プログラミングガイド/アプリケーションモデル/How to: ゲームの一時停止 - ニュース速報XNA360

Demonstrates how to add pause functionality to a game.

To add pause functionality to a game

1. Derive a class from Game. 

2. Add a variable to track the pause state. 

3. Add a variable to track the state of the pause key. 

4. Add a function to poll the state of the pause key with Keyboard.GetState and KeyboardState.IsKeyDown. If the key has changed from down to up, toggle the pause state. 

5.Add a conditional around any update code so it will be called only if the game is not paused. 

C# Copy Code

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Using Statements
using System;
using System.Collections.Generic;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Audio;
using Microsoft.Xna.Framework.Content;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using Microsoft.Xna.Framework.Storage;

public class Game1 : Microsoft.Xna.Framework.Game
{

   GraphicsDeviceManager graphics;
   ContentManager content;

   private bool paused = false;
   private bool pauseKeyDown = false;
   private KeyboardState keyboardState;
   private GamePadState gamePadState;

   public Game1()
   {
       graphics = new GraphicsDeviceManager(this);
       content = new ContentManager(Services);
   }

   protected override void Initialize()
   {
       // TODO: Add your initialization logic here

       base.Initialize();
   }

   protected override void LoadGraphicsContent(bool loadAllContent)
   {
       if (loadAllContent)
       {
           // TODO: Load any ResourceManagementMode.Automatic content
       }

       // TODO: Load any ResourceManagementMode.Manual content
   }

   protected override void UnloadGraphicsContent(bool unloadAllContent)
   {
       if (unloadAllContent == true)
       {
           content.Unload();
       }
   }

   protected override void Update(GameTime gameTime)
   {
       gamePadState = GamePad.GetState(PlayerIndex.One);
       keyboardState = Keyboard.GetState();

       // Allows the default game to exit on Xbox 360 and Windows
       if (gamePadState.Buttons.Back == ButtonState.Pressed) {
           this.Exit();
       }

       // TODO: Add your update logic here
       checkPauseKey();
       if (paused == false)
       {
           base.Update(gameTime);

           Simulate();
       }

   }

   public void Simulate()
   {
       //add game logic
   }

   void checkPauseKey()
   {
       if (keyboardState.IsKeyDown(Keys.P) || (gamePadState.Buttons.Y == ButtonState.Pressed))
       {
           pauseKeyDown = true;
       }
       else if (pauseKeyDown)
       {
           pauseKeyDown = false;
           paused = !paused;
       }
   }

   protected override void Draw(GameTime gameTime)
   {
       graphics.GraphicsDevice.Clear(Color.CornflowerBlue);

       // TODO: Add your drawing code here

       base.Draw(gameTime);
   }

}