initial routines added for navigateRoute

Vehicle.java

@@ -1,10 +1,21 @@
-public class Vehicle {
+import java.util.concurrent.*; 
+
+public class Vehicle implements Runnable{
     private int currentSpeed;
     private int targetSpeed;
     private double fuelLevel;
-    private int routeProgress;
+    private int distanceRemaining;
     Route currentRoute;
 
+    public void run() {
+        navigateRoute();
+    }
+
+    public Vehicle() {
+        fuelLevel = getFuelLevel();
+        currentSpeed = 0;
+    }
+
     public void setTargetSpeed(int newSpeed) {targetSpeed = newSpeed;}
     public int getCurrentSpeed() {return currentSpeed;}
     public double getFuelLevel() {return fuelLevel;}
@@ -14,9 +25,27 @@ public class Vehicle {
     }
 
     public void navigateRoute() {
+        System.out.println("Start navigation");
+        
         for (String[] el : currentRoute.getSelectedRouteSteps()) {
-            System.out.println("Start navigation");
+            boolean turnCompleted = false; //flag to validate completion of moveset instruction
+            targetSpeed = Integer.parseInt(el[2]);
+            while (!turnCompleted) {
+                if (currentSpeed < 15 || el[0] == "STRAIGHT") {
+                    changeDirection(el[0]);
+                    turnCompleted = true;
+                } else {
+                    applyBrakes();
+                }
+            }
 
+            while (distanceRemaining > 0.2) {
+                System.out.println(distanceRemaining + " to next instruction");
+                distanceRemaining -= (currentSpeed/3600); //travel distance in one second
+                controlThrottle();
+                try {TimeUnit.MINUTES.sleep(1);} //sleep action for 1 second to simulate continuous movement
+                catch (InterruptedException e) {System.err.println("Sleep interrupted");}
+            }
         }
     }
 
@@ -34,9 +63,18 @@ public class Vehicle {
         }
     }
 
-    public void applyBrakes() {
-        if (currentSpeed >= 5) {currentSpeed = currentSpeed - 5;}
-        else if (currentSpeed < 5) {currentSpeed = 0;}
+    public void controlThrottle() {
+        if (currentSpeed < targetSpeed && (targetSpeed - currentSpeed) > 6) { //normal acceleration
+            currentSpeed += 6;
+        } else if (currentSpeed < targetSpeed && (targetSpeed - currentSpeed) < 6) { //partial acceleration to reach speed limit
+            currentSpeed += (currentSpeed - targetSpeed);
+        } else if (currentSpeed > targetSpeed) { //deceleration by coasting
+            currentSpeed -= 1;
+        }
     }
 
+    public void applyBrakes() {
+        if (currentSpeed >= 10) {currentSpeed -= 10;}
+        else if (currentSpeed < 10) {currentSpeed = 0;}
+    }
 }