Can I position a slot?

mortalus

I'm having a problem changing slots within unity, I can change the slot, but it comes in rotated and at a wrong position compared to original location.

Images:
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I really hope it's a stupid error on my part, but so far googling and trying has done nothing.

So my question: How can I change the position of a slot, OR what am I doing wrong that it gives a different position to the slot.

mortalus

Pharan

Hey!
We received the email.
You seemed to be doing something more complicated than what you've mentioned in this post.

Anyway, slots don't hold positions. Each attachment has its own position offset from its slot's parent bone. RegionAttachment has x and y. The vertices of MeshAttachment is essentially a bunch of those.

So if you need to position an attachment exactly similar to another attachment, say they were RegionAttachments, then you'd do it like this:

Slot slot = skeleton.FindSlot(...your slot);
RegionAttachment original = slot.Attachment;
RegionAttachment newAttachment = ...your brand new created attachment from somewhere

// Copy and update new attachment offsets.
newAttachent.X = original.X;
newAttachment.X = original.Y;
newAttachment.Rotation = original.Rotation;
newAttachment.UpdateOffset();

mortalus

Right, I'll provide some more information! I tried what you commented, but I'm still not getting anywhere.

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This is the hierarchy in Spine, and all I am trying to do is change the slots in unity with the sprites (not on a sheet/in the actual export) because the idea is to use 100+ different sprites for the slots.

On the Character I have added a skeleton Animation Script.

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Right now I'm trying to load a sprite, not an attachment into a slot. So I found the AttachUnitySprite option.

Right now I'm just bouncing between posts, but it could just as well be a problem on the spine model side? I'm still a student programmer, so it could very well be a basic thing I'm missing.

Thanks in advance

Pharan

You seem to be very new; AttachmentLoader and Skin classes aren't components. You could get null from using GetComponent with them.

AttachUnitySprite actually returns an uncast RegionAttachment. (We'll fix this in 3.5 to keep the type RegionAttachment).
Anyway, the code you want probably looks like this:

Slot slot = skeletonAnimation.skeleton.FindSlot("ogen");
RegionAttachment original = slot.Attachment;
Sprite sprite = Resources.Load<Sprite>("Avatar/Eyes/ogen-huilen");
RegionAttachment newAttachment = skeletonRenderer.skeleton.AttachUnitySprite("ogen", sprite) as RegionAttachment;

// Copy and update new attachment offsets.
newAttachent.X = original.X;
newAttachment.X = original.Y;
newAttachment.Rotation = original.Rotation;
newAttachment.UpdateOffset();

Note that the resulting RegionAttachment will also have an offset according to the Unity Sprite's pivot value.

mortalus

As I mentioned in the post before I am very new, being a student, yes. Thanks.

The problem I am still facing is the fact that the original attachment appears to be an Attachment, not a RegionAttachment, simply casting it as a regionattachment results in a lot of problems and no change in the actual slot.

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I can change it all to Attachments, but this will not result in me being able to position the attachement.

Pharan

Oh, slot.Attachment could be a bunch of things. The Attachment type is the base type.

Just cast that as a RegionAttachment by saying

RegionAttachment original = slot.Attachment as RegionAttachment;

Note that the as operator will give you a null if it's not actually castable, or if it's an actual null value.
So you will want to do the typical and necessary null checks or in certain situations, you will get null exceptions.

I don't think we can proceed much further with these basic things as this forum is support for Spine and not for C# or Unity.
But as long as it's related to Spine, please note down what exactly the problems are rather than just saying "results in a lot of problems".