;d like to understand Godot&rsquo;s <code>Joint2D</code> nodes.</p><h2 id=solution>Solution</h2><p>Joint are used to constrain the movement of attached physics objects. For any joint node, you need to attach two bodies, which must extend from <code>PhysicsObject2D</code>.</p><h4 id=properties>Properties</h4><p>These properties are common to all joint nodes:</p><ul><li><em>Node A</em> and <em>Node B</em>: The assigned physics bodies.</li><li><em>Bias</em>: The rate at which the joint pulls the two bodies bac