January 2020
Intermediate to advanced
356 pages
6h 4m
Chinese
Content preview from Swift游戏开发经典实例
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2D
图形和
Sprite Kit
｜
191
6.7
使用自定义字体
问题
我们想在游戏中增加一个自定义字体，这样我们可以显示特殊的文字效果。
解决方案
首先，我们要获得某个字体文件，
TrueType
或者
OpenType
格式的字体文件都可以，
也就是一个
.
ttf
或
.otf
文件。
把字体文件添加到项目中。打开项目的
Info
窗口，在
Custom Target Properties
下
创建一个新条目，叫作“
Fonts provided by application
”。它是
Array
类型，然后
将需要的字体文件名添加到这个
Array
中。
例如，如果我们在项目中增加了一个名为
MyFont.ttf
的字体文件，则可以将
MyFont.ttf
添加到“
Fonts provided by application
”数组中。
讨论
任何添加到应用程序中的字体，都可以通过
UIFont
类访问（参见
6.6
节）；要访
问这些字体，我们不需要做任何额外的工作。
如果我们还没有任何自定义字体，
Dafont
网站（
http://www.dafont.com
）上能找到
许多免费的字体，唯一需要注意的是，下载字体时应明确该字体是否可用于商业目
的。
6.8
场景切换
问题
我们想从一个场景切换到另一个场景。
解决方案
通过
SKView
的
presentScene:
方法，我们可以指定哪个场景将被显示：
192
｜
第
6
章
// newScene
是你想切换到的
SKScene
对象
self.view?.presentScene(newScene)
presentScene: ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.