fix SonarPen for iOS

PanoPainter/AppDelegate.m

@@ -18,6 +18,7 @@
 @interface AppDelegate () {
     GameViewController* view;
     WTSonarPenDriver* sonarpen_driver;
+    bool sonarpen_started;
 }
 
 @end
@@ -35,6 +36,11 @@
     [MSCrashes generateTestCrash];
 }
 
+- (bool)sonarpen_present
+{
+    return sonarpen_started && [sonarpen_driver isPenAttached];
+}
+
 - (float)sonarpen_pressure
 {
     return [sonarpen_driver isPenAttached] ? [sonarpen_driver pressure] : 1.f;
@@ -46,29 +52,41 @@
         case WTSonarPenDriverStateInit:
             NSLog(@"Status: Initializing"); break;
         case WTSonarPenDriverStateRunning:
-            NSLog(@"Status: Running"); break;
+            NSLog(@"Status: Running");
+            App::I->message_box("SonarPen", "Your SonarPen is now ready. Have fun!");
+            break;
         case WTSonarPenDriverStateCalibrating:
             NSLog(@"Status: Calibrating"); break;
         case WTSonarPenDriverStateNotSonarPen:
-            NSLog(@"Status: Not a Sonar Pen"); break;
+            NSLog(@"Status: Not a Sonar Pen");
+            App::I->message_box("SonarPen Error", "Couldn't recognize the device attatched to the jack plug as a SonarPen. Please remove it and plug it back in.");
+            break;
         case WTSonarPenDriverStateCalibratingMax:
             NSLog(@"Status: Calibrating Max Value"); break;
         case WTSonarPenDriverStateWaitingForPermission:
             NSLog(@"Status: Wait for Permission"); break;
         case WTSonarPenDriverStateNoMicrophonePermission:
-            NSLog(@"Status: No Microphone Permission"); break;
+            NSLog(@"Status: No Microphone Permission");
+            App::I->message_box("SonarPen Error", "SonarPen could not be started because you didn't allow the microphone permission. Please go to Settings -> PanoPainter and enable Microphone.");
+            break;
     }
 }
 
+- (void)sonarpen_start {
+    if (sonarpen_started)
+        return;
+    sonarpen_driver = [[WTSonarPenDriver alloc] initWithApplication:[UIApplication sharedApplication]];
+    [sonarpen_driver start];
+    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(penStatusChanged) name:WTSonarPenDriverStateChangedNotification object:nil];
+    sonarpen_started = true;
+}
+
 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
-    //[[BITHockeyManager sharedHockeyManager] configureWithIdentifier:@"c2dccca196294ecca8fd5d58af2738cf"];
+    sonarpen_started = false;
     [MSAppCenter start:@"c2dccca1-9629-4ecc-a8fd-5d58af2738cf" withServices:@[
       [MSAnalytics class],
       [MSCrashes class]
     ]];
-//    sonarpen_driver = [[WTSonarPenDriver alloc] initWithApplication:application];
-//    [sonarpen_driver start];
-//    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(penStatusChanged) name:WTSonarPenDriverStateChangedNotification object:nil];
 
     view = (GameViewController*)self.window.rootViewController;
     return YES;