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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游戏的设计
｜
39
//
不论什么情况都失败
XCTFail("Everything is broken")
还有一些断言方法，在本书中不会出现。完整的断言方法列表可以看
XCTest
框架
文档（按下组合键
Command-Shift-O
，然后输入
XCTestAssertions
并敲回车键）。
1.19
二维网格
问题
你想在你的游戏中出现某种
2D
网格。
解决方案
GKGridGraph
类用于表示某种固定尺寸的网格。你可以用
GKGridGraphNode
子类来
存储某些对象，例如某个游戏实体在网格中的位置。
GKGridGraph
代表了一个由节点构成的二维表格，每个节点在该网格中都有一个指
定的坐标，同时每个节点都和表格中的其他节点相连。
例如，我们可以子类化一个
GKGridGraphNode
，用于保存一些额外信息，如字符串：
class GameNode : GKGridGraphNode {
var name : String
init (name: String, gridPosition: vector_int2) {
self.name = name
super.init(gridPosition: gridPosition)
}
override var description: String {
return self.name
}
required init?(coder aDecoder: NSCoder) {
fatalError("not implemented") ...
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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.