designception

package net.dermetfan.utils.libgdx.box2d;

import com.badlogic.gdx.physics.box2d.Body;
import com.badlogic.gdx.physics.box2d.Joint;
import com.badlogic.gdx.utils.Array;

public class Rope2 {

    public static class Segment {

        public final Body body;
        public final Array<Connection> connections = new Array<Connection>(2);

        public Segment(Body body) {
            this.body = body;
        }

        public Segment(Body body, Connection... connections) {
            this(body);
            this.connections.addAll(connections);
        }

    }

    /** abstracts a {@link Joint} with child joints
     *  @author dermetfan */
    public static abstract class Connection {

        public static interface Builder {
            public Connection createConnection(Body bodyA, Body bodyB);
        }

        public final Array<Connection> children = new Array<Connection>(0);

        public Connection() {
        }

        public Connection(Body bodyA, Body bodyB) {
            connect(bodyA, bodyB);
        }

        public abstract void connect(Body bodyA, Body bodyB);

        public abstract void destroy();

    }

    public static abstract class SingleConnection extends Connection {
        protected Joint joint;
    }

    public static abstract class DoubleConnection extends Connection {
        protected Joint joint1, joint2;
    }

    public static abstract class TripleConnection extends Connection {
        protected Joint joint1, joint2, joint3;
    }

    public static abstract class MultipleConnection extends Connection {
        protected final Array<Joint> joints = new Array<Joint>(4);
    }

    public static abstract class Builder {
        private Connection.Builder connectionBuilder;

        public abstract Segment createSegment();

        public abstract Connection connect();
    }

    public static void main(String[] args) {
        Connection.Builder connectionBuilder = new Connection.Builder() {

            @Override
            public Connection createConnection(Body bodyA, Body bodyB) {
                return null;
            }

        };

        Rope2.Builder ropeBuilder = new Rope2.Builder() {

            @Override
            public Segment createSegment() {
                return null;
            }

            @Override
            public Connection connect() {
                return null;
            }

        };
    }

}