/// <summary>
/// Attempts to look-up the surface closest to the given size.
/// </summary>
/// <param name="size">The ideal size of the surface requrested.</param>
/// <returns>A surface that closesly resembles the ideal surface in size.</returns>
internal DirectDrawSpriteSurface GetClosestSurface(int size)
{
DirectDrawSpriteSurface close = null;
if (!sizedSurfaces)
{
return(surfaces[0]);
}
for (var i = 1; i <= 48; i++)
{
if (surfaces[i] == null)
{
continue;
}
close = surfaces[i];
if (GameConfig.UseLargeGraphics)
{
continue;
}
if (i >= size)
{
break;
}
}
return(close);
}
/// <summary>
/// Adds a new sized surface to the sprite manager. A sized surface
/// attempts to load multiple surfaces for the various sizes of a keyed
/// sprite.
/// </summary>
/// <param name="key">The name of the sprite surface.</param>
/// <param name="xFrames">The number of frames of animation.</param>
/// <param name="yFrames">The number of frame types.</param>
internal void AddSizedSurface(string key, int xFrames, int yFrames)
{
if (string.IsNullOrEmpty(key))
{
return;
}
Sprites[key] = null;
try
{
Int32.Parse(key);
return;
}
catch
{
}
var tss = new TerrariumSpriteSurface();
var bmps = Directory.GetFiles(GameConfig.MediaDirectory, key + "*.bmp");
for (var i = 0; i < bmps.Length; i++)
{
if (!IsSourceValid(bmps[i], key))
{
continue;
}
DirectDrawSpriteSurface dds;
try
{
dds = new DirectDrawSpriteSurface(
Path.GetFileNameWithoutExtension(bmps[i]),
bmps[i],
xFrames,
yFrames
);
}
catch
{
dds = null;
}
if (dds != null)
{
// Only if frames are between 8 and 48 pixels.
if (dds.FrameWidth > 7 && dds.FrameWidth < 49)
{
tss.AttachSurface(dds, dds.FrameWidth);
Sprites[key] = tss;
}
}
}
}
/// <summary>
/// Attaches a sized surface to this instance. No bounds
/// checking is performed. The size should be between 0 and 48.
/// The sizedSurfaces field is set to true.
/// </summary>
/// <param name="ddss">The sprite surface to attach to this instance.</param>
/// <param name="size">The size of this sprite surface.</param>
internal void AttachSurface(DirectDrawSpriteSurface ddss, int size)
{
sizedSurfaces = true;
surfaces[size] = ddss;
}
/// <summary>
/// Attaches a single, unsized surface to this instance.
/// If sizedSurface was previously set, it is now unset.
/// </summary>
/// <param name="ddss">The surface to attach.</param>
internal void AttachSurface(DirectDrawSpriteSurface ddss)
{
sizedSurfaces = false;
surfaces[0] = ddss;
}
