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Feature suggestion - Dynamic parenting.

herespraveen

I don't now if this has been already asked here or not. But how hard is to include dynamic parenting to spine? Dynamic parenting as in changing the parenting of the bones during the animation. There is a particular animation where the character I'm animating (a robot) dies and the parts of the robot falls off separately and some parts roll away after falling to the ground. In my case the chest part rolls off which is parent to the arms and shoulders. So when the chest part rolls off, the shoulders and the arms follows it which I don't want to happen. I want them to stay on ground. If dynamic parenting was possible then this would make it a lot easier. If not possible, is there a different method of doing this animation? :nerd: :whew:

Nate

It would complicate things more than it helps. To achieve the same effect, you can hide the image in one slot and show it on another slot that is on a different bone.

herespraveen

Thanks for replying so fast. But if I go with this method there would be too many bones inside one skeleton. Already there are many bones in the skeleton which would make this messy. I already saw the dynamic parenting in Spriter by Brash Monkey. That's why I was wondering if this was possible in spine. Dynamic parenting would help in other areas where your character needs to switch weapons between hands. But anyway, thanks for making this awesome program.

Pharan

You have a number of options if you want to do the break-apart animation.

One option is to make a duplicate skeleton with all the same images and slots and bones but where parenting is different. Then at runtime, you just swap out the two skeletons and play the animation you need.

If you use Unity, there's an easier (I think?) option coming soon.

herespraveen

Sorry for replying so late. I'm currently using the same method as Pharan mentioned. I was looking for a method where I could use the same skeleton without adding additional bones. You never know if someone has already done it or not.

I'm sorry for asking a completely out of topic question but I also want do a trailing particle animation for an effect. Similar to the ghosting function in spine. I want the particles to fade off. Or a link to an animation would be sufficient for me. I tried looking for it but couldn't find any. Just need a reference. I'm new to 2d animation. 🙁
My company is currently using corona.

tonyc

Sorry to semi hijack this.. but...

Is it the case then that there will NEVER be dynamic parenting in Spine?

Nate

Probably never. I don't think it is the best way to do things. Once we have skeleton attachments there is even less need for it.

Søren

Dynamic parenting is a pretty bad idea, for example it would break an IK chain. There is a much better solution for it, and that would be position constraint which could be turned on/off (keyable). A position constraint would work by placing a bone outside of the hierarchy and then you constrain the position to another bone without parenting it. I don't know if this is something that will eventually make it in though. It's very similar to a skeleton attachment except you can do it on single bones.

herespraveen

Shiu написав
Dynamic parenting is a pretty bad idea, for example it would break an IK chain. There is a much better solution for it, and that would be position constraint which could be turned on/off (keyable). A position constraint would work by placing a bone outside of the hierarchy and then you constrain the position to another bone without parenting it. I don't know if this is something that will eventually make it in though. It's very similar to a skeleton attachment except you can do it on single bones.

Yes, if something like this is possible then it could make animation of characters with extra props more easy. Because right now I have to place a weapon outside the bone hierarchy of the hands. It's quite tedious to key the position of the weapon according to the movement of the hands. I have my reasons for putting the weapon out the hierarchy. I sure hope constraining bone would be available in the future. :clap: