The RBC Collisions panel allows users to add rigid body physics to objects in their vehicle animations. This feature allows collisions and interactions between vehicles and their environment. The buttons act on the selected objects; the settings shown are those of the active object.

Collision Type

• Collision Type: Users can choose between "Active Collision" and "Passive Collision".
  • Active Collision: Adds Collision settings for moving objects (objects that can be pushed around, like cones or boxes).
  • Passive Collision: Adds Collision settings for stationary objects (ground, walls, ramps).
• Clear Collision: A button to remove any collision from object.
• Copy From Active: A button to copy collision settings from an active object to selected objects.

Collision Settings

NOTE: Collision settings will only show if the Active Object is a Rigid Body Object.

• Link object to Ground Collection: When enabled, the object is added to the RBC Ground Collection, so wheels, tire marks and other ground features treat it as ground. Useful for passive objects the vehicle drives on, like ramps.
• Mass: Determines how heavy the object is in the physics simulation
• Dynamic: When enabled, the object is affected by physics (can move and be affected by forces)
• Animated: When enabled, the object can be keyframe animated while still maintaining physics properties
• Shape: This determines the collision boundary shape. For the Mesh shape, Source sets which version of the mesh is used for collisions.
• Show Convex Hull: Eye button next to the shape, shown for the Convex Hull shape. Displays the Convex Hull of the Rigid Body Object.
• Surface Response settings:
  • Friction: Controls how much the object resists sliding against other surfaces
  • Bounciness: Determines how much the object bounces on impact (0 means no bounce)
  • Margin: Sets a small buffer zone around the collision shape to help prevent objects from getting stuck

These settings are part of Blender's rigid body physics system that allows for realistic physical interactions between objects.

You can find more detailed information about these collision settings in the Blender Manual .