How to access to a variable in another struct? SWIFTUI - swiftui

Question

I would like to access to variables in other structs to have a total count.
Example code would demonstrate better:
struct level1: View {
#State var score1 = 5
}
struct level2: View {
#State var score2 = 7
}
In another struct, I would like to be able use score1 and score2 variables. The below code doesn't work, but I need something like this.
struct finalScore: View {
#State var totalScore = level1.score1 + level2.score2
}

Answer 1

Rethink it in some different way... like below, single-source trust, model separated - view separated, model changed - view react, this is the way SwiftUI goes.
Like
import SwiftUI
import Combine
class ScoreModel: ObservableObject {
#Published var score1 = 5
#Published var score2 = 7
}
struct MainView: View {
#ObservedObject var vm: ScoreModel = ScoreModel()
var body: some View {
VStack {
level1(vm: vm)
level2(vm: vm)
Divider()
finalScore(vm: vm)
}
}
}
struct level1: View {
#ObservedObject var vm: ScoreModel
var body: some View {
Text("\(vm.score1)")
}
}
struct level2: View {
#ObservedObject var vm: ScoreModel
var body: some View {
Text("\(vm.score2)")
}
}
struct finalScore: View {
#ObservedObject var vm: ScoreModel
var body: some View {
Text("\(vm.score1 + vm.score2)")
}
}

Answer 2

You would need to use #State & #Binding to accomplish this. Here's a working code that does what you are asking for.
import SwiftUI
struct ContentView: View {
#State var score1: Int = 5
#State var score2: Int = 7
var body: some View {
VStack {
HStack {
FirstView(score1: $score1)
SecondView(score2: $score2)
Spacer()
}
Divider()
Text("The total score is \(score1 + score2)")
Spacer()
}
.padding()
}
}
struct FirstView: View {
#Binding var score1: Int
var body: some View {
Stepper(value: $score1, in: 0...100) {
Text("\(score1)")
}
}
}
struct SecondView: View {
#Binding var score2: Int
var body: some View {
Stepper(value: $score2, in: 0...100) {
Text("\(score2)")
}
}
}