89 lines
3.2 KiB
C#
89 lines
3.2 KiB
C#
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using System;
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using Microsoft.Xna.Framework;
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using Microsoft.Xna.Framework.Content;
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using Microsoft.Xna.Framework.Graphics;
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using Microsoft.Xna.Framework.Input;
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namespace FarseerPhysics.SamplesFramework
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{
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public class LogoScreen : GameScreen
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{
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private const float LogoScreenHeightRatio = 4f / 6f;
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private const float LogoWidthHeightRatio = 1.4f;
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private ContentManager _content;
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private Rectangle _destination;
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private TimeSpan _duration;
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private Texture2D _farseerLogoTexture;
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public LogoScreen(TimeSpan duration)
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{
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_duration = duration;
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TransitionOffTime = TimeSpan.FromSeconds(2.0);
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}
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/// <summary>
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/// Loads graphics content for this screen. The background texture is quite
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/// big, so we use our own local ContentManager to load it. This allows us
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/// to unload before going from the menus into the game itself, wheras if we
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/// used the shared ContentManager provided by the Game class, the content
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/// would remain loaded forever.
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/// </summary>
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public override void LoadContent()
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{
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if (_content == null)
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{
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_content = new ContentManager(ScreenManager.Game.Services, "Content");
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}
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_farseerLogoTexture = _content.Load<Texture2D>("Common/logo");
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Viewport viewport = ScreenManager.GraphicsDevice.Viewport;
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int rectHeight = (int)(viewport.Height * LogoScreenHeightRatio);
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int rectWidth = (int)(rectHeight * LogoWidthHeightRatio);
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int posX = viewport.Bounds.Center.X - rectWidth / 2;
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int posY = viewport.Bounds.Center.Y - rectHeight / 2;
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_destination = new Rectangle(posX, posY, rectWidth, rectHeight);
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}
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/// <summary>
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/// Unloads graphics content for this screen.
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/// </summary>
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public override void UnloadContent()
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{
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_content.Unload();
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}
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public override void HandleInput(InputHelper input, GameTime gameTime)
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{
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if (input.KeyboardState.GetPressedKeys().Length > 0 ||
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input.GamePadState.IsButtonDown(Buttons.A | Buttons.Start | Buttons.Back) ||
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input.MouseState.LeftButton == ButtonState.Pressed)
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{
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_duration = TimeSpan.Zero;
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}
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}
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public override void Update(GameTime gameTime, bool otherScreenHasFocus,
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bool coveredByOtherScreen)
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{
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_duration -= gameTime.ElapsedGameTime;
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if (_duration <= TimeSpan.Zero)
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{
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ExitScreen();
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}
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base.Update(gameTime, otherScreenHasFocus, coveredByOtherScreen);
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}
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public override void Draw(GameTime gameTime)
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{
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ScreenManager.GraphicsDevice.Clear(Color.White);
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ScreenManager.SpriteBatch.Begin();
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ScreenManager.SpriteBatch.Draw(_farseerLogoTexture, _destination, Color.White);
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ScreenManager.SpriteBatch.End();
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}
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}
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}
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