Simple Controller UI/gRPC working

CarControlleriOS/CarController/SimpleControllerView.swift

@@ -10,25 +10,27 @@ import SwiftUI
 
 struct SimpleControllerView: View {
     @EnvironmentObject var server: ServerData
-    @State var throttle: Float = 0.5
-    @State var steering: Float = 0.5
-
+    
+    // Need lazy so that we can initialise with local properties.
+    @ObservedObject var grpcController: PiLoader = PiLoader()
     
     var body: some View {
         HStack{
-            Slider(value: $throttle, in: 0...1){_ in
-                self.throttle = 0.5}
+            Slider(value: $grpcController.throttle, in: 0...1){_ in
+                self.grpcController.throttle = 0.5
+            }
             .rotationEffect(.degrees(270))
-         
-            Slider(value: $steering, in: 0...1){
-                _ in self.steering = 0.5
+            
+            Slider(value: $grpcController.steering, in: 0...1){_ in
+                self.grpcController.steering = 0.5
             }
         }
         .onAppear(){
-            // Start the gRPC updater. Should be in a separate class/struct to be easier to implement for SLAM Controller after.
+            self.grpcController.startUpdating()
         }
         .onDisappear(){
-            
+            // Stop the gRPC updater.
+            self.grpcController.stop()
         }
     }
 }