even more issues fixed

Author: rofidakhaled

Diff for: entity-component-system/src/main/java/com/iluwatar/Entity.java

@@ -40,7 +40,6 @@ public class Entity {
   private boolean isEnabled;
   private TransformComponent transform;
   private Entity parent;
-  private GameSystem gameSystem;
   private List<Component> components;
   private List<Entity> children;
 
@@ -262,24 +261,6 @@ public void setIsEnabled(boolean isEnabled) {
     }
   }
 
-  /**
-   * Gets the game system this entity belongs to.
-   *
-   * @return the game system the entity is part of
-   */
-  public GameSystem getGameSystem() {
-    return gameSystem;
-  }
-
-  /**
-   * Sets the game system this entity belongs to.
-   *
-   * @param gameSystem the game system to set
-   */
-  public void setGameSystem(GameSystem gameSystem) {
-    this.gameSystem = gameSystem;
-  }
-
   /**
    * Gets the parent entity of this entity.
    *

Diff for: entity-component-system/src/main/java/com/iluwatar/GameSystem.java

@@ -51,8 +51,6 @@ public GameSystem() {
   public void addEntity(Entity entity) {
     if (entity != null) {
       entities.add(entity);
-      entity.setGameSystem(this);
-
       // Recursively add children entities
       for (Entity child : entity.getChildren()) {
         addEntity(child);

Diff for: entity-component-system/src/test/java/com/iluwatar/AppTest.java

@@ -106,9 +106,9 @@ void testFinalEntityStateAfterSimulation() {
     GameSystem gameSystem = new GameSystem();
     gameSystem.addEntity(entity1);
     gameSystem.addEntity(entity2);
-    TransformComponent TestTransform = new TransformComponent(new float[]{5.0f, 0.0f, 0.0f},
+    TransformComponent testTransform = new TransformComponent(new float[]{5.0f, 0.0f, 0.0f},
         new float[]{0.0f, 45.0f, 0.0f}, new float[]{1.0f, 1.0f, 1.0f});
-    entity1.setTransformComponent(TestTransform);
+    entity1.setTransformComponent(testTransform);
 
     for (int i = 0; i < 10; i++) {
       gameSystem.update(1.0f / 60.0f);

Diff for: entity-component-system/src/test/java/com/iluwatar/EntityTest.java

@@ -154,16 +154,6 @@ void testSetIsEnabled() {
     assertTrue(entityChild.isEnabled(), "The entity child should be enabled after calling setIsEnabled(true).");
   }
 
-  @Test
- void testGetAndSetGameSystem() {
- 
-    GameSystem gameSystem = new GameSystem();
-    Entity entity = new Entity("MyEntity");
-    entity.setGameSystem(gameSystem);
-    
-    assertEquals(gameSystem, entity.getGameSystem(), "The game system should match the one set.");
-  }
-
   @Test
  void testUpdate_whenEntityDisabled_shouldReturnImmediately() {