refactor: update power-up names, adjust ball speed and imply BGM toggle

- Reduced default ball speed from 2000.0 to 1000.0.
- Added method to check if any sound is playing in SoundManager.
- Updated GameOverScreen to launch MainMenuScreen instead of going back to the previous screen.
- Adjustment to only update game in GameScreen when deltatime is not zero (when in pause state)

Author: BakaAfk

client/src/main/java/io/exterminator3618/client/Constants.java

@@ -29,7 +29,7 @@ public class Constants {
     /**
      * Default ball speed.
      */
-    public static double BALL_SPEED = 2000.0;
+    public static double BALL_SPEED = 1000.0;
     /**
      * Ball collision tolerance.
      */

client/src/main/java/io/exterminator3618/client/Exterminator3618.java

@@ -100,6 +100,7 @@ public void backToPreviousScreen () {
             return;
         }
         screenStack.pop();
+        screenStack.peek().show();
         if (screenStack.isEmpty()) {
             log.warn("Popped the last screen, quiting game.");
             Gdx.app.exit();

client/src/main/java/io/exterminator3618/client/Settings.java

@@ -0,0 +1,5 @@
+package io.exterminator3618.client;
+
+public class Settings {
+    public static boolean enableMusic = true;
+}

client/src/main/java/io/exterminator3618/client/components/ExtraLifePowerUp.java

@@ -6,7 +6,7 @@
 public class ExtraLifePowerUp extends PowerUp {
 
     public ExtraLifePowerUp(int x, int y) {
-        super("extra_life_power_up", 0.0f , x, y, Constants.POWERUP_WIDTH, Constants.POWERUP_HEIGHT, "extra_life_power_up");
+        super("Extra Life", 0.0f , x, y, Constants.POWERUP_WIDTH, Constants.POWERUP_HEIGHT, "extra_life_power_up");
     }
 
     @Override

client/src/main/java/io/exterminator3618/client/components/HeavyBallPowerUp.java

@@ -10,7 +10,7 @@
 public class HeavyBallPowerUp extends PowerUp {
 
     public HeavyBallPowerUp(int x, int y) {
-        super("heavy_ball_power_up", 5.0f, x, y, Constants.POWERUP_WIDTH, Constants.POWERUP_HEIGHT, "heavy_ball_power_up");
+        super("Heavy Ball", 5.0f, x, y, Constants.POWERUP_WIDTH, Constants.POWERUP_HEIGHT, "heavy_ball_power_up");
     }
 
     @Override

client/src/main/java/io/exterminator3618/client/components/SlowBallPowerUp.java

@@ -6,7 +6,7 @@
 public class SlowBallPowerUp extends PowerUp {
 
     public SlowBallPowerUp(int x, int y) {
-        super("slow_ball_power_up", 20.0f, x, y, Constants.POWERUP_WIDTH, Constants.POWERUP_HEIGHT, "slow_ball_power_up");
+        super("Slow Ball", 20.0f, x, y, Constants.POWERUP_WIDTH, Constants.POWERUP_HEIGHT, "slow_ball_power_up");
     }
 
     @Override
@@ -25,4 +25,5 @@ public void removeEffect (GameScreen gameScreen){
             gameScreen.getBall().updateVelocity();
         }
     }
+
 }

client/src/main/java/io/exterminator3618/client/components/SplitBallPowerUp.java

@@ -9,7 +9,7 @@
 public class SplitBallPowerUp extends PowerUp {
 
     public SplitBallPowerUp(int x, int y) {
-        super("split_ball_power_up", 0.0f , x, y, Constants.POWERUP_WIDTH, Constants.POWERUP_HEIGHT, "split_ball_power_up");
+        super("Split Ball", 0.0f , x, y, Constants.POWERUP_WIDTH, Constants.POWERUP_HEIGHT, "split_ball_power_up");
     }
 
     @Override
@@ -31,4 +31,6 @@ public void removeEffect(GameScreen gameScreen) {
         // No-op: this is an instant effect power-up
     }
 
+
+
 }

client/src/main/java/io/exterminator3618/client/components/StickyPaddlePowerUp.java

@@ -10,7 +10,7 @@
 public class StickyPaddlePowerUp extends PowerUp {
 
     public StickyPaddlePowerUp(int x, int y) {
-        super("sticky_paddle_power_up", 10.0f, x, y, Constants.POWERUP_WIDTH, Constants.POWERUP_HEIGHT, "sticky_paddle_power_up");
+        super("Sticky Paddle", 10.0f, x, y, Constants.POWERUP_WIDTH, Constants.POWERUP_HEIGHT, "sticky_paddle_power_up");
     }
 
     @Override

client/src/main/java/io/exterminator3618/client/components/WidenPaddlePowerUp.java

@@ -10,7 +10,7 @@
 public class WidenPaddlePowerUp extends PowerUp {
 
     public WidenPaddlePowerUp(int x, int y) {
-        super("widen_paddle_power_up", 10.0f, x, y, Constants.POWERUP_WIDTH, Constants.POWERUP_HEIGHT, "extend_paddle_power_up");
+        super("Widen Paddle", 10.0f, x, y, Constants.POWERUP_WIDTH, Constants.POWERUP_HEIGHT, "extend_paddle_power_up");
     }
 
     @Override

client/src/main/java/io/exterminator3618/client/managers/SoundManager.java

@@ -1,13 +1,14 @@
 package io.exterminator3618.client.managers;
 
-import com.badlogic.gdx.Gdx;
-import com.badlogic.gdx.audio.Music;
-import com.badlogic.gdx.audio.Sound;
+import java.util.HashMap;
+import java.util.Map;
+
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import java.util.HashMap;
-import java.util.Map;
+import com.badlogic.gdx.Gdx;
+import com.badlogic.gdx.audio.Music;
+import com.badlogic.gdx.audio.Sound;
 
 /**
  * Quản lý âm thanh đơn giản cho game.