using Microsoft.Xna.Framework.Graphics;

/**
 * A sprite that shows the value of an eaten peanut.
 *
 * @author Jim Glenn
 * @version 0.2 2/10/2009 translated to C# (still needs XML comments)
 * @version 0.1 1/21/2009
 */
namespace WindowsGame1
{
    public class ValueDisplay : Sprite
    {
        /**
         * The value displayed.
         */

        private int value;

        /**
         * The default size of a display.
         */

        public const double DefaultSize = 0.03;

        /**
         * The default vertical speed of a display.
         */

        public const double DefaultSpeed = -0.03;

        /**
         * The default amount of time a display will exist.
         */

        public const double DefaultTime = 1.5;

        /**
         * Creates a new sprite that displays the given value.
         *
         * @param v the value to display
         */

        public ValueDisplay(double initX, double initY, int v)
            : base(initX, initY, DefaultSize, 0.0, DefaultSpeed, Color.Black)
        {
            value = v;
        }

        /**
         * Returns the value in this display.
         *
         * @return the displayed value
         */

        public int GetValue()
        {
            return value;
        }

        /**
         * Returns the current color of this display.
         *
         * @return the color of this display.
         */

        public override Color GetColor()
        {
            return new Color((byte)(GetStateTime() / DefaultTime * 255),
                            (byte)(GetStateTime() / DefaultTime * 255),
                            (byte)(GetStateTime() / DefaultTime * 255));
        }

        /**
         * Updates this sprite's position and checks for its expiration.
         *
         * @param t the time since the last update, in seconds
         * @param w the world this sprite belongs to
         */

        public override void Update(double t, GameModel m)
        {
            base.Update(t, m);

            // check for expiration

            if (GetStateTime() > DefaultTime)
            {
                m.RemoveSprite(this);
            }
        }
    }
}