Reworked Animation handling.

src/main/java/engine/Display.java

@@ -6,6 +6,7 @@
 
 import javax.swing.*;
 import java.awt.*;
+import java.awt.event.FocusEvent;
 import java.awt.image.BufferStrategy;
 
 /**
@@ -68,8 +69,6 @@ private void createWindow() {
      */
     public Display setFullScreen(boolean fullScreen) {
         this.fullScreen = fullScreen;
-        String backup = attachedScene;
-        attachedScene = null;
         frame.dispose();
         if (fullScreen) {
             frame.setExtendedState(Frame.MAXIMIZED_BOTH);
@@ -80,9 +79,9 @@ public Display setFullScreen(boolean fullScreen) {
             frame.setLocation(100, 100);
             frame.setUndecorated(false);
         }
-
         frame.setVisible(true);
-        this.attachScene(backup);
+        frame.toFront();
+        frame.requestFocus();
         return this;
     }
 
@@ -159,13 +158,15 @@ public Display setTitle(String name) {
      */
     public Display attachScene(String alias) {
         //runs the init in a loaded scene
-        Game.getScene(alias).display = this;
-        Game.getScene(alias).keyListener = this.keyListener;
-        Game.getScene(alias).mouseListener = this.mouseListener;
+        Scene scene = Game.getScene(alias);
+        scene.display = this;
+        scene.keyListener = this.keyListener;
+        scene.mouseListener = this.mouseListener;
         this.mouseListener.clear();
-        Game.getScenes().get(alias).getObjectList().clear();
-        Game.getScenes().get(alias).init();
+        this.keyListener.clear();
+        scene.getObjectList().clear();
         this.attachedScene = alias;
+        scene.init();
         return this;
     }
 

src/main/java/engine/listeners/Keyboard.java

@@ -77,6 +77,13 @@ public void addListener(Integer keyCode, Consumer<KeyEvent> function, boolean bl
         });
     }
 
+    /**
+     * clears all keyboard events
+     */
+    public void clear() {
+        onKeyPress.clear();
+    }
+
     /**
      * Use this method to check if a key is held down
      *

src/main/java/engine/rendering/Graphics.java

@@ -75,7 +75,6 @@ public static void graphicsLoop() {
                     } catch (ConcurrentModificationException ignore) {
                     }
                 }
-                Animation.animationLoop();
                 bs.show();
                 g.dispose();
             } catch (IllegalStateException ignore) {

src/main/java/engine/rendering/TileSheet.java

@@ -0,0 +1,63 @@
+package engine.rendering;
+
+import java.awt.image.BufferedImage;
+import java.util.ArrayList;
+
+/**
+ * This class is used to extract the sub images out of an tile sheet.
+ */
+public class TileSheet {
+
+    public enum READ_DIRECTION {
+        UP_DOWN,
+        LEFT_RIGHT;
+    }
+
+    BufferedImage sheet;
+    int width, height, xImages, yImages;
+    READ_DIRECTION read_direction;
+    ArrayList<BufferedImage> subImages = new ArrayList<>();
+
+    /**
+     * @param sheet the tile sheet you want to process
+     * @param xImages how many images are in the x dimension
+     * @param yImages how many images are in the y dimension
+     * @param read_direction in witch direction the tile sheet should be read
+     */
+    public TileSheet(BufferedImage sheet, int xImages, int yImages, READ_DIRECTION read_direction) {
+        this.sheet = sheet;
+        this.width = sheet.getWidth();
+        this.height = sheet.getHeight();
+        this.xImages = xImages;
+        this.yImages = yImages;
+        this.read_direction = read_direction;
+        createSubImages();
+    }
+
+    void createSubImages() {
+        switch (read_direction) {
+
+            case UP_DOWN -> {
+                for (int x = 0; x < xImages; x++) {
+                    for (int y = 0; y < yImages; y++) {
+                        subImages.add(sheet.getSubimage(x * (width / xImages), y * (height / yImages), width / xImages, height / yImages));
+                    }
+                }
+            }
+            case LEFT_RIGHT -> {
+                for (int y = 0; y < yImages; y++) {
+                    for (int x = 0; x < xImages; x++) {
+                        subImages.add(sheet.getSubimage(x * (width / xImages), y * (height / yImages), width / xImages, height / yImages));
+                    }
+                }
+            }
+        }
+    }
+
+    /**
+     * @return Returns an arrayList of the sub images.
+     */
+    public ArrayList<BufferedImage> getSubImages() {
+        return subImages;
+    }
+}