destruction_listener.dart

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 * Copyright (c) 2015, Daniel Murphy, Google
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part of box2d;

/**
 * Joints and fixtures are destroyed when their associated
 * body is destroyed. Implement this listener so that you
 * may nullify references to these joints and shapes.
 */
abstract class DestructionListener {

  /**
   * Called when any joint is about to be destroyed due
   * to the destruction of one of its attached bodies.
   * @param joint
   */
  void sayGoodbyeJoint(Joint joint);

  /**
   * Called when any fixture is about to be destroyed due
   * to the destruction of its parent body.
   * @param fixture
   */
  void sayGoodbyeFixture(Fixture fixture);
}