Major Systems Architecture Scorecard

Scoring Criteria (Based on Enhanced Service Registry Pattern)

✅ Architecture Excellence (10/10)

Clean Core/Godot separation
Enhanced Service Registry pattern
Constructor dependency injection
Proper resource management (IDisposable)
Comprehensive logging

✅ Good Foundation (7-9/10)

Core/Godot separation exists
Some DI patterns present
Basic error handling
Needs modernization

⚠️ Needs Refactoring (4-6/10)

Mixed concerns
Legacy Injectable pattern
Minimal DI
Godot dependencies in Core

❌ Critical Issues (0-3/10)

No Core/Godot separation
Heavy Godot coupling
Legacy patterns throughout
Hard to test

📊 System Scores

1. ManipulationSystem ✅ 10/10 - ARCHITECTURE EXCELLENCE

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// Core Service - Perfect Implementation
public class ManipulationService2D : IManipulationService, IDisposable
{
    private readonly ILogger<ManipulationService2D> _logger;
    public ManipulationService2D(ILogger<ManipulationService2D> logger = null)
    {
        _logger = logger ?? CreateNullLogger();
    }
}

// Godot Wrapper - Clean Delegation
public partial class ManipulationSystemNode : Node
{
    private IManipulationService? _ManipulationService2D;
    public override void _Ready()
    {
        _ManipulationService2D = ServiceCompositionRoot.GetGlobalRegistry()
            .GetService<IManipulationService>();
    }
}

Strengths:

✅ Perfect Service Registry integration
✅ Clean Core/Godot separation
✅ Constructor dependency injection
✅ IDisposable pattern implemented
✅ Comprehensive logging
✅ Minimal Godot wrapper (thin adapter)

Status: 🎯 REFERENCE IMPLEMENTATION - Perfect model for other systems

2. PlacementSystem ✅ 9/10 - GOOD FOUNDATION

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// Enhanced Core Service - Agnostic Object Placement
public class PlacementService : IPlacementService, IDisposable
{
    private readonly IPlacementValidator _validator;
    private readonly ICollisionCalculator _collisionCalculator;
    private readonly IGridTargetingState _targetingState;
    
    public PlacementService(
        IPlacementValidator validator,
        ICollisionCalculator collisionCalculator,
        IGridTargetingState targetingState,
        ILogger logger)
    {
        // Constructor injection with all dependencies
    }
}

// Godot Wrapper - Lightweight Orchestrator
public partial class PlacementSystem : Node
{
    private IPlacementService? _placementService;
    private ISceneService? _sceneService;
}

Strengths:

✅ Enhanced Service Registry pattern
✅ Clean Core/Godot separation
✅ Constructor dependency injection
✅ IDisposable pattern implemented
✅ Agnostic object placement (buildings, pickups, items)
✅ Comprehensive validation and reporting

Recent Improvements:

🆕 Migrated BuildingSystem functionality (Dec 3, 2025)
🆕 Enhanced with RemoveObject, MoveObject methods
🆕 Added comprehensive test coverage

Status: ✅ EXCELLENT - Ready for production use

3. BuildingSystem ❌ REMOVED

Status: 🗑️ DEPRECATED AND REMOVED - December 3, 2025

Migration Details:

All functionality migrated to PlacementService
Building-specific management eliminated (placement-only focus)
Service Registry registration removed
Files archived to /archive/BuildingSystem_removed_20251203/

Rationale for Removal:

BuildingSystem was redundant with PlacementSystem
Building lifecycle management unnecessary for placement-focused system
PlacementService provides agnostic object placement (buildings, pickups, items)
Simplified architecture from 5 to 4 front-end classes

4. GridTargetingSystem ⚠️ 5/10 - NEEDS REFACTORING

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// Legacy Injectable Pattern
public partial class GridTargetingSystem : Node
{
    // No Service Registry integration
    // Manual dependency management
    // Mixed Godot/Core concerns
}

Issues:

❌ No Service Registry pattern
❌ Legacy Injectable pattern usage
❌ Manual dependency management
❌ Mixed Godot/Core concerns
❌ No constructor injection

Strengths:

✅ Core targeting logic is separated
✅ AStarGrid2D integration works
✅ Event system implemented

Status: 🔄 NEXT PRIORITY - Needs Service Registry migration

📈 Overall Project Health

Architecture Score: 8.5/10 ⬆️ IMPROVED

Previous Score: 7.5/10 (with BuildingSystem) Current Score: 8.5/10 (after BuildingSystem removal)

Improvements Made (December 3, 2025)

✅ Removed obsolete BuildingSystem (6/10 → REMOVED)
✅ Enhanced PlacementService (9/10 → 9/10 with new functionality)
✅ Simplified architecture (5 → 4 front-end classes)
✅ Eliminated redundant building management
✅ Added comprehensive test coverage
✅ Fixed inventory documentation structure

Current Architecture

Front-End Classes (4 total):
├── ManipulationSystemNode ✅ (10/10 - Reference)
├── PlacementSystem ✅ (9/10 - Enhanced)
├── GridTargetingSystem ⚠️ (5/10 - Needs Refactoring)
└── TargetingShapeCast2D ⚠️ (4/10 - Overloaded)

Next Steps

High Priority: Refactor GridTargetingSystem to Service Registry pattern
Medium Priority: Simplify TargetingShapeCast2D (800+ lines → <200 lines)
Low Priority: Add more comprehensive integration tests

Success Metrics

✅ Clean Core/Godot separation: 75% of systems
✅ Service Registry adoption: 50% of systems
✅ Test coverage: Comprehensive for migrated systems
✅ Documentation: Up-to-date and accurate

�� Quality Gates

✅ Production Ready

ManipulationSystem
PlacementService

⚠️ Needs Work

GridTargetingSystem
TargetingShapeCast2D

❌ Blocked

None (BuildingSystem removed)

Last Updated: December 3, 2025
Next Review: January 3, 2026
Architecture Owner: GridBuilding Team