using System;
using System.Collections.Generic;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Audio;
using Microsoft.Xna.Framework.Content;
using Microsoft.Xna.Framework.GamerServices;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using Microsoft.Xna.Framework.Net;
using Microsoft.Xna.Framework.Storage;
using TestProject.Systems;
using TestProject.Utilities;

namespace TestProject.Utilities
{
    /// <summary>
    /// Input helper is a helper class designed to get the current
    /// key being pressed by the user, and set a bool value associated
    /// with that key to True if the key is pressed, and False if the key
    /// is not being pressed.
    /// 
    /// Craig Giles
    /// Feb.2008
    /// </summary>
    class InputHelper
    {
        static public KeyboardState curKeyboardState, prevKeyboardState;

        /// <summary>
        /// public Bool values to indicate weather or not a specific 
        /// key is being pressed
        /// </summary>
        static public bool Enter = false;  

        static public bool Up = false;
        static public bool Down = false;
        static public bool Left = false;
        static public bool Right = false;

        /// <summary>
        /// Gets the keys being pressed by the player and sets the
        /// appropriate bool value for that key to "true" if pressed
        /// and "false" if not.
        /// </summary>
        /// <param name="player">Player object</param>
        static public void GetPlayerInput(Player player)
        {
            curKeyboardState = Keyboard.GetState();

            if (curKeyboardState.IsKeyDown(Keys.Down))
            { Down = true; }
            else
            { Down = false; }

            if (curKeyboardState.IsKeyDown(Keys.Up))
            { Up = true; }
            else
            { Up = false; }

            if (curKeyboardState.IsKeyDown(Keys.Left))
            { Left = true; }
            else
            { Left = false; }

            if (curKeyboardState.IsKeyDown(Keys.Right))
            { Right = true; }
            else 
            { Right = false; }

            //Ensure the player can only move one direction at a time, Up, Down, Left, or Right.
            if (curKeyboardState.IsKeyDown(Keys.Down) && curKeyboardState.IsKeyDown(Keys.Right))
            { Down = true; Right = false; }
            if (curKeyboardState.IsKeyDown(Keys.Down) && curKeyboardState.IsKeyDown(Keys.Left))
            { Down = true; Left = false; }
            if (curKeyboardState.IsKeyDown(Keys.Up) && curKeyboardState.IsKeyDown(Keys.Right))
            { Up = true; Right = false; }
            if (curKeyboardState.IsKeyDown(Keys.Up) && curKeyboardState.IsKeyDown(Keys.Left))
            { Up = true; Left = false; }

            if (curKeyboardState.IsKeyDown(Keys.Enter))
            { Enter = true; }
            else
            { Enter = false; }

            prevKeyboardState = curKeyboardState;
        }//end GetPlayerInput

    }//end class
}//end namespace