/**
 * Runtime mouse for updating instance objects
 * @param graphics GameLib.D3.Graphics
 * @param apiMouse GameLib.API.Mouse
 * @constructor
 */
GameLib.Mouse = function (graphics, apiMouse) {

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

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

	if (apiMouse instanceof GameLib.Mouse) {
		return apiMouse;
	}

    GameLib.API.Mouse.call(
        this,
        apiMouse.id,
        apiMouse.name,
        apiMouse.x,
        apiMouse.y,
        apiMouse.parentEntity
    );

    this.instance = this.createInstance();
};

GameLib.Mouse.prototype = Object.create(GameLib.API.Mouse.prototype);
GameLib.Mouse.prototype.constructor = GameLib.Mouse;

/**
 * Creates an instance mouse
 * @param update
 * @returns {*}
 */
GameLib.Mouse.prototype.createInstance = function(update) {

    var instance = null;

    if (update) {
        instance = this.instance;
    }

    return instance;
};

/**
 * Updates the instance vector, calls updateInstance on the parent object
 */
GameLib.Mouse.prototype.updateInstance = function() {
    this.createInstance(true);
};

/**
 * Converts runtime vector to API Vector
 * @returns {GameLib.API.Mouse}
 */
GameLib.Mouse.prototype.toApiMouse = function() {
    return new GameLib.API.Mouse(
        this.id,
        this.name,
        this.x,
        this.y,
        this.parentEntity
    );
};