
JaeSuGang developed core gameplay systems and multiplayer features for the HeroesOfYggdrasil repository, focusing on scalable architecture and robust player experiences. Over four months, JaeSuGang implemented upgrade and stage management systems, refactored core components for maintainability, and introduced designer-friendly workflows using Unreal Engine Blueprints and C++. The work included networked player state synchronization, attribute replication, and a data-driven upgrade system, all supported by rigorous debugging and code organization. By integrating cheat modes and developer tooling, JaeSuGang improved testing efficiency and stability. The engineering approach emphasized modularity, performance optimization, and collaborative workflows, resulting in a well-structured, extensible codebase.

During May 2025, delivered Cheat Mode: InvincibleAll, a universal attack boost feature that enables all characters to receive enhanced attack power for broader testing and debugging. The feature was implemented via the InvincibleAll function and is supported by two commits for traceability and quick iteration: edb73111ce43b4b14ecc12df60ee400bdc8877e0 and 498ab05aebd70f8defaac42f770900b0849aac3b (치트모드 공격력 증가; 치트 수정). This work improves QA efficiency by enabling consistent combat states across the roster, accelerating reproduction of edge cases and balancing checks. Total impact: faster bug repro, safer regression testing, and a more robust baseline for future feature experiments. Demonstrated skills: feature flagging-like approach within the game's testing harness, careful commit hygiene, and cross-character testing workflows. Technologies: game engine code, testing harness integration, and repository-level collaboration in JaeSuGang/HeroesOfYggdrasil.
During May 2025, delivered Cheat Mode: InvincibleAll, a universal attack boost feature that enables all characters to receive enhanced attack power for broader testing and debugging. The feature was implemented via the InvincibleAll function and is supported by two commits for traceability and quick iteration: edb73111ce43b4b14ecc12df60ee400bdc8877e0 and 498ab05aebd70f8defaac42f770900b0849aac3b (치트모드 공격력 증가; 치트 수정). This work improves QA efficiency by enabling consistent combat states across the roster, accelerating reproduction of edge cases and balancing checks. Total impact: faster bug repro, safer regression testing, and a more robust baseline for future feature experiments. Demonstrated skills: feature flagging-like approach within the game's testing harness, careful commit hygiene, and cross-character testing workflows. Technologies: game engine code, testing harness integration, and repository-level collaboration in JaeSuGang/HeroesOfYggdrasil.
April 2025 Monthly Performance Summary – JaeSuGang/HeroesOfYggdrasil Overview: This month focused on building robust gameplay scaffolding, stabilizing core systems, and accelerating feature delivery through data-driven design and tooling. Key outcomes include a matured Upgrade System, a comprehensive Stage System overhaul, groundwork for Stage progression and direct BattleStage loading, plus a suite of stability fixes and developer tooling enhancements that improve velocity and product quality. Key deliverables: - Upgrade System implemented and expanded (manager, upgrade types, and data-asset integration), enabling player progression paths and easier tuning. Commits touched: 81abe5aa..., 3062f0f..., 6f38d5ca..., 052fb836..., 3eb54fb..., 571b3eb..., bcdd1b75..., 26df33ab... - Stage System overhaul and refactor (StageManager, StageSystem, delegates, Stage data structures; Stage data table wired up; groundwork for BattleStage variants like UBattleStage, UReinforceStage). Commits: 7408e405..., 62daa0e8..., 78bdef8e..., d79ca597..., 92ace3b5... - StageSystem implementation and Get function added; basic Stage flow groundwork. Commits: 7938acc0..., 029e2984... - Stability and quality improvements: build error fixes, general error fixes, asset loading fix, and UI/widget initialization fixes. Commits: fbc51544..., 628abd4d..., 2b113bb4..., f31208c8..., e1ba86db..., 3fce4710... - Dev tooling and telemetry: added Debug Command System, Cheat Manager, Time stamp recording, Tag Change Broadcast Delegate, plus spawner test scaffolding for validation. Commits: 5e50ad25..., 79df1ac8..., 6469a0d2..., d592e99b..., f4ca7084...
April 2025 Monthly Performance Summary – JaeSuGang/HeroesOfYggdrasil Overview: This month focused on building robust gameplay scaffolding, stabilizing core systems, and accelerating feature delivery through data-driven design and tooling. Key outcomes include a matured Upgrade System, a comprehensive Stage System overhaul, groundwork for Stage progression and direct BattleStage loading, plus a suite of stability fixes and developer tooling enhancements that improve velocity and product quality. Key deliverables: - Upgrade System implemented and expanded (manager, upgrade types, and data-asset integration), enabling player progression paths and easier tuning. Commits touched: 81abe5aa..., 3062f0f..., 6f38d5ca..., 052fb836..., 3eb54fb..., 571b3eb..., bcdd1b75..., 26df33ab... - Stage System overhaul and refactor (StageManager, StageSystem, delegates, Stage data structures; Stage data table wired up; groundwork for BattleStage variants like UBattleStage, UReinforceStage). Commits: 7408e405..., 62daa0e8..., 78bdef8e..., d79ca597..., 92ace3b5... - StageSystem implementation and Get function added; basic Stage flow groundwork. Commits: 7938acc0..., 029e2984... - Stability and quality improvements: build error fixes, general error fixes, asset loading fix, and UI/widget initialization fixes. Commits: fbc51544..., 628abd4d..., 2b113bb4..., f31208c8..., e1ba86db..., 3fce4710... - Dev tooling and telemetry: added Debug Command System, Cheat Manager, Time stamp recording, Tag Change Broadcast Delegate, plus spawner test scaffolding for validation. Commits: 5e50ad25..., 79df1ac8..., 6469a0d2..., d592e99b..., f4ca7084...
March 2025 monthly summary for JaeSuGang/HeroesOfYggdrasil. Focused on delivering architecture improvements, gameplay enhancements, and designer-friendly tooling while stabilizing performance and networking. Key achievements include core refactors, dynamic identity handling, expanded UI/configuration paths, centralized enemy handling, and upgraded player-state features that collectively improve maintainability, scalability, and player experience. Key features delivered: - Code Refactoring: Manager and PlayerZone redesign for cleaner architecture; UAttributeComponent refactor to align with new patterns. - GameMode and identity: Migrate PlayerID storage to a heap-allocated structure for dynamic lifetime management. - Designer-friendly stage logic: Stage blueprint conversion for designer workflows; MappingContext added (temporary) to scaffold integration. - Networking and player state: Added Player name RPC; Enabled CustomName in PlayerState; OnRep_Hp replication for AttributeComponent; TakeDamage delegate exposure. - Gameplay systems: Introduced EnemyManager to centralize enemy lifecycle; implemented stage clear conditions; enabled upgrade functionality. - UI/configuration paths: Alt Menu mode implementation; Alt UI Mode implementation and related toggling fixes. - Stability and performance: Removed enemy spawner to reduce lag; fixed compilation error from prior changes; general progress fixes. Major bugs fixed: - Compilation error introduced in previous changes resolved. - Alt UI mode toggle issue addressed. - General fixes (including lightweight fixes and stability improvements). Overall impact and accomplishments: - Significantly improved code maintainability and scalability through architectural refactors and centralized systems. - Enhanced player experience with reliable naming across clients, HP synchronization, and dynamic PlayerID handling. - Enabled designer-driven workflows via Stage Blueprint conversion and MappingContext scaffolding, improving iteration speed. - Reduced runtime lag and improved stability by removing a performance-limiting spawner and applying targeted fixes. Technologies/skills demonstrated: - Unreal Engine concepts: Blueprint conversion, replication (OnRep_Hp), RPCs, custom delegates, and heap allocation strategies. - Architecture and refactoring discipline: Clean separation of concerns among Manager, PlayerZone, and AttributeComponent. - Networking and multiplayer reliability: Client-server synchronization for player names and health. - Performance tuning: Spawner removal and stability-focused fixes; UI/UX mode toggles and mapping scaffolding.
March 2025 monthly summary for JaeSuGang/HeroesOfYggdrasil. Focused on delivering architecture improvements, gameplay enhancements, and designer-friendly tooling while stabilizing performance and networking. Key achievements include core refactors, dynamic identity handling, expanded UI/configuration paths, centralized enemy handling, and upgraded player-state features that collectively improve maintainability, scalability, and player experience. Key features delivered: - Code Refactoring: Manager and PlayerZone redesign for cleaner architecture; UAttributeComponent refactor to align with new patterns. - GameMode and identity: Migrate PlayerID storage to a heap-allocated structure for dynamic lifetime management. - Designer-friendly stage logic: Stage blueprint conversion for designer workflows; MappingContext added (temporary) to scaffold integration. - Networking and player state: Added Player name RPC; Enabled CustomName in PlayerState; OnRep_Hp replication for AttributeComponent; TakeDamage delegate exposure. - Gameplay systems: Introduced EnemyManager to centralize enemy lifecycle; implemented stage clear conditions; enabled upgrade functionality. - UI/configuration paths: Alt Menu mode implementation; Alt UI Mode implementation and related toggling fixes. - Stability and performance: Removed enemy spawner to reduce lag; fixed compilation error from prior changes; general progress fixes. Major bugs fixed: - Compilation error introduced in previous changes resolved. - Alt UI mode toggle issue addressed. - General fixes (including lightweight fixes and stability improvements). Overall impact and accomplishments: - Significantly improved code maintainability and scalability through architectural refactors and centralized systems. - Enhanced player experience with reliable naming across clients, HP synchronization, and dynamic PlayerID handling. - Enabled designer-driven workflows via Stage Blueprint conversion and MappingContext scaffolding, improving iteration speed. - Reduced runtime lag and improved stability by removing a performance-limiting spawner and applying targeted fixes. Technologies/skills demonstrated: - Unreal Engine concepts: Blueprint conversion, replication (OnRep_Hp), RPCs, custom delegates, and heap allocation strategies. - Architecture and refactoring discipline: Clean separation of concerns among Manager, PlayerZone, and AttributeComponent. - Networking and multiplayer reliability: Client-server synchronization for player names and health. - Performance tuning: Spawner removal and stability-focused fixes; UI/UX mode toggles and mapping scaffolding.
February 2025 monthly summary for JaeSuGang/HeroesOfYggdrasil focusing on delivering a solid foundation and multiplayer-ready features. The month established project scaffolding, core architecture, and progression toward a playable pipeline, while stabilizing the codebase with essential bug fixes.
February 2025 monthly summary for JaeSuGang/HeroesOfYggdrasil focusing on delivering a solid foundation and multiplayer-ready features. The month established project scaffolding, core architecture, and progression toward a playable pipeline, while stabilizing the codebase with essential bug fixes.
Overview of all repositories you've contributed to across your timeline