Spike 1: Save/Load Hook Feasibility

[SolshineCode]

🎯 Spike 1: Save/Load Hook Feasibility

Description

Investigate and implement hooks for save/load functionality in the Unciv mod to support game state persistence and injection of Claude-generated content.

Acceptance Criteria

• Implement save hook that captures game state at turn end
• Implement load hook that can inject custom content into saved games
• Test with sample game state data
• Document hook API and usage patterns
• Ensure compatibility with Unciv mod loader

Dependencies

• None

Estimated Story Points

3

Notes

This spike will determine how we can inject Claude-generated content into the game state and persist it across sessions.

[SolshineCode]

✅ Spike 1 Complete - Save/Load Hook Feasibility

Implementation Status: Complete ✅
Test Results: Successfully validated hook functionality

Implementation Summary

Created a comprehensive SaveGameManager with hook support that allows external modules to intercept save/load operations.

Key Components:

• SaveGameManager - Core save/load logic with hook invocation
• SaveHook / LoadHook - Hook interfaces for pre-save and post-load operations
• GameState - Game state representation with Player, Unit, City classes
• ClaudeSaveHook - Example hook that adds Claude metadata to saves

Proof of Concept:

Successfully demonstrated:

• Registering hooks that modify game state before saving
• Loading game state with post-processing hooks
• Preserving Claude metadata through save/load cycle

Technical Details:

• JSON serialization using Gson
• Hook pattern allows pluggable modules
• Metadata injection for Claude integration
• Extensible architecture for future enhancements

Files Created:

• SaveGameManager.java
• SaveHook.java / LoadHook.java
• GameState.java, Player.java, Unit.java, City.java
• ClaudeSaveHook.java (example)
• SaveGameManagerTest.java
• pom.xml (Maven build)

Acceptance Criteria Status:

• Implement save hook that captures game state at turn end
• Implement load hook that can inject custom content into saved games
• Test with sample game state data
• Document hook API and usage patterns
• Ensure compatibility with Unciv mod loader (proof of concept)

Next Steps: Integrate with actual Unciv codebase and adapt to Unciv modding API.

[SolshineCode]

Closed by PR #3 (merged 2026-05-07). Tracked on kanban as t_e92180fc / t_7f6cd0f3.