update

src/main/java/Snake/Controller.java

@@ -9,6 +9,9 @@ public class Controller {
     private enum GameState { Running };
     private GameView gameView;
     private Snake snakeModel;
+    private SnakeView snakeView;
+    private Apple appleModel;
+    private AppleView appleView;
     private boolean inputHandled;
     private GameState gameState;
 
@@ -25,6 +28,31 @@ public class Controller {
         gameView.getActionMap().put("move down", new MoveAction(Snake.SnakeDirection.DOWN));
         gameView.getActionMap().put("move right", new MoveAction(Snake.SnakeDirection.RIGHT));
     }
+
+    private void selectApplesPosition()
+    {
+        do
+        {
+            appleModel.selectGridPosition(gameView.getGridSize());
+        } while(!isApplePositionIsValid());
+        appleView.setPosition(appleModel.getPosition());
+    }
+    private boolean isApplePositionIsValid()
+    {
+        var snakeSegments = snakeModel.getBodySegments();
+        for(var segmentPosition: snakeSegments)
+        {
+            if(segmentPosition.equals(appleModel.getPosition()))
+                return false;
+        }
+        return true;
+    }
+    private void updateSnakeViewPosition()
+    {
+        snakeView.setPositions(snakeModel.getBodySegments());
+    }
+
+
     private class MoveAction extends AbstractAction
     {