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With the Spring Controller Animation Blueprint node, you can apply a controlled stretch to bone from a character's skeleton.
Here is an example of the Spring Controller node being used to simulate movement of non-animated bones by applying a force in the opposite direction for the character's motion.
 (convert:false) |
 |
| Spring Controller Disabled | Spring Controller Enabled |
Property Reference
Here you can reference a list of the Spring Controller node's properties.
| Property | Description |
|---|---|
| Spring Bone | Select the bone from the character's skeleton to apply the Spring Controller node to. |
| Max Displacement | Set the maximum distance the bone can stretch from the reference pose location, in Unreal Engine units, when Limit Displacement is enabled. |
| Spring Stiffness | Set a multiplier value used to calculate the stiffness of the spring. Larger values require more bone velocity to displace the bone and result in a larger applied force with quicker reactive movements. |
| Spring Damping | Set a multiplier to reduce the Spring Bones's velocity, to create smoother and more controlled results. |
| Error Reset Thresh | Set a threshold to reset the Spring Bones in Unreal Engine units. If the Spring Bone stretches more than this amount, it resets in order to avoid errors introduced by sudden, large displacements such as those caused by teleporting Actors. |
| Limit Displacement | When enabled the Max Displacement property will be considered. |