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comparison GeoQuiz/Logic/Game.swift @ 3:4dbe0cd9dadc

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first game prototype
author Dennis C. M. <dennis@denniscm.com>
date Thu, 22 Sep 2022 10:42:39 +0200
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children de54f05adb78
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2:5b7c89bd45c3 3:4dbe0cd9dadc
1 //
2 // GameProtocol.swift
3 // GeoQuiz
4 //
5 // Created by Dennis Concepción Martín on 18/9/22.
6 //
7
8 import Foundation
9 import SwiftUI
10
11 protocol Game: ObservableObject {
12
13 // Define generic type
14 associatedtype T: Equatable
15
16 // Game
17 var data: [String: T] { get set}
18 var dataAsked: [String] { get set }
19 var correctAnswer: (key: String, value: T) { get set }
20
21 // User
22 var userChoices: [String: T] { get set }
23 var userScore: Int { get set }
24 var userLives: Int { get set }
25
26 // Alerts
27 var alertTitle: String { get set }
28 var alertMessage: String { get set }
29 var showingNoLivesAlert: Bool { get set }
30 var showingEndGameAlert: Bool { get set }
31 var showingWrongAnswerAlert: Bool { get set }
32
33 // Animations
34 var scoreScaleAmount: Double { get set }
35 var livesScaleAmount: Double { get set }
36
37 // Modal views
38 var showingBuyLivesView: Bool { get set }
39 }
40
41 extension Game {
42 var questionCounter: Int {
43 dataAsked.count
44 }
45
46 func askQuestion() {
47 guard questionCounter < data.count else {
48 alertTitle = "Amazing!"
49 alertMessage = "You've completed the game."
50 showingEndGameAlert = true
51
52 return
53 }
54
55 // Get random choices
56 var userChoices = [String: T]()
57
58 while userChoices.count < 2 {
59 if let choice = data.randomElement() {
60 userChoices[choice.key] = choice.value
61 } else {
62 fatalError("Couldn't get a random value from data")
63 }
64 }
65
66 // Get question asked (correct answer)
67 let correctAnswer = data.first(where: {
68 !userChoices.keys.contains($0.key) && !dataAsked.contains($0.key)
69 })
70
71 // Unwrap optional
72 if let correctAnswer = correctAnswer {
73 userChoices[correctAnswer.key] = correctAnswer.value
74 dataAsked.append(correctAnswer.key)
75 self.correctAnswer = correctAnswer
76 } else {
77 fatalError("Couldn't unwrap optional value")
78 }
79
80 self.userChoices = userChoices
81 }
82
83 func answer(_ choice: (key: String, value: T)) {
84 guard userLives > 0 else {
85 alertTitle = "Not enough lives!"
86 alertMessage = "Please buy more lives to keep playing"
87 showingNoLivesAlert = true
88
89 return
90 }
91
92 if correctAnswer == choice {
93 hapticSuccess()
94 userScore += 1
95
96 withAnimation(.easeIn(duration: 0.5)) {
97 scoreScaleAmount += 1
98 }
99
100 askQuestion()
101 } else {
102 hapticError()
103 userLives -= 1
104
105 withAnimation(.easeIn(duration: 0.5)) {
106 livesScaleAmount += 1
107 }
108
109 alertTitle = "Wrong!"
110 alertMessage = "You have \(userLives) lives left"
111 showingWrongAnswerAlert = true
112 }
113
114 DispatchQueue.main.asyncAfter(deadline: .now() + 0.1) { [self] in
115 withAnimation(.easeIn(duration: 0.5)) {
116 scoreScaleAmount = 1
117 livesScaleAmount = 1
118 }
119 }
120 }
121 }