expercience, but I always seem to come up with ideas that are a challenge, which I don't mind With all your help, hopefully this airship will become a reality...LOL..did I just say that...should have said a virtual reality

So as it stands, the airship will be 50 meters in length, having 2 mega prim scuplts which will have to be phantom, requiring a phantom child script which only makes the prims the script is in phantom, when everything is linked.