Add "FROZEN" mode to Ghost behavior and update logic

Introduced a new "FROZEN" mode to the Ghost state machine, ensuring proper handling in ghost behaviors and animations. Updated `GhostManager` and `Ghost` classes to integrate this mode, including relevant logic for updates and animations. Simplified and refined ghost initialization and strategy handling for better code maintainability.

src/main/java/se/urmo/game/entities/ghost/Ghost.java

@@ -1,6 +1,5 @@
 package se.urmo.game.entities.ghost;
 
-import lombok.Setter;
 import lombok.extern.slf4j.Slf4j;
 import se.urmo.game.collision.GhostCollisionChecker;
 import se.urmo.game.entities.BaseAnimated;
@@ -35,10 +34,10 @@ public class Ghost extends BaseAnimated {
     private final GhostCollisionChecker collisionChecker;
     private final GhostStrategy chaseStrategy;
     private final MyPoint startPos;
-    private final BufferedImage[] fearAnimation;
+    private static final BufferedImage[] fearAnimation = SpriteSheetManager.get(SpriteLocation.GHOST).getAnimation(8);
     private final BufferedImage[] baseAnimation;
     private final LevelManager levelManager;
-    private final BufferedImage[] eatenAnimation;
+    private static final BufferedImage[] eatenAnimation = SpriteSheetManager.get(SpriteLocation.GHOST).getAnimation(9);
     private double speed;
     private MyPoint position;
 
@@ -51,28 +50,24 @@ public class Ghost extends BaseAnimated {
     private final GhostStrategy fearStrategy = new FearStrategy();
     private int frightenedTimer = 0;
     private boolean isBlinking = false;
-    @Setter
-    private boolean frozen;
-    private GhostStrategy eatenStrategy;
+    private static final GhostStrategy eatenStrategy = new EatenStrategy();
 
 
-    public Ghost(GhostCollisionChecker collisionChecker, GhostStrategy strategy, GhostStrategy scaterStrategy, int animation, LevelManager levelManager) {
+    public Ghost(GhostCollisionChecker collisionChecker, GhostStrategy chaseStrategy, GhostStrategy scaterStrategy, int animation, LevelManager levelManager) {
         super(ANIMATION_UPDATE_FREQUENCY, GhostManager.MAX_SPRITE_FRAMES);
         this.collisionChecker = collisionChecker;
-        this.chaseStrategy = strategy;
+        this.chaseStrategy = chaseStrategy;
         this.scaterStrategy = scaterStrategy;
+        this.currentStrategy = this.chaseStrategy;
         this.baseAnimation = SpriteSheetManager.get(SpriteLocation.GHOST).getAnimation(animation);
-        this.fearAnimation = SpriteSheetManager.get(SpriteLocation.GHOST).getAnimation(8);
-        this.eatenAnimation = SpriteSheetManager.get(SpriteLocation.GHOST).getAnimation(9);
 
         position = new MyPoint(
-                13 * GameMap.MAP_TILESIZE + GameMap.OFFSET_X + ((double) GameMap.MAP_TILESIZE / 2),
-                4 * GameMap.MAP_TILESIZE + GameMap.OFFSET_Y + ((double) GameMap.MAP_TILESIZE / 2));
+                GameMap.colToScreen(13) + ((double) GameMap.MAP_TILESIZE / 2),
+                GameMap.rowToScreen(4) + ((double) GameMap.MAP_TILESIZE / 2));
         startPos = position;
-        this.currentStrategy = chaseStrategy;
+
         this.animation = baseAnimation;
         this.levelManager = levelManager;
-        this.eatenStrategy = new EatenStrategy();
         this.speed = BASE_SPEED * levelManager.getGhostSpeed();
     }
 
@@ -86,17 +81,22 @@ public class Ghost extends BaseAnimated {
     }
 
     public void update(PacMan pacman, GameMap map) {
-        if (frozen) return;
-        if (mode == GhostMode.FRIGHTENED) {
+        switch (mode) {
+            case FRIGHTENED -> {
                 updateInFrightendMode();
+                updatePosition(pacman, map);
             }
-        if (mode == GhostMode.EATEN) {
+            case EATEN -> {
                 if (position.asPoint().distance(startPos.asPoint()) < 10) {
                     setMode(GhostMode.CHASE);
                 }
-        }
                 updatePosition(pacman, map);
             }
+            case FROZEN -> {
+            }
+            default -> updatePosition(pacman, map);
+        }
+    }
 
     private void updateInFrightendMode() {
         frightenedTimer--;
@@ -134,10 +134,6 @@ public class Ghost extends BaseAnimated {
 
     }
 
-    private double getSpeed() {
-        return speed;
-    }
-
     private void moveTo(MyPoint newPosition) {
         MyPoint destination = collisionChecker.canMoveTo(direction, newPosition.x, newPosition.y);
         if (destination != null) {
@@ -219,13 +215,18 @@ public class Ghost extends BaseAnimated {
                 currentStrategy = fearStrategy;
             }
             case EATEN -> {
-                //speed = 1.2;
+                speed = 1.0;
                 currentStrategy = eatenStrategy;
                 animation = eatenAnimation;
             }
+            case FROZEN -> {/* Do nothing */}
         }
     }
 
+    private double getSpeed() {
+        return this.speed;
+    }
+
     public boolean isFrightened() {
         return mode == GhostMode.FRIGHTENED;
     }
@@ -239,10 +240,6 @@ public class Ghost extends BaseAnimated {
         return new Point((int) position.x, (int) position.y);
     }
 
-    public void resetModes() {
-        mode = GhostMode.CHASE;
-    }
-
     public boolean isEaten() {
         return mode == GhostMode.EATEN;
     }

src/main/java/se/urmo/game/entities/ghost/GhostMode.java

@@ -4,5 +4,6 @@ public enum GhostMode {
     CHASE,
     SCATTER,
     FRIGHTENED,
-    EATEN
+    EATEN,
+    FROZEN
 }

src/main/java/se/urmo/game/main/GhostManager.java

@@ -95,7 +95,7 @@ public class GhostManager {
     }
 
     public void setFrozen(boolean frozen) {
-        this.ghosts.forEach(ghost -> ghost.setFrozen(frozen));
+        this.ghosts.forEach(ghost -> ghost.setMode(GhostMode.FROZEN));
     }
 
     public int isFrightened() {