Homework 4: RPG Raid System - Bridge + Composite

Overview

You now have heroes, enemies, and a basic battle engine from previous homework. In this assignment, you will design a raid system that supports:

• Flexible skill-effect combinations without class explosion
• Uniform handling of single fighters and nested teams

Your job is to implement:

• Bridge Pattern for skill + effect decoupling
• Composite Pattern for unit + group hierarchies

What You Will Build

• A CombatNode hierarchy where leaf units and groups share one interface
• A Skill hierarchy that delegates damage behavior to EffectImplementor
• A raid engine that can run battles for single units and nested groups

Patterns and Roles

• Bridge: Skill (abstraction) + EffectImplementor (implementor)
• Composite: CombatNode (component), UnitLeaf (leaf), PartyComposite/RaidGroup (composite)

Connection to Previous Homework

• HW1: object creation patterns for characters and equipment
• HW2: advanced enemy creation and cloning
• HW3: singleton battle orchestration and API adapters
• HW4: structural flexibility for abilities and team hierarchies

Requirements at a Glance

• Implement Bridge with at least 2 skill types and 3 effect implementors
• Implement Composite with leaf and nested group behavior
• Integrate both patterns in RaidEngine
• Demonstrate all features in Main.java
• Provide UML diagrams for Bridge and Composite

Running the Project

javac -d out $(find src -name "*.java")
java -cp out com.narxoz.rpg.Main

Deliverables

• Completed Java code
• UML diagrams (2)
• Clear console output from demo

Read ASSIGNMENT.md for full instructions and rubric.