func adjustLabelFontSizeToFitRect(labelNode:SKLabelNode,rect:CGRect) {

    // Determine the font scaling factor that should let the label text fit in the given rectangle.
    let scalingFactor = min(rect.width / labelNode.frame.width,rect.height / labelNode.frame.height)

    // Change the fontSize.
    labelNode.fontSize *= scalingFactor

    // Optionally move the SKLabelNode to the center of the rectangle.
    labelNode.position = CGPoint(x: rect.midX,y: rect.midY - labelNode.frame.height / 2.0)
}@H_404_12@ 
 
这会调整标签的字体大小以准确适应宽度,但您可能需要更改该功能以便在所有方面添加一些额外的填充.