Boats bounce away from marks.

- Changed onCollisionEnter signature to pass boat info

#story[1100]

racevisionGame/src/main/java/shared/model/Boat.java

@@ -400,6 +400,6 @@ public class Boat extends Collider {
     }
 
     @Override
-    public void onCollisionEnter(Collision e) {
+    public void onCollisionEnter(Boat collider, Collision e) {
     }
 }

racevisionGame/src/main/java/shared/model/Mark.java

@@ -24,6 +24,10 @@ public class Mark extends Collider {
      */
     private GPSCoordinate position;
 
+    /**
+     * Repulsion radius of the mark
+     */
+    private double repulsionRadius = 50;
 
     /**
      * Constructs a mark with a given source ID, name, and position.
@@ -81,10 +85,12 @@ public class Mark extends Collider {
 
     @Override
     public boolean rayCast(Boat boat) {
-        return rayCast(boat, 100);
+        return rayCast(boat, repulsionRadius);
     }
 
     @Override
-    public void onCollisionEnter(Collision e) {
+    public void onCollisionEnter(Boat collider, Collision e) {
+        Azimuth reverseAzimuth = Azimuth.fromDegrees(collider.getBearing().degrees() - 180d);
+        collider.setPosition(GPSCoordinate.calculateNewPosition(collider.getPosition(), 2 * repulsionRadius, reverseAzimuth));
     }
 }