Improve flow of command-line debugging

src/emulator.rs

@@ -92,6 +92,7 @@ pub struct EmulatorBuilder {
     state: Arc<Atomic<EmulatorState>>,
     audio_on: Arc<[AtomicBool; 2]>,
     linked: Arc<AtomicBool>,
+    start_paused: bool,
 }
 
 impl EmulatorBuilder {
@@ -107,6 +108,7 @@ impl EmulatorBuilder {
             state: Arc::new(Atomic::new(EmulatorState::Paused)),
             audio_on: Arc::new([AtomicBool::new(true), AtomicBool::new(true)]),
             linked: Arc::new(AtomicBool::new(false)),
+            start_paused: false,
         };
         let client = EmulatorClient {
             queue,
@@ -125,6 +127,13 @@ impl EmulatorBuilder {
         }
     }
 
+    pub fn start_paused(self, paused: bool) -> Self {
+        Self {
+            start_paused: paused,
+            ..self
+        }
+    }
+
     pub fn build(self) -> Result<Emulator> {
         let mut emulator = Emulator::new(
             self.commands,
@@ -136,6 +145,9 @@ impl EmulatorBuilder {
         if let Some(path) = self.rom {
             emulator.load_cart(SimId::Player1, &path)?;
         }
+        if self.start_paused {
+            emulator.pause_sims()?;
+        }
         Ok(emulator)
     }
 }