topical media & game development

topical media & game development

[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

game-xna-intro-XnaShooter-Game-ScreenshotCapturer.cs / cs


  // Does not work on the Xbox360, no Save method in the Texture class!
  if !XBOX360
  
  #region Using Statements
  using System;
  using System.Collections.Generic;
  using Microsoft.Xna.Framework;
  using XnaShooter.Helpers;
  using Microsoft.Xna.Framework.Input;
  using System.IO;
  using Microsoft.Xna.Framework.Graphics;
  #endregion
  
  namespace XnaShooter.Game
  {

<summary> This is a game component that implements IUpdateable. </summary> public partial class ScreenshotCapturer : GameComponent { #region Variables <summary> Internal screenshot number (will increase by one each screenshot) </summary> private int screenshotNum = 0; <summary> Link to BaseGame class instance. Also holds windows title, which is used instead of Application.ProgramName. </summary> BaseGame game; #endregion


                  #region Constructor
                  public ScreenshotCapturer(BaseGame setGame)
                          : base(setGame)
                  {
                          game = setGame;
                          screenshotNum = GetCurrentScreenshotNum();
                  } // ScreenshotCapturer(game)
                  #endregion
  
                  #region Make screenshot
                  #region Screenshot name builder

<summary> Screenshot name builder </summary> <param name="num">Num</param> <returns>String</returns> private string ScreenshotNameBuilder(int num) { return Directories.ScreenshotsDirectory + "\\" + game.Window.Title + " Screenshot " + num.ToString("0000") + ".jpg"; } // ScreenshotNameBuilder(num) #endregion


                  #region Get current screenshot num

<summary> Get current screenshot num </summary> <returns>Int</returns> private int GetCurrentScreenshotNum() { // We must search for last screenshot we can found in list using own // fast filesearch int i = 0, j = 0, k = 0, l = -1; // First check if at least 1 screenshot exist if (File.Exists(ScreenshotNameBuilder(0)) == true) { // First scan for screenshot num/1000 for (i = 1; i < 10; i++) { if (File.Exists(ScreenshotNameBuilder(i * 1000)) == false) break; } // for (i)


                                  // This i*1000 does not exist, continue scan next level
                                  // screenshotnr/100
                                  i--;
                                  for (j = 1; j < 10; j++)
                                  {
                                          if (File.Exists(ScreenshotNameBuilder(i * 1000 + j * 100)) == false)
                                                  break;
                                  } // for (j)
  
                                  // This i*1000+j*100 does not exist, continue scan next level
                                  // screenshotnr/10
                                  j--;
                                  for (k = 1; k < 10; k++)
                                  {
                                          if (File.Exists(ScreenshotNameBuilder(
                                                          i * 1000 + j * 100 + k * 10)) == false)
                                                  break;
                                  } // for (k)
  
                                  // This i*1000+j*100+k*10 does not exist, continue scan next level
                                  // screenshotnr/1
                                  k--;
                                  for (l = 1; l < 10; l++)
                                  {
                                          if (File.Exists(ScreenshotNameBuilder(
                                                          i * 1000 + j * 100 + k * 10 + l)) == false)
                                                  break;
                                  } // for (l)
  
                                  // This i*1000+j*100+k*10+l does not exist, we have now last
                                  // screenshot nr!!!
                                  l--;
                          } // if (File.Exists)
  
                          return i * 1000 + j * 100 + k * 10 + l;
                  } // GetCurrentScreenshotNum()
                  #endregion

<summary> Make screenshot </summary> private void MakeScreenshot() { try { //NOTE: This doesn't always work on all cards, especially if // desktop mode switches in fullscreen mode!


                                  screenshotNum++;
                                  // Make sure screenshots directory exists
                                  if (Directory.Exists(Directories.ScreenshotsDirectory) == false)
                                          Directory.CreateDirectory(Directories.ScreenshotsDirectory);
  
                                  using (Texture2D dstTexture = new Texture2D(
                                          BaseGame.Device,
                                          BaseGame.Width,
                                          BaseGame.Height,
                                          1,
                                          ResourceUsage.ResolveTarget,
                                          SurfaceFormat.Color,
                                          ResourceManagementMode.Manual))
                                  {
                                          // Get data with help of the resolve method
                                          BaseGame.Device.ResolveBackBuffer(dstTexture);
  
                                          dstTexture.Save(
                                                  ScreenshotNameBuilder(screenshotNum),
                                                  ImageFileFormat.Jpg);
                                  } // using
                          } // try
                          catch (Exception ex)
                          {
                                  Log.Write("Failed to save Screenshot: " + ex.ToString());
                          } // catch (ex)
                  } // MakeScreenshot()
                  #endregion
  
                  #region Update

<summary> Allows the game component to update itself. </summary> <param name="gameTime">Provides a snapshot of timing values.</param> public override void Update(GameTime gameTime) { if (Input.KeyboardKeyJustPressed(Keys.PrintScreen)) MakeScreenshot();


                          base.Update(gameTime);
  
                          /*TODO?
                          // Make a screenshot?
                          if (remToMakeScreenshot)
                          {
                                  remToMakeScreenshot = false;
                                  MakeScreenshot();
                          } // if (remToMakeScreenshot)
  			 */
                  } // Update(gameTime)
                  #endregion
          } // class ScreenshotCapturer
  } // namespace XnaShooter.Game
  endif

[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

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