Class TCollider

Default for Density.

Default for Mass, zero means "use Density instead".

Default for Restitution.

Default for Friction.

Create a collider, and set the parent rigid body. The collider instance is owned by the TRigidBody instance, so will be freed when the TRigidBody is freed. This automatically sets the TCastleRigidBody.Collider property and TCollider.Parent property.

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Parent rigid body, which in turn refers to this collider by TCastleRigidBody.Collider.

Density (per volume) in kg, this implicitly determines mass (volume is automatically calculated by the physics engine). If you instead prefer to explicitly set mass, set Mass property to something non-zero.

Mass in kg. When non-zero, this overrides the automatically calculated mass from the volume and Density.

How elastic are collisions with this body, that is how much collider "bounces off" this body.

It generally ranges from 0 (perfectly non-elastic) to 1 (perfectly elastic). It is almost always less than 1, since the initial kinetic energy gets lost at collision. See https://en.wikipedia.org/wiki/Coefficient_of_restitution for more discussion.

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