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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46
第 2 章
视图和菜单
当我们点开一个游戏时，通常不能直接开始玩游戏。大部分游戏都会有许多“不可
玩”的东西，游戏只有处理完这些工作之后才能进入游戏场景。比如一开始会弹出
一个设置界面，让玩家设置游戏音量等；或者让玩家挑选从哪个篇章开始玩。
对于此类的用户界面，尽管也能使用游戏图形系统来构建，但既然
iOS
中有现成的
用户界面库，那我们就没有必要去重复开发了。
UIKit
框架提供了许多控件，如按钮、滑块、
Imge View
、选择框等。此外，
UIKit
还提供了
View Controller
，允许你把游戏画面分成独立的、更易于使用的单元。
View Controller
还可以被放到故事板中，允许你直观地浏览游戏窗口之间的关联关
系。
UIKit
中的控件都可以定制，以适应游戏的风格，因此，
UIKit
也非常适合处理游
戏的可视化设计。你可以通过简单地修改颜色的方式来改变标准
iOS
控件样式，也
可以使用位图或其他资源来定制控件的外观。也就是说，你根本不需要重新实现标
准控件如按钮和滑块，这将大大节省游戏的编码时间。
对于菜单，懂得如何用故事板实现它就行了。因此，在开始本章正式内容之前，我
们首先来讨论如何创建一个故事板，并通过故事板来实现想在屏幕上展示的效果。
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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.