Questions tagged [skeletal-animation]

Skeletal animation is a technique by which a complex mesh (or "skin") is animated through the animation of a simpler hierarchical collection of geometry (the "bones").

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How do I make the joints and weights skinned with the variables I'm using?

For some time now I have been trying to do skeleton animation using Rust and OpenGL(specifically the gl library), I loaded the animation information correctly(with the gltf library), the bone ids and ...
Arthur Sally's user avatar
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How to move the bones of a model by just pressing a key in unreal engine 5?

I have the following problem. I need to be able to rotate a bone (any bone) in a model in unreal engine 5.3. I cannot use the timeline. For example, if I press the space bar then I would need the arm ...
Nicolas Osorio Bustos's user avatar
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What is the best way to handle more bone weights than allowed in code?

I am currently attempting to incorporate animated models in my game engine, using Assimp to load the models. I can load and render the static model just fine, but when I try to enable the animation, ...
Tenebre's user avatar
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How to blend 2 different metahumans seemlessly during animation

I'm new on this site so please let me know if this is the wrong section to post to. I have an idea for a whole bunch of animations revolving around 2 semi-identical twins that live in the same body. I ...
Majd Odeh's user avatar
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How to animate multiple animation blueprints offseting time for each instance?

I'm new to Unreal Engine and would like to get an effect similar to this one: The idea is to have an Animation BluePrint with data from a Live Link Pose node to start with. To achieve the effect, my ...
George Profenza's user avatar
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How to implement skeletal animation for Signed Distance Field models?

When animating a 3D model, we want the surface of the model to remain continuous (such that, for instance, the limbs do not seem to slide on the torso, but stay attached at their position). In a ...
marked-off-topic's user avatar
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Make ready player me Avatar replicate animation from Mixamo by pressing an oculus quest2 controller button

I have a ready playerme avatar that I rigged with Final IK. I downloaded an animation from mixamo to play with this avatar. My goal is to animate the avatar with the downloaded animation once a button ...
Craving_gold's user avatar
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How to store animation data on the GPU?

I want to store my animations on the GPU via buffers (instead of using a single constant buffer which contains the current skeleton frame only), so the vertex shaders of the skeletal meshes can read ...
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How to apply shadows on an animated model

I have followed the learnopengl.com tutorial on skeletal animation, but it does not apply shadow on the animated model. Here is the vertex shader that is used to display the character. I suspect that <...
HenriV's user avatar
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Spine 2D Animation with Equippable Items Dynamically at Runtime

I am attempting to make a rigged animated character using Spine but this "base" character will be able to pick up items and equip them such as jackets, helmets, etc. This will be a 2D top-...
Wp3Dev's user avatar
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2D Runtime animation with different textures

We have a bunch of characters in our game. Although they look the same mainly, they do have differences. We are downloading the textures on runtime, generating an atlas that decreases the draw call, ...
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Clothing mesh penetrates character when imported into Unreal

I'm trying to import a .fbx file with animation from Maya, but the mesh has changed at some specific frames automatically, which makes my character intersect with the cloth. The mesh itself does not ...
EdwardW's user avatar
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Where should I design skeletons and animations?

I have just finished a course on Unreal Engine 5, where I have been introduced to managing animations through skeletons and different meshes. My question is, where should I design such animations? Are ...
SrJaimito's user avatar
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Prevent the vertex normals from being recalculated when a skeletal mesh is deformed?

I am trying to create a game with stylized shading like Arc System Works Style, which requires the normals to be edited by hand (I do so in Blender). However, after importing to Unreal Engine, these ...
LinguiniThePasta's user avatar
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PhysX Skeletal Animation

I am developing a game and using OpenGL for graphics API and NVidia PhysX for the game's physics. Recently I implemented skeletal animation from this site. The objects are read using assimp which ...
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Understanding matrix transformations for skeletal animation

I am working with Collada and GLTF. Say I have a humanoid with 3 bones with the following hierarchy: B0(root) → B1 → B2. Terminology: bind pose is the same thing ...
Kroma's user avatar
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Apply a mocap to multiple different models? -> modify gltf directly?

I am currently struggling with an animation I made that I would like applied to multiple models, all different, but from the same vertices. I already have a custom gltf importer ready but I need to ...
Kroma's user avatar
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Need help with Assimp skeleton animation

I have recently implemented skeleton animation in my custom engine by following this tutorial. I made several improvements based on that, and was able to load/play simple humanoid animations without ...
neo-mashiro's user avatar
1 vote
1 answer
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Animating 3D characters in 2D platformer where the characters don't look good from directly side-on? (Eg. Kirby from Nintendo)

I am working on a 2D platformer with 3D characters where the design/intention is somewhat similar to Kirby: https://www.youtube.com/watch?v=MuhLDoNobPw Specifically, Kirby does not look good exactly ...
mike's user avatar
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Rendering Unreal Engine 4 sequence: character timeline animations don't show, and behave as if they are in play mode

I have a cinematic sequence with camera cuts set up that can be previewed properly. These scenes involve human skeletal character animations that I made frame by frame in the timeline. Everything ...
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Why Generic Rigs won't matching? ( Unity )

1 part - Blender I made a character with animations in Blender. When importing in Unity, I decided to split the Armature and the Model into different FBX files. This is how we get 2 files: ...
White Raven's user avatar
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Humanoid Rig force knee of my character to rotate, but it shouldn't be

Demonstration of the problem - video My export settings My Unity import settings Rig Settings Animation Settings
White Raven's user avatar
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2 answers
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Humanoid rig breaks my animation

The humanoid rig behaves strangely with my animation from Blender. Here is a demo of the problem - video. Can anyone suggest what the problem might be?
White Raven's user avatar
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What does the Lock toggle in the Position Constraint Component do?

Even after reading the documentation, I just can't figure out what the parameter does. I experimented in Unity and set different parameters for Position At Rest and Position Offset. I succeeded in ...
White Raven's user avatar
2 votes
1 answer
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Are there common types of human skeletons in gamedev industry?

I have to decide which human(oid) skeleton I'll choose to do procedural animation with it in the future. I'm looking for a flexible set of bones that would not lead to painful model reskinning later. ...
Enbugger's user avatar
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Save current pose snapshot of a skeletal mesh as a new animation sequence asset from blueprint

What I'm trying to do is create a Blueprint Utility tool that lets me create an Animation Sequence asset to save the current Pose Snapshot of a skeletal mesh. I see there's Create Asset node from ...
Simone Lungarella's user avatar
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How to calculate local orientation of child relative to parent from only global positions?

I am trying visualize a human finger's pose with a 3D model in Three.js. The 3D model is composed of 3 bones that represent the proximal, middle, and distal bones of the human finger, connected in ...
Ietpt123's user avatar
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1 answer
956 views

Unity Animator Ignoring "Higher" Layers

I have a rather rudimentary layer set up: Lower Body: no mask, full weight, override. Upper Body: upper body mask, full weight, override. This works as intended. Standing Up: full body mask, full ...
Zoop's user avatar
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How to animate a customizable pixel art platformer character?

I am working on a 2d platformer which is made up of pixel art. I want to make my character customizable like in stardew valley. How can I implement it and create animations for my game like run , idle ...
Prince Kumar's user avatar
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1k views

Mixamo Rig Hierarchy Reference (In Text List/Tree format)? (modelling in Maya for use in Unity and Mixamo)

I'm trying to find a quick reference to match Mixamos rigging hierarchy. I'm confused over which bones are 'root' and how many bones in the spine/pelvis/chest etc. I want my characters I make in Maya ...
I_Keep_Trying's user avatar
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How can I add these bones to my meta human? Or is there a way I can make virtual bones count when retargetting?

Paid for animations thinking they would be fine and they mostly are but... the hands are using these IK bones that I do not have. Is there a way I can add the bones to my meta skeleton within unreal? ...
EdelweissPirate's user avatar
3 votes
0 answers
73 views

Is there a standard way to rig a humanoid? [duplicate]

I am using some placeholder humanoid models for my game, which will be replaced later. I am concerned that when I replace them, they will not work with my animations, due to different rigging. Is ...
Evorlor's user avatar
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Some of the model's vertices are incorrectly positioned in skeletal animation

Everything is almost ready 😣. I do not understand what the problem is. The animation works, but some vertices are not where they should be. I am using an SMD file from Half Life. I found that these ...
Тёма Басов's user avatar
29 votes
1 answer
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What is the standard practice for animating motion -- move character or not move character?

I've downloaded a bunch of (free) 3d warriors with animations. I've noticed for about 25% of them, the 'run' animation physically moves the character forward in the z direction. For the other 75%, the ...
ineedahero's user avatar
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FBX Import Errors: "Multiple roots are found in the bone hierarchy"

I followed these steps: I exported my character from Blender as an fbx file I went to Unreal Engine and make a new folder I paste the fbx file in that folder I put and tried to put it with a ...
Crockadile Hunter's user avatar
1 vote
0 answers
420 views

Skeleton bone in incorrect spot in-game yet, blender rig, skeleton mesh and physics asset are all correct and behave properly

I've made a custom character and rigged it in blender. Then exported/imported into ue4. It behaves properly in the PHAT and the skeleton mesh looks fine and it all behaves properly in the simulations. ...
thissiteistoxic's user avatar
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0 answers
53 views

IK script causing glitchy movement

I have a FPS character game object, which consists of just the arms. I made this IK script off of a tutorial. ...
KI.'s user avatar
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216 views

Blender animation's curled fingers are splayed-out when played in Unity

I have exported my character into Unity and all the animations came with it. At first, I thought I was good to go but then I made a jogging animation. In blender the hands are gripped like this: When ...
Jake's user avatar
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Unwanted blendspace bone displacement in UE4

My characters hands "fall off" in the blendspace between the animations. Looking for a way to fix it, if anyone has any ideas.
Angerboy's user avatar
2 votes
1 answer
211 views

No local transform with skinned mesh with assimp?

I'm trying to add skeletal animation to my engine and I'm importing meshes with assimp, but I think I misunderstood the skinned mesh concepts (or don't understand assimp). When I import a model, ...
Ivan Neves's user avatar
2 votes
1 answer
3k views

mesh gets twisted wildly when trying to use Unreal's mannequin's skeleton

I have modelled a simple mannequine and made a skeleton for it in Blender. As far as I can judge, this skeleton copies the Unreal's standard mannequine's skeleton perfectly... All the hierarchy and ...
Serhii's user avatar
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How can I allow player-created content to add morphs to Daz Genesis 8 characters(UE4)?

We use Daz Genesis 8 characters in our project. Content creators would load their morphs from Daz to our game. We would like to add these morphs to our characters so they can be modded, edited and ...
formatc2013's user avatar
3 votes
1 answer
2k views

How to support importing .uasset files in game for content creators(UE4)?

I would like to support importing clothes(as SkeletalMeshes) and props(as StaticMeshes) as uasset files into game for content creators, which obviously have not been packaged with the game. Basically ...
formatc2013's user avatar
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27 views

Blender bone animation with extruded vertex not moving as expected

I'm really new to blender. I've managed to make a model body and bone structure. I've two problems: But when I try to rotate the arm bone, my entire body moves. Why is this happening? I was ...
Nischit Pradhan's user avatar
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310 views

How would I combine FABRIK inverse kinematic results with a skeletal animation?

So, I've been working on a skeletal animation system in OpenGL/C++, and it's actually not coming along too badly. I can play animations, which I do by sending bone transform matrices to my animation ...
Danny's user avatar
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1 answer
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ASSIMP Skinning seems to be somewhat inverted

I'm currently implementing Skinning using Assimp as my asset importer. I've relied heavily on the following tutorial in order to skin meshes (http://ogldev.atspace.co.uk/www/tutorial38/tutorial38.html)...
Sammi3's user avatar
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2 votes
1 answer
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When setting Rigidbody.isKinematic true collider won't work anymore

I have a rigged 2D character and used Collider2D/Rigidbody2D/HingeJoint2D to body parts to implement ragdoll. It works fine, but I needed to run ragdoll physics only when character is dead. So I made ...
modernator's user avatar
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1 vote
2 answers
175 views

Rotating 2D bone in LateUpdate have jittering issue

I made a skinned 2D character and applied IK to each hand and leg. In my game, player can aim up and down by moving fire joystick up and down. This is implemented by update "chest" bone's rotation in ...
modernator's user avatar
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How is root motion done in Skeletal animation

I am using Assimp library to load bone and mesh data and using basic interpolation to accomplish the animation part. Right now I want to move my character position with animation, i.e. root motion. ...
videogamechef's user avatar
1 vote
2 answers
175 views

Parts of 3D model disappear during animation

I'm trying to properly play an animation done in Blender 2.8 inside my OpenGL application. When the animation is running, it happens that at some particular frames, some parts of the 3D model "...
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