collision_example.ts

  
import { Mesh, PhysicsImpostor } from "@babylonjs/core";
export default class BlockComponent extends Mesh {
// ...
    /**
     * Called on the node is being initialized.
     * This function is called immediatly after the constructor has been called.
     */
    public onInitialize(): void {
        this.physicsImpostor = new PhysicsImpostor(this, PhysicsImpostor.BoxImpostor, { mass: 0, friction: 0, restitution: 1 });
        this.physicsImpostor.forceUpdate();
    }

    /**
     * Called on the scene starts.
     */
    public onStart(): void {
        // Register event to know when the block collides with the ball.
        let onPhysicsCollideFunc: () => void;
        this.physicsImpostor.registerOnPhysicsCollide(this._ball.physicsImpostor, onPhysicsCollideFunc = () => {
            this.physicsImpostor.unregisterOnPhysicsCollide(this._ball.physicsImpostor, onPhysicsCollideFunc);
            this.physicsImpostor.dispose();

            this.setEnabled(false);
        });
    }
//...
}