Flesh Dynamics

Flesh Dynamics

Procedural soft-body motion and collision response for animated characters in Unity.

Flesh Dynamics adds secondary motion directly on top of your existing SkinnedMeshRenderer animation. Paint the areas that should feel soft, tune their material response, and let the system handle jiggle, impact deformation, volume preservation, and Rigidbody interaction.

Key Features

• Paint-Based Soft Tissue
  Paint exactly where physics should affect the mesh using separate Influence and Softness channels.
• Volume-Preserving Deformation
  Keeps soft regions feeling full and organic instead of collapsing like thin cloth.
• Impact Spread
  Collisions propagate through neighboring topology, creating smoother compression and more natural whole-region jiggle.
• Full-Body Collision
  Make the entire skinned mesh collidable, even when only certain areas are painted soft. Unpainted areas remain rigid and animated.
• Two-Way Rigidbody Interaction
  Dynamic objects can actually react to the character. Throw or shoot a Rigidbody at the mesh and it can compress the flesh and bounce back.
• Animation Friendly
  Works as a secondary layer over your existing animation and rig rather than replacing them.
• GPU Deformation + Burst Jobs
  Designed to stay lightweight using GPU vertex deformation, Unity Jobs, Burst, and sparse collision proxies.
• Model Compatibility Options
  Includes both fast post-skin deformation and a compatibility fallback for more unusual skinned-mesh setups.
• Built-In Painting Tools
  Paint, add, subtract, smooth, preview heatmaps, and tune everything directly inside the Unity Editor.
• Unity 2022 and Unity 6 Support
• Install Mathematics and Burst for the plugin to work correctly
• Current project is in URP please use the built in Unity material converters to convert them.

Great for breasts, belly, glutes, skin, ears, creature tissue, tails, soft appendages, and other secondary-motion effects.