diff --git a/res/levels/test.level b/res/levels/test.level
index 2d2d832..c22ddb7 100644
--- a/res/levels/test.level
+++ b/res/levels/test.level
@@ -6,13 +6,6 @@ background:CloudBackground
 spawn:EnemyBoss,1,1,50
 [1-2]
 spawn:StoneOne,2,1,0
-spawn:StoneOne,2,1,10
-spawn:StoneTwo,2,1,20
-spawn:StoneOne,2,1,30
-spawn:StoneTwo,2,1,40
-spawn:EnemyOne,2,1,50
-spawn:StoneOne,2,1,60
-spawn:StoneThree,2,1,70
 spawn:StoneOne,2,1,80
 spawn:StoneThree,2,1,90
 spawn:StoneThree,2,1,100
diff --git a/src/de/teamteamteam/spacescooter/GameFrame.java b/src/de/teamteamteam/spacescooter/GameFrame.java
index fa2973d..bf4f8f2 100644
--- a/src/de/teamteamteam/spacescooter/GameFrame.java
+++ b/src/de/teamteamteam/spacescooter/GameFrame.java
@@ -148,8 +148,8 @@ public class GameFrame extends JFrame {
 						bufferedGraphics.dispose();
 				}
 			} while (this.bufferStrategy.contentsRestored()); //Redraw in case the VolatileImage was restored
-			this.bufferStrategy.show(); //Show the drawn image
 		} while (this.bufferStrategy.contentsLost()); //Redraw in case the VolatileImage got lost
+		this.bufferStrategy.show(); //Show the drawn image
 		Toolkit.getDefaultToolkit().sync(); //Tell the OS to update its graphics of the window.
 		this.frameTime = System.nanoTime() - frameStart; //Update frameTime
 	}
diff --git a/src/de/teamteamteam/spacescooter/control/Keyboard.java b/src/de/teamteamteam/spacescooter/control/Keyboard.java
index 104a756..dcb3bc2 100644
--- a/src/de/teamteamteam/spacescooter/control/Keyboard.java
+++ b/src/de/teamteamteam/spacescooter/control/Keyboard.java
@@ -11,6 +11,7 @@ import de.teamteamteam.spacescooter.entity.enemy.EnemyOne;
 import de.teamteamteam.spacescooter.entity.enemy.EnemyThree;
 import de.teamteamteam.spacescooter.entity.enemy.EnemyTwo;
 import de.teamteamteam.spacescooter.entity.item.ItemNuke;
+import de.teamteamteam.spacescooter.screen.GameScreen;
 
 /**
  * This is our main control input source.
@@ -126,6 +127,9 @@ public class Keyboard implements KeyListener {
 		if(e.getKeyCode() == KeyEvent.VK_0) {
 			new EnemyBoss(400,400);
 		}
+		if(e.getKeyCode() == KeyEvent.VK_5) {
+			GameScreen.getPlayer().setCollide(!GameScreen.getPlayer().canCollide());
+		}
 		
 	}
 
diff --git a/src/de/teamteamteam/spacescooter/entity/CollidableEntity.java b/src/de/teamteamteam/spacescooter/entity/CollidableEntity.java
index 9fb7712..761780f 100644
--- a/src/de/teamteamteam/spacescooter/entity/CollidableEntity.java
+++ b/src/de/teamteamteam/spacescooter/entity/CollidableEntity.java
@@ -1,5 +1,9 @@
 package de.teamteamteam.spacescooter.entity;
 
+import java.awt.Color;
+import java.awt.Graphics2D;
+
+import de.teamteamteam.spacescooter.brain.GameConfig;
 import de.teamteamteam.spacescooter.entity.spi.Collidable;
 
 /**
@@ -22,6 +26,16 @@ public abstract class CollidableEntity extends Entity implements Collidable {
 	 */
 	private boolean damaging;
 	
+	/**
+	 * Height of the hitbox.
+	 */
+	private int hitboxHeight;
+	
+	/**
+	 * Width of the hitbox.
+	 */
+	private int hitboxWidth;
+	
 	
 	/**
 	 * Default constructor. Initializes sane defaults.
@@ -32,6 +46,78 @@ public abstract class CollidableEntity extends Entity implements Collidable {
 		this.setDamaging(true);
 	}
 	
+	/**
+	 * Get X-Position of the Collidable.
+	 */
+	public int getHitboxX() {
+		return this.getCenteredX() - (this.hitboxWidth / 2);
+	}
+
+	/**
+	 * Get Y-Position of the Collidable.
+	 */
+	public int getHitboxY() {
+		return this.getCenteredY() - (this.hitboxHeight / 2);
+	}
+	
+	/**
+	 * Get the width of the Collidable.
+	 */
+	public int getHitboxWidth() {
+		return this.hitboxWidth;
+	}
+
+	/**
+	 * Set the width of the Collidable.
+	 */
+	public void setHitboxWidth(int hitboxWidth) {
+		this.hitboxWidth = hitboxWidth;
+	}
+	
+	/**
+	 * Get the height of the Collidable.
+	 */
+	public int getHitboxHeight() {
+		return this.hitboxHeight;
+	}
+	
+	/**
+	 * Set the height of the Collidable.
+	 */
+	public void setHitboxHeight(int hitboxHeight) {
+		this.hitboxHeight = hitboxHeight;
+	}
+	
+	/**
+	 * Set the dimensions of the CollidableEntities hitbox.
+	 */
+	public void setHitboxDimenstions(int width, int height) {
+		this.hitboxWidth = width;
+		this.hitboxHeight = height;
+	}
+	
+	/**
+	 * Overriding the Entities setImageDimension to (ab)use their width/height
+	 * for reuse in the hitbox.
+	 */
+	@Override
+	public void setImageDimensions(int width, int height) {
+		super.setImageDimensions(width, height);
+		this.hitboxWidth = this.getImageWidth();
+		this.hitboxHeight = this.getImageHeight();
+	}
+	
+	/**
+	 * Adding a debugging option to draw the hitbox in red.
+	 */
+	@Override
+	public void paint(Graphics2D g) {
+		super.paint(g);
+		if(GameConfig.DEBUG) {
+			g.setColor(new Color(255,0,0));
+			g.drawRect(this.getHitboxX(), this.getHitboxY(), this.hitboxWidth, this.hitboxHeight);
+		}
+	}
 	
 	/**
 	 * Handle collisions based on what the LivingEntity collided with.
diff --git a/src/de/teamteamteam/spacescooter/entity/Entity.java b/src/de/teamteamteam/spacescooter/entity/Entity.java
index 75f2fa0..1073d79 100644
--- a/src/de/teamteamteam/spacescooter/entity/Entity.java
+++ b/src/de/teamteamteam/spacescooter/entity/Entity.java
@@ -53,12 +53,12 @@ public abstract class Entity implements Updateable, Paintable {
 	/**
 	 * Entity width.
 	 */
-	private int width;
+	private int imageWidth;
 	
 	/**
 	 * Entity height.
 	 */
-	private int height;
+	private int imageHeight;
 	
 	/**
 	 * Whether or not the Entity is able to move using transpose.
@@ -106,14 +106,14 @@ public abstract class Entity implements Updateable, Paintable {
 	 * Get the centered X-Position of the Entity.
 	 */
 	public int getCenteredX() {
-		return this.x + (this.width / 2);
+		return this.x + (this.imageWidth / 2);
 	}
 
 	/**
 	 * Get the centered Y-Position of the Entity.
 	 */
 	public int getCenteredY() {
-		return this.y + (this.height / 2);
+		return this.y + (this.imageHeight / 2);
 	}
 	
 	/**
@@ -138,23 +138,23 @@ public abstract class Entity implements Updateable, Paintable {
 	/**
 	 * Get the Entities width.
 	 */
-	public int getWidth() {
-		return this.width;
+	public int getImageWidth() {
+		return this.imageWidth;
 	}
 	
 	/**
 	 * Get the Entities height.
 	 */
-	public int getHeight() {
-		return this.height;
+	public int getImageHeight() {
+		return this.imageHeight;
 	}
 
 	/**
 	 * Set the entities width and height.
 	 */
-	public void setDimensions(int width, int height) {
-		this.width = width;
-		this.height = height;
+	public void setImageDimensions(int width, int height) {
+		this.imageWidth = width;
+		this.imageHeight = height;
 	}
 	
 	/**
@@ -170,7 +170,7 @@ public abstract class Entity implements Updateable, Paintable {
 	public void setImage(String filename) {
 		this.img = Loader.getBufferedImageByFilename(filename);
 		//set the entities dimensions using the dimensions of the image.
-		this.setDimensions(this.img.getWidth(), this.img.getHeight());
+		this.setImageDimensions(this.img.getWidth(), this.img.getHeight());
 	}
 	
 	/**
@@ -190,11 +190,12 @@ public abstract class Entity implements Updateable, Paintable {
 	/**
 	 * The default way to paint the Entity.
 	 * Simply draw the Entities image on its current position.
+	 * Debugging option: draw the image border in green.
 	 */
 	public void paint(Graphics2D g) {
 		if(GameConfig.DEBUG) {
-			g.setColor(new Color(255,0,0));
-			g.drawRect(this.x, this.y, this.width, this.height);
+			g.setColor(new Color(0,255,0));
+			g.drawRect(this.x, this.y, this.imageWidth, this.imageHeight);
 		}
 		g.drawImage(this.img, this.x, this.y, null);
 	}
diff --git a/src/de/teamteamteam/spacescooter/entity/LivingEntity.java b/src/de/teamteamteam/spacescooter/entity/LivingEntity.java
index 048cf4b..7d0b3fd 100644
--- a/src/de/teamteamteam/spacescooter/entity/LivingEntity.java
+++ b/src/de/teamteamteam/spacescooter/entity/LivingEntity.java
@@ -104,7 +104,7 @@ public abstract class LivingEntity extends CollidableEntity implements Hittable
 			return;
 		if (this.shieldPoints > 0) {
 			if (this.shieldPoints < damage) {
-				this.healthPoints = (damage - this.shieldPoints);
+				this.healthPoints -= (damage - this.shieldPoints);
 				this.shieldPoints = 0;
 			} else {
 				this.shieldPoints -= damage;
diff --git a/src/de/teamteamteam/spacescooter/entity/Player.java b/src/de/teamteamteam/spacescooter/entity/Player.java
index c650fcd..721ca0f 100644
--- a/src/de/teamteamteam/spacescooter/entity/Player.java
+++ b/src/de/teamteamteam/spacescooter/entity/Player.java
@@ -128,7 +128,7 @@ public class Player extends ShootingEntity implements KeyboardListener {
 	public void paint(Graphics2D g) {
 		if(this.currentCollisionCooldown > 0) {
 			g.setColor(Color.RED);
-			g.drawRect(this.getX(), this.getY(), this.getWidth(), this.getHeight());
+			g.drawRect(this.getX(), this.getY(), this.getImageWidth(), this.getImageHeight());
 		}
 		super.paint(g);
 	}
diff --git a/src/de/teamteamteam/spacescooter/entity/enemy/Enemy.java b/src/de/teamteamteam/spacescooter/entity/enemy/Enemy.java
index cc23a19..39c5dc2 100644
--- a/src/de/teamteamteam/spacescooter/entity/enemy/Enemy.java
+++ b/src/de/teamteamteam/spacescooter/entity/enemy/Enemy.java
@@ -42,7 +42,7 @@ public abstract class Enemy extends ShootingEntity {
 		super.update();
 		
 		// enemy has fully left the screen ..to the left!
-		if(this.getX() + this.getWidth() < 0){
+		if(this.getX() + this.getImageWidth() < 0){
 			this.remove();
 			return;
 		}
diff --git a/src/de/teamteamteam/spacescooter/entity/enemy/EnemyBoss.java b/src/de/teamteamteam/spacescooter/entity/enemy/EnemyBoss.java
index b4ea41b..af231d1 100644
--- a/src/de/teamteamteam/spacescooter/entity/enemy/EnemyBoss.java
+++ b/src/de/teamteamteam/spacescooter/entity/enemy/EnemyBoss.java
@@ -44,7 +44,7 @@ public class EnemyBoss extends Enemy{
 	public void update() {
 		super.update();
 		//Move into the Screen until it fits on X-Axis
-		if(this.getX() > GameConfig.gameScreenWidth+GameConfig.gameScreenXOffset-this.getWidth()) {
+		if(this.getX() > GameConfig.gameScreenWidth+GameConfig.gameScreenXOffset-this.getImageWidth()) {
 			this.transpose(-1, 0);
 		}
 		//Move up or down within the GameScreen.
@@ -52,12 +52,12 @@ public class EnemyBoss extends Enemy{
 		if(this.getY() == GameConfig.gameScreenYOffset){
 			move = 1;
 		}
-		if(this.getY() == GameConfig.gameScreenHeight + GameConfig.gameScreenYOffset - this.getHeight()){
+		if(this.getY() == GameConfig.gameScreenHeight + GameConfig.gameScreenYOffset - this.getImageHeight()){
 			move = -1;
 		}
 		//Randomly spawn minions.
 		if(Random.nextInt(1000) < 5) {
-			new EnemyBossMinion(GameConfig.gameScreenWidth  +GameConfig.gameScreenXOffset - this.getWidth(), this.getY());
+			new EnemyBossMinion(GameConfig.gameScreenWidth  +GameConfig.gameScreenXOffset - this.getImageWidth(), this.getY());
 		}
 		//Randomly fire doubleshots.
 		if(Random.nextInt(1000) < 50) {
diff --git a/src/de/teamteamteam/spacescooter/entity/explosion/ExplosionOne.java b/src/de/teamteamteam/spacescooter/entity/explosion/ExplosionOne.java
index 11619af..4f27df7 100644
--- a/src/de/teamteamteam/spacescooter/entity/explosion/ExplosionOne.java
+++ b/src/de/teamteamteam/spacescooter/entity/explosion/ExplosionOne.java
@@ -17,7 +17,7 @@ public class ExplosionOne extends Animation {
 			"images/explosions/01/explosion7.png"
 		};
 		this.configure(images, 10);
-		this.setPosition(x - (this.getWidth()/2), y - (this.getHeight()/2));
+		this.setPosition(x - (this.getImageWidth()/2), y - (this.getImageHeight()/2));
 		SoundSystem.playSound("sounds/bad_explosion1.wav");
 	}
 }
diff --git a/src/de/teamteamteam/spacescooter/entity/explosion/ExplosionTwo.java b/src/de/teamteamteam/spacescooter/entity/explosion/ExplosionTwo.java
index 7ca3797..48348ce 100644
--- a/src/de/teamteamteam/spacescooter/entity/explosion/ExplosionTwo.java
+++ b/src/de/teamteamteam/spacescooter/entity/explosion/ExplosionTwo.java
@@ -26,7 +26,7 @@ public class ExplosionTwo extends Animation {
 			"images/explosions/02/explosion2_16.png"
 		};
 		this.configure(images, 10);
-		this.setPosition(x - (this.getWidth()/2), y - (this.getHeight()/2));
+		this.setPosition(x - (this.getImageWidth()/2), y - (this.getImageHeight()/2));
 		SoundSystem.playSound("sounds/bad_explosion2.wav");
 	}
 
diff --git a/src/de/teamteamteam/spacescooter/entity/item/Item.java b/src/de/teamteamteam/spacescooter/entity/item/Item.java
index ced3250..88020c2 100644
--- a/src/de/teamteamteam/spacescooter/entity/item/Item.java
+++ b/src/de/teamteamteam/spacescooter/entity/item/Item.java
@@ -38,7 +38,7 @@ public abstract class Item extends CollidableEntity {
 	 */
 	public void update(){
 		this.transpose(-1, 0);
-		if(this.getX() < this.getWidth()) {
+		if(this.getX() < this.getImageWidth()) {
 			this.remove();
 		}
 	}
diff --git a/src/de/teamteamteam/spacescooter/entity/obstacle/StoneOne.java b/src/de/teamteamteam/spacescooter/entity/obstacle/StoneOne.java
index 034be47..8c504f1 100644
--- a/src/de/teamteamteam/spacescooter/entity/obstacle/StoneOne.java
+++ b/src/de/teamteamteam/spacescooter/entity/obstacle/StoneOne.java
@@ -9,6 +9,7 @@ public class StoneOne extends MovingObstacle {
 		super(x, y);
 		this.setImage("images/stones/stone01.png");
 		this.setCollisionDamage(9001);
+		this.setHitboxDimenstions(this.getImageWidth() - 5, this.getImageHeight() - 5);
 	}
 
 }
diff --git a/src/de/teamteamteam/spacescooter/entity/obstacle/StoneThree.java b/src/de/teamteamteam/spacescooter/entity/obstacle/StoneThree.java
index f1b92b4..992bd6b 100644
--- a/src/de/teamteamteam/spacescooter/entity/obstacle/StoneThree.java
+++ b/src/de/teamteamteam/spacescooter/entity/obstacle/StoneThree.java
@@ -9,6 +9,7 @@ public class StoneThree extends MovingObstacle {
 		super(x, y);
 		this.setImage("images/stones/stone03.png");
 		this.setCollisionDamage(9001);
+		this.setHitboxDimenstions(this.getImageWidth() - 5, this.getImageHeight() - 5);
 	}
 
 }
diff --git a/src/de/teamteamteam/spacescooter/entity/obstacle/StoneTwo.java b/src/de/teamteamteam/spacescooter/entity/obstacle/StoneTwo.java
index 8392b9d..f9bf4ee 100644
--- a/src/de/teamteamteam/spacescooter/entity/obstacle/StoneTwo.java
+++ b/src/de/teamteamteam/spacescooter/entity/obstacle/StoneTwo.java
@@ -9,6 +9,7 @@ public class StoneTwo extends MovingObstacle {
 		super(x, y);
 		this.setImage("images/stones/stone02.png");
 		this.setCollisionDamage(9001);
+		this.setHitboxDimenstions(this.getImageWidth() - 5, this.getImageHeight() - 5);
 	}
 
 }
diff --git a/src/de/teamteamteam/spacescooter/entity/shot/BeamImage.java b/src/de/teamteamteam/spacescooter/entity/shot/BeamImage.java
index 802600b..ad1015f 100644
--- a/src/de/teamteamteam/spacescooter/entity/shot/BeamImage.java
+++ b/src/de/teamteamteam/spacescooter/entity/shot/BeamImage.java
@@ -15,7 +15,6 @@ public class BeamImage extends Entity {
 		this.setImage("images/shots/beam.png");
 	}
 
-	@Override
 	public void update() {
 		this.lifetime++;
 		if(this.lifetime>30){
diff --git a/src/de/teamteamteam/spacescooter/entity/shot/Shot.java b/src/de/teamteamteam/spacescooter/entity/shot/Shot.java
index 1085e76..a32e20f 100644
--- a/src/de/teamteamteam/spacescooter/entity/shot/Shot.java
+++ b/src/de/teamteamteam/spacescooter/entity/shot/Shot.java
@@ -90,8 +90,8 @@ public class Shot extends CollidableEntity {
 	public void update() {
 		this.transpose(this.direction * this.speed, 0);
 		//remove the shot in case it is out of the game window.
-		if ((this.getX() + this.getWidth()) < 0 || this.getX() > GameConfig.windowWidth
-				|| (this.getY() + this.getHeight()) < 0
+		if ((this.getX() + this.getImageWidth()) < 0 || this.getX() > GameConfig.windowWidth
+				|| (this.getY() + this.getImageHeight()) < 0
 				|| this.getY() > GameConfig.windowHeight) {
 			this.remove();
 		}
diff --git a/src/de/teamteamteam/spacescooter/entity/spi/Collidable.java b/src/de/teamteamteam/spacescooter/entity/spi/Collidable.java
index 45202d5..2bad3b5 100644
--- a/src/de/teamteamteam/spacescooter/entity/spi/Collidable.java
+++ b/src/de/teamteamteam/spacescooter/entity/spi/Collidable.java
@@ -8,22 +8,32 @@ public interface Collidable {
 	/**
 	 * Get X-Position of the Collidable.
 	 */
-	public int getX();
-
+	public int getHitboxX();
+	
 	/**
 	 * Get Y-Position of the Collidable.
 	 */
-	public int getY();
+	public int getHitboxY();
 	
 	/**
 	 * Get the width of the Collidable.
 	 */
-	public int getWidth();
-
+	public int getHitboxWidth();
+	
+	/**
+	 * Set the width of the Collidable.
+	 */
+	public void setHitboxWidth(int hitboxWidth);
+	
 	/**
 	 * Get the height of the Collidable.
 	 */
-	public int getHeight();
+	public int getHitboxHeight();
+
+	/**
+	 * Set the height of the Collidable.
+	 */
+	public void setHitboxHeight(int hitboxHeight);
 	
 	/**
 	 * Notify the Collidable that a collision happened.
diff --git a/src/de/teamteamteam/spacescooter/gui/SecondaryWeaponAmount.java b/src/de/teamteamteam/spacescooter/gui/SecondaryWeaponAmount.java
index c6c6c9a..ba939f2 100644
--- a/src/de/teamteamteam/spacescooter/gui/SecondaryWeaponAmount.java
+++ b/src/de/teamteamteam/spacescooter/gui/SecondaryWeaponAmount.java
@@ -30,7 +30,6 @@ public class SecondaryWeaponAmount extends Entity{
 		}
 	}
 	
-	@Override
 	public void update() {}
 
 }
diff --git a/src/de/teamteamteam/spacescooter/level/Level.java b/src/de/teamteamteam/spacescooter/level/Level.java
index 0509123..9c67e9b 100644
--- a/src/de/teamteamteam/spacescooter/level/Level.java
+++ b/src/de/teamteamteam/spacescooter/level/Level.java
@@ -84,37 +84,40 @@ public final class Level {
 	public void handleUpdateTick() {
 		//Check whether the current interval is configured
 		int currentIntervalIndex = this.config.getIntervalIndexByCurrentTime(this.levelClock);
-		if(currentIntervalIndex == -1) return; //Nothing to do
-		//Fetch the current interval
-		int[] currentInterval = this.config.intervalList.get(currentIntervalIndex);
-		int relativeTimeWithinCurrentInterval = this.levelClock - currentInterval[0];
-		int intervalLength = currentInterval[1] - currentInterval[0];
-		/*
-		 * @see <LevelConfig>
-		 * Get all the spawnrules for the current interval.
-		 * - 0: Interval this rule belongs to
-		 * - 1: EntityNumber - This helps to find out what Entity to actually spawn.
-		 * - 2: Amount - The amount of Entities to spawn at a time.
-		 * - 3: SpawnRate - The rate at which the Entities are supposed to be spawned.
-		 * - 4: SpawnPosition - percentage of GameConfig.windowHeight - Where the Enemy shall spawn.
-		 */
-		for(int[] spawnRule : this.config.spawnRuleList) {
-			//Skip spawn rules that are not in the current spawn interval.
-			if(spawnRule[0] != currentIntervalIndex) continue;
-			//Divide the current interval by spawnrate
-			int intervalModulus = intervalLength / spawnRule[3];
-			//Check whether the spawn rate strikes right now.
-			if(relativeTimeWithinCurrentInterval % Math.max(1,intervalModulus) == 0) {
-				//If the rule matches the current time, spawn the configured Entity in the configured amount:
-				for(int i=0; i<spawnRule[2]; i++) {
-					//Minus one because the upper border is _excluded_ from the range!
-					int x = GameConfig.gameScreenWidth + GameConfig.gameScreenXOffset - 1;
-					//Minus one because the upper border is _excluded_ from the range!
-					int y = Math.round((GameConfig.gameScreenHeight * spawnRule[4]) / 100) + GameConfig.gameScreenYOffset - 1;
-					this.spawnEntityByAvailableName(Entity.availableNames.values()[spawnRule[1]], x, y);
+		
+		//If there are still configured intervals, take care of the rules
+		if(currentIntervalIndex != -1) {
+			//Fetch the current interval
+			int[] currentInterval = this.config.intervalList.get(currentIntervalIndex);
+			int relativeTimeWithinCurrentInterval = this.levelClock - currentInterval[0];
+			int intervalLength = currentInterval[1] - currentInterval[0];
+			/*
+			 * @see <LevelConfig>
+			 * Get all the spawnrules for the current interval.
+			 * - 0: Interval this rule belongs to
+			 * - 1: EntityNumber - This helps to find out what Entity to actually spawn.
+			 * - 2: Amount - The amount of Entities to spawn at a time.
+			 * - 3: SpawnRate - The rate at which the Entities are supposed to be spawned.
+			 * - 4: SpawnPosition - percentage of GameConfig.windowHeight - Where the Enemy shall spawn.
+			 */
+			for(int[] spawnRule : this.config.spawnRuleList) {
+				//Skip spawn rules that are not in the current spawn interval.
+				if(spawnRule[0] != currentIntervalIndex) continue;
+				//Divide the current interval by spawnrate
+				int intervalModulus = intervalLength / spawnRule[3];
+				//Check whether the spawn rate strikes right now.
+				if(relativeTimeWithinCurrentInterval % Math.max(1,intervalModulus) == 0) {
+					//If the rule matches the current time, spawn the configured Entity in the configured amount:
+					for(int i=0; i<spawnRule[2]; i++) {
+						//Minus one because the upper border is _excluded_ from the range!
+						int x = GameConfig.gameScreenWidth + GameConfig.gameScreenXOffset - 1;
+						//Minus one because the upper border is _excluded_ from the range!
+						int y = Math.round((GameConfig.gameScreenHeight * spawnRule[4]) / 100) + GameConfig.gameScreenYOffset - 1;
+						this.spawnEntityByAvailableName(Entity.availableNames.values()[spawnRule[1]], x, y);
+					}
 				}
 			}
-		}
+		} //end if still intervals configured
 		
 		//Check for GameOver things.
 		this.checkGameOverCondition();
diff --git a/src/de/teamteamteam/spacescooter/utility/CollisionHandler.java b/src/de/teamteamteam/spacescooter/utility/CollisionHandler.java
index a1d7b48..5dc491e 100644
--- a/src/de/teamteamteam/spacescooter/utility/CollisionHandler.java
+++ b/src/de/teamteamteam/spacescooter/utility/CollisionHandler.java
@@ -70,18 +70,18 @@ public class CollisionHandler {
 	 * Check if two Collidables actually collided.
 	 */
 	private static boolean doCollide(Collidable cOne, Collidable cTwo) {
-		int x1 = cOne.getX();
-		int x2 = cOne.getX() + cOne.getWidth();
-		int x3 = cTwo.getX();
-		int x4 = cTwo.getX() + cTwo.getWidth();
-		int total_width = cOne.getWidth() + cTwo.getWidth();
+		int x1 = cOne.getHitboxX();
+		int x2 = cOne.getHitboxX() + cOne.getHitboxWidth();
+		int x3 = cTwo.getHitboxX();
+		int x4 = cTwo.getHitboxX() + cTwo.getHitboxWidth();
+		int total_width = cOne.getHitboxWidth() + cTwo.getHitboxWidth();
 		boolean x_overlap = total_width > Math.abs(Math.max(x2, x4) - Math.min(x1, x3));
 		
-		int y1 = cOne.getY();
-		int y2 = cOne.getY() + cOne.getHeight();
-		int y3 = cTwo.getY();
-		int y4 = cTwo.getY() + cTwo.getHeight();
-		int total_height = cOne.getHeight() + cTwo.getHeight();
+		int y1 = cOne.getHitboxY();
+		int y2 = cOne.getHitboxY() + cOne.getHitboxHeight();
+		int y3 = cTwo.getHitboxY();
+		int y4 = cTwo.getHitboxY() + cTwo.getHitboxHeight();
+		int total_height = cOne.getHitboxHeight() + cTwo.getHitboxHeight();
 		boolean y_overlap = total_height > Math.abs(Math.max(y2, y4) - Math.min(y1, y3));
 		
 		return x_overlap && y_overlap;