private RawTexture loadPng(Stream stream)
{
RawTexture t = new RawTexture();
var reader = new PngReader();
t.Pixels = reader.Read(stream);
t.PixelFormat = OpenTK.Graphics.ES20.PixelFormat.Rgba;
t.Width = reader.Width;
t.Height = reader.Height;
return(t);
}
private RawTexture getTexturePage(int texturePage)
{
RawTexture t;
if (!texturePages.TryGetValue(texturePage, out t))
{
t = new RawTexture();
using (var stream = store.GetStream($@"{assetName}_{texturePage}.png"))
{
var reader = new PngReader();
t.Pixels = reader.Read(stream);
t.PixelFormat = OpenTK.Graphics.ES20.PixelFormat.Rgba;
t.Width = reader.Width;
t.Height = reader.Height;
}
texturePages[texturePage] = t;
}
return(t);
}
/// <summary>
/// Tries to load an asset with the specified name and type.
/// </summary>
/// <param name="name">The name of the asset.</param>
/// <param name="asset">The returned asset, or null if it couldn't be loaded.</param>
/// <typeparam name="T">The type of the asset (can be Texture2D, Font, SoundEffect, Song or Effect)</typeparam>
/// <returns>true if the asset was loaded</returns>
public bool TryLoadAsset <T>(string name, out T asset, out Exception errorReason, bool keepAfterStateChange = false) where T : class, IDisposable
{
asset = null;
errorReason = null;
if (_loadedAssets.ContainsKey(name))
{
if (_loadedAssets[name].Asset is T)
{
asset = (T)_loadedAssets[name].Asset;
return(true);
}
return(false);
}
try
{
if (typeof(T) == typeof(Texture2D))
{
using (Stream stream = Game.Activity.Assets.Open(name))
{
MemoryStream copiedStream = new MemoryStream();
stream.CopyTo(copiedStream);
PngReader reader = new PngReader();
Texture2D texture = reader.Read(copiedStream, Game.GraphicsDevice);
Color[] data = new Color[texture.Width * texture.Height];
texture.GetData(data);
for (int i = 0; i < data.Length; i++)
{
data[i] = Color.FromNonPremultiplied(data[i].ToVector4());
}
Texture2D newTexture = new Texture2D(Game.GraphicsDevice, texture.Width, texture.Height);
newTexture.SetData(data);
texture.Dispose();
asset = newTexture as T;
_loadedAssets.Add(name, new LoadedAsset(asset, name, keepAfterStateChange));
return(true);
}
}
if (typeof(T) == typeof(Font))
{
using (Stream stream = Game.Activity.Assets.Open(name))
{
asset = new Font(Game.GraphicsDevice, stream) as T;
_loadedAssets.Add(name, new LoadedAsset(asset, name, keepAfterStateChange));
return(true);
}
}
if (typeof(T) == typeof(SoundEffect))
{
using (Stream stream = Game.Activity.Assets.Open(name))
{
asset = SoundEffect.FromStream(stream) as T;
_loadedAssets.Add(name, new LoadedAsset(asset, name, keepAfterStateChange));
return(true);
}
}
if (typeof(T) == typeof(Song))
{
// https://stackoverflow.com/questions/5813657/xna-4-song-fromuri-containing-spaces/5829463#5829463
ConstructorInfo ctor = typeof(Song).GetConstructor(
BindingFlags.NonPublic | BindingFlags.Instance, null,
new[] { typeof(string) }, null);
asset = ctor.Invoke(new object[] { name }) as T;
LoadedAsset a = new LoadedAsset(asset, name, keepAfterStateChange);
_loadedAssets.Add(name, a);
return(true);
}
if (typeof(T) == typeof(Effect))
{
using (Stream stream = Game.Activity.Assets.Open(name))
{
MemoryStream s = new MemoryStream();
stream.CopyTo(s);
asset = new Effect(Game.GraphicsDevice, s.ToArray()) as T;
_loadedAssets.Add(name, new LoadedAsset(asset, name, keepAfterStateChange));
return(true);
}
}
return(false);
}
catch (Exception e)
{
errorReason = e;
return(false);
}
}
