RaceController can now set up collision listeners on each boat.

#story[1195]

racevisionGame/src/main/java/visualiser/Controllers/RaceController.java

@@ -311,6 +311,7 @@ public class RaceController extends Controller {
             }
 
             boat.legProperty().addListener((o, prev, curr) -> swapColours(curr));
+            boat.hasCollidedProperty().addListener((o, prev, curr) -> showCollision(boat));
         }
         // Fix initial bird's-eye position
         view3D.updatePivot(new Translate(250, 0, 210));
@@ -368,6 +369,10 @@ public class RaceController extends Controller {
         });
     }
 
+    private void showCollision(VisualiserBoat boat) {
+        System.out.println(boat.getSourceID() + " has collided");
+    }
+
     private void addThirdPersonAnnotations(Subject3D subject3D) {
         viewSubjects.add(nextMarkArrow);