C:/Users/Andreas Schiffler/Desktop/SVN/NewGamePhysics/PendulumGame/Screens/PendulumMainMenuScreen.cs

#region File Description
//-----------------------------------------------------------------------------
// PendulumMainMenuScreen.cs
//-----------------------------------------------------------------------------
#endregion

namespace PendulumGame
{
    using System;
    using Microsoft.Xna.Framework;
    using NewGamePhysics.StateManager;

    class PendulumMainMenuScreen : MenuScreen
    {
        #region Initialization

        public PendulumMainMenuScreen()
            : base("Main Menu")
        {
            TransitionOnTime = TimeSpan.FromSeconds(1.0);
            TransitionOffTime = TimeSpan.FromSeconds(1.0);

            // Create our menu entries.
            MenuEntry playGameMenuEntry = new MenuEntry("Start Game");
            MenuEntry helpMenuEntry = new MenuEntry("Game Controls Help");
            MenuEntry infoMenuEntry = new MenuEntry("Game Information");
            MenuEntry videoMenuEntry = new MenuEntry("View Pendulum Video");
            MenuEntry exitMenuEntry = new MenuEntry("Exit Game");

            // Hook up menu event handlers.
            playGameMenuEntry.Selected += PlayGameMenuEntrySelected;
            helpMenuEntry.Selected += HelpMenuEntrySelected;
            infoMenuEntry.Selected += InfoMenuEntrySelected;
            videoMenuEntry.Selected += VideoMenuEntrySelected;
            exitMenuEntry.Selected += OnCancel;

            // Add entries to the menu.
            MenuEntries.Add(playGameMenuEntry);
            MenuEntries.Add(helpMenuEntry);
            MenuEntries.Add(infoMenuEntry);
            MenuEntries.Add(videoMenuEntry);
            MenuEntries.Add(exitMenuEntry);
        }

        #endregion

        #region Handle Input

        void PlayGameMenuEntrySelected(object sender, PlayerIndexEventArgs e)
        {
            ScreenManager.AddScreen(new PendulumOptionsMenuScreen(), null);
        }

        protected override void OnCancel(PlayerIndex playerIndex)
        {
            const string message = "Are you sure you want to exit the program?";

            PendulumMessageBoxScreen confirmExitMessageBox = new PendulumMessageBoxScreen(message);

            confirmExitMessageBox.Accepted += ConfirmExitMessageBoxAccepted;

            ScreenManager.AddScreen(confirmExitMessageBox, playerIndex);
        }

        void ConfirmExitMessageBoxAccepted(object sender, PlayerIndexEventArgs e)
        {
            ScreenManager.Game.Exit();
        }

        void InfoMenuEntrySelected(object sender, PlayerIndexEventArgs e)
        {
            // Text to display
            string[] messages = { 
            "Information on The Pendulum Game", 
            "",
            "The Pendulum Game is a simple dynamics simulation of double",
            "regular + square pendulums (hence the name). The goal is to",
            "touch the 'targets' at the top of the screen for points.",
            "",
            "A player needs to control the friction actuators in the hinges of",
            "the pendulums to inject energy into the system and make the",            
            "pendulum arms swing high enough to reach the 'targets'.",
            "",
            "Options include various gravity environments and friction models.",
            "",
            "The oscillatory systems together with the player interactions ",
            "are used to extract physical entropy (randomness) during gameplay.",
            };

            ScreenManager.AddScreen(new PendulumHelpScreen(messages), null);            

            // Reset back to play entry
            this.SelectedEntry = 0;

            // Set flag to update text when we return
            WaitForUncover = true;
        }

        void HelpMenuEntrySelected(object sender, PlayerIndexEventArgs e)
        {
            // Text to display
            string[] messages = { 
            "Controls for The Pendulum Game", 
            "",
            "--- Player A ---",
            "   [Q]/[A] or (A)/(B)- select actuator hinge",
            "   [Z]/[X] or [Left Stick] - inject energy at hinge",
            "   [Left Shift] or [Left Trigger] - switch data display",
            "--- Player B ---",
            "   [Up]/[Down] or (X)/(Y) - select actuator hinge",
            "   [Left]/[Right] or [Right Stick] - inject energy at hinge",
            "   [Right Shift] or [Right Trigger] - switch data display",
            " [Space] or (A)",
            "    continue in menu, game or help screens",
            " [Escape] or (Back)",
            "    pause game or quit to main menu",
            };

            ScreenManager.AddScreen(new PendulumHelpScreen(messages), null);

            // Reset back to play entry
            this.SelectedEntry = 0;

            // Set flag to update text when we return
            WaitForUncover = true;
        }

        void VideoMenuEntrySelected(object sender, PlayerIndexEventArgs e)
        {

            PendulumLoadingScreen.Load(
                ScreenManager, true, e.PlayerIndex,
                new PendulumVideoScreen());
        }
        #endregion
    }
}

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