Cargo bay doors and surface attachment.

[NecroBones]

Hey all, I have a bit of a question, that I'm hoping someone can help me with.

I'm trying to make some cargo bays, and I want to replicate the behavior of the (now stock) SP+ cargo bays, in that the body of the bay accepts surface attachment, but the doors do not. So far, I have the collision meshes animating properly, but surface attachment appears to be all or nothing. If I allow attachment, the VAB allows parts to be stuck to the doors, which of course results in "floating" parts, and the doors pass through them when animating.

Is there a layer setting or something, that will specify certain collision meshes as being non-attachable for surface attachment?

[NecroBones]

Hilariously, when googling for an answer to this, I'm finding my own thread here.

[lo-fi]

I had a go with the .mu importer and a little plugin to write the layer of specific game objects to the log. No luck so far. What appears to be bay door colliders do not seem to exist (gives null-ref), and the doors themselves are layer zero. Unless it's driven with tags...

Ask Porkjet?

I'll keep you posted if I do find anything - it will be useful for one of my projects.

[lo-fi]

Bingo!! The tag is set to NoAttach.

For reference, I used the following code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using UnityEngine;


namespace UtilPlugins
{
    public class LayerFinder : PartModule
    {
        [KSPField]
        public string objectName;


        GameObject _gameObject;
        [KSPField(isPersistant = false, guiActive = true, guiActiveEditor = true, guiName = "layer")]
        public string thisLayer;
        [KSPField(isPersistant = false, guiActive = true, guiActiveEditor = true, guiName = "tag")]
        public string thisTag;




        public override void OnStart(PartModule.StartState state)
        {
            base.OnStart(state);
            _gameObject = this.part.FindModelTransform(objectName).gameObject;
            if (_gameObject != null)
            {
                thisLayer = _gameObject.layer.ToString();
                thisTag = _gameObject.tag.ToString();
            }
            else
            {
                thisLayer = "object not found";
                thisTag = "object not found";
            }


            if (HighLogic.LoadedSceneIsFlight)
            {


                _gameObject = this.part.FindModelTransform(objectName).gameObject;
                if (_gameObject != null)
                {
                    Debug.LogWarning("Layer is:" + _gameObject.layer);
                    Debug.LogWarning("Tag is" + _gameObject.tag);
                }
                else
                    Debug.LogError("object not found");
            }
        }
    }
}

MODULE
{
    name = LayerFinder
    objectName = BayDoorL1
}

License: CC0

It will spit the layer for the named GameObject out to the log, as well as the GUI menu.

Edited December 11, 2014 by lo-fi
Updated source

[lo-fi]

Yes, in so far as it's applied to the gameobject that has the mesh collider component applied, which also happens to be the mesh itself. There are some confusing artefacts from the .mu > .mu import process that threw me a little to start with, so ignore comments about the collider object not being present.

I was going to message you, as this will no doubt be useful for your Skylon; you've ninja'd me rather successfully Just posted a thread in add-on dev I was going to put forward for submission to your modding links too.

[CaptainKipard]

Ninja'd indeed. since I posted the question I managed to read your new thread, delete the question and already add it to the compilation, lol!

[lo-fi]

Haha! Epicly ninja'd

[nli2work]

great bit of detective work lo-fi. little bit of undocumented feature no doubt would benefit many.

[lo-fi]

Cheers, I hope so! Seemed too good not to spread the word

[NecroBones]

Bingo!! The tag is set to NoAttach.

Great! I was going to try contacting PorkJet today if we didn't figure anything out by now. Awesome job!

[NecroBones]

Bingo!! The tag is set to NoAttach.

Great! I was going to try contacting PorkJet today if we didn't figure anything out by now. Awesome job!

Confirmed. Tested, and working.

Thanks!

[lo-fi]

You're welcome, glad to be able to help.

[Tokamak]

I hope it's okay to resurrect an old thread, but this is the closest I've found to an answer to the question NecroBones asks. I'm also trying to make a cargo bay part, and I have animations and collision meshes and all of that working, and want to disallow attachment to the doors.

I don't quite understand the answer given, however. I've successfully made animated parts so I thought I understood more or less what goes into the models and configs, but I've not run into the issue of tags, so I'm not clear on what I am meant to do. I'd really appreciate it if someone could nudge me in the right direction. 

[Tokamak]

Ah, nevermind. I think I've got it. If anyone else finds this and is asking the same question, this may be useful: