/// <summary>
/// Opens an SPR file and creates a <see cref="SpriteResource"/> object for it
/// </summary>
/// <param name="filepath">The absolute path to the SPR file to open</param>
/// <returns>The newly-created <see cref="Sprite"/></returns>
/// <remarks>
/// The original game code for reading SPR files can be found <code>ResourceDb::init_imported()</code>
/// in src/ORESDB.cpp around line 72. The <code>resName</code> will be "sprite\\NAME.SPR". (There's
/// no need to follow the call into <code>File::file_open()</code> in OFILE.cpp. Though the files are
/// well-structured, they are considered FLAT by 7KAA.
/// </remarks>
public void LoadSprite(string filepath)
{
if (this.ActivePalette == null)
throw new Exception("Cannot load a Sprite if the ActivePalette is null.");
//cant use the property here or we'll fire the event before we've finished loading
Sprite spr = new Sprite(this.ActivePalette);
//this._activeSprite = new Sprite(this.ActivePalette);
using (FileStream spritestream = File.OpenRead(filepath))
{
while (spritestream.Position < spritestream.Length)
{
SpriteFrame sf = new SpriteFrame(spr);
SprDataHandlers.SprStreamToSpriteFrame(sf, spritestream);
sf.ImageBmp = SprDataHandlers.FrameSprToBmp(sf, this.ActivePalette);
spr.Frames.Add(sf);
}
}
spr.Resource.FileName = Path.GetFileName(filepath);
spr.SpriteId = Path.GetFileNameWithoutExtension(filepath);
DataView dv = this.ActiveGameSet.GetSpriteDataView(spr.SpriteId);
spr.SetSpriteDataView(dv);
this.ActiveSprite = spr;
}
