// Private Methods
private void Read(BinaryReader reader)
{
Stream stream = reader.BaseStream;
int posFileStart = (int)reader.GetPosition();
Spr0Header header = stream.ReadStructure <Spr0Header>();
stream.Seek(posFileStart + header.texturePointerTableOffset, SeekOrigin.Begin);
TypePointerTable[] texturePointerTable = stream.ReadStructures <TypePointerTable>(header.numTextures);
stream.Seek(posFileStart + header.keyFramePointerTableOffset, SeekOrigin.Begin);
TypePointerTable[] keyFramePointerTable = stream.ReadStructures <TypePointerTable>(header.numKeyFrames);
mTextures = new List <TmxFile>(header.numTextures);
for (int i = 0; i < header.numTextures; i++)
{
stream.Seek(posFileStart + texturePointerTable[i].offset, SeekOrigin.Begin);
mTextures.Add(TmxFile.Load(stream, true));
}
mKeyFrames = new List <SprSprite>(header.numKeyFrames);
for (int i = 0; i < header.numKeyFrames; i++)
{
stream.Seek(posFileStart + keyFramePointerTable[i].offset, SeekOrigin.Begin);
mKeyFrames.Add(new SprSprite(reader));
}
}
// Internal Methods
internal override void Write(BinaryWriter writer)
{
// Save the start position to calculate the filesize and
// to write out the header after we know where all the structure offsets are
Stream stream = writer.BaseStream;
int posFileStart = (int)stream.Position;
stream.Seek(Spr0Header.SIZE, SeekOrigin.Current);
// Create initial header and tables
Spr0Header header = new Spr0Header(TextureCount, KeyFrameCount);
TypePointerTable[] keyFramePointerTable = new TypePointerTable[header.numKeyFrames];
TypePointerTable[] texturePointerTable = new TypePointerTable[header.numTextures];
// Set the pointer table offsets and seek past the entries
// as the entries will be written later
header.texturePointerTableOffset = (int)(stream.Position - posFileStart);
stream.Seek(TypePointerTable.SIZE * header.numTextures, SeekOrigin.Current);
header.keyFramePointerTableOffset = (int)(stream.Position - posFileStart);
stream.Seek(TypePointerTable.SIZE * header.numKeyFrames, SeekOrigin.Current);
// Write out the keyframe data and fill up the pointer table
for (int i = 0; i < header.numKeyFrames; i++)
{
//writer.AlignPosition(16);
keyFramePointerTable[i].offset = (int)(stream.Position - posFileStart);
mKeyFrames[i].Write(writer);
}
writer.Seek(16, SeekOrigin.Current);
writer.AlignPosition(16);
// Write out the texture data and fill up the pointer table
for (int i = 0; i < header.numTextures; i++)
{
texturePointerTable[i].offset = (int)(stream.Position - posFileStart);
mTextures[i].Write(writer);
writer.Seek(16, SeekOrigin.Current);
}
// Save the end position
long posFileEnd = stream.Position;
// Seek back to the tables and write out the tables
stream.Seek(posFileStart + header.texturePointerTableOffset, SeekOrigin.Begin);
stream.WriteStructures(texturePointerTable, header.numTextures);
stream.Seek(posFileStart + header.keyFramePointerTableOffset, SeekOrigin.Begin);
stream.WriteStructures(keyFramePointerTable, header.numKeyFrames);
// Seek back to the file and write out the header with
// the offsets to the structures in the file
writer.BaseStream.Seek(posFileStart, SeekOrigin.Begin);
writer.BaseStream.WriteStructure(header);
// Set the file pointer back to the end of the file as expected
writer.BaseStream.Seek(posFileEnd, SeekOrigin.Begin);
}
