/*
 * MainMenuScreen.cs
 * Authors: Adam Nabinger
 * Copyright (c) 2007-2008 Cornell University

 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
 as published by the Free Software Foundation; either version 2
 of the License, or (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/

using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using Util;

namespace MaritimeDefender
{
	/// <summary>
	/// Defines how the main menu screen for Maritime Defender works
	/// </summary>
	internal class MainMenuScreen : MenuScreen
	{
		#region Creation

        Logger mLogger;

		/// <summary>
		/// Constructor
		/// </summary>
		public MainMenuScreen() : base(null) { }

		#endregion

		#region Initialization

		/// <summary>
		/// Initializes input handling and sets the project directory
		/// </summary>
		public override void Initialize()
		{
			// throws file not found if script not found...
			Util.Settings.LoadFrom(RootDirectory);
			base.Initialize();

            mLogger = GetLogger();

			// Enter -> Start Game
			inputHandler.BindButton(Keys.Enter, Trigger.Activated, (int)EventCode.MD_MaritimeDefenderGameBegin);

			// T -> Tutorial
			inputHandler.BindButton(Keys.T, Trigger.Activated, (int)EventCode.MD_TutorialStart);

			// Left Mouse Click -> Menu Select
			inputHandler.BindButton(MouseButton.Left, Trigger.Activated, (int)EventCode.MD_MenuSelect);

		}

		/// <summary>
		/// Resets the main menu screen back to the state it was at upon creation
		/// </summary>
		public override void Reinitialize()
		{
			Enabled = true;
			Visible = true;
			inputHandler.Enable();
		}

		#endregion

		#region  Management

		/// <summary>
		/// Loads in any necessary information for all content dependent objects
		/// </summary>
		protected override void LoadContent()
		{
			if (Util.Settings.ApplyGraphicsChanges())
			{
				//return;
			}

			inputHandler.ForceUpdateWindow(WindowBounds);

            SoundManager.SoundManager.UnloadAudioProject();
            SoundManager.SoundManager.LoadAudioProject(Content.RootDirectory, @"AudioProject.xgs");
            SoundManager.SoundManager.PlayMusic("Maritime Defender Theme");

			mBackground = Content.Load<Texture2D>(@"MiniGames\MMMenuBackground");
			mMousePointer = Content.Load<Texture2D>(@"General\StandardCursor");

			int screenWidth = GraphicsDevice.Viewport.Width;
			int screenHeight = GraphicsDevice.Viewport.Height;

			mBackgroundLocation = new Rectangle(0, 0, screenWidth, screenHeight);
			mMouseLocation = new Rectangle(0, 0, mMousePointer.Width, mMousePointer.Height);

			int buttonWidth = (int)(screenWidth * 0.22f);
			int buttonHeight = (int)(screenHeight * 0.09f);

			mButtons = new MenuButton[3];

			mButtons[0] = new MenuButton(@"MiniGames\MMStartButton", new Rectangle((int)(screenWidth * .01f), (int)(screenHeight * .89f), buttonWidth, buttonHeight), delegate { MaritimeDefender MM = new MaritimeDefender(); Raise(MM); MM.StartGame(); });
			mButtons[1] = new MenuButton(@"MiniGames\MMTutorialButton", new Rectangle((int)(screenWidth * .25f), (int)(screenHeight * .89f), buttonWidth, buttonHeight), delegate { MaritimeDefender MM = new MaritimeDefender(); Raise(MM); MM.StartTutorial(); });
			mButtons[2] = new MenuButton(@"MiniGames\MMBackButton", new Rectangle((int)(screenWidth * .49f), (int)(screenHeight * .89f), buttonWidth, buttonHeight), delegate { Done(); });

			base.LoadContent();
		}

        /// <summary>
        /// UnloadContent will be called once per game and is the place to unload
        /// all content.
        /// </summary>
        protected override void UnloadContent()
        {
            SoundManager.SoundManager.UnloadAudioProject();
		}

		#endregion

		#region Update

		/// <summary>
		/// Updates the main menu screen
		/// </summary>
		/// <param name="gameTime">Time passed in game</param>
		public override void Update(GameTime gameTime)
		{
			Point tempLocation = inputHandler.MouseLocation;
			mMouseLocation.X = tempLocation.X;
			mMouseLocation.Y = tempLocation.Y;
			while (inputHandler.HasEvent())
			{
				InputEvent e = inputHandler.GetNextEvent();
				switch (e.EventCode)
				{
					case (int)EventCode.MD_MenuSelect:

						foreach (MenuButton b in mButtons)
						{
                            e.WriteToLog(mLogger, "MD_MENU_INPUT_Left_Click X=" + tempLocation.X + " Y=" + tempLocation.Y);
							if (b.Location.Contains((e as MouseInputEvent).Location))
							{
								Enabled = false;
								Visible = false;
								inputHandler.Disable();
								b.Execute(m_Game);
								return;
							}
						}
						break;
					case (int)EventCode.MD_MenuCancel:
                        e.WriteToLog(mLogger, "MD_MENU_INPUT_exit");
						Done();
						return;
					case (int)EventCode.MD_MaritimeDefenderGameBegin:
                        e.WriteToLog(mLogger, "MD_MENU_INPUT_Begin");
						Enabled = false;
						Visible = false;
						inputHandler.Disable();
						mButtons[0].Execute(m_Game);
						return;
					case (int)EventCode.MD_TutorialStart:
                        e.WriteToLog(mLogger, "MD_MENU_INPUT_TutorialStart");
						Enabled = false;
						Visible = false;
						inputHandler.Disable();
						mButtons[1].Execute(m_Game);
						return;
				}
			}
			base.Update(gameTime);
		}

		#endregion
	}
}