Implement Entity Component System (ECS) architecture

[rofidakhaled]

This pull request implements the ECS pattern, improving and enabling : entity management, component interaction, scalability, and reusability.

Close # <485>

[github-actions]

PR Summary

This pull request implements the Entity Component System (ECS) architecture, improving entity management, component interaction, scalability, and reusability. It includes comprehensive unit tests for all components and systems.

Changes

File	Summary
entity-component-system/README.md	New file describing the implementation of the Entity Component System (ECS) architecture.
entity-component-system/etc/entity-component-system.urm.puml	New file containing a UML diagram illustrating the ECS architecture, showing the relationships between entities, components, and systems.
entity-component-system/pom.xml	New file containing the project's dependencies and build configuration for the ECS implementation.
entity-component-system/src/main/java/com/iluwatar/App.java	New file containing the main application class that demonstrates the ECS pattern by creating, updating, and interacting with entities and components.
entity-component-system/src/main/java/com/iluwatar/Component.java	New file defining the Component abstract class, which represents a component in the ECS system. It includes methods for enabling/disabling components and updating them.
entity-component-system/src/main/java/com/iluwatar/Entity.java	New file defining the Entity class, which represents an entity in the ECS system. It manages components, children entities, and provides methods for updating and enabling/disabling entities.
entity-component-system/src/main/java/com/iluwatar/GameSystem.java	New file defining the GameSystem class, which manages entities, updates them, and provides methods for rendering and sorting entities by distance.
entity-component-system/src/main/java/com/iluwatar/HealthComponent.java	New file defining the HealthComponent class, which represents a health component in the ECS system. It tracks current health, max health, and whether the entity is alive.
entity-component-system/src/main/java/com/iluwatar/TransformComponent.java	New file defining the TransformComponent class, which handles the transformation (position, scale, rotation) of an entity in 3D space.
entity-component-system/src/main/java/com/iluwatar/VelocityComponent.java	New file defining the VelocityComponent class, which manages the velocity of an entity in 3D space. It includes methods for applying forces and friction.
entity-component-system/src/test/java/com/iluwatar/AppTest.java	New file containing unit tests for the main application class, verifying the functionality of entity creation, component addition, and state updates.
entity-component-system/src/test/java/com/iluwatar/ComponentTest.java	New file containing unit tests for the Component class, verifying the functionality of setting and getting component names and enabling/disabling components.
entity-component-system/src/test/java/com/iluwatar/EntityTest.java	New file containing unit tests for the Entity class, verifying the functionality of adding, removing, and retrieving components, as well as managing child entities and enabling/disabling entities.
entity-component-system/src/test/java/com/iluwatar/GameSystemTest.java	New file containing unit tests for the GameSystem class, verifying the functionality of adding, removing, and managing entities within the system, including sorting by distance.
entity-component-system/src/test/java/com/iluwatar/HealthComponentTest.java	New file containing unit tests for the HealthComponent class, verifying the functionality of applying damage, healing, and checking the entity's alive status.
entity-component-system/src/test/java/com/iluwatar/TransformComponentTest.java	New file containing unit tests for the TransformComponent class, verifying the functionality of setting and getting position, rotation, and scale.
entity-component-system/src/test/java/com/iluwatar/VelocityComponentTest.java	New file containing unit tests for the VelocityComponent class, verifying the functionality of applying forces, friction, and resetting velocity.
pom.xml	The entity-component-system module was added to the project's modules list.
update-header.sh	The header of the script was updated to include the MIT license information.

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autogenerated by presubmit.ai

[github-actions]

✅ LGTM!

Review Summary

Commits Considered (10)

• b6a3848: Merge branch 'master' into feature/485-ecs-pattern-implementation
• f92c2a4: even more issues fixed
• cada3be: fixing the last issues
• b4c6a30: fixing more maintainability and intentionality issues
• 80e42c3: Update HealthComponentTest.java
• a9edc07: fixing maintainability, and intentionality issues
• 38ef4a6: even more test cases
• cd41e1a: Update EntityTest.java
• 49cfb6b: adding test cases to all classes
• 0bb2e90: implementing ECS pattern

Files Processed (19)

• entity-component-system/README.md (0 hunks)
• entity-component-system/etc/entity-component-system.urm.puml (1 hunk)
• entity-component-system/pom.xml (1 hunk)
• entity-component-system/src/main/java/com/iluwatar/App.java (1 hunk)
• entity-component-system/src/main/java/com/iluwatar/Component.java (1 hunk)
• entity-component-system/src/main/java/com/iluwatar/Entity.java (1 hunk)
• entity-component-system/src/main/java/com/iluwatar/GameSystem.java (1 hunk)
• entity-component-system/src/main/java/com/iluwatar/HealthComponent.java (1 hunk)
• entity-component-system/src/main/java/com/iluwatar/TransformComponent.java (1 hunk)
• entity-component-system/src/main/java/com/iluwatar/VelocityComponent.java (1 hunk)
• entity-component-system/src/test/java/com/iluwatar/AppTest.java (1 hunk)
• entity-component-system/src/test/java/com/iluwatar/ComponentTest.java (1 hunk)
• entity-component-system/src/test/java/com/iluwatar/EntityTest.java (1 hunk)
• entity-component-system/src/test/java/com/iluwatar/GameSystemTest.java (1 hunk)
• entity-component-system/src/test/java/com/iluwatar/HealthComponentTest.java (1 hunk)
• entity-component-system/src/test/java/com/iluwatar/TransformComponentTest.java (1 hunk)
• entity-component-system/src/test/java/com/iluwatar/VelocityComponentTest.java (1 hunk)
• pom.xml (1 hunk)
• update-header.sh (1 hunk)

Actionable Comments (0)

Skipped Comments (0)

[iluwatar]

Additionally, please update the README.md. It needs to have a very specific format described in https://github.com/iluwatar/java-design-patterns/wiki/01.-How-to-contribute. See the other patterns for examples.

[iluwatar]

Here, above the App class, please explain the pattern briefly and describe how the code example implements it.

[iluwatar]

Add comments where needed. Remember, this is learning material.

[iluwatar]

Use Lombok to get rid of boilerplate code such as getters and setters

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
95.1% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

This PR is stale because it has been open 60 days with no activity.

[iluwatar]

Closed due to inactivity. Thank you for the contribution.