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Shapes

Each region of the softbody has one collision shape, on its rigidbody. To see them, turn on Shapes in Debug Draw, which works in the editor and in game:

shapes

The actual hierarchy inside the node is as follows:

  • RigidBody2D: contains
    • CollisionShape2D
    • RemoteTransform2D (moves the bone that deforms the texture)
    • Joint2D nodes, one per neighbour

Shape properties​

The Shape parameters section contains:

  • Radius: the size of the shape. Circles get half of it as their radius, squares get it as their side. It defaults to a little under Vertex Interval, so neighbouring shapes nearly touch.
  • Shape Type: Circle (the default) or Rectangle.
  • Edge Clearance (in the Region section) keeps every shape just inside the texture, like this:

Center Image

Circles or squares?​

Use circles on the hexagon pattern. A square the size of the spacing already overlaps its diagonal neighbours at rest, and once rotated its diagonal reaches its second neighbours, which do collide: 40 to 86 self contacts on a resting softbody against 2 with circles. Squares still suit the rectangle pattern. The editor warns about squares on hexagons.