Modularized existing vessel systems into separate modules (AIS, GPS, Radar) and restructured the project for improved maintainability. Updated references and documentation accordingly.

crates/systems/src/gps/gps_system.rs

@@ -0,0 +1,86 @@
+use bevy::prelude::Time;
+use components::VesselData;
+use crate::{SystemInteraction, SystemStatus, VesselSystem};
+
+/// GPS Navigation System implementation
+pub struct GpsSystem {
+    status: SystemStatus,
+    satellites_connected: u8,
+    hdop: f32,
+}
+
+impl GpsSystem {
+    pub fn new() -> Self {
+        Self {
+            status: SystemStatus::Active,
+            satellites_connected: 12,
+            hdop: 0.8,
+        }
+    }
+}
+
+impl VesselSystem for GpsSystem {
+    fn id(&self) -> &'static str {
+        "gps"
+    }
+
+    fn display_name(&self) -> &'static str {
+        "GPS Navigation"
+    }
+
+    fn update(&mut self, _yacht_data: &VesselData, time: &Time) {
+        // Simulate satellite connection variations
+        let t = time.elapsed_secs();
+        self.satellites_connected = (12.0 + (t * 0.1).sin() * 2.0).max(8.0) as u8;
+        self.hdop = 0.8 + (t * 0.05).sin() * 0.2;
+    }
+
+    fn render_display(&self, yacht_data: &VesselData) -> String {
+        format!(
+            "GPS NAVIGATION SYSTEM\n\n\
+            Position: 43°38'19.5\"N 1°26'58.3\"W\n\
+            Heading: {:.0}°\n\
+            Speed: {:.1} knots\n\
+            Course Over Ground: {:.0}°\n\
+            Satellites: {} connected\n\
+            HDOP: {:.1} ({})\n\
+            \n\
+            Next Waypoint: MONACO HARBOR\n\
+            Distance: 127.3 NM\n\
+            ETA: 10h 12m",
+            yacht_data.heading,
+            yacht_data.speed,
+            yacht_data.heading + 5.0,
+            self.satellites_connected,
+            self.hdop,
+            if self.hdop < 1.0 { "Excellent" } else if self.hdop < 2.0 { "Good" } else { "Fair" }
+        )
+    }
+
+    fn handle_interaction(&mut self, interaction: SystemInteraction) -> bool {
+        match interaction {
+            SystemInteraction::Select => {
+                self.status = SystemStatus::Active;
+                true
+            }
+            SystemInteraction::Reset => {
+                self.satellites_connected = 12;
+                self.hdop = 0.8;
+                true
+            }
+            SystemInteraction::Toggle => {
+                self.status = match self.status {
+                    SystemStatus::Active => SystemStatus::Inactive,
+                    SystemStatus::Inactive => SystemStatus::Active,
+                    _ => SystemStatus::Active,
+                };
+                true
+            }
+            _ => false,
+        }
+    }
+
+    fn status(&self) -> SystemStatus {
+        self.status.clone()
+    }
+}

crates/systems/src/gps/mod.rs

@@ -0,0 +1 @@
+pub mod gps_system;