public T Load <T>(string resourceType, int resourceId, IDictionary <string, object> parameters) where T : Resource
{
var cacheKey = string.Format("{0}_{1}", resourceType, resourceId);
if (!this.cache.ContainsKey(cacheKey))
{
if (this.loaders.ContainsKey(resourceType))
{
var loader = this.loaders[resourceType];
ResourceIndexEntry roomReference;
if (resourceType == "ROOM")
{
roomReference = new ResourceIndexEntry((byte)resourceId, 0);
}
else
{
roomReference = FindIndexFromResourceId(resourceType, resourceId);
}
// Find the room offset
var roomOffset = this.roomsIndexList[roomReference.RoomId];
// Change the position of the stream
this.dataFileReader.BaseStream.Position = roomOffset;
if (resourceType != "ROOM")
{
this.dataFileReader.BaseStream.Seek(roomReference.Offset, SeekOrigin.Current);
}
// Load the resource
var resource = loader.LoadResourceData(dataFileReader, cacheKey, parameters);
// Add the created resource to the cache
this.cache.Add(cacheKey, resource);
// Return the resource
return((T)resource);
}
else
{
throw new InvalidOperationException(string.Format("No resource loaders for blockType '{0}' were found.", resourceType));
}
}
else
{
return((T)this.cache[cacheKey]);
}
}
private ResourceIndexEntry[] ReadResourceReferenceList(ScummBinaryReader reader, ref ushort itemsCount)
{
itemsCount = reader.ReadUInt16();
var resourceReferenceList = new ResourceIndexEntry[itemsCount];
var roomIdList = new byte[itemsCount];
for (int i = 0; i < itemsCount; i++)
{
roomIdList[i] = reader.ReadByte();
}
for (int i = 0; i < itemsCount; i++)
{
var resourceOffset = reader.ReadUInt32();
resourceReferenceList[i] = new ResourceIndexEntry(roomIdList[i], resourceOffset);
}
return(resourceReferenceList);
}
