src/main/java/ch/zhaw/pm2/racetrack/Game.java

@@ -82,8 +82,7 @@ public class Game implements GameSpecification {
      */
     @Override
     public int getCurrentCarIndex() {
-        // TODO: implementation
-        throw new UnsupportedOperationException();
+        return currentCarIndex;
     }
 
     /**
@@ -163,8 +162,12 @@ public class Game implements GameSpecification {
      */
     @Override
     public void switchToNextActiveCar() {
-        // TODO: implementation
-        throw new UnsupportedOperationException();
+        do {
+            if (currentCarIndex++ > track.getCarCount()) {
+                currentCarIndex = 0;
+            }
+        } while (track.getCar(currentCarIndex).isCrashed());
+        // TODO: evtl andere Kapselung
     }
 
     /**
@@ -181,7 +184,7 @@ public class Game implements GameSpecification {
      */
     @Override
     public List<PositionVector> calculatePath(PositionVector startPosition, PositionVector endPosition) {
-        ArrayList pathList = new ArrayList<PositionVector>();
+        ArrayList<PositionVector> pathList = new ArrayList<>();
         // Use Bresenham's algorithm to determine positions.
         int x = startPosition.getX();
         int y = startPosition.getY();
@@ -246,7 +249,13 @@ public class Game implements GameSpecification {
     @Override
     public boolean willCarCrash(int carIndex, PositionVector position) {
 
+        List<PositionVector> positionList  = calculatePath(track.getCarPos(carIndex),position);
+        for(PositionVector location : positionList) {
+            if(track.willCrashAtPosition(location)) {
+                return true;
+            }
+        }
+        return false;
 
-        return true;
     }
 }