cleanup and small code changes for first code homework

GameProject/src/playground/Level4.java

@@ -38,10 +38,10 @@ public class Level4 extends SpaceInvadersLevel {
 
     if (counter >= MAX_HITS) {
       logger.trace("enemy was hit before for " + counter + " times, which is above "
-          + HitTwiceLevel.MAX_HITS);
+          + LevelHitTwice.MAX_HITS);
       super.actionIfEnemyIsHit(e, shot);
     } else {
-      logger.trace("enemy was hit before for "+counter+" times, which is below "+HitTwiceLevel.MAX_HITS);
+      logger.trace("enemy was hit before for "+counter+" times, which is below "+LevelHitTwice.MAX_HITS);
       e.setObjectFlag("counter", Integer.valueOf(counter + 1));
       // spawn a bonus points object
       double vx = 2 * (Math.random() - 0.5) * SHARDSPEED + e.getVX();

GameProject/src/playground/LevelBoss.java

@@ -37,11 +37,11 @@ public class LevelBoss extends SpaceInvadersLevel {
 
     if (counter >= LevelBoss.MAX_SHOTS) {
       logger.trace("enemy was hit before for " + counter + " times, which is equal or above "
-          + HitTwiceLevel.MAX_HITS);
+          + LevelHitTwice.MAX_HITS);
       super.actionIfEnemyIsHit(e, shot);
     } else {
       logger.trace("enemy was hit before for " + counter + " times, which is below "
-          + HitTwiceLevel.MAX_HITS);
+          + LevelHitTwice.MAX_HITS);
       e.setObjectFlag("counter", Integer.valueOf(counter + 1));
     }
     deleteObject(shot.getId());

GameProject/src/playground/HitTwiceLevel.java → GameProject/src/playground/LevelHitTwice.java

@@ -17,15 +17,15 @@ import org.apache.logging.log4j.Logger;
  */
 
 
-public class HitTwiceLevel extends SpaceInvadersLevel {
+public class LevelHitTwice extends SpaceInvadersLevel {
 
   /** constant defining the number of shots needed to destroy an enemy */
   public static final int MAX_HITS = 2;
   
-  private static Logger logger = LogManager.getLogger(HitTwiceLevel.class);
+  private static Logger logger = LogManager.getLogger(LevelHitTwice.class);
 
   /** constructor setting internal name to 'hitTwice' */
-  public HitTwiceLevel() {
+  public LevelHitTwice() {
     super();
     this.level = "hitTwice";
   }
@@ -59,10 +59,10 @@ public class HitTwiceLevel extends SpaceInvadersLevel {
 
     if (counter >= MAX_HITS) {
       logger.trace("enemy was hit before for " + counter + " times, which is above "
-          + HitTwiceLevel.MAX_HITS);
+          + LevelHitTwice.MAX_HITS);
       super.actionIfEnemyIsHit(e, shot);
     } else {
-      logger.trace("enemy was hit before for "+counter+" times, which is below "+HitTwiceLevel.MAX_HITS);
+      logger.trace("enemy was hit before for "+counter+" times, which is below "+LevelHitTwice.MAX_HITS);
       e.setObjectFlag("counter", Integer.valueOf(counter + 1));
     }
     deleteObject(shot.getId());