/// <summary>
/// Search the given sprite asset and fallbacks for a sprite whose unicode value matches the target unicode.
/// </summary>
/// <param name="spriteAsset"></param>
/// <param name="unicode"></param>
/// <param name="includeFallbacks"></param>
/// <param name="spriteIndex"></param>
/// <returns></returns>
static TextSpriteAsset SearchForSpriteByUnicodeInternal(TextSpriteAsset spriteAsset, uint unicode, bool includeFallbacks, out int spriteIndex)
{
// Get sprite index for the given unicode
spriteIndex = spriteAsset.GetSpriteIndexFromUnicode(unicode);
if (spriteIndex != -1)
{
return(spriteAsset);
}
if (includeFallbacks && spriteAsset.fallbackSpriteAssets != null && spriteAsset.fallbackSpriteAssets.Count > 0)
{
return(SearchForSpriteByUnicodeInternal(spriteAsset.fallbackSpriteAssets, unicode, includeFallbacks, out spriteIndex));
}
spriteIndex = -1;
return(null);
}
/// <summary>
/// Search through the given sprite asset and its fallbacks for the specified sprite matching the given unicode character.
/// </summary>
/// <param name="spriteAsset">The font asset to search for the given character.</param>
/// <param name="unicode">The character to find.</param>
/// <param name="includeFallbacks"></param>
/// <param name="spriteIndex"></param>
/// <returns></returns>
public static TextSpriteAsset SearchForSpriteByUnicode(TextSpriteAsset spriteAsset, uint unicode, bool includeFallbacks, out int spriteIndex)
{
// Check to make sure sprite asset is not null
if (spriteAsset == null)
{
spriteIndex = -1; return(null);
}
// Get sprite index for the given unicode
spriteIndex = spriteAsset.GetSpriteIndexFromUnicode(unicode);
if (spriteIndex != -1)
{
return(spriteAsset);
}
// Initialize list to track instance of Sprite Assets that have already been searched.
if (s_SearchedSpriteAssets == null)
{
s_SearchedSpriteAssets = new List <int>();
}
s_SearchedSpriteAssets.Clear();
// Get instance ID of sprite asset and add to list.
int id = spriteAsset.GetInstanceID();
s_SearchedSpriteAssets.Add(id);
// Search potential fallback sprite assets if includeFallbacks is true.
if (includeFallbacks && spriteAsset.fallbackSpriteAssets != null && spriteAsset.fallbackSpriteAssets.Count > 0)
{
return(SearchForSpriteByUnicodeInternal(spriteAsset.fallbackSpriteAssets, unicode, includeFallbacks, out spriteIndex));
}
// Search default sprite asset potentially assigned in the Text Settings.
if (includeFallbacks && TextSettings.defaultSpriteAsset != null)
{
return(SearchForSpriteByUnicodeInternal(TextSettings.defaultSpriteAsset, unicode, includeFallbacks, out spriteIndex));
}
spriteIndex = -1;
return(null);
}