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Soft physics

about this guide

This guide will explain how to use the different soft physics features to create ropes etc..

Basic concept​

To create soft bodies of any kind there are currently two main components that are used to link multiple entities together:

  • SoftLinkComponent will link the containing entity with another. The target is specified by id within the component. The component is used by other components to create an outline for soft bodies.
  • SoftStructureComponent will basically do the same but with multiple targets. The component is used to create structural integrity when creating a soft body from multiple entities.

Ropes​

rope.png

To create a rope you can create a chain of entities each linking to the next one using the SoftLinkComponent. To render the rope add a RopeComponent and a RopeRenderComponent to the first entity within the chain. The RopeComponent will build a comfortable list of entities contained within the rope. The RopeRenderComponent will actually render a smoothed line between the entities from the node list within the RopeComponent.

Soft Bodies​

bodies.png

Creating soft bodies is similar to creating ropes. Start by creating a loop of entities each linking to the next one using the SoftLinkComponent. In contrast to building a rope the last element of the chain must link back to the first element. To maintain the form of the shape you have created, add a SoftStructureComponent to some of the nodes and link them to other ones. The SoftBodyComponent will build a comfortable list of entities contained within the outline of the body. The SoftBodyRenderComponent will actually render a polygon created by the the entities from the node list within the SoftBodyComponent.

note

Future versions will introduce apis for a more comfortable creation of ropes and soft bodies.

note

Future versions may introduce some kind of collision detection between soft bodies.