defold/defold
Nov 2024 – Oct 2025
12 Months active
Languages Used
CC++ClojureEDNJavaLuaProjectPython
Technical Skills
2D GraphicsBug FixingBuild SystemBuild System ConfigurationBuild SystemsCode Optimization
Alexey Gulev
PROFILE
Alexey Gulev
Andrey Gulev contributed to the defold/defold repository, delivering core engine and editor features that improved build performance, runtime stability, and developer productivity. He engineered parallelized image processing and dynamic GUI resource management, leveraging C++ and Lua to optimize memory usage and rendering order. Andrey addressed cross-platform build reliability, introduced telemetry tracking, and enhanced asset handling with robust error management and resource validation. His work included updating SDKs, refining the build system, and implementing autosave and camera toolkit improvements. Through careful debugging, code refactoring, and system integration, Andrey consistently delivered maintainable solutions that streamlined workflows and supported reliable multi-platform releases.
Overall Statistics
Feature vs Bugs
51%Features
Repository Contributions
218Total
Bugs
72
Commits
218
Features
76
Lines of code
21,598
Activity Months12
Work History
October 2025
19 Commits • 7 Features
Oct 1, 2025Concise monthly summary for 2025-10 highlighting key features delivered, major bugs fixed, and business value.
19 Commits • 7 Features
Oct 1, 2025Concise monthly summary for 2025-10 highlighting key features delivered, major bugs fixed, and business value.
October 2025
September 2025
9 Commits • 7 Features
Sep 1, 2025September 2025 highlights for defold/defold: Delivered a targeted set of feature enhancements and stability fixes across the engine, boosting runtime reliability, rendering control, and developer productivity. Key outcomes include a new GUI layout API with auto layout options, a doubled per-collection instance limit, an immediate world transform update API with tests, new orthographic camera modes for dynamic view fitting, and render draw ordering control. Accompanying stability fixes address a console output synchronization race and a macOS Remotery linker issue, reducing debugging friction on critical platforms and workloads. These changes collectively enable larger scenes, more precise rendering, faster workflow, and improved debugging capabilities.
September 2025
9 Commits • 7 Features
Sep 1, 2025September 2025 highlights for defold/defold: Delivered a targeted set of feature enhancements and stability fixes across the engine, boosting runtime reliability, rendering control, and developer productivity. Key outcomes include a new GUI layout API with auto layout options, a doubled per-collection instance limit, an immediate world transform update API with tests, new orthographic camera modes for dynamic view fitting, and render draw ordering control. Accompanying stability fixes address a console output synchronization race and a macOS Remotery linker issue, reducing debugging friction on critical platforms and workloads. These changes collectively enable larger scenes, more precise rendering, faster workflow, and improved debugging capabilities.
August 2025
26 Commits • 9 Features
Aug 1, 2025Concise monthly summary for 2025-08 covering key features delivered, major bugs fixed, overall impact, and technologies demonstrated for defold/defold. Emphasis on business value, stability, and runtime improvements that enable faster development, more reliable releases, and richer runtime asset handling.
26 Commits • 9 Features
Aug 1, 2025Concise monthly summary for 2025-08 covering key features delivered, major bugs fixed, overall impact, and technologies demonstrated for defold/defold. Emphasis on business value, stability, and runtime improvements that enable faster development, more reliable releases, and richer runtime asset handling.
August 2025
July 2025
28 Commits • 5 Features
Jul 1, 2025July 2025 (defold/defold) focused on accelerating build times, shrinking binary sizes, and increasing release reliability across platforms. Delivered core build-system improvements (build-timestamp token, faster LiveUpdate builds, Bob optimizations for sequential builds, faster dependency resolution) with measurable binary-size reductions, and introduced a new LiveUpdate publisher mode (Folder). Enabled Android bundling compatibility with 16 KB page sizes, restored public API, and published 1.10.4 release notes to support smoother releases. Strengthened stability and CI reliability through Bob test hygiene and BuildTime tracker fixes, and addressed critical cross‑platform issues including Windows/Proton compatibility and rendering/memory fixes (vertex attributes memory leak, cubemap builder). Overall impact: faster release cycles, smaller deployments, and more robust builds for customers across Windows, Android, and Web targets.
July 2025
28 Commits • 5 Features
Jul 1, 2025July 2025 (defold/defold) focused on accelerating build times, shrinking binary sizes, and increasing release reliability across platforms. Delivered core build-system improvements (build-timestamp token, faster LiveUpdate builds, Bob optimizations for sequential builds, faster dependency resolution) with measurable binary-size reductions, and introduced a new LiveUpdate publisher mode (Folder). Enabled Android bundling compatibility with 16 KB page sizes, restored public API, and published 1.10.4 release notes to support smoother releases. Strengthened stability and CI reliability through Bob test hygiene and BuildTime tracker fixes, and addressed critical cross‑platform issues including Windows/Proton compatibility and rendering/memory fixes (vertex attributes memory leak, cubemap builder). Overall impact: faster release cycles, smaller deployments, and more robust builds for customers across Windows, Android, and Web targets.
June 2025
21 Commits • 6 Features
Jun 1, 2025June 2025 — Stability, performance, and developer productivity improvements across core engine and editor for defold/defold. Delivered critical bug fixes stabilizing runtime and editor workflows, introduced a tracker component for telemetry, and implemented memory/bandwidth optimizations for bone textures. These changes reduce crash surfaces, improve build reliability, and enable smoother runtime behavior for games and tooling.
21 Commits • 6 Features
Jun 1, 2025June 2025 — Stability, performance, and developer productivity improvements across core engine and editor for defold/defold. Delivered critical bug fixes stabilizing runtime and editor workflows, introduced a tracker component for telemetry, and implemented memory/bandwidth optimizations for bone textures. These changes reduce crash surfaces, improve build reliability, and enable smoother runtime behavior for games and tooling.
June 2025
May 2025
15 Commits • 4 Features
May 1, 2025May 2025 – Delivered performance, reliability, and developer productivity improvements for defold/defold. Key features: parallelized layout and image processing; dynamic GUI resource management with gui.set(); and GUI render order stabilization with world-specific sorting and 24-bit cap. Major fixes: profiling memory leak through optimized name handling; shader task rebuild robustness with module inputs; robust hash management across Lua lifetimes; editor log reliability and HTTP content length tracking; and build-system cleanup removing unsupported archive types. Overall impact: faster, more memory-efficient runtime, deterministic rendering, stable logs, and cleaner builds. Technologies demonstrated: parallel processing, runtime resource management, memory optimization, hash lifecycle management, and build/test tooling.
May 2025
15 Commits • 4 Features
May 1, 2025May 2025 – Delivered performance, reliability, and developer productivity improvements for defold/defold. Key features: parallelized layout and image processing; dynamic GUI resource management with gui.set(); and GUI render order stabilization with world-specific sorting and 24-bit cap. Major fixes: profiling memory leak through optimized name handling; shader task rebuild robustness with module inputs; robust hash management across Lua lifetimes; editor log reliability and HTTP content length tracking; and build-system cleanup removing unsupported archive types. Overall impact: faster, more memory-efficient runtime, deterministic rendering, stable logs, and cleaner builds. Technologies demonstrated: parallel processing, runtime resource management, memory optimization, hash lifecycle management, and build/test tooling.
April 2025
27 Commits • 11 Features
Apr 1, 2025April 2025 monthly summary for defold/defold focusing on business value and technical achievements. Key features delivered: - Faster LU archive creation and compression level option: performance improvement in LU archive creation; added option to configure compression level. (Commits: 42a5eb35f5f971791241e91b8ad0c6afdf4dd1ed) - Stable build without clean: Improve build stability by enabling stable builds without performing a clean. (Commits: 9bbd3404a4cd664b9ef968e935a0026346a354e1; f3d9837061710b4141617fa0b6e9b70e2b436367) - Add --keep-bob-uncompressed flag for development: speed up development for bob. (Commit: 8dc7645b6d4e95bc17ef383d0d1c7d41453b97ed) - Use unique identifiers for factory-spawned game objects: improve object management and debugging. (Commit: 3332ea22febc53822757c03ccdc2570d0626e288) - Provide bundle input data as build_input_data.json: visibility into bundle inputs during build. (Commit: 46a76c9bb331e1178555de6aaaa86f6559f385a0) Major bugs fixed: - ResetPoseMatrixCache called once per frame: fix multiple resets per frame, reducing CPU usage and ensuring consistency. (Commits: a0c732ae1894d16f25873aba1688ac4232645682; 1a75efed329133967e7479c33625c4d7de8aa7cf) - Fix memory leak in related components: address memory leaks reported in patch set. (Commits: 3ea457a1db6bf4555dedcdebcc50a4df4c4a07c8; fa8083a9ae3de105ee249789a4205e5e2dd3ca8b) - Lua nil check for go.delete(): return Lua error when nil is passed. (Commit: 2f04ce15eb986595059fea7102c9d58803367312) - Validate quaternion in GO or Collection and throw on error: ensure invalid quaternions are surfaced. (Commit: d182c35a4e68b0bee3234d79ddaea1caa6c9f65a) - Editor scale tool for rotated objects: fix the scale tool in editor for rotated objects. (Commit: 13eb213a9980e9822c4dcdd91003e41ce312958c) - Materials and hex digest issue: correct issues with materials and hex digests. (Commits: f70ece664e310be891315333846cac257f44bacc; 2635e62ec8e7a8d463a0ab465acee7eb89f65919) - Horizontal scrolling in text editor updated for code font size changes: ensure scrolling accounts for font size changes. (Commit: 6bf002cea2ff0068b5ec27b3e1da37b73cc26d11) - Detect unknown gamepads even if no gamepad specified: robust device detection. (Commit: 83d7de529e9fc7ef6307f8dc365c513df0937dd2) - Transformation gizmos disappear when Component Guides toggled: fix gizmo visibility with guides. (Commit: 0ac023981ae74c52311a3351967883eb23643259) - Clarify non-editable resources: make restrictions clearer. (Commit: 6166d96dd07ee3fc7d239ad12a3deb4019aa7200) - Improve error messages: provide better contextual information in errors. (Commit: df04b8c1b83fd25bb72f9c499c9b7ab0fb2840ac) - UI: Option to hide the Changed File panel: user experience improvement. (Commit: 952d4717743ab1ff9d1a14097ec3169278239f2b) Overall impact and accomplishments: - Significantly improved build performance, stability, and developer productivity across the main defold/defold workflow. Reduced build friction with stable builds without clean and faster asset/tool unpacking. Enhanced runtime reliability through memory leak fixes, input validation, and clearer error reporting. Improved developer UX via UI enhancements and better tool feedback. Enabled faster iteration cycles and more reliable releases with tangible time-to-market benefits. Technologies/skills demonstrated: - Performance optimization (LU archive creation, build stability), memory management (leaks), and resource validation (quaternions, go.delete). - Lua scripting and embedding-aware error handling improvements. - Build tooling enhancements and feature flag usage for development speedups. - UI/UX improvements and robust device/GPu selection logic. - Debugging, triage, and cross-component coordination across C++/Lua components.
27 Commits • 11 Features
Apr 1, 2025April 2025 monthly summary for defold/defold focusing on business value and technical achievements. Key features delivered: - Faster LU archive creation and compression level option: performance improvement in LU archive creation; added option to configure compression level. (Commits: 42a5eb35f5f971791241e91b8ad0c6afdf4dd1ed) - Stable build without clean: Improve build stability by enabling stable builds without performing a clean. (Commits: 9bbd3404a4cd664b9ef968e935a0026346a354e1; f3d9837061710b4141617fa0b6e9b70e2b436367) - Add --keep-bob-uncompressed flag for development: speed up development for bob. (Commit: 8dc7645b6d4e95bc17ef383d0d1c7d41453b97ed) - Use unique identifiers for factory-spawned game objects: improve object management and debugging. (Commit: 3332ea22febc53822757c03ccdc2570d0626e288) - Provide bundle input data as build_input_data.json: visibility into bundle inputs during build. (Commit: 46a76c9bb331e1178555de6aaaa86f6559f385a0) Major bugs fixed: - ResetPoseMatrixCache called once per frame: fix multiple resets per frame, reducing CPU usage and ensuring consistency. (Commits: a0c732ae1894d16f25873aba1688ac4232645682; 1a75efed329133967e7479c33625c4d7de8aa7cf) - Fix memory leak in related components: address memory leaks reported in patch set. (Commits: 3ea457a1db6bf4555dedcdebcc50a4df4c4a07c8; fa8083a9ae3de105ee249789a4205e5e2dd3ca8b) - Lua nil check for go.delete(): return Lua error when nil is passed. (Commit: 2f04ce15eb986595059fea7102c9d58803367312) - Validate quaternion in GO or Collection and throw on error: ensure invalid quaternions are surfaced. (Commit: d182c35a4e68b0bee3234d79ddaea1caa6c9f65a) - Editor scale tool for rotated objects: fix the scale tool in editor for rotated objects. (Commit: 13eb213a9980e9822c4dcdd91003e41ce312958c) - Materials and hex digest issue: correct issues with materials and hex digests. (Commits: f70ece664e310be891315333846cac257f44bacc; 2635e62ec8e7a8d463a0ab465acee7eb89f65919) - Horizontal scrolling in text editor updated for code font size changes: ensure scrolling accounts for font size changes. (Commit: 6bf002cea2ff0068b5ec27b3e1da37b73cc26d11) - Detect unknown gamepads even if no gamepad specified: robust device detection. (Commit: 83d7de529e9fc7ef6307f8dc365c513df0937dd2) - Transformation gizmos disappear when Component Guides toggled: fix gizmo visibility with guides. (Commit: 0ac023981ae74c52311a3351967883eb23643259) - Clarify non-editable resources: make restrictions clearer. (Commit: 6166d96dd07ee3fc7d239ad12a3deb4019aa7200) - Improve error messages: provide better contextual information in errors. (Commit: df04b8c1b83fd25bb72f9c499c9b7ab0fb2840ac) - UI: Option to hide the Changed File panel: user experience improvement. (Commit: 952d4717743ab1ff9d1a14097ec3169278239f2b) Overall impact and accomplishments: - Significantly improved build performance, stability, and developer productivity across the main defold/defold workflow. Reduced build friction with stable builds without clean and faster asset/tool unpacking. Enhanced runtime reliability through memory leak fixes, input validation, and clearer error reporting. Improved developer UX via UI enhancements and better tool feedback. Enabled faster iteration cycles and more reliable releases with tangible time-to-market benefits. Technologies/skills demonstrated: - Performance optimization (LU archive creation, build stability), memory management (leaks), and resource validation (quaternions, go.delete). - Lua scripting and embedding-aware error handling improvements. - Build tooling enhancements and feature flag usage for development speedups. - UI/UX improvements and robust device/GPu selection logic. - Debugging, triage, and cross-component coordination across C++/Lua components.
April 2025
March 2025
18 Commits • 7 Features
Mar 1, 2025In March 2025, the Defold project delivered a set of high-impact features and reliability improvements across manifest handling, the build system, reporting, and platform-specific bundling, while strengthening observability and performance. The work focused on business value—faster builds, more reliable releases, and better traceability of engine versions and assets.
March 2025
18 Commits • 7 Features
Mar 1, 2025In March 2025, the Defold project delivered a set of high-impact features and reliability improvements across manifest handling, the build system, reporting, and platform-specific bundling, while strengthening observability and performance. The work focused on business value—faster builds, more reliable releases, and better traceability of engine versions and assets.
February 2025
10 Commits • 3 Features
Feb 1, 2025February 2025 (Month: 2025-02) - Key features delivered and major fixes across defold/defold, focusing on release readiness, cross-platform build reliability, and build system efficiency. Highlights include: Release Version Bump to 1.9.8; Android build page-size hardening; Build system refactor for parallel builds and cache efficiency; HTML5 build enhancements with Lua error reporting; iOS URL handling fix.
10 Commits • 3 Features
Feb 1, 2025February 2025 (Month: 2025-02) - Key features delivered and major fixes across defold/defold, focusing on release readiness, cross-platform build reliability, and build system efficiency. Highlights include: Release Version Bump to 1.9.8; Android build page-size hardening; Build system refactor for parallel builds and cache efficiency; HTML5 build enhancements with Lua error reporting; iOS URL handling fix.
February 2025
January 2025
23 Commits • 10 Features
Jan 1, 2025Monthly summary for 2025-01 (defold/defold). Focused on stability, developer experience, and platform readiness. Delivered targeted caching improvements, build reliability fixes, UX enhancements for GUI templating, and proactive tooling updates to align with latest SDKs. Implemented resilience for notarization and prepared the codebase for smoother releases, contributing to faster, more reliable builds and releases.
January 2025
23 Commits • 10 Features
Jan 1, 2025Monthly summary for 2025-01 (defold/defold). Focused on stability, developer experience, and platform readiness. Delivered targeted caching improvements, build reliability fixes, UX enhancements for GUI templating, and proactive tooling updates to align with latest SDKs. Implemented resilience for notarization and prepared the codebase for smoother releases, contributing to faster, more reliable builds and releases.
December 2024
4 Commits • 2 Features
Dec 1, 2024December 2024: Enhanced developer productivity and deployment reliability for defold/defold. Delivered user-facing customization with custom project templates, improved LiveUpdate packaging options, and resolved critical stability bugs affecting GUI properties and collection-instance calculations. These changes reduce setup time, streamline distribution workflows, and increase runtime robustness across projects.
4 Commits • 2 Features
Dec 1, 2024December 2024: Enhanced developer productivity and deployment reliability for defold/defold. Delivered user-facing customization with custom project templates, improved LiveUpdate packaging options, and resolved critical stability bugs affecting GUI properties and collection-instance calculations. These changes reduce setup time, streamline distribution workflows, and increase runtime robustness across projects.
December 2024
November 2024
18 Commits • 5 Features
Nov 1, 20242024-11: Focused on reliability, rendering accuracy, and developer experience. Delivered a new logging verbosity control (project.minimum_log_level) with default log level fixes to improve diagnostics; hardened build robustness with LuaJIT crash retry and standardized error reporting; corrected pivot-point handling for sprites and textures to ensure accurate positioning and animation; reduced distribution footprint by removing rarely used platforms and streamlining tools; and enhanced Editor/Build UX with Engine Arguments editor, Scene View Grid/Guides toggles, and an updated HTML5 build option for faster, more configurable builds.
November 2024
18 Commits • 5 Features
Nov 1, 20242024-11: Focused on reliability, rendering accuracy, and developer experience. Delivered a new logging verbosity control (project.minimum_log_level) with default log level fixes to improve diagnostics; hardened build robustness with LuaJIT crash retry and standardized error reporting; corrected pivot-point handling for sprites and textures to ensure accurate positioning and animation; reduced distribution footprint by removing rarely used platforms and streamlining tools; and enhanced Editor/Build UX with Engine Arguments editor, Scene View Grid/Guides toggles, and an updated HTML5 build option for faster, more configurable builds.
Activity
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Quality Metrics
Correctness87.4%
Maintainability85.6%
Architecture82.4%
Performance77.8%
AI Usage20.0%
Skills & Technologies
Programming Languages
BatchCC++CSSClojureCollectionEDNGLSLGoGradle
Technical Skills
2D Graphics3D Graphics3D Math3D Model Loading3D Model ProcessingAPI DesignAPI DevelopmentAccessibilityAlgorithm OptimizationAndroid DevelopmentAnimation IntegrationApplication State ManagementArchive ManagementAspect Ratio HandlingAsset Management
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline