Physics components

The Physics engine of Unity works by components. Some describe properties of the object itself, others with respect to each other, or some even within a certain region of the game world.

They can be divided as follows:

• Rigidbodies: Which define a rigidbody within the Physics engine

• Colliders: Which define a physical shape for the rigidbodies

• Joints: Which impose one or more constraints on the rigidbodies

• Effectors: Which change the physical property in some region of the game world, influencing all the rigidbodies within that region

A summary diagram of the different components of the 2D Physics engine of Unity

Now, let's see them in more detail.