巨石强森(Dwayne“ The Rock” Johnson)曾经说过:“成功并不总是与伟大有关,而是与一致性有关。一贯的努力导致成功;伟大将会来临。”

挑战

  • 不允许答案少于三个字母或与我们的起始单词相同。对于三字母检查,最简单的操作是将一个检查放入isReal(),如果单词长度在三个字母以下,则返回false。对于第二部分,只需将起始词与输入词进行比较,如果相同则返回false。
  • 添加一个称为的左键按钮项startGame(),以便用户可以在需要时以一个新单词重新启动。
  • 在下方放置一个文本视图,List以便您可以跟踪并显示给定根词的玩家得分。如何计算分数取决于您,但是涉及单词数量及其字母数的内容是合理的。

自定的得分规则

拼写的单词所含字母数量345678超过8
得分1248122040

并且在拼写第4个单词开始,每拼写成功一次额外加5分

代码

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import SwiftUI

struct ContentView: View {
@State private var usedWords = [String]()
@State private var rootWord = ""
@State private var newWord = ""

@State private var errorTitle = ""
@State private var errorMessage = ""
@State private var showingError = false

@State private var sumscore: Int = 0
@State private var score: Int = 0

var body: some View {
NavigationView {
VStack {
TextField("Enter your word", text: $newWord, onCommit: addNewWord)
.autocapitalization(.none)
.textFieldStyle(RoundedBorderTextFieldStyle())
.padding()
List(usedWords, id: \.self){
Image(systemName: "\($0.count).circle")
Text($0)
}
Text("You get \(sumscore)")
}
.navigationBarTitle(rootWord)
.navigationBarItems(trailing: Button(action: startGame) {
Image(systemName: "goforward")
.foregroundColor(.black)
})
.onAppear(perform: startGame)
}.alert(isPresented: $showingError){
Alert(title: Text(errorTitle), message: Text(errorMessage), dismissButton: .default(Text("OK")))


}

}
func addNewWord() {
//将单词全部小写并删除空格和换行符
let answer = newWord.lowercased().trimmingCharacters(in: .whitespacesAndNewlines)
guard isOriginal(word: answer) else {
wordError(title: "word used already", message: "Be more original")
return
}
guard isPossible(word: answer) else {
wordError(title: "Word not recongnized", message: "You can't just make them up, you know!")
return
}
guard isReal(word: answer) else {
wordError(title: "Word not possible", message: "That isn't a real word.")
return
}
//判断是否有字符,没有则退出
guard answer.count > 0 else {
return
}

//计算得分
caculationScore(answer: answer)


//将输入的文本加入到数组
usedWords.insert(answer, at: 0)
newWord = ""
}

func startGame(){
// 获取资源库中的文件
if let startWordsURL = Bundle.main.url(forResource: "start", withExtension: "txt"){
// 将文件中的内容加入字符串
if let startWords = try? String(contentsOf: startWordsURL){
// 通过换行符将字符串分割为数组
let allWords = startWords.components(separatedBy: "\n")
rootWord = allWords.randomElement() ?? "sillkworm"
//初始化得分和数组
sumscore = 0
usedWords = [String]()
// 执行到这里就可以返回了
return
}
}
//如果产生问题则报错
fatalError("Could not load start.txt form bundle.")
}

func isOriginal(word: String) -> Bool {
!usedWords.contains(word)
}

func isPossible(word: String) -> Bool {
var tempWord = rootWord

for letter in word {
if let pos = tempWord.firstIndex(of: letter) {
tempWord.remove(at: pos)
}else {
return false
}

}
return true
}

func isReal(word: String) -> Bool {
// 检查是否小于三个字母
let threewordslim = word.count >= 3

// 检查与游戏词语是否相同
let samewordlim = !(word == rootWord)

let checker = UITextChecker()
let range = NSRange(location: 0, length: word.utf16.count)
let misspelledRange = checker.rangeOfMisspelledWord(in: word, range: range, startingAt: 0, wrap: false, language: "en")

return misspelledRange.location == NSNotFound && threewordslim && samewordlim
}

func wordError(title: String, message: String) {
errorTitle = title
errorMessage = message
showingError = true


}
func caculationScore(answer: String){
//计算得分
let wordnum = answer.count
let wordsnum = usedWords.count

switch wordnum {
case 3:
score = 1
case 4:
score = 2
case 5:
score = 4
case 6:
score = 8
case 7:
score = 12
case 8:
score = 20
default:
score = 40
}

//因为是添加之前,所以从第4的单词开始不是-3而是-2
let addscore = (wordsnum - 2) * 5

if addscore > 0 {
score += addscore
}

sumscore += score
score = 0
}
}

struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}

参考资料

查看下一天的SwiftUI学习笔记

关于100days英文课程