将SKLabelNode放在SKSpriteNode上居中 [英] Centre a SKLabelNode on a SKSpriteNode

问题描述

我有一个SKLabelNode，它是SKSpriteNode的子级，因为我试图创建一个Button类，以更简单的方式创建按钮.我已经尝试过使用SKSpriteNode的锚点进行一些操作，但是我不太了解发生了什么.如何将标签居中放置在Sprite(它的父节点)上?

I have an SKLabelNode that is the child of a SKSpriteNode because I'm trying to create a Button class to create buttons in an easier way. I've tried a couple of things using the anchor point of the SKSpriteNode, but I don't quite understand exactly what is going on. How do I centre the label onto the sprite (it's parent node)?

推荐答案

我意识到了如何解决这个问题……这就是我所做的.请记住，我有一个名为Button的类，它是SKSpriteNode的子类.

I realized how to solve this...here's what i did. Keep in mind that I have a class called Button that is a subclass of SKSpriteNode.

在Button.m类中，我有一个名为label的实例变量，它是SKLabelNode.我将标签节点作为子节点添加到按钮，然后将水平和垂直对齐方式设置为居中.

In the Button.m class I have an instance variable called label that is a SKLabelNode. I add the label node as a child to the button then set the horizontal and vertical alignment modes to centre.

label = [[SKLabelNode alloc] init];
[self addChild:label];
[label setHorizontalAlignmentMode:SKLabelHorizontalAlignmentModeCenter];
[label setVerticalAlignmentMode:SKLabelVerticalAlignmentModeCenter];

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