| #region File Description␍␊ |
| //-----------------------------------------------------------------------------␍␊ |
| // MenuScreen.cs␍␊ |
| //␍␊ |
| // XNA Community Game Platform␍␊ |
| // Copyright (C) Microsoft Corporation. All rights reserved.␍␊ |
| //-----------------------------------------------------------------------------␍␊ |
| #endregion␍␊ |
| ␍␊ |
| #region Using Statements␍␊ |
| using System;␍␊ |
| using System.Collections.Generic;␍␊ |
| using Microsoft.Xna.Framework;␍␊ |
| using Microsoft.Xna.Framework.Graphics;␍␊ |
| using Microsoft.Xna.Framework.Input.Touch;␍␊ |
| using Microsoft.Xna.Framework.Input;␍␊ |
| using FarseerPhysics.SamplesFramework;␍␊ |
| #endregion␍␊ |
| ␍␊ |
| namespace FarseerPhysics.SamplesFramework␍␊ |
| namespace GameStateManagement␍␊ |
| {␍␊ |
| /// <summary>␍␊ |
| /// Base class for screens that contain a menu of options. The user can␍␊ |
| /// move up and down to select an entry, or cancel to back out of the screen.␍␊ |
| /// </summary>␍␊ |
| public class MenuScreen : GameScreen␍␊ |
| abstract class MenuScreen : GameScreen␍␊ |
| {␍␊ |
| #if WINDOWS || XBOX␍␊ |
| protected const float NumEntries = 15;␍␊ |
| #elif WINDOWS_PHONE␍␊ |
| protected const float NumEntries = 9;␍␊ |
| #endif␍␊ |
| protected List<MenuEntry> _menuEntries = new List<MenuEntry>();␍␊ |
| protected string _menuTitle;␍␊ |
| protected Vector2 _titlePosition;␍␊ |
| protected Vector2 _titleOrigin;␍␊ |
| protected int _selectedEntry;␍␊ |
| protected float _menuBorderTop;␍␊ |
| protected float _menuBorderBottom;␍␊ |
| protected float _menuBorderMargin;␍␊ |
| protected float _menuOffset;␍␊ |
| protected float _maxOffset;␍␊ |
| #region Fields␍␊ |
| ␍␊ |
| protected Texture2D _texScrollButton;␍␊ |
| protected Texture2D _texSlider;␍␊ |
| List<MenuEntry> menuEntries = new List<MenuEntry>();␍␊ |
| int selectedEntry = 0;␍␊ |
| string menuTitle;␍␊ |
| ␍␊ |
| protected MenuButton _scrollUp;␍␊ |
| protected MenuButton _scrollDown;␍␊ |
| protected MenuButton _scrollSlider;␍␊ |
| protected bool _scrollLock;␍␊ |
| InputAction menuUp;␍␊ |
| InputAction menuDown;␍␊ |
| InputAction menuSelect;␍␊ |
| InputAction menuCancel;␍␊ |
| ␍␊ |
| #endregion␍␊ |
| ␍␊ |
| #region Properties␍␊ |
| ␍␊ |
| ␍␊ |
| /// <summary>␍␊ |
| /// Gets the list of menu entries, so derived classes can add␍␊ |
| /// or change the menu contents.␍␊ |
| /// </summary>␍␊ |
| protected IList<MenuEntry> MenuEntries␍␊ |
| {␍␊ |
| get { return menuEntries; }␍␊ |
| }␍␊ |
| ␍␊ |
| ␍␊ |
| #endregion␍␊ |
| ␍␊ |
| #region Initialization␍␊ |
| ␍␊ |
| ␍␊ |
| /// <summary>␍␊ |
| /// Constructor.␍␊ |
| /// </summary>␍␊ |
| public MenuScreen(string menuTitle)␍␊ |
| {␍␊ |
| _menuTitle = menuTitle;␍␊ |
| this.menuTitle = menuTitle;␍␊ |
| ␍␊ |
| TransitionOnTime = TimeSpan.FromSeconds(0.7);␍␊ |
| TransitionOffTime = TimeSpan.FromSeconds(0.7);␍␊ |
| HasCursor = true;␍␊ |
| TransitionOnTime = TimeSpan.FromSeconds(0.5);␍␊ |
| TransitionOffTime = TimeSpan.FromSeconds(0.5);␍␊ |
| ␍␊ |
| menuUp = new InputAction(␍␊ |
| new Buttons[] { Buttons.DPadUp, Buttons.LeftThumbstickUp }, ␍␊ |
| new Keys[] { Keys.Up },␍␊ |
| true);␍␊ |
| menuDown = new InputAction(␍␊ |
| new Buttons[] { Buttons.DPadDown, Buttons.LeftThumbstickDown },␍␊ |
| new Keys[] { Keys.Down },␍␊ |
| true);␍␊ |
| menuSelect = new InputAction(␍␊ |
| new Buttons[] { Buttons.A, Buttons.Start },␍␊ |
| new Keys[] { Keys.Enter, Keys.Space },␍␊ |
| true);␍␊ |
| menuCancel = new InputAction(␍␊ |
| new Buttons[] { Buttons.B, Buttons.Back },␍␊ |
| new Keys[] { Keys.Escape },␍␊ |
| true);␍␊ |
| }␍␊ |
| ␍␊ |
| public void AddMenuItem(string name, EntryType type, GameScreen screen)␍␊ |
| {␍␊ |
| MenuEntry entry = new MenuEntry(this, name, type, screen);␍␊ |
| _menuEntries.Add(entry);␍␊ |
| }␍␊ |
| ␍␊ |
| public void AddMenuItem(MenuEntry me)␍␊ |
| {␍␊ |
| _menuEntries.Add(me);␍␊ |
| }␍␊ |
| #endregion␍␊ |
| ␍␊ |
| public override void LoadContent()␍␊ |
| {␍␊ |
| base.LoadContent();␍␊ |
| ␍␊ |
| _texScrollButton = ScreenManager.Content.Load<Texture2D>("Common/arrow");␍␊ |
| _texSlider = ScreenManager.Content.Load<Texture2D>("Common/slider");␍␊ |
| #region Handle Input␍␊ |
| ␍␊ |
| //Viewport viewport = ScreenManager.GraphicsDevice.Viewport;␍␊ |
| //float scrollBarPos = viewport.Width / 2f;␍␊ |
| //scrollBarPos -= _texScrollButton.Width + 2f;␍␊ |
| ␍␊ |
| ␍␊ |
| ␍␊ |
| InitMenu();␍␊ |
| ␍␊ |
| ␍␊ |
| ␍␊ |
| }␍␊ |
| ␍␊ |
| public void InitMenu()␍␊ |
| {␍␊ |
| Viewport viewport = ScreenManager.GraphicsDevice.Viewport;␍␊ |
| SpriteFont font = ScreenManager.Fonts.MenuSpriteFont;␍␊ |
| float scrollBarPos = viewport.Width / 2f;␍␊ |
| ␍␊ |
| for (int i = 0; i < _menuEntries.Count; ++i)␍␊ |
| {␍␊ |
| _menuEntries[i].Initialize();␍␊ |
| scrollBarPos = Math.Min(scrollBarPos,␍␊ |
| (viewport.Width - _menuEntries[i].GetWidth()) / 2f);␍␊ |
| }␍␊ |
| ␍␊ |
| _titleOrigin = font.MeasureString(_menuTitle) / 2f;␍␊ |
| _titlePosition = new Vector2(viewport.Width / 2f, font.MeasureString("M").Y / 2f + 10f);␍␊ |
| ␍␊ |
| _menuBorderMargin = font.MeasureString("M").Y * 0.8f;␍␊ |
| _menuBorderTop = (viewport.Height - _menuBorderMargin * (NumEntries - 1)) / 2f;␍␊ |
| _menuBorderBottom = (viewport.Height + _menuBorderMargin * (NumEntries - 1)) / 2f;␍␊ |
| ␍␊ |
| _menuOffset = 0f;␍␊ |
| _maxOffset = Math.Max(0f, (_menuEntries.Count - NumEntries) * _menuBorderMargin);␍␊ |
| ␍␊ |
| _scrollUp = new MenuButton(_texScrollButton, false,␍␊ |
| new Vector2(scrollBarPos, _menuBorderTop - _texScrollButton.Height), this);␍␊ |
| _scrollDown = new MenuButton(_texScrollButton, true,␍␊ |
| new Vector2(scrollBarPos, _menuBorderBottom + _texScrollButton.Height), this);␍␊ |
| _scrollSlider = new MenuButton(_texSlider, false, new Vector2(scrollBarPos, _menuBorderTop), this);␍␊ |
| ␍␊ |
| _scrollLock = false;␍␊ |
| }␍␊ |
| ␍␊ |
| /// <summary>␍␊ |
| /// Returns the index of the menu entry at the position of the given mouse state.␍␊ |
| /// </summary>␍␊ |
| /// <returns>Index of menu entry if valid, -1 otherwise</returns>␍␊ |
| private int GetMenuEntryAt(Vector2 position)␍␊ |
| {␍␊ |
| if (this.TransitionPosition == 0f && this.ScreenState == SamplesFramework.ScreenState.Active)␍␊ |
| {␍␊ |
| int index = 0;␍␊ |
| foreach (MenuEntry entry in _menuEntries)␍␊ |
| {␍␊ |
| float width = entry.GetWidth();␍␊ |
| float height = entry.GetHeight();␍␊ |
| Rectangle rect = new Rectangle((int)(entry.Position.X - width / 2f),␍␊ |
| (int)(entry.Position.Y - height / 2f),␍␊ |
| (int)width, (int)height);␍␊ |
| if (rect.Contains((int)position.X, (int)position.Y) && entry.Alpha > 0.1f)␍␊ |
| {␍␊ |
| return index;␍␊ |
| }␍␊ |
| ++index;␍␊ |
| }␍␊ |
| }␍␊ |
| return -1;␍␊ |
| }␍␊ |
| ␍␊ |
| /// <summary>␍␊ |
| /// Responds to user input, changing the selected entry and accepting␍␊ |
| /// or cancelling the menu.␍␊ |
| /// </summary>␍␊ |
| public override void HandleInput(InputHelper input, GameTime gameTime)␍␊ |
| public override void HandleInput(GameTime gameTime, InputState input)␍␊ |
| {␍␊ |
| // Mouse or touch on a menu item␍␊ |
| int hoverIndex = GetMenuEntryAt(input.Cursor);␍␊ |
| if (hoverIndex > -1 && _menuEntries[hoverIndex].IsSelectable() && !_scrollLock)␍␊ |
| // For input tests we pass in our ControllingPlayer, which may␍␊ |
| // either be null (to accept input from any player) or a specific index.␍␊ |
| // If we pass a null controlling player, the InputState helper returns to␍␊ |
| // us which player actually provided the input. We pass that through to␍␊ |
| // OnSelectEntry and OnCancel, so they can tell which player triggered them.␍␊ |
| PlayerIndex playerIndex;␍␊ |
| ␍␊ |
| // Move to the previous menu entry?␍␊ |
| if (menuUp.Evaluate(input, ControllingPlayer, out playerIndex))␍␊ |
| {␍␊ |
| _selectedEntry = hoverIndex;␍␊ |
| }␍␊ |
| else␍␊ |
| {␍␊ |
| _selectedEntry = -1;␍␊ |
| selectedEntry--;␍␊ |
| ␍␊ |
| if (selectedEntry < 0)␍␊ |
| selectedEntry = menuEntries.Count - 1;␍␊ |
| }␍␊ |
| ␍␊ |
| _scrollSlider.Hover = false;␍␊ |
| if (input.IsCursorValid)␍␊ |
| // Move to the next menu entry?␍␊ |
| if (menuDown.Evaluate(input, ControllingPlayer, out playerIndex))␍␊ |
| {␍␊ |
| _scrollUp.Collide(input.Cursor);␍␊ |
| _scrollDown.Collide(input.Cursor);␍␊ |
| _scrollSlider.Collide(input.Cursor);␍␊ |
| }␍␊ |
| else␍␊ |
| {␍␊ |
| _scrollUp.Hover = false;␍␊ |
| _scrollDown.Hover = false;␍␊ |
| _scrollLock = false;␍␊ |
| selectedEntry++;␍␊ |
| ␍␊ |
| if (selectedEntry >= menuEntries.Count)␍␊ |
| selectedEntry = 0;␍␊ |
| }␍␊ |
| ␍␊ |
| // Accept or cancel the menu? ␍␊ |
| if (input.IsMenuSelect() && _selectedEntry != -1)␍␊ |
| if (menuSelect.Evaluate(input, ControllingPlayer, out playerIndex))␍␊ |
| {␍␊ |
| if (_menuEntries[_selectedEntry].IsExitItem())␍␊ |
| {␍␊ |
| ScreenManager.Game.Exit();␍␊ |
| } ␍␊ |
| else if (_menuEntries[_selectedEntry].IsBackItem())␍␊ |
| {␍␊ |
| this.ExitScreen();␍␊ |
| }␍␊ |
| else if (_menuEntries[_selectedEntry].Screen != null)␍␊ |
| {␍␊ |
| ScreenManager.AddScreen(_menuEntries[_selectedEntry].Screen);␍␊ |
| if (_menuEntries[_selectedEntry].Screen is IDemoScreen)␍␊ |
| {␍␊ |
| ScreenManager.AddScreen(␍␊ |
| new MessageBoxScreen((_menuEntries[_selectedEntry].Screen as IDemoScreen).GetDetails()));␍␊ |
| }␍␊ |
| }␍␊ |
| OnSelectEntry(selectedEntry, playerIndex);␍␊ |
| }␍␊ |
| else if (input.IsMenuCancel())␍␊ |
| else if (menuCancel.Evaluate(input, ControllingPlayer, out playerIndex))␍␊ |
| {␍␊ |
| if (this.ScreenState == SamplesFramework.ScreenState.Active && this.TransitionPosition == 0 && this.TransitionAlpha == 1)␍␊ |
| {␍␊ |
| //GameScreen[] screens = ScreenManager.GetScreens();␍␊ |
| //if (screens[screens.Length - 1] is BackgroundScreen ||| screens.Length )␍␊ |
| // ScreenManager.Game.Exit();␍␊ |
| //if (ScreenManager.GetScreens().Length == 2)␍␊ |
| // ScreenManager.Game.Exit();␍␊ |
| //else␍␊ |
| this.ExitScreen();␍␊ |
| }␍␊ |
| //ScreenManager.Game.Exit();␍␊ |
| }␍␊ |
| ␍␊ |
| if (input.IsMenuPressed())␍␊ |
| {␍␊ |
| if (_scrollUp.Hover)␍␊ |
| {␍␊ |
| _menuOffset = Math.Max(_menuOffset - 200f * (float)gameTime.ElapsedGameTime.TotalSeconds, 0f);␍␊ |
| _scrollLock = false;␍␊ |
| }␍␊ |
| if (_scrollDown.Hover)␍␊ |
| {␍␊ |
| _menuOffset = Math.Min(_menuOffset + 200f * (float)gameTime.ElapsedGameTime.TotalSeconds, _maxOffset);␍␊ |
| _scrollLock = false;␍␊ |
| }␍␊ |
| if (_scrollSlider.Hover)␍␊ |
| {␍␊ |
| _scrollLock = true;␍␊ |
| }␍␊ |
| }␍␊ |
| if (input.IsMenuReleased())␍␊ |
| {␍␊ |
| _scrollLock = false;␍␊ |
| }␍␊ |
| if (_scrollLock)␍␊ |
| {␍␊ |
| _scrollSlider.Hover = true;␍␊ |
| _menuOffset = Math.Max(Math.Min(((input.Cursor.Y - _menuBorderTop) / (_menuBorderBottom - _menuBorderTop)) * _maxOffset, _maxOffset), 0f);␍␊ |
| OnCancel(playerIndex);␍␊ |
| }␍␊ |
| }␍␊ |
| ␍␊ |
| ␍␊ |
| /// <summary>␍␊ |
| /// Handler for when the user has chosen a menu entry.␍␊ |
| /// </summary>␍␊ |
| protected virtual void OnSelectEntry(int entryIndex, PlayerIndex playerIndex)␍␊ |
| {␍␊ |
| menuEntries[entryIndex].OnSelectEntry(playerIndex);␍␊ |
| }␍␊ |
| ␍␊ |
| ␍␊ |
| /// <summary>␍␊ |
| /// Handler for when the user has cancelled the menu.␍␊ |
| /// </summary>␍␊ |
| protected virtual void OnCancel(PlayerIndex playerIndex)␍␊ |
| {␍␊ |
| ExitScreen();␍␊ |
| }␍␊ |
| ␍␊ |
| ␍␊ |
| /// <summary>␍␊ |
| /// Helper overload makes it easy to use OnCancel as a MenuEntry event handler.␍␊ |
| /// </summary>␍␊ |
| protected void OnCancel(object sender, PlayerIndexEventArgs e)␍␊ |
| {␍␊ |
| OnCancel(e.PlayerIndex);␍␊ |
| }␍␊ |
| ␍␊ |
| ␍␊ |
| #endregion␍␊ |
| ␍␊ |
| #region Update and Draw␍␊ |
| ␍␊ |
| ␍␊ |
| /// <summary>␍␊ |
| /// Allows the screen the chance to position the menu entries. By default␍␊ |
| /// all menu entries are lined up in a vertical list, centered on the screen.␍␊ |
|
| // the movement slow down as it nears the end).␍␊ |
| float transitionOffset = (float)Math.Pow(TransitionPosition, 2);␍␊ |
| ␍␊ |
| Vector2 position = Vector2.Zero;␍␊ |
| position.Y = _menuBorderTop - _menuOffset;␍␊ |
| // start at Y = 175; each X value is generated per entry␍␊ |
| Vector2 position = new Vector2(0f, 175f);␍␊ |
| ␍␊ |
| // update each menu entry's location in turn␍␊ |
| for (int i = 0; i < _menuEntries.Count; ++i)␍␊ |
| for (int i = 0; i < menuEntries.Count; i++)␍␊ |
| {␍␊ |
| position.X = ScreenManager.GraphicsDevice.Viewport.Width / 2f;␍␊ |
| MenuEntry menuEntry = menuEntries[i];␍␊ |
| ␍␊ |
| // each entry is to be centered horizontally␍␊ |
| position.X = ScreenManager.GraphicsDevice.Viewport.Width / 2 - menuEntry.GetWidth(this) / 2;␍␊ |
| ␍␊ |
| if (ScreenState == ScreenState.TransitionOn)␍␊ |
| {␍␊ |
| position.X -= transitionOffset * 256;␍␊ |
| }␍␊ |
| else␍␊ |
| {␍␊ |
| position.X += transitionOffset * 256;␍␊ |
| }␍␊ |
| position.X += transitionOffset * 512;␍␊ |
| ␍␊ |
| // set the entry's position␍␊ |
| _menuEntries[i].Position = position;␍␊ |
| ␍␊ |
| if (position.Y < _menuBorderTop)␍␊ |
| {␍␊ |
| _menuEntries[i].Alpha = 1f -␍␊ |
| Math.Min(_menuBorderTop - position.Y, _menuBorderMargin) / _menuBorderMargin;␍␊ |
| }␍␊ |
| else if (position.Y > _menuBorderBottom)␍␊ |
| {␍␊ |
| _menuEntries[i].Alpha = 1f -␍␊ |
| Math.Min(position.Y - _menuBorderBottom, _menuBorderMargin) /␍␊ |
| _menuBorderMargin;␍␊ |
| }␍␊ |
| else␍␊ |
| {␍␊ |
| _menuEntries[i].Alpha = 1f;␍␊ |
| }␍␊ |
| menuEntry.Position = position;␍␊ |
| ␍␊ |
| // move down for the next entry the size of this entry␍␊ |
| position.Y += _menuEntries[i].GetHeight();␍␊ |
| position.Y += menuEntry.GetHeight(this);␍␊ |
| }␍␊ |
| Vector2 scrollPos = _scrollSlider.Position;␍␊ |
| scrollPos.Y = MathHelper.Lerp(_menuBorderTop, _menuBorderBottom, _menuOffset / _maxOffset);␍␊ |
| _scrollSlider.Position = scrollPos;␍␊ |
| }␍␊ |
| ␍␊ |
| ␍␊ |
| /// <summary>␍␊ |
| /// Updates the menu.␍␊ |
| /// </summary>␍␊ |
| public override void Update(GameTime gameTime, bool otherScreenHasFocus,␍␊ |
| bool coveredByOtherScreen)␍␊ |
| bool coveredByOtherScreen)␍␊ |
| {␍␊ |
| base.Update(gameTime, otherScreenHasFocus, coveredByOtherScreen);␍␊ |
| ␍␊ |
| // Update each nested MenuEntry object.␍␊ |
| for (int i = 0; i < _menuEntries.Count; ++i)␍␊ |
| for (int i = 0; i < menuEntries.Count; i++)␍␊ |
| {␍␊ |
| bool isSelected = IsActive && (i == _selectedEntry);␍␊ |
| _menuEntries[i].Update(isSelected, gameTime);␍␊ |
| bool isSelected = IsActive && (i == selectedEntry);␍␊ |
| ␍␊ |
| menuEntries[i].Update(this, isSelected, gameTime);␍␊ |
| }␍␊ |
| }␍␊ |
| ␍␊ |
| _scrollUp.Update(gameTime);␍␊ |
| _scrollDown.Update(gameTime);␍␊ |
| _scrollSlider.Update(gameTime);␍␊ |
| }␍␊ |
| ␍␊ |
| /// <summary>␍␊ |
| /// Draws the menu.␍␊ |
|
| // make sure our entries are in the right place before we draw them␍␊ |
| UpdateMenuEntryLocations();␍␊ |
| ␍␊ |
| GraphicsDevice graphics = ScreenManager.GraphicsDevice;␍␊ |
| SpriteBatch spriteBatch = ScreenManager.SpriteBatch;␍␊ |
| SpriteFont font = ScreenManager.Fonts.MenuSpriteFont;␍␊ |
| SpriteFont font = ScreenManager.Font;␍␊ |
| ␍␊ |
| spriteBatch.Begin();␍␊ |
| ␍␊ |
| // Draw each menu entry in turn.␍␊ |
| for (int i = 0; i < _menuEntries.Count; ++i)␍␊ |
| for (int i = 0; i < menuEntries.Count; i++)␍␊ |
| {␍␊ |
| bool isSelected = IsActive && (i == _selectedEntry);␍␊ |
| _menuEntries[i].Draw();␍␊ |
| MenuEntry menuEntry = menuEntries[i];␍␊ |
| ␍␊ |
| bool isSelected = IsActive && (i == selectedEntry);␍␊ |
| ␍␊ |
| menuEntry.Draw(this, isSelected, gameTime);␍␊ |
| }␍␊ |
| ␍␊ |
| // Make the menu slide into place during transitions, using a␍␊ |
| // power curve to make things look more interesting (this makes␍␊ |
| // the movement slow down as it nears the end).␍␊ |
| Vector2 transitionOffset = new Vector2(0f, (float)Math.Pow(TransitionPosition, 2) * 100f);␍␊ |
| float transitionOffset = (float)Math.Pow(TransitionPosition, 2);␍␊ |
| ␍␊ |
| spriteBatch.DrawString(font, _menuTitle, _titlePosition - transitionOffset + Vector2.One * 2f, Color.Black, 0,␍␊ |
| _titleOrigin, 1f, SpriteEffects.None, 0);␍␊ |
| spriteBatch.DrawString(font, _menuTitle, _titlePosition - transitionOffset, new Color(255, 210, 0), 0,␍␊ |
| _titleOrigin, 1f, SpriteEffects.None, 0);␍␊ |
| _scrollUp.Draw();␍␊ |
| _scrollSlider.Draw();␍␊ |
| _scrollDown.Draw();␍␊ |
| // Draw the menu title centered on the screen␍␊ |
| Vector2 titlePosition = new Vector2(graphics.Viewport.Width / 2, 80);␍␊ |
| Vector2 titleOrigin = font.MeasureString(menuTitle) / 2;␍␊ |
| Color titleColor = new Color(192, 192, 192) * TransitionAlpha;␍␊ |
| float titleScale = 1.25f;␍␊ |
| ␍␊ |
| titlePosition.Y -= transitionOffset * 100;␍␊ |
| ␍␊ |
| spriteBatch.DrawString(font, menuTitle, titlePosition, titleColor, 0,␍␊ |
| titleOrigin, titleScale, SpriteEffects.None, 0);␍␊ |
| ␍␊ |
| spriteBatch.End();␍␊ |
| }␍␊ |
| ␍␊ |
| ␍␊ |
| #endregion␍␊ |
| }␍␊ |
| } |
| }␍␊ |
accountmanagementengine