Create subfolders for shot images and item images.

src/de/teamteamteam/spacescooter/background/item/TestItem1.java

@@ -6,7 +6,7 @@ public class TestItem1 extends Items{
 		
 	public TestItem1(int x, int y) {
 		super(x, y);
-		this.setImage("images/Item.png");
+		this.setImage("images/items/item.png");
 	}
 
 	@Override

src/de/teamteamteam/spacescooter/background/item/TestItem2.java

@@ -8,7 +8,7 @@ public class TestItem2 extends Items{
 	
 	public TestItem2(int x, int y) {
 		super(x, y);
-		this.setImage("images/Item2.png");
+		this.setImage("images/items/item2.png");
 	}
 
 	@Override

src/de/teamteamteam/spacescooter/background/item/TestItem3.java

@@ -8,7 +8,7 @@ public class TestItem3 extends Items{
 	
 	public TestItem3(int x, int y) {
 		super(x, y);
-		this.setImage("images/Item3.png");
+		this.setImage("images/items/item3.png");
 	}
 
 	@Override

src/de/teamteamteam/spacescooter/background/item/TestItem4.java

@@ -8,7 +8,7 @@ public class TestItem4 extends Items{
 	
 	public TestItem4(int x, int y) {
 		super(x, y);
-		this.setImage("images/Item4.png");
+		this.setImage("images/items/item4.png");
 	}
 
 	@Override

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

@@ -17,6 +17,7 @@ public class Player extends ShootingEntity implements KeyboardListener {
 	public Player(int x, int y) {
 		super(x, y);
 		this.setImage("images/ship.png");
+		this.setPrimaryShotImage("images/shots/laser_blue.png");
 		this.setShootDelay(20);
 		this.setShootSpawn(50, 16);
 		this.setShootDirection(Shot.RIGHT);

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

@@ -13,7 +13,7 @@ public abstract class ShootingEntity extends LivingEntity {
 	private int shootDirection;
 	private int damageValue = 5;
 	private int shootSpeed;
-	private String primaryShotImage = "images/shot02.png";
+	private String primaryShotImage;
 	
 	public ShootingEntity(int x, int y) {
 		super(x, y);
@@ -34,18 +34,15 @@ public abstract class ShootingEntity extends LivingEntity {
 		}
 	}
 
-	/**
-	 * Override this method in the actual enemy class to change the type of shot the entity creates.
-	 */
 	public void createShot() {
 		new Shot(
-		        this.x + this.shootSpawnX,
-		        this.y + this.shootSpawnY,
-		        this.shootDirection,
-		        this.shootSpeed,
-		        this.damageValue,
-		        this.primaryShotImage
-        );
+				this.x + this.shootSpawnX,
+				this.y + this.shootSpawnY,
+				this.shootDirection,
+				this.shootSpeed,
+				this.damageValue,
+				this.primaryShotImage
+				);
 	}
 
 	public void setCanShoot(boolean canShoot) {

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

@@ -12,7 +12,6 @@ public abstract class Enemy extends ShootingEntity {
 		this.name = "EnemyOne";
 		this.willShoot = r.nextBoolean();
 		this.setShootDirection(Shot.LEFT);
-		this.setPrimaryShotImage("images/shot03.png");
 	}
 
 	protected String name;

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

@@ -16,6 +16,7 @@ public class EnemyFour extends Enemy{
 	public EnemyFour(int x, int y, ArrayList<Point> points) {
 		super(x, y);
 		this.setImage("images/enemy01.png");
+		this.setPrimaryShotImage("images/shots/laser_yellow.png");
 		this.setShootSpeed(4);
 		this.setShootDelay(42);
 		this.setShootSpawn(-10, 10);

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

@@ -5,6 +5,7 @@ public class EnemyOne extends Enemy {
 	public EnemyOne(int x, int y) {
 		super(x, y);
 		this.setImage("images/nyancat.png");
+		this.setPrimaryShotImage("images/shots/laser_red.png");
 		this.setShootSpeed(2);
 		this.setShootDelay(42);
 		this.setShootSpawn(-8, 10);

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

@@ -20,6 +20,7 @@ public class EnemyThree extends Enemy{
 		super(x, y);
 		random = new Random();
 		this.setImage("images/enemy02.png");
+		this.setPrimaryShotImage("images/shots/laser_red.png");
 		this.setShootSpeed(4);
 		this.setShootDelay(42);
 		this.setShootSpawn(-10, 10);

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

@@ -10,6 +10,7 @@ public class EnemyTwo extends Enemy{
 		super(x, y);
 		Random random = new Random();
 		this.setImage("images/enemy02.png");
+		this.setPrimaryShotImage("images/shots/laser_green.png");
 		this.setShootSpeed(4);
 		this.setShootDelay(42);
 		this.setShootSpawn(-10, 10);

src/de/teamteamteam/spacescooter/utility/CodeEnvironment.java

@@ -44,17 +44,29 @@ public class CodeEnvironment {
 	}
 	
 	/**
-	 * Return a list of files based on a given folder.
+	 * Return a relative path list of files based on a given folder.
 	 */
 	private static String[] getFileListFromFolder(File folder) {
 		ArrayList<String> fileList = new ArrayList<String>();
 		String rootPath = folder.getAbsolutePath() + File.separator;
+		String[] folderContents = CodeEnvironment.getAbsoluteFileListFromFolder(folder);
+		for(String element : folderContents) {
+			fileList.add(element.replace(rootPath, ""));
+		}
+		return fileList.toArray(new String[fileList.size()]);
+	}
+	
+	/**
+	 * Recursively generate an absolute path list of elements within a folder.
+	 */
+	private static String[] getAbsoluteFileListFromFolder(File folder) {
+		ArrayList<String> fileList = new ArrayList<String>();
 		File[] folderContents = folder.listFiles();
 		for(File f : folderContents) {
 			if(f.isDirectory()) {
-				String[] filesInDirectory = CodeEnvironment.getFileListFromFolder(f);
+				String[] filesInDirectory = CodeEnvironment.getAbsoluteFileListFromFolder(f);
 				for(String entry : filesInDirectory) {
-					fileList.add(entry.replace(rootPath, ""));
+					fileList.add(entry);
 				}
 			} else {
 				fileList.add(f.toString());
@@ -64,7 +76,7 @@ public class CodeEnvironment {
 	}
 	
 	/**
-	 * Returns a list of files that are contained within the current jar.
+	 * Returns a relative path list of files that are contained within the current jar.
 	 */
 	private static String[] getFileListFromJar(URL jar) {
 		List<String> list = new ArrayList<String>();

src/de/teamteamteam/spacescooter/utility/Loader.java

@@ -45,11 +45,17 @@ public class Loader {
 	 * Return the loaded BufferedImage by its relative filename.
 	 */
 	public static BufferedImage getBufferedImageByFilename(String filename) {
+		BufferedImage image = null;
 		if(CodeEnvironment.isJar()) {
-			return Loader.images.get(filename);
+			image = Loader.images.get(filename);
 		} else {
-			return Loader.images.get(filename.replace("/", File.separator));
+			image = Loader.images.get(filename.replace("/", File.separator));
 		}
+		
+		if(image == null) {
+			System.err.println("Could not get BufferedImage by filename: '" + filename + "'");
+		}
+		return image;
 	}
 
 	/**
@@ -95,7 +101,7 @@ public class Loader {
 		try {
 			BufferedImage image = ImageIO.read(Loader.class.getClassLoader().getResourceAsStream(filename));
 			Loader.images.put(filename, image);
-		} catch (IOException e) {
+		} catch (Exception e) {
 			System.err.println("Unable to load BufferedImage: " + filename);
 			e.printStackTrace();
 		}