/// <summary> Create a copy of a given <see cref="PalettedSprite"/> with the given <paramref name="palette"/> </summary>
/// <param name="orig"> Orignal <see cref="PalettedSprite"/> to share palette indexes with </param>
/// <param name="palette"> <see cref="Pixel"/>[] to use as this sprite's Palette. </param>
public PalettedSprite(PalettedSprite orig, Pixel[] palette)
{
Width = orig.Width;
Height = orig.Height;
colors = orig.colors;
this.palette = palette;
}
/// <summary> Attempts to load a <see cref="PalettedSprite"/> from a `.pspr` format file </summary>
/// <param name="path"> Path to file to load </param>
/// <returns> Loaded sprite or null if load was unsuccessful. </returns>
public static PalettedSprite LoadFromPSPR(string path)
{
PalettedSprite spr = null;
try {
using (Stream stream = File.OpenRead(path)) {
using (BinaryReader reader = new BinaryReader(stream)) {
if (((char)reader.ReadByte()) != 'P')
{
throw new InvalidDataException("Data file does not have PSPR header.");
}
if (((char)reader.ReadByte()) != 'S')
{
throw new InvalidDataException("Data file does not have PSPR header.");
}
if (((char)reader.ReadByte()) != 'P')
{
throw new InvalidDataException("Data file does not have PSPR header.");
}
if (((char)reader.ReadByte()) != 'R')
{
throw new InvalidDataException("Data file does not have PSPR header.");
}
int w = reader.ReadInt32();
int h = reader.ReadInt32();
int ncol = Mathf.Min(255, reader.ReadInt32());
Pixel[] placeholderPalette = new Pixel[ncol + 1];
spr = new PalettedSprite(w, h, placeholderPalette);
for (int y = 0; y < h; y++)
{
for (int x = 0; x < w; x++)
{
spr.SetIndex(x, y, reader.ReadByte());
}
}
}
}
} catch (Exception e) {
Console.WriteLine($"Error Loading PSPR {e}");
spr = null;
}
return(spr);
}
