public void RegisterAsset(string type, string subtype, string[] fileExtensions, HandlerFunc handler)
{
if (AssetHandlers.ContainsKey(type) && AssetHandlers[type].ContainsKey(subtype))
{
throw new Exception($"Registering duplicate handler for {type}/{subtype}");
}
if (!AssetHandlers.ContainsKey(type))
{
AssetHandlers[type] = new Dictionary <string, HandlerFunc>();
}
foreach (var fileExtension in fileExtensions)
{
if (FileExtensionAssetTypes.ContainsKey(fileExtension))
{
throw new Exception($"Registering duplicate handler for asset type with file extension {fileExtension}");
}
FileExtensionAssetTypes[fileExtension] = type + "/" + subtype;
}
AssetHandlers[type][subtype] = handler;
}
public Asset?Import(string type, string subtype, bool createOnFail, bool lazyImport, Stream?sourceStream, string targetPath,
string name, Permissions perm, string sourcePath, params object[] args)
{
if (!AssetHandlers.ContainsKey(type) || !AssetHandlers[type].ContainsKey(subtype))
{
throw new Exception($"Importing asset with unregistered type {type}/{subtype}");
}
string path = FileSystem.BasePath + sourcePath;
if (sourceStream == null && sourcePath != "") // We need to read it
{
if (!File.Exists(path))
{
if (createOnFail)
{
System.IO.Directory.CreateDirectory(Path.GetDirectoryName(path));
sourceStream = File.Create(path);
}
}
else
{
sourceStream = File.Open(path, FileMode.Open, FileAccess.ReadWrite);
}
if (sourceStream == null)
{
throw new SynthesisException("Source stream for import is empty");
}
}
Asset?newAsset = AssetHandlers[type][subtype](name, perm, path, args);
if (newAsset == null)
{
return(null);
}
EventBus.EventBus.Push(AssetImportEvent.Tag, new AssetImportEvent(name, targetPath, type + "/" + subtype));
if (lazyImport)
{
LazyAsset lazyAsset = new LazyAsset(newAsset, sourceStream, targetPath);
return((Asset?)FileSystem.AddEntry(targetPath, lazyAsset.Load(new byte[0])));
}
byte[] data = new byte[0];
if (sourceStream != null)
{
int streamLength = (int)sourceStream.Length;
data = new byte[streamLength];
sourceStream.Read(data, 0, streamLength);
sourceStream.Close();
}
// TODO make it so we don't have to allocate twice the size of the asset every
// time we import it (i.e. a 500 KB asset will result in 1000 KB of allocation)
return((Asset?)FileSystem.AddEntry(targetPath, newAsset.Load(data)));
}