How to swap out the polygons for Skeleton2D and Bone2D

honeymilk06

Hi everyone, I want to swap out the components of my sprites. I use the Skeleton2D and Bone2D because I can't draw animation properly, and using Spine is difficult for me. Also, I want to try using the skeleton, because I use the pixel sprite way before and never this way. So I've tried to only swap out the texture, but swapping out the UV is much harder. I also tried swapping out the polygon. I created a new polygon for another set of UV and texture, and assigned bone and weight to it, but I can't get it work. I think of two other way, 1. Make UV large enough to contain anything draw inside. The problem is that it may look weird and waste performance. 2. duplicate lot's of same bones for every single character, which will take me tons of time

So I want to know if there is other ways, or If there is some tutorial I didn't find. Thanks for any advice:)

TwistedTwigleg

What I would recommend doing is either going for method 1 - having the UV large enough to cover all variations you want to make - or have Polygon2D nodes for each texture and then use the visible property to show/hide them based on what variation you want.

If you do not need the Polygon2D point deformation, where a bone only effects a few vertices of a Polygon2D, what you could do is have Polygon2D node(s) as children of the Bone2D nodes directly. Then changing the visibility should work nicely and because it's a direct child of the Bone2D, you would only need to setup the Polygon2D for each variation and make it a child of the correct Bone2D node.

cybereality

Not sure about 2D, but in 3D you can use BoneAttachment. So you have a base skeleton with no art that is animated. Then you can attach BoneAttachments (like points) and then you can add an object that will follow the position and rotation. This won't work for deformation, though. But if you made each Sprite a separate piece (like 1 Sprite for the lower arm, 1 for the upper arm, etc.) then it should work. At least in 3D, haven't tried it in 2D.