fixing maintainability, and intentionality issues

Author: rofidakhaled

entity-component-system/src/main/java/com/iluwatar/App.java

@@ -38,7 +38,7 @@ public class App {
    * @param args Command-line arguments (not used in this application)
    */
   public static void main(String[] args) {
-    System.out.print("Hello, World!");
+
 
     Entity entity1 = new Entity("Entity1");
     Entity entity2 = new Entity("Entity2");

entity-component-system/src/main/java/com/iluwatar/Component.java

@@ -39,7 +39,7 @@ public abstract class Component {
    * Default constructor for the component.
    * Initializes a new component with default values.
    */
-  public Component() {
+  protected Component() {
     // Constructor left empty intentionally, no specific initialization required
   }
 

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

@@ -158,10 +158,6 @@ public void setEnabled(boolean enabled) {
     }
   }
 
-  public boolean getEnabled() {
-    return isEnabled;
-  }
-
   /**
    * Updates the entity and its components.
    *
@@ -214,9 +210,9 @@ public List<Component> getComponents() {
    * Renders the entity and its components.
    */
   public void renderEntity() {
-    for (Component component : components) {
+    //for (Component component : components) {
       // Render each component
-    }
+    //}
   }
 
   // Getters and Setters for fields

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

@@ -112,9 +112,9 @@ public void update(float deltaTime) {
    * Renders the system (rendering logic can be implemented as needed).
    */
   public void renderSystem() {
-    for (Entity entity : entities) {
+    //for (Entity entity : entities) {
       // Implement rendering logic
-    }
+    //}
   }
 
   /**

entity-component-system/src/main/java/com/iluwatar/HealthComponent.java

@@ -33,8 +33,6 @@
  */
 public class HealthComponent extends Component {
 
-  private static final Logger logger = Logger.getLogger(HealthComponent.class.getName());
-
   private float currentHealth;
   private float maxHealth;
   private boolean isAlive;

entity-component-system/src/main/java/com/iluwatar/VelocityComponent.java

@@ -32,7 +32,6 @@
  */
 public class VelocityComponent extends Component {
 
-  private static final Logger logger = Logger.getLogger(VelocityComponent.class.getName());
 
   private float velocityX;  // The velocity in the X direction
   private float velocityY;  // The velocity in the Y direction

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

@@ -30,7 +30,7 @@
 import java.io.ByteArrayOutputStream;
 import java.io.PrintStream;
 
-public class AppTest {
+class AppTest {
 
   private Entity entity1;
   private Entity entity2;
@@ -42,7 +42,7 @@ public class AppTest {
       new float[]{0.0f, 45.0f, 0.0f}, new float[]{1.0f, 1.0f, 1.0f});
 
   @BeforeEach
-  public void setUp() {
+void setUp() {
     entity1 = new Entity("Entity1");
     entity2 = new Entity("Entity2");
 
@@ -56,25 +56,20 @@ public void setUp() {
     entity1.addComponent(velocity1);
   }
   @Test
-  public void testMain_shouldPrintHelloWorld() {
-
-    ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
-    System.setOut(new PrintStream(outputStream));
-
-    App.main(new String[]{});
-
-    assertEquals("Hello, World!", outputStream.toString(), "The output should be 'Hello, World!'");
+void testMain_DoesNotThrowException() {
+    assertDoesNotThrow(() -> App.main(new String[]{}), "Child entity should not throw an exception if the parent is disabled.");
   }
+
   @Test
-  public void testHealthComponentApplyDamage() {
+void testHealthComponentApplyDamage() {
 
     health1.applyDamage(30);
 
     assertEquals(70, health1.getCurrentHealth(), "Health should be reduced by 30");
   }
 
   @Test
-  public void testVelocityComponentApplyForce() {
+void testVelocityComponentApplyForce() {
 
     velocity1.applyForce(0.5f, 0.0f, 0.0f);
 
@@ -84,7 +79,7 @@ public void testVelocityComponentApplyForce() {
   }
 
   @Test
-  public void testEntityUpdate() {
+void testEntityUpdate() {
 
     float deltaTime = 1.0f / 60.0f;
     velocity1.setVelocityY(12.0f);
@@ -95,7 +90,7 @@ public void testEntityUpdate() {
   }
 
   @Test
-  public void testEntityHealthAfterDamageAndForce() {
+void testEntityHealthAfterDamageAndForce() {
 
     health1.applyDamage(40);
 
@@ -108,7 +103,7 @@ public void testEntityHealthAfterDamageAndForce() {
   }
 
   @Test
-  public void testFinalEntityStateAfterSimulation() {
+void testFinalEntityStateAfterSimulation() {
 
     GameSystem gameSystem = new GameSystem();
     gameSystem.addEntity(entity1);
@@ -134,13 +129,13 @@ public void testFinalEntityStateAfterSimulation() {
   }
 
   @Test
-  public void testAddTransformComponent() {
+void testAddTransformComponent() {
     entity1.addComponent(transform1);
     assertTrue(entity1.getComponents().contains(transform1), "Entity1 should contain the added TransformComponent.");
   }
 
   @Test
-  public void testGameLoopUpdatesEntityState() {
+void testGameLoopUpdatesEntityState() {
     GameSystem gameSystem = new GameSystem();
     gameSystem.addEntity(entity1);
 
@@ -154,15 +149,15 @@ public void testGameLoopUpdatesEntityState() {
   }
 
   @Test
-  public void testHealthReductionOverMultipleDamages() {
+void testHealthReductionOverMultipleDamages() {
     health1.applyDamage(20);
     health1.applyDamage(30);
 
     assertEquals(50, health1.getCurrentHealth(), "Health should be reduced by 50 after two damage applications.");
   }
 
   @Test
-  public void testEntityRemovalFromGameSystem() {
+void testEntityRemovalFromGameSystem() {
     GameSystem gameSystem = new GameSystem();
     gameSystem.addEntity(entity1);
 
@@ -173,15 +168,15 @@ public void testEntityRemovalFromGameSystem() {
   }
 
   @Test
-  public void testEntityWithoutComponents() {
+void testEntityWithoutComponents() {
     Entity entity = new Entity("EmptyEntity");
     entity.removeComponent(entity.getTransformComponent());
     assertTrue(entity.getComponents().isEmpty(), "Entity should have no components.");
     assertEquals("EmptyEntity", entity.getName(), "Entity should have the correct name.");
   }
 
   @Test
-  public void testSetParentAndChildren() {
+void testSetParentAndChildren() {
     Entity parentEntity = new Entity("ParentEntity");
     Entity childEntity = new Entity("ChildEntity");
 
@@ -192,9 +187,8 @@ public void testSetParentAndChildren() {
   }
 
   @Test
-  public void testVelocityComponentReset() {
+void testVelocityComponentReset() {
     velocity1.applyForce(1.0f, 0.0f, 0.0f);
-    float newVelocityX = velocity1.getVelocityX();
 
     velocity1.resetVelocity();
 
@@ -204,7 +198,7 @@ public void testVelocityComponentReset() {
   }
 
   @Test
-  public void testHealthAndForceAppliedTogether() {
+void testHealthAndForceAppliedTogether() {
     health1.applyDamage(20);
     velocity1.applyForce(0.5f, 0.0f, 0.0f);
 

entity-component-system/src/test/java/com/iluwatar/ComponentTest.java

@@ -28,25 +28,25 @@
 
 import static org.junit.jupiter.api.Assertions.*;
 
-public class ComponentTest {
+ class ComponentTest {
   @Test
-  public void testGetName() {
-    Component component = new HealthComponent(100);
+  void testGetName() {
+    Component component = new HealthComponent(10);
     component.setName("Health");
 
-    assertEquals("Health", component.getName(), "getName should return 'TestComponent'");
+    assertEquals("Health", component.getName(), "getName should return 'Health'");
   }
 
   @Test
-  public void testSetName() {
+ void testSetName() {
     Component component = new HealthComponent(100);
-    component.setName("Health");
-
-    assertEquals("Health", component.getName(), "getName should return 'TestComponent'");
+    component.setName("Velocity");
+    component.setName("Transform");
+    assertEquals("Transform", component.getName(), "getName should return 'Transform'");
   }
 
   @Test
-  public void testComponentEnabled() {
+ void testComponentEnabled() {
     Component component = new HealthComponent(100);
     component.setEnabled(true);
 
@@ -57,7 +57,7 @@ public void testComponentEnabled() {
   }
 
   @Test
-  public void testComponentParent() {
+void testComponentParent() {
     Component component = new HealthComponent(100);
     Entity parentEntity = new Entity("ParentEntity");