Don Lee Email & Phone Number

Seoul, South Korea

Flight Simulation Software, Unreal Engine 5, C++MapTool -Converted mesh vertex coordinates based on the Earth coordinate system -Resolved floating-point precision gap issues related to coordinate transformationJoystick Aircraft Control -Controlled aircraft movement and attitude based on a joystick controller -Managed quaternion-based rotation controls and resolve gimbal lock issuesOptimization and Multithreading Stabilization -Optimized multithreaded performance for camera sensor render targets -Resolved multithreading inter-corruption issues within the projectGame Operation on Linux Platform -Resolved various third-party library Linux build issues

Bundang-Dong, Gyeonggi, South Korea

Car Games, Autonomous Driving Simulation, Unreal Engine 5, C++Autonomous Sensor Functions, Data Visualization ImplementationDevelopment of Sensor Features: Lidar, Radar, IMU, RGB Camera -Sensor Implementation Based on CPU Parallel ProcessingLidar Sensor, Creation of RayTracing Custom Global Shader for Laser-based Sensors Optimization -Reference: https://www.youtube.com/watch?v=2SFRx4j2N7k -360degree Around 2,000,000/sec Ray Treat -Z-Reversed Matrix based Capture 3D Projection RayRadar Sensor, Circle Arc Angle Front Detection, Object Velocity ProcessingGyroscope Sensor2023 Korea Electronics Show, Autonomous Driving Simulation Exhibit

대한민국 경기도 분당동

mmorpg, ProjectG, C#, C++, Navigation, Unity 2021ltsNavigation (Recast Detour) and Base Movement Server-Client Implementation -Porting and Application of Recast Detour C++ Library Project(Recast Ref : https://github.com/recastnavigation/recastnavigation) -C++ <-> C# Interlanguage Serialization Buffer Communication -Navigation-based Movement Processing for All Units on Server-Client -Navigation Build Production Tool -NPC Spawn Circle Radius Random Distribution Applied Equally -Implementation of Navi based Moving Skill ActionsLevel Map Tool Creation

Seongnam, Gyeonggi, South Korea

Unreal Engine 4, Unreal Engine 3, C++, FPS, Engine Client ResponsibilityCrossfire UE3 Project -Various attempts to stabilize due to device loss issues in UE3 based on DirectX9CrossfireX UE4 Project -Identification and improvement of performance degradation causes under high instantaneous load -Online Store on Game Lobby

Seongnam, Gyeonggi, South Korea

Unity, C#, Map Tool Creation, AR Mode Development, 3 Matching Puzzle GameMap Tool Creation -Stage Creation Tool -Automation and Mapping of Batch Unit Texture BuildsAR Mode DevelopmentOutline Shader Improvement -Replacement with Smooth Normal Outline Shader due to Existing Outline Breakage Issues

Seongnam, Gyeonggi-Do, Korea

Round8 Team Bless Unleashed Project Engine Team, Unreal Engine 4, C++, C#, Console, MMORPG, North American ReleaseNPC Character Creation and Editing Tool Development-Character Customization (Deformation, Material, Parts) Property Editing Tool-Mesh Merge Asset Saving Function for Individual Character Parts-Commandlet Iteration for Mesh Merge Tool Function Across All NPC AssetsMain Character Customization Tool CreationAnimation Viewer Tool Development -Purpose of Checking Sequential Actions and Root Motions by Part Equipment SettingsWorld Mesh Merge (Hierarchical Instanced Static Mesh) Tool Customization -Automatic World Mesh Merge Tool Customization in Unreal Level EditorVolumetric Clouds -1/3 Computational Speed Optimization Improvement -Solving Cloud Rendering Cracking Issues in Dynamic Resolution -Resolution of Stratus Cloud Texture Pattern Issues -Addition of Cloud Art Control ParametersLevel Streaming Environment Volume -Interpolation of Environmental Parameters for Smooth Transition Between Environment Volumes When Switching LevelsUnreal Indirect Lighting Cache (Volumetric Lightmap) Enhancement -Solving Dynamic Mesh Rendering Issues on Xbox OneUnreal Hair Shading Improvement -Solving Light Emission Issues in Hair Areas of 1/5 UnitsClient and Engine Computational Load Optimization e.g., RenderTargetPool, FString, etc.Dialogue Tool Development - Dialogue Tree View and C# Editing ToolQuest Editing Tool Creation - Quest Condition Goals Table View and C# Editing ToolContinuous Stabilization Work Before and After ReleaseRelease Ref: https://www.youtube.com/results?search_query=bless+unleashed

Seoul, South Korea

Baseball Game, Baseball Pitching Game Development, Unity, C#, Mecanim, PCDevelopment of Strike Zone Pitching Mode -Calculation of ball direction and speed values from object movement sensors for in-game judgment metrics -Creation of Pitching Mode Defensive (Catcher, Pitcher, Left/Right Fielder) Action Events and Judgments -Development of Pitching Mode Cinematics and UI Features -Creation of Animation Motion Interpolation, Judgments, and Events Based on Catcher Position -Kiosk Client Development -Optimization and Handling of Reported Errors During ServiceImplementation of Real-Time Video Recording and Game Video Composition in-game using ffmpegRelease Reference: https://www.youtube.com/results?search_query=스트라이크존+피칭

Guro-Gu, Seoul, Korea

MORPG Puzzle, Dynamic Loading, Patch System, Optimization, Unity 4, C#, MobileImplementation of Dynamic Resource Loading and Dynamic Placement -Separation of Execution and Resources, Dynamic Placement During Scene LoadingDevelopment of Patch and Patch Automation EditorClient Network Stabilization and Improvement -Post-Connection Loss Handling and Subsequent Game Continuity ProcessingImplementation of Auto-Battle Based on Damage Priority WeightingOptimization of Game Loading Time and MemoryRelease Reference : http://www.hungryapp.co.kr/bbs/list.php?bcode=cubestriker

Gangnam-Gu, Seoul, Korea

AOS Genre, Skill Development, Shader, Tool Creation, Unity 4, C#, PCFSM Character Skill Action Controller Development -Character Skill CreationCharacter Animation Tool Development -Editing Character Animation Flow: Metrics, Speed, Skill Flow, and Blending Parameters -Mounting Specific Parts and EffectsCustomization of Collision Detection -Custom Action Collision Detection: Sequential Control of Multiple Colliders per Skill -Improved Collision Detection for Projectiles (Addressing Issues with Projectiles Occasionally Passing Through Objects)World Mesh Merging -Merging All World Meshes per Hierarchy in the Game (Improved from 5000 to 300 DC)Customization of Unity Internal Light Shader’s Attenuation Lighting -Implementation of External Parameter-Controlled Lighting Shader Attenuation Computation Reference: https://blog.naver.com/egohim/70143384869Effect Customization -Creation of Parameter-Controlled Effects (e.g., Particle Effects, Sword Effects) Based on Start and End SettingsUI Development -Mini-map Coordinate Transformation, Health Bars, Game Time, Score, Skill Cooldown Implementation

Seongnam, Gyeonggi, South Korea

Defense Game, Pathfinder, Level Tool, PS3, C++, Mobile, Unity, C#PS3 Research and Prototype Development -Developed PS3 Prototype Using PS3’s Own Engine for Unit Movement and Collision DetectionPathfinder Creation and Ground Unit Movement -Manual Implementation of A* Pathfinding Due to Lack of Unity Pathfinding Features at the Time -Development of Ground Unit Movement Based on Pathfinding -Collision Handling Between Ground Units During Pathfinding MovementDevelopment Reference: http://blog.naver.com/egohim/70103894518Aerial Unit Movement Development -Development of Aerial Unit Movement Using Bezier CurvesLevel Tool Development -Creation of a Grid-Based Tool for A* Movement and Aerial Unit Path Creation for Each StageEffect Development -Implementation of Projectile, Laser, and Trail Renderer (Sword Effects)Release Ref : https://www.youtube.com/results?search_query=디펜스테크니카

Seocho-Gu, Seoul, Korea

Webzen Engine R&D Team, Proprietary EngineMMORPG, Engine Team, Proprietary Engine, Used in 3 In-House Projects, DirectX9, C++, MFCEngine Optimization -Optimized bottleneck functions by prioritizing deferred functions -Reduced bottleneck of searching by unit type per Octree node each frame by using array index access -Optimized calculations and frequency of collision checks between nearby units -Extended life cycle for memory release types -Optimized animation keyframe displacement storage, reducing memory usage by 50% compared to the previous implementation (1/4 of memory usage)Lightmap Build Development -Developed sub-calculations, light and shadow calculations, K-D Tree, Ray Tracing, Rasterization, Image Packing, and output, including speed optimization algorithms -Integrated Lightmap Build Editing Tool into the Engine World ToolDevelopment Reference : https://blog.naver.com/egohim/70032187313Webzen MU Online Team, ClientMMORPG, Proprietary Engine, C++, OpenGL, MFCOptimization -Added Profiler -Reduced Loading Time from 40 Seconds to 20 Seconds -Optimized GL FunctionsStabilization -Fixed Memory Leaks Across the Board Due to Intermittent Crash ReportsDeveloped MU Season 5 Client -Created Boss with 3 Phases and Sword Skills Like "Ignium Blade" (Hand-Coded)Shader-Based Rendering Development

Bachelor'S Degree, Computer Science, 4

Computer/Information Technology