topical media & game development
game-xna-intro-XnaShooter-Graphics-AnimatedTexture.cs / cs
// Project: XnaShooter, File: AnimatedTexture.cs
// Namespace: XnaShooter.Graphics, Class: AnimatedTexture
// Path: C:\code\XnaBook\XnaShooter\Graphics, Author: abi
// Code lines: 46, Size of file: 1,03 KB
// Creation date: 07.12.2006 18:22
// Last modified: 07.12.2006 21:41
// Generated with Commenter by abi.exDream.com
#region Using directives
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using XnaShooter.Helpers;
using XnaShooter.Game;
using Microsoft.Xna.Framework.Graphics;
using XnaTexture = Microsoft.Xna.Framework.Graphics.Texture2D;
using XnaShooter.Sounds;
using Microsoft.Xna.Framework;
#endregion
namespace XnaShooter.Graphics
{
<summary>
Animated texture
</summary>
public class AnimatedTexture : Texture
{
#region Variables
<summary>
Textures for the animation.
You can still use d3dTexture, it will just hold current animation
texture! See Select(.).
</summary>
private XnaTexture[] xnaTextures = null;
<summary>
Get animation length (how many textures are used inside of this
animated texture). Can be used for the Select(.) method.
</summary>
<returns>Int
</returns>
public int AnimationLength
{
get
{
return xnaTextures != null ?
xnaTextures.Length : 1;
} // get
} // AnimationLength
<summary>
Get animated texture
</summary>
<param name="animationNumber">Animation number
</param>
<returns>XnaTexture
</returns>
public XnaTexture GetAnimatedTexture(int animationNumber)
{
return xnaTextures[animationNumber % xnaTextures.Length];
} // GetAnimatedTexture(aniNumber)
#endregion
#region Constructor
<summary>
Create animated texture, don't allow empty constructor from outside.
</summary>
protected AnimatedTexture()
{
} // AnimatedTexture()
<summary>
Create animated texture from given filename.
Will go through all filenames with textureFilename + "0001", "0002",
etc. until the filename is not longer found.
</summary>
<param name="setFilename">Set filename, must be relative and
without the 0001.dds, 0002.dds, etc. extension.
</param>
public AnimatedTexture(string setFilename)
{
if (String.IsNullOrEmpty(setFilename))
throw new ArgumentNullException("setFilename",
"Unable to create texture without valid filename.");
// Set filename
texFilename = StringHelper.ExtractFilename(setFilename, true);
// Try to load texture
try
{
string filenameFirstPart =
Path.Combine(Directories.ContentDirectory, texFilename);
// Build full filename
string fullFilename = filenameFirstPart + "0001";
// Check if file exists, else we can't continue loading!
if (File.Exists(fullFilename+".xnb") == false)
throw new FileNotFoundException(fullFilename + ".xnb");
// Try loading as 2d texture
internalXnaTexture = BaseGame.Content.Load<Texture2D>(fullFilename);
// Get info from the texture directly.
texWidth = internalXnaTexture.Width;
texHeight = internalXnaTexture.Height;
// We will use alpha for Dxt3, Dxt5 or any format starting with "A",
// there are a lot of those (A8R8G8B8, A4R4G4B4, A8B8G8R8, etc.)
hasAlpha =
internalXnaTexture.Format == SurfaceFormat.Dxt5 ||
internalXnaTexture.Format == SurfaceFormat.Dxt3 ||
internalXnaTexture.Format.ToString().StartsWith("A");
loaded = true;
CalcHalfPixelSize();
// Ok, now load all other animated textures
List<XnaTexture> animatedTextures =
new List<XnaTexture>();
animatedTextures.Add(internalXnaTexture);
int texNumber = 2;
while (File.Exists(filenameFirstPart +
texNumber.ToString("0000")+".xnb"))
{
animatedTextures.Add(BaseGame.Content.Load<Texture2D>(
filenameFirstPart + texNumber.ToString("0000")));
texNumber++;
} // while (File.Exists)
xnaTextures = animatedTextures.ToArray();
} // try
catch (Exception ex)
{
// Failed to load
loaded = false;
Log.Write("Failed to load animated texture " + texFilename +
", will use empty texture! Error: " + ex.ToString());
} // catch (ex)
} // AnimatedTexture(name)
#endregion
#region Select
<summary>
Select this texture as texture stage 0
</summary>
<param name="animationNumber">Number
</param>
public void Select(int animationNumber)
{
if (xnaTextures != null &&
xnaTextures.Length > 0)
{
// Select new animation number
internalXnaTexture = xnaTextures[animationNumber % xnaTextures.Length];
} // if
} // Select(num)
#endregion
#region Unit Testing
if DEBUG
<summary>
Test textures
</summary>
public static void TestAnimatedTexture()
{
AnimatedTexture explosionTexture = null;
TestGame.Start("TestAnimatedTexture",
delegate
{
explosionTexture = new AnimatedTexture("destroy");
},
delegate
{
explosionTexture.Select((int)BaseGame.TotalTimeMs / 33);
int screenSize =
Math.
Max(BaseGame.Width * 2 / 19, BaseGame.Height * 2 / 19);
explosionTexture.RenderOnScreen(new Rectangle(
BaseGame.Width / 2 - screenSize / 2,
BaseGame.Height / 2 - screenSize / 2,
screenSize, screenSize));
if (Input.MouseLeftButtonJustPressed)
Sound.Play(Sound.Sounds.Explosion);
});
} // TestAnimatedTexture()
endif
#endregion
} // class AnimatedTexture
} // namespace XnaShooter.Graphics
(C) Æliens
20/2/2008
You may not copy or print any of this material without explicit permission of the author or the publisher.
In case of other copyright issues, contact the author.
