/**
 * Creates a Clock object
 * @param graphics
 * @param apiClock GameLib.API.Clock
 * @constructor
 */
GameLib.Clock = function(
    graphics,
    apiClock
) {

    this.graphics = graphics;
    this.graphics.isNotThreeThrow();

    if (GameLib.Utils.UndefinedOrNull(apiClock)) {
        apiClock = {};
    }

    GameLib.API.Clock.call(
        this,
        apiClock.id,
        apiClock.name,
        apiClock.parentEntity
    );

    GameLib.Component.call(this);
} ;

GameLib.Clock.prototype = Object.create(GameLib.Component.prototype);
GameLib.Clock.prototype.constructor = GameLib.Clock;

/**
 * Creates a camera instance of 'graphics' type (only THREE for now)
 * @returns {THREE.Clock}
 */
GameLib.Clock.prototype.createInstance = function() {

    this.instance = new THREE.Clock();

    GameLib.Component.prototype.createInstance.call(this);
};

/**
 * Updates the instance with the current state
 */
GameLib.Clock.prototype.updateInstance = function() {

};

GameLib.Clock.prototype.getDelta = function() {

    var delta = this.instance.getDelta();

    /**
     * clamp the delta to 1/60
     */

    if (delta > (1 / 30.0)) {
        // console.log('clipped ' + (delta - (1/30.0)) + ' seconds - essentially lost time');
        delta = (1 / 30.0);
    }

    return delta;
};

/**
 * Converts a GameLib.Clock to a new GameLib.API.Clock
 * @returns {GameLib.API.Clock}
 */
GameLib.Clock.prototype.toApiObject = function() {

    return new GameLib.API.Clock(
        this.id,
        this.name,
        GameLib.Utils.IdOrNull(this.parentEntity)
    );

};

/**
 * Converts from an Object camera to a GameLib.Clock
 * @param graphics GameLib.Graphics
 * @param objectClock Object
 * @returns {GameLib.Clock}
 * @constructor
 */
GameLib.Clock.FromObject = function(graphics, objectClock) {

    var apiClock = GameLib.API.Clock.FromObject(objectClock);

    return new GameLib.Clock(
        graphics,
        apiClock
    );

};