more error messages (#836)

src/cheats.rs

@@ -48,7 +48,7 @@ pub fn init(
                 {
                     option_value = Some(found_option_value.to_string());
                 } else {
-                    println!("Cheat option: {option} not found");
+                    eprintln!("Cheat option: {option} not found");
                     continue;
                 }
             }

src/savestates.rs

@@ -92,6 +92,8 @@ pub fn create_savestate(device: &device::Device) {
                 eprintln!("Error writing savestate: {}", e);
             }
         });
+    } else {
+        eprintln!("Error compressing savestate");
     }
     ui::video::onscreen_message(
         &format!(

src/ui/gui.rs

@@ -41,6 +41,7 @@ fn check_latest_version(weak: slint::Weak<AppWindow>) {
             {
                 github_version
             } else {
+                eprintln!("Error getting latest version from GitHub");
                 semver::Version::parse(env!("CARGO_PKG_VERSION")).unwrap()
             };
             let current_version = semver::Version::parse(env!("CARGO_PKG_VERSION")).unwrap();

src/ui/input.rs

@@ -463,6 +463,7 @@ pub fn get(ui: &mut ui::Ui, channel: usize) -> InputData {
 
     let profile_name = &ui.config.input.input_profile_binding[channel];
     let Some(profile) = ui.config.input.input_profiles.get(profile_name) else {
+        eprintln!("Invalid profile name: {profile_name}");
         return InputData {
             data: 0,
             pak_change_pressed: false,
@@ -546,6 +547,8 @@ pub fn assign_controller(ui: &mut ui::Ui, controller: i32, port: usize) {
         if !path.is_null() {
             ui.config.input.controller_assignment[port - 1] =
                 Some(unsafe { std::ffi::CStr::from_ptr(path).to_str().unwrap().to_string() });
+        } else {
+            eprintln!("Invalid controller path for controller {controller}");
         }
     } else {
         eprintln!("Invalid controller number")

src/ui/netplay.rs

@@ -141,6 +141,8 @@ fn populate_server_names<T: ComponentHandle + NetplayPages + 'static>(weak: slin
                     local_servers.push((server.0.into(), server.1.into()));
                 }
             }
+        } else {
+            eprintln!("Error creating netplay broadcast socket");
         }
 
         let response = task.await;