
Hakan Sidenvall contributed to the Unity-Technologies/InputSystem repository by building and refining core input features, editor tooling, and cross-platform compatibility for Unity projects. He delivered platform-aware input polling, enhanced rebinding UI samples, and introduced real-time synchronization between editor components and runtime settings. Using C#, Unity Editor scripting, and conditional compilation, Hakan addressed complex integration issues, stabilized CI pipelines, and improved test coverage. His work included targeted bug fixes for XR input, keyboard handling, and Addressables compatibility, as well as internal refactoring to centralize runtime state checks. These efforts resulted in more reliable input workflows and maintainable code across Unity versions.

October 2025 monthly summary for Unity-Technologies/InputSystem: Focused on stabilizing core input workflows, expanding QA tooling, and enhancing UI customization. Delivered targeted features with a strong emphasis on reliability, test coverage, and developer experience to accelerate iteration and reduce risk across Unity version compatibility.
October 2025 monthly summary for Unity-Technologies/InputSystem: Focused on stabilizing core input workflows, expanding QA tooling, and enhancing UI customization. Delivered targeted features with a strong emphasis on reliability, test coverage, and developer experience to accelerate iteration and reduce risk across Unity version compatibility.
September 2025 monthly summary for Unity-Technologies/InputSystem: Stability and backward-compatibility improvement addressing a critical edge-case in Keyboard input handling. Implemented fix for null KeyControl in deprecated Key.IMESelected during enumeration of Keyboard.allKeys, preserving backward compatibility while guiding migration away from deprecated usage. Added comprehensive tests validating keyboard key lookups and enumeration to prevent regressions. Resulting changes reduce runtime exceptions, improve reliability across platforms, and strengthen maintainability of the Input System.
September 2025 monthly summary for Unity-Technologies/InputSystem: Stability and backward-compatibility improvement addressing a critical edge-case in Keyboard input handling. Implemented fix for null KeyControl in deprecated Key.IMESelected during enumeration of Keyboard.allKeys, preserving backward compatibility while guiding migration away from deprecated usage. Added comprehensive tests validating keyboard key lookups and enumeration to prevent regressions. Resulting changes reduce runtime exceptions, improve reliability across platforms, and strengthen maintainability of the Input System.
Concise monthly summary for August 2025: Platform-aware Input polling frequency feature implemented in Unity InputSystem to reduce latency and improve cross-platform compatibility; rebinding sample enhancements with dynamic labels and robust rebinding logic plus fixes for action propagation and UI display after scene reloads; overall impact: improved input responsiveness, stability, and developer experience; technologies demonstrated: platform-specific polling, feature flags, enhanced samples, and cross-version compatibility.
Concise monthly summary for August 2025: Platform-aware Input polling frequency feature implemented in Unity InputSystem to reduce latency and improve cross-platform compatibility; rebinding sample enhancements with dynamic labels and robust rebinding logic plus fixes for action propagation and UI display after scene reloads; overall impact: improved input responsiveness, stability, and developer experience; technologies demonstrated: platform-specific polling, feature flags, enhanced samples, and cross-version compatibility.
June 2025 monthly summary for Unity Input System: - Key features delivered and major bugs fixed, with a focus on business value and code quality. - Notable work includes a targeted internal refactor to centralize runtime state checks and a fix to stabilize UI tests for InputActionsEditor. - Impact spans improved CI reliability, maintainability, and developer velocity.
June 2025 monthly summary for Unity Input System: - Key features delivered and major bugs fixed, with a focus on business value and code quality. - Notable work includes a targeted internal refactor to centralize runtime state checks and a fix to stabilize UI tests for InputActionsEditor. - Impact spans improved CI reliability, maintainability, and developer velocity.
April 2025 monthly summary for Unity-Technologies/InputSystem. Focused on reliability and discoverability of action names in the Input System. Delivered a targeted bug fix to FindAction to support actions whose names contain slashes, addressing developer and user reports and preventing hidden breakages in action lookup. Added comprehensive tests to validate slash-containing action names and guard against regressions. Resulted in a more robust InputActionAsset and improved developer confidence for action-based workflows.
April 2025 monthly summary for Unity-Technologies/InputSystem. Focused on reliability and discoverability of action names in the Input System. Delivered a targeted bug fix to FindAction to support actions whose names contain slashes, addressing developer and user reports and preventing hidden breakages in action lookup. Added comprehensive tests to validate slash-containing action names and guard against regressions. Resulted in a more robust InputActionAsset and improved developer confidence for action-based workflows.
March 2025: Delivered reliability enhancements for XR input and introduced quantitative performance diagnostics in the Input System. The work focused on two major areas: stabilizing TrackedPoseDriver behavior when XR tracking is unavailable, and expanding the Input Debugger with achievable frequency and latency metrics to accelerate debugging and optimization of input pipelines.
March 2025: Delivered reliability enhancements for XR input and introduced quantitative performance diagnostics in the Input System. The work focused on two major areas: stabilizing TrackedPoseDriver behavior when XR tracking is unavailable, and expanding the Input Debugger with achievable frequency and latency metrics to accelerate debugging and optimization of input pipelines.
February 2025: Key reliability improvement in Unity Input System. Implemented real-time synchronization between the Parameter Editor and Input Settings, ensuring the editor reflects changes to Input Settings automatically and refreshes values via new callbacks. This reduces manual refresh needs and prevents misalignment between editor state and runtime configuration.
February 2025: Key reliability improvement in Unity Input System. Implemented real-time synchronization between the Parameter Editor and Input Settings, ensuring the editor reflects changes to Input Settings automatically and refreshes values via new callbacks. This reduces manual refresh needs and prevents misalignment between editor state and runtime configuration.
January 2025 — Unity-Technologies/InputSystem: Delivered a critical compatibility patch to ensure Input System works smoothly with Addressables across Unity editor versions and platforms. The fix resolves a compilation error caused by an undefined IInputAnalytic.TryGatherData when Addressables and Input System are used together by gating the code with conditional compilation. This change prevents build failures, stabilizes cross-package integration, and reduces downstream troubleshooting for developers.
January 2025 — Unity-Technologies/InputSystem: Delivered a critical compatibility patch to ensure Input System works smoothly with Addressables across Unity editor versions and platforms. The fix resolves a compilation error caused by an undefined IInputAnalytic.TryGatherData when Addressables and Input System are used together by gating the code with conditional compilation. This change prevents build failures, stabilizes cross-package integration, and reduces downstream troubleshooting for developers.
December 2024: Focused on improving developer experience and CI reliability for the Unity Input System. Delivered targeted documentation enhancements and a CI stability fix that reduces asset reimport-related build failures, contributing to faster onboarding, smoother releases, and higher maintainability of the InputSystem repo.
December 2024: Focused on improving developer experience and CI reliability for the Unity Input System. Delivered targeted documentation enhancements and a CI stability fix that reduces asset reimport-related build failures, contributing to faster onboarding, smoother releases, and higher maintainability of the InputSystem repo.
November 2024 monthly performance summary for Unity InputSystem. Focused on enhancing developer experience, improving sample robustness, and cleaning CI/test surfaces. Delivered auto-generated XML documentation for source-generated C# classes produced from input action assets, and enhanced the GamepadVisualizer sample to reflect the active device and handle device disconnects more gracefully. Completed targeted test suite cleanup to resolve a compile-time warning by removing a duplicate using statement.
November 2024 monthly performance summary for Unity InputSystem. Focused on enhancing developer experience, improving sample robustness, and cleaning CI/test surfaces. Delivered auto-generated XML documentation for source-generated C# classes produced from input action assets, and enhanced the GamepadVisualizer sample to reflect the active device and handle device disconnects more gracefully. Completed targeted test suite cleanup to resolve a compile-time warning by removing a duplicate using statement.
In Oct 2024, the InputSystem work focused on stabilizing the Input Action Editor UX by addressing a right-click context menu issue and ensuring consistent context menu behavior. No new features were shipped this month; the emphasis was on reliability and UX polish for editor actions.
In Oct 2024, the InputSystem work focused on stabilizing the Input Action Editor UX by addressing a right-click context menu issue and ensuring consistent context menu behavior. No new features were shipped this month; the emphasis was on reliability and UX polish for editor actions.
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