private static void EncodeTile8(ref Tileset.Tile tile, ref byte[] bytes, int index)
{
for (int y = 0; y < 8; y++)
{
for (int x = 0; x < 8; x++)
{
bytes[index + x + y * 8] = (byte)tile[x, y];
}
}
}
private static void EncodeTile4(ref Tileset.Tile tile, ref byte[] bytes, int index)
{
for (int y = 0; y < 8; y++)
{
for (int x = 0; x < 4; x++)
{
bytes[index + x + y * 4] = (byte)((tile[x * 2, y] & 0xF) | ((tile[x * 2 + 1, y] & 0xF) << 4));
}
}
}
private static void DecodeTile8(ref byte[] bytes, int index, ref Tileset.Tile tile)
{
for (int y = 0; y < 8; y++)
{
for (int x = 0; x < 8; x++)
{
tile[x, y] = bytes[index + x + y * 8];
}
}
}
private static void DecodeTile4(ref byte[] bytes, int index, ref Tileset.Tile tile)
{
for (int y = 0; y < 8; y++)
{
for (int x = 0; x < 4; x++)
{
tile[x * 2, y] = (bytes[index + x + y * 4] & 0xF);
tile[x * 2 + 1, y] = (bytes[index + x + y * 4] >> 4 & 0xF);
}
}
}
public static Tileset.Tile[] DecodeTiles8(byte[] bytes)
{
var tiles = new Tileset.Tile[bytes.Length >> 6]; // / (8 * 8)
for (int i = 0; i < tiles.Length; i++)
{
DecodeTile8(ref bytes, i << 6, ref tiles[i]); // * (8 * 8)
}
return(tiles);
}
public static Tileset.Tile[] DecodeTiles4(byte[] bytes)
{
var tiles = new Tileset.Tile[bytes.Length >> 5]; // / (8 * 8 / 2)
for (int i = 0; i < tiles.Length; i++)
{
DecodeTile4(ref bytes, i << 5, ref tiles[i]); // * (8 * 8 / 2)
}
return(tiles);
}
