Move levelClock++ to the end, adjust interval checks.

src/de/teamteamteam/spacescooter/entity/LivingEntity.java

@@ -109,8 +109,7 @@ public abstract class LivingEntity extends CollidableEntity implements Hittable
 	 * The default way the LivingEntity explodes. Override this method for a
 	 * different explosion behaviour.
 	 */
-	public void explode() {
-	}
+	public void explode() {}
 
 	/**
 	 * The default way the LivingEntity dies. Override this method for a

src/de/teamteamteam/spacescooter/entity/enemy/Enemy.java

@@ -40,7 +40,7 @@ public abstract class Enemy extends ShootingEntity {
 		if(willShoot == true){
 			this.shoot();
 		}
-		if(this.getX() < 0-getWidth()){
+		if(this.getX() < 0-this.getWidth()) {
 			this.remove();
 		}
 	}

src/de/teamteamteam/spacescooter/entity/enemy/EnemyBossMinion.java

@@ -37,7 +37,6 @@ public class EnemyBossMinion extends Enemy{
 	/**
 	 * Custom MultiExplosion for this enemy.
 	 */
-	@Override
 	public void explode() {
 		new MultiExplosion(this.getX(), this.getY());
 	}
@@ -45,7 +44,7 @@ public class EnemyBossMinion extends Enemy{
 	@Override
 	public void update() {
 		super.update();
-		this.setPosition(this.getX()-1, this.getY());
+		this.transpose(-1, 0);
 		Player player = GameScreen.getPlayer();
 		if(this.getY() < player.getY()){
 			this.newY += ySpeed;

src/de/teamteamteam/spacescooter/level/Level.java

@@ -74,8 +74,6 @@ public final class Level {
 		if (Keyboard.isKeyDown(KeyEvent.VK_0)) {
 			new EnemyBoss(400,400);
 		}
-		//Increase levelClock
-		this.levelClock++;
 		//Check whether the current interval is configured
 		int currentIntervalIndex = this.config.getIntervalIndexByCurrentTime(this.levelClock);
 		if(currentIntervalIndex == -1) return; //Nothing to do
@@ -105,6 +103,8 @@ public final class Level {
 				}
 			}
 		}
+		//Increase levelClock
+		this.levelClock++;
 	}
 	
 	/**

src/de/teamteamteam/spacescooter/level/LevelConfig.java

@@ -93,7 +93,7 @@ public class LevelConfig {
 	 */
 	public int getIntervalIndexByCurrentTime(int time) {
 		for(int[] interval : this.intervalList) {
-			if(interval[0] <= time && interval[1] >= time) {
+			if(time >= interval[0] && time < interval[1]) {
 				return this.intervalList.indexOf(interval);
 			}
 		}