using System;

using System.IO;

using System.Collections.Generic;



using System.Text;

using Microsoft.Xna.Framework;



namespace TTengine.Util

{

    /**

     * general utility methods that are handy in creating your games

     */

    public class TTUtil

    {

        /// <summary>

        /// Rounds the components of a Vector2 in-place

        /// </summary>

        /// <param name="input">Vector2 to round</param>

        public static void Round(ref Vector2 input)

        {

            input.X = (float)Math.Round(input.X);

            input.Y = (float)Math.Round(input.Y);

        }



        /// <summary>

        /// Count the number of lines in a string

        /// </summary>

        /// <param name="s">The string</param>

        /// <returns>The linecount, or 0 if empty string</returns>

        public static int LineCount(string s)

        {

            if (s.Length == 0)

                return 0;

            int result = 1;

            foreach (char c in s)

            {

                if (c.Equals('\n'))

                {

                    result++;

                }

            }

            return result;

        }



        /// <summary>

        /// Invert color

        /// </summary>

        /// <param name="c">color to invert</param>

        /// <returns>Inverted color, "1-c"</returns>

        public static Color InvertColor(Color c)

        {

            return new Color(new Vector3(1f, 1f, 1f) - c.ToVector3());

        }

    }

}