Soft Body（V2.4.0）

Feature Overview

• Set up multiple styles in the Style3D component, adding the character asset created in the previous step as clothing.

• In the Obstacle Property, uncheck Collision.
  

• Through the above configuration, the character asset (clothing) is set as a new collision body instead of colliding with the character skeletal mesh.

2. Configure GoalShape for the Character Asset (Clothing):

• Set the character skeletal mesh as GoalShape.

• Select all the pieces and enable Attach, uncheck Attach Obstacle.

• Paint the areas on the character that need to be flexible.
  • In the Smd Property, select Attach Strength.
  • Set the AttributeValue to 0.9 (a value of 1 means fully attached to the skeletal mesh, not a soft body; a value between 0 and 1 means a soft body).
  
• Paint the chest and underarm areas as a soft body.
• Add GoalShape skeletal mesh in the outline.
• Under the character skeletal mesh, add a new skeletal mesh component (at the same level as the Style3D component) and rename it GoalShapeMesh.
  
• In GoalShapeMesh, add the character skeletal mesh and animation (the same as the main skeletal mesh).
  

• Uncheck Visible.
  

3. Hide the Main Character Mesh:

• Attach animation to the character and hide the mesh display.

• Set the Tick Option to Always Tick Pose and Refresh Bones.

4. Simulation:

• Use Posefitting to fit the clothing to the animation.

• Switch the mode to Cache Record and record the cache.

Common Issues

• Flexible body area collapses during cache recording:
  • Increase the Bending property in the physical attributes of the general mesh asset created by the character mesh to make the flexible area harder and maintain its shape.
  
• Does the Attach constraint painted on the body still work after using a soft body?:
  • Although collision with the character skeletal mesh is disabled, the previously set clothing Attach to the body still works.
• Performance degradation after using a soft body:
  • The addition of clothing assets in the soft body leads to normal performance degradation.