We are currently using 2D Toolkit to manage atlases in Unity. We have one of our Spine animated characters implemented using 2D Toolkits' SpriteCollection, which alone works fine. This character has no weapon or shield bounding box or region attached to it in the Spine project. It does, however, have one bone for the shield and another for the weapon, and each of those bones have a slot and a skin placeholder.

The weapons and shields that need to be attached exist in a separate 2D Toolkit SpriteCollection that we are using for equipment. I have been trying to follow examples, but it just does not work, no exception is thrown, it just doesn't show up. Here is what I have so far.

   

public tk2dSpriteCollectionData DataCollectionSpriteTK2D;

void Start()
{
_animationSkeletonUnitySpine = GetComponent<SkeletonAnimation>();
_skeletonSpine = _animationSkeletonUnitySpine.Skeleton

RegionAttachment attachmentRegionCollectionSpriteWeaponDagger =
            new SpriteCollectionAttachmentLoader(DataCollectionSpriteTK2D).NewRegionAttachment(null, "Dagger", "Dagger");

int indexSlotWeapon = skeleton.FindSlotIndex("Weapon");

_skeletonSpine.Skin.AddAttachment(indexSlotWeapon, "Weapon-Dagger", attachmentRegionCollectionSpriteWeaponDagger);
}

Any idea what I'm doing wrong?

Thx in advance.

Hi Pharan,

Thanks for answering my question.

In your answer, you mentioned that NewRegionAttachment was insufficient to define and prepare the RegionAttachment, and that I should mimic what normal loaders do. You also referred to the attachment loader I was using as "your SpriteCollectionAttachmentLoader".

The fact is I'm attempting to use the Spine.Unity.TK2D.SpriteCollectionAttachmentLoader that is included as a module of Spine Unity, possibly incorrectly, which leads me to ask the next question.

What is the prescribed order of operations, if there is one, to be able to load a sprite from a 2D Toolkit SpriteCollection, and attach it to a Spine Skeleton in Unity.

Thanks Pharan.

Hi Pharan,

So I'm still a little confused.

region.Path = path; // path? Isn't the path just a reference to a sprite in the sprite collection? If not, what should I put here?
//units scales are in Unity world space.
region.x = 0; // Will this work just as a test?
region.y = 0; // Will this work just as a test?
region.scaleX = 1; // Will this work just as a test?
region.scaleY = 1; // Will this work just as a test?
region.rotation = 0; // Will this work just as a test?
region.width = width; // Shouldn't this already exist in the sprite collection? If not, what should I put here?
region.height = height; // Shouldn't this already exist in the sprite collection? If not, what should I put here?

region.r = red value; // Shouldn't this already exist in the sprite collection? If not, what should I put here?
region.g = green value; // Shouldn't this already exist in the sprite collection? If not, what should I put here?
region.b = blue value; // Shouldn't this already exist in the sprite collection? If not, what should I put here?
region.a = alpha value; // Shouldn't this already exist in the sprite collection? If not, what should I put here?

region.UpdateOffset();

The questions next to the lines of code make me think I don't understand something.

n3xes

Hi Pharan,

So I tried your solution. The bad news is it still didn't work, and all of the properties you mentioned had to be set are already set when this line is called.

RegionAttachment attachmentRegionCollectionSpriteWeaponDagger =
            new SpriteCollectionAttachmentLoader(DataCollectionSpriteTK2D).NewRegionAttachment(null, "Dagger", "Dagger");

Here are the properties:

• attachmentRegionCollectionSpriteWeapon "Dagger" Spine.RegionAttachment
• base "Dagger" Spine.Attachment
  A 1 System.Single
  B 1 System.Single
  G 1 System.Single
  Height 0 System.Single
• Offset System.Single[8] System.Single[]
  Path "Dagger" System.String
  R 1 System.Single
  RegionHeight 500 System.Single
  RegionOffsetX 0 System.Single
  RegionOffsetY 0 System.Single
  RegionOriginalHeight 500 System.Single
  RegionOriginalWidth 102 System.Single
  RegionWidth 102 System.Single
• RendererObject "Weapons-SpriteAtlasMaterial (UnityEngine.Material)" System.Object
  Rotation 0 System.Single
  ScaleX 1 System.Single
  ScaleY 1 System.Single
• UVs System.Single[8] System.Single[]
  Width 0 System.Single
  X 0 System.Single
  Y 0 System.Single
  a 1 System.Single
  b 1 System.Single
  g 1 System.Single
  height 0 System.Single
• offset System.Single[8] System.Single[]
  r 1 System.Single
  regionHeight 500 System.Single
  regionOffsetX 0 System.Single
  regionOffsetY 0 System.Single
  regionOriginalHeight 500 System.Single
  regionOriginalWidth 102 System.Single
  regionWidth 102 System.Single
  rotation 0 System.Single
  scaleX 1 System.Single
  scaleY 1 System.Single
• uvs System.Single[8] System.Single[]
  width 0 System.Single
  x 0 System.Single
  y 0 System.Single
• Static members

I'm not sure where to even go from here. Please help.

n3xes.

Hi Pharan,

I tried this.

private void Start()
{
   RegionAttachment attachmentRegionDagger = NewRegionAttachmentFromSpriteCollection("Wpn-Dagger");       

   _indexSlotSkeletonSpineEquipmentHandLeft = SkeletonSpine.FindSlotIndex(NameSlotSkeletonSpineEquipmentHandLeft);
   _skeletonSpine.Skin.AddAttachment(_indexSlotSkeletonSpineEquipmentHandLeft,
                             "Eqpmnt-Hnd-Lft",
                             attachmentRegionDagger);
   _skeletonSpine.SetSlotsToSetupPose();
}

Is this what you meant? Because it didn't work either. :bang:

-n3xes

THAT WAS IT!!!

Hi Pharan,

I couldn't tell that the name parameter meant skin placeholder name.

So for the sake of others reference. The "name" parameter of the Spine.Skin.AddAttachment(int slotIndex, string name, SpineAttachment attachment) method requires the skin placeholder name to be specified as the argument.

So after some scaling issues are fixed by scaling the attachment's Height and Width using this code.

float scaleSprite = 1.0f / (DataCollectionSpriteTK2D.invOrthoSize * DataCollectionSpriteTK2D.halfTargetHeight);

attachmentRegionCollectionSprite.Height = attachmentRegionCollectionSprite.RegionHeight * scaleSprite;
attachmentRegionCollectionSprite.Width = attachmentRegionCollectionSprite.RegionWidth * scaleSprite;

The attachment is finally visible and the correct size. Only one problem left. It is not following the orientation of the bone. How can that be fixed?

Thanks.
-n3xes