.obj -> .sur converter

This just get’s more confusing all the time.

Hardpoints that are included in vanilla sur files should be included in the sur file if they are fitted to your model. If not then you will risk having intermittent crashes during combat if one of them is hit.

These are:

HpCloak01 (-xx)
HpCM01 (-xx)
HpMine01 (-xx)
HpMount
HpShield01 (-xx)
HpThruster01 (-xx)
HpTorpedo01 (-xx)
HpTurret01 (-xx)
HpWeapon01 (-xx)

Hardpoints represented by the usual triangle only and not having a hardpoint sur mesh will generate the following message during the conversion:
“Warning, no matching vector pair found! Adding new Triangle Group.”

Here below is an .ms3d file of vanilla hardpoint meshes, to normal vanilla FL scale.

Here is how to use them:

After exporting your model .cmp file, merge this hardpoint sur meshes file with your model in MilkShape, and save it as a new .ms3d filename so you don’t overwrite your model file, in case you need to make another .cmp file. I usually add “Surs” to the end of the filename, e.g. “myNewShip.ms3d” and “myNewShipSurs.ms3d”.

Make your model groups convex by selecting the ones you want and using the ConvexTool, then move each new convex mesh above the original group to maintain your group and hardpoints order. Ensure that the convex mesh name now has the same name as the original group and with “_lod1” suffix, and delete the original group. Do this with all the new convex meshes.

Then move each hardpoint Sur mesh you need to the place of the triangle representing your hardpoint, rename it to the same name as your hardpoint, and delete the original hardpoint triangle. The hardpoint meshes must be named “HpThruster01” etc, and must NOT have any “_lod1” suffix.

You can resize the sur mesh to suit the weapon or equipment that it is covering.

You can also make your own hardpoint sur mesh if you prefer, just be sure it is entirely convex and very simple.

Copy the same hardpoint mesh shape for more hardpoints of the same type.

Delete hardpoints in your model that aren’t in this mesh file, because they don’t need sur meshes, e.g. HpEnginexx (the engines use the sur shapes for the engine groups).

Finally, delete any hardpoint meshes for hardpoints that you don’t have in your model,e.g. HpCloak01, HpMine01, HpTurret01 etc.

Save again and export your .obj file, then use the obj-sur converter.

He he, way ahead of you there, StarTrader.

I attached a hexed version of Milkshapes Convex Tool. It doen’t add _convex but _lod1 to the end of the convex model. Its standard polycount is 256 instead of 1024.

Good stuff guys.

I also uploaded the correct ConvexTool, on the other thread.

I am still unclear if the converter adds the “_lod1” suffix to sur parts?

Just about to do some testing.

No, you must have the _lod1 in your obj file. The Converter adds nothing.

Right, yes I just saw that.

It’s probably better this way, because the Convex Tool adds “_convex” or “_lod1” for the modified version, so this will distinguish the convex parts from the originals in MilkShape until they are deleted.

I’ve modified my earlier post to correct it.

Skotty, Schmack:

I am getting great surs, but I’m still not clear on how to use the group checkboxes, can you help please…

• I always check “Hardpoint” for hardpoints, of course.
• I always check “Static” for every group.
• I have not needed to make moveable parts yet.
• I don’t attach any group to another because I think this is to be used when I need to make a complex non-convex sur shape in a single part? I have not needed to do this yet because there is no 18-part maximum limit.
• If I remember, you mentioned that if nothing is checked for a part, that part will be attached automatically to “Root”, so if none of the parts have a check then this will result in a single-group sur file, all hits going to root?

Is this all correct, or do I really still not understand?

One more question please:

I have tried, but I still didn’t understand the first option checkbox: “If maximum depth of a gap in connected triangles is not greater than x.x, use convex hull, else splice connected vertices”.

Heheh - this is pogrammers’ talk!! The negative expression doesn’t help me, nor does mixing triangles (faces) with vertices… I’ve tried using it but couldn’t see differences, probably because I don’t know what I’m looking for and used the wrong test shapes?

Does this mean: “If the distance between two faces is more than x.x units, then merge the vertices for both faces (delete the two faces), but if it’s less, use the convex hull function”?? If so, why please, I don’t understand the reason? I would have expected the opposite?

An example model would help for this please if you can?

Thanks guys.

• I always check “Hardpoint” for hardpoints, of course.
• I always check “Static” for every group.
• I have not needed to make moveable parts yet.
• I don’t attach any group to another because I think this is to be used when I need to make a complex non-convex sur shape in a single part? I have not needed to do this yet because there is no 18-part maximum limit.
• If I remember, you mentioned that if nothing is checked for a part, that part will be attached automatically to “Root”, so if none of the parts have a check then this will result in a single-group sur file, all hits going to root?

The third point is not right:
The attach means you are able to parent a group to another group (instead to root). So just set this if you want to parent a group to another one.
With that you would be able to create some kind of group-chain, like a train where every wagon is a group and the locomotive is the root.

Skotty. wrote:
With that you would be able to create some kind of group-chain, like a train where every wagon is a group and the locomotive is the root.

Putting it as a last groups, connecting them like u said and marking them to be animated crashes the converter.
I am aware that its not suggested for player ships but wanted to see if on npc ship that can be animated.

Thanks guys, I will try to make some test models when I have time to determine the results and I’ll get back to you.

This is my tryouts!
Still I didnt started animating them with vodka’s MS tut.
Ma aim is HIGH! A lot of animation I want to make!

• Head, Tail and Wings to bend
• Legs to stretch
  ( maybe also to fart! ^^ )

For start I would be happy if I can have animation on head and tail. Second setting produces valid sur (first is I know maybe wrong).

And one more I need! As Im out of luck to make proper wireframe, possible from the attached .obj file to make one simple and transfer it trough UTF editor in original CMP?
Must be a way to somehow place 10-15 cubes for groups as wireframe.

Like this? Same thing.
No rush, its not that important, main thing works.
Also, if one of parts is missing (like one wing), animations doesn’t work for rest.

I was wondering if anyone was having similar issues:

When other ships, (players or NPCs) collide with the .sur there’s occasional freezing of the screen (for some lasts 1-2 seconds, other it’s 10-20 seconds). Sometimes, though, there’s crashing. I’ve used the latest version of the obj–> sur tool, so that’s not an issue. I put HpMount hardpoint on all the ships (or the wireframes don’t work). That’s it for hardpoints, though.

I just don’t know if it’s a problem the way I’m making them OR if it’s just something in the obj–>sur tool. I’m hedging my bets it’s on me, though.

Yep, my fault. I redid the weapon .surs and the lag is gone.

I had problem with O-shape sur’s, they work incorrectly, frequently it is possible to fly through by surface from inside of the object. How to a fix them?
On screenshot I have represented preparation of sur from 12 groups.
I have made much grouped sur’s for the ships, they work normally.