Phaser Source: src/physics/p2/LockConstraint.js

# Source: src/physics/p2/LockConstraint.js

    /**
    * @author       Richard Davey <rich@photonstorm.com>
    * @copyright    2016 Photon Storm Ltd.
    * @license      {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
    */

    /**
    * Locks the relative position between two bodies.
    *
    * @class Phaser.Physics.P2.LockConstraint
    * @constructor
    * @param {Phaser.Physics.P2} world - A reference to the P2 World.
    * @param {p2.Body} bodyA - First connected body.
    * @param {p2.Body} bodyB - Second connected body.
    * @param {Array} [offset] - The offset of bodyB in bodyA's frame. The value is an array with 2 elements matching x and y, i.e: [32, 32].
    * @param {number} [angle=0] - The angle of bodyB in bodyA's frame.
    * @param {number} [maxForce] - The maximum force that should be applied to constrain the bodies.
    */
    Phaser.Physics.P2.LockConstraint = function (world, bodyA, bodyB, offset, angle, maxForce) {

        if (offset === undefined) { offset = [0, 0]; }
        if (angle === undefined) { angle = 0; }
        if (maxForce === undefined) { maxForce = Number.MAX_VALUE; }

        /**
        * @property {Phaser.Game} game - Local reference to game.
        */
        this.game = world.game;

        /**
        * @property {Phaser.Physics.P2} world - Local reference to P2 World.
        */
        this.world = world;

        offset = [ world.pxm(offset[0]), world.pxm(offset[1]) ];

        var options = { localOffsetB: offset, localAngleB: angle, maxForce: maxForce };

        p2.LockConstraint.call(this, bodyA, bodyB, options);

    };

    Phaser.Physics.P2.LockConstraint.prototype = Object.create(p2.LockConstraint.prototype);
    Phaser.Physics.P2.LockConstraint.prototype.constructor = Phaser.Physics.P2.LockConstraint;