/// <inheritdoc/>
public byte[] GetCompressedObservation()
{
var height = m_Rows;
var width = m_Columns;
var tempTexture = new Texture2D(width, height, TextureFormat.RGB24, false);
var converter = new OneHotToTextureUtil(height, width);
var bytesOut = new List <byte>();
// Encode the cell types and special types as separate batches of PNGs
// This is potentially wasteful, e.g. if there are 4 cell types and 1 special type, we could
// fit in in 2 images, but we'll use 3 here (2 PNGs for the 4 cell type channels, and 1 for
// the special types). Note that we have to also implement the sparse channel mapping.
// Optimize this it later.
var numCellImages = (m_NumCellTypes + 2) / 3;
for (var i = 0; i < numCellImages; i++)
{
converter.EncodeToTexture(m_Board.GetCellType, tempTexture, 3 * i);
bytesOut.AddRange(tempTexture.EncodeToPNG());
}
var numSpecialImages = (SpecialTypeSize + 2) / 3;
for (var i = 0; i < numSpecialImages; i++)
{
converter.EncodeToTexture(m_Board.GetSpecialType, tempTexture, 3 * i);
bytesOut.AddRange(tempTexture.EncodeToPNG());
}
DestroyTexture(tempTexture);
return(bytesOut.ToArray());
}
/// <inheritdoc/>
public byte[] GetCompressedObservation()
{
m_Board.CheckBoardSizes(m_MaxBoardSize);
var height = m_MaxBoardSize.Rows;
var width = m_MaxBoardSize.Columns;
var tempTexture = new Texture2D(width, height, TextureFormat.RGB24, false);
var converter = new OneHotToTextureUtil(height, width);
var bytesOut = new List <byte>();
var currentBoardSize = m_Board.GetCurrentBoardSize();
// Encode the cell types or special types as batches of PNGs
// This is potentially wasteful, e.g. if there are 4 cell types and 1 special type, we could
// fit in in 2 images, but we'll use 3 total (2 PNGs for the 4 cell type channels, and 1 for
// the special types).
var numCellImages = (m_OneHotSize + 2) / 3;
for (var i = 0; i < numCellImages; i++)
{
converter.EncodeToTexture(
m_GridValues,
tempTexture,
3 * i,
currentBoardSize.Rows,
currentBoardSize.Columns
);
bytesOut.AddRange(tempTexture.EncodeToPNG());
}
DestroyTexture(tempTexture);
return(bytesOut.ToArray());
}