/// <summary>
/// Sets sprite by identifier from the new collection.
/// </summary>
public void SetSprite(tk2dSpriteCollectionData newCollection, int newSpriteId)
{
bool switchedCollection = false;
if (Collection != newCollection)
{
Collection.RemoveRetain(this);
newCollection.AddRetain(this);
Collection = newCollection;
_spriteId = -1; // force an update, but only when the collection has changed
switchedCollection = true;
}
spriteId = newSpriteId;
if (switchedCollection)
{
UpdateMaterial();
}
}