tier4/scenario_simulator_v2
Oct 2024 – Dec 2025
9 Months active
Languages Used
C++CMakePythonShellMarkdownRSTXMLYAML
Technical Skills
C++ developmentC++ programmingcode refactoringsimulation developmentsoftware engineeringvehicle dynamics
Dawid Moszynski
PROFILE
Dawid Moszynski
Dawid Moszynski contributed to the tier4/scenario_simulator_v2 repository, focusing on simulation fidelity, code quality, and robust infrastructure for autonomous driving scenarios. He engineered advanced 3D motion and trajectory-following logic, refactored lanelet-based map handling, and improved API consistency to support safer, more accurate simulations. Using C++ and ROS 2, Dawid enhanced concurrency safety, memory management, and error handling, while introducing validation suites and structured logging for maintainability. His work included integrating new features, refining core logic, and addressing complex bugs, resulting in a more reliable, testable, and scalable simulation platform that accelerates development and reduces deployment risk.
Overall Statistics
Feature vs Bugs
54%Features
Repository Contributions
109Total
Bugs
27
Commits
109
Features
32
Lines of code
22,523
Activity Months9
Your Network
58 peopleShared Repositories
30
Work History
December 2025
8 Commits • 2 Features
Dec 1, 2025December 2025 performance summary for tier4/scenario_simulator_v2: Delivered a major upgrade to trajectory following and waypoint control with a sliding-window two-waypoint model, improved simulation fidelity, and more robust validation and logging. Refactored FollowWaypointController to manage full entity state and acceleration with a new PredictedEntityStatus model, enabling more realistic 3D motion and distance-along-lanelet calculations. Implemented comprehensive validation suites, structured logging, and verbose state diagnostics to improve debuggability and reliability. Also performed targeted code quality improvements, clang-format fixes, and naming clarifications to raise maintainability and reduce future technical debt. Result: higher-fidelity simulations, improved control responsiveness, and a solid foundation for safer, faster iteration on autonomous behaviors.
8 Commits • 2 Features
Dec 1, 2025December 2025 performance summary for tier4/scenario_simulator_v2: Delivered a major upgrade to trajectory following and waypoint control with a sliding-window two-waypoint model, improved simulation fidelity, and more robust validation and logging. Refactored FollowWaypointController to manage full entity state and acceleration with a new PredictedEntityStatus model, enabling more realistic 3D motion and distance-along-lanelet calculations. Implemented comprehensive validation suites, structured logging, and verbose state diagnostics to improve debuggability and reliability. Also performed targeted code quality improvements, clang-format fixes, and naming clarifications to raise maintainability and reduce future technical debt. Result: higher-fidelity simulations, improved control responsiveness, and a solid foundation for safer, faster iteration on autonomous behaviors.
December 2025
October 2025
1 Commits • 1 Features
Oct 1, 2025Month: 2025-10 — Focused on code quality and maintainability in tier4/scenario_simulator_v2. Delivered a non-functional Code Style Cleanup for ego_entity_simulation.cpp via clang-format, establishing a consistent formatting baseline and reducing future review diffs. This work enhances readability, simplifies onboarding, and prepares the codebase for upcoming feature work. No major bugs fixed this month; impact is improved stability and acceleration of future development.
October 2025
1 Commits • 1 Features
Oct 1, 2025Month: 2025-10 — Focused on code quality and maintainability in tier4/scenario_simulator_v2. Delivered a non-functional Code Style Cleanup for ego_entity_simulation.cpp via clang-format, establishing a consistent formatting baseline and reducing future review diffs. This work enhances readability, simplifies onboarding, and prepares the codebase for upcoming feature work. No major bugs fixed this month; impact is improved stability and acceleration of future development.
September 2025
4 Commits • 2 Features
Sep 1, 2025September 2025 (tier4/scenario_simulator_v2) – Monthly performance summary focusing on business value and technical achievements. Key features delivered: - Concealer Module Service Readiness Enhancements: added availability_timeout for service clients, exception handling on timeout, updated default QoS profile, and a cleanup/refactor of readiness checks to simplify logic. Commits: dbce94a83d34bb8c1b4cff7f0a9d6ecb9f8c8dd5; dd641c06dbd02b326f6e7683e0b8833076eae715. - Simple Sensor Simulator Steering Overwrite Enhancement: refactored steering calculation overwrite to be robust when velocity is near zero; added a wheel_base parameter to improve steering angle accuracy. Commit: 333c423cd8fd294a77cc87f1b0c75f39c5bbd3bb. Major bugs fixed: - TaskQueue Reliability Bug Fixes: ensured TaskQueue initializes finalization state and exception handling before dispatcher thread starts to prevent race conditions and improve reliability. Commit: 4968be734fa9c6c1cb77dc03eac591fe36c376c8. Overall impact and accomplishments: - Increased reliability of the Concealer readiness workflow and TaskQueue dispatch, reducing race-condition exposure and time-to-stability in deployments. Improved simulation fidelity for steering at low speeds, enabling more accurate scenario testing and safer deployments. Technologies/skills demonstrated: - Concurrency safety, readiness and QoS configuration, robust exception handling, and targeted refactors to simplify logic and improve maintainability.
4 Commits • 2 Features
Sep 1, 2025September 2025 (tier4/scenario_simulator_v2) – Monthly performance summary focusing on business value and technical achievements. Key features delivered: - Concealer Module Service Readiness Enhancements: added availability_timeout for service clients, exception handling on timeout, updated default QoS profile, and a cleanup/refactor of readiness checks to simplify logic. Commits: dbce94a83d34bb8c1b4cff7f0a9d6ecb9f8c8dd5; dd641c06dbd02b326f6e7683e0b8833076eae715. - Simple Sensor Simulator Steering Overwrite Enhancement: refactored steering calculation overwrite to be robust when velocity is near zero; added a wheel_base parameter to improve steering angle accuracy. Commit: 333c423cd8fd294a77cc87f1b0c75f39c5bbd3bb. Major bugs fixed: - TaskQueue Reliability Bug Fixes: ensured TaskQueue initializes finalization state and exception handling before dispatcher thread starts to prevent race conditions and improve reliability. Commit: 4968be734fa9c6c1cb77dc03eac591fe36c376c8. Overall impact and accomplishments: - Increased reliability of the Concealer readiness workflow and TaskQueue dispatch, reducing race-condition exposure and time-to-stability in deployments. Improved simulation fidelity for steering at low speeds, enabling more accurate scenario testing and safer deployments. Technologies/skills demonstrated: - Concurrency safety, readiness and QoS configuration, robust exception handling, and targeted refactors to simplify logic and improve maintainability.
September 2025
July 2025
5 Commits • 1 Features
Jul 1, 2025July 2025 (2025-07) performance summary for tier4/scenario_simulator_v2 focused on robustness and reliability of the Lanelet loader, with safer defaults and explicit config validation. The work reduces risk of misconfiguration, improves runtime stability, and lowers memory overhead through a refactor that emphasizes const-correctness and reduced allocations.
July 2025
5 Commits • 1 Features
Jul 1, 2025July 2025 (2025-07) performance summary for tier4/scenario_simulator_v2 focused on robustness and reliability of the Lanelet loader, with safer defaults and explicit config validation. The work reduces risk of misconfiguration, improves runtime stability, and lowers memory overhead through a refactor that emphasizes const-correctness and reduced allocations.
April 2025
17 Commits • 3 Features
Apr 1, 2025April 2025 monthly summary for tier4/scenario_simulator_v2: Delivered significant Agnocast integration improvements across simple_sensor_simulator and agnocast_wrapper, including build/run configuration changes, refactored subscription/publisher template helpers, and improvements to odometry handling and test environment related to Agnocast. Enabled packaging independence for the agnocast_wrapper package with a new build option, explicit versioning, changelog/metadata updates, and package configuration adjustments to support lighter, more reliable releases. Updated documentation to reflect architecture types and V2I interfaces, ensuring alignment on supported message types and interfaces. Performed code quality improvements and housekeeping, including formatting fixes, spell-check updates, and targeted bug fixes that stabilized tests and build pipelines. Overall, these efforts reduce deployment friction, improve test reliability, and support cleaner, faster iterations.
17 Commits • 3 Features
Apr 1, 2025April 2025 monthly summary for tier4/scenario_simulator_v2: Delivered significant Agnocast integration improvements across simple_sensor_simulator and agnocast_wrapper, including build/run configuration changes, refactored subscription/publisher template helpers, and improvements to odometry handling and test environment related to Agnocast. Enabled packaging independence for the agnocast_wrapper package with a new build option, explicit versioning, changelog/metadata updates, and package configuration adjustments to support lighter, more reliable releases. Updated documentation to reflect architecture types and V2I interfaces, ensuring alignment on supported message types and interfaces. Performed code quality improvements and housekeeping, including formatting fixes, spell-check updates, and targeted bug fixes that stabilized tests and build pipelines. Overall, these efforts reduce deployment friction, improve test reliability, and support cleaner, faster iterations.
April 2025
January 2025
18 Commits • 4 Features
Jan 1, 2025Monthly summary for 2025-01 focused on delivering a reliable API, improved lanelet pose handling, solar-mode support, and code safety improvements in tier4/scenario_simulator_v2. The month emphasized aligning test runners and mocks with API changes, tightening pose/orientation logic, and strengthening code hygiene to reduce risk and maintenance burden.
January 2025
18 Commits • 4 Features
Jan 1, 2025Monthly summary for 2025-01 focused on delivering a reliable API, improved lanelet pose handling, solar-mode support, and code safety improvements in tier4/scenario_simulator_v2. The month emphasized aligning test runners and mocks with API changes, tightening pose/orientation logic, and strengthening code hygiene to reduce risk and maintenance burden.
December 2024
46 Commits • 16 Features
Dec 1, 2024December 2024 monthly summary for tier4/scenario_simulator_v2 focusing on delivering a robust lanelet-based infrastructure and stabilization across the simulator stack.
46 Commits • 16 Features
Dec 1, 2024December 2024 monthly summary for tier4/scenario_simulator_v2 focusing on delivering a robust lanelet-based infrastructure and stabilization across the simulator stack.
December 2024
November 2024
8 Commits • 2 Features
Nov 1, 2024Concise monthly summary for 2024-11 focusing on delivering business value and technical excellence in tier4/scenario_simulator_v2. The month centered on feature delivery for simulation fidelity, stability improvements in traffic light infrastructure, and safety enhancements in planning components.
November 2024
8 Commits • 2 Features
Nov 1, 2024Concise monthly summary for 2024-11 focusing on delivering business value and technical excellence in tier4/scenario_simulator_v2. The month centered on feature delivery for simulation fidelity, stability improvements in traffic light infrastructure, and safety enhancements in planning components.
October 2024
2 Commits • 1 Features
Oct 1, 2024Monthly summary for 2024-10: Tier4 scenario simulator v2 - consolidated bug fix and code quality refinements. Key outcomes include an accurate ego overwrite state for the DELAY_STEER_ACC_GEARED_WO_FALL_GUARD model and a readability/formatting refactor using clang-format, improving maintainability and onboarding.
2 Commits • 1 Features
Oct 1, 2024Monthly summary for 2024-10: Tier4 scenario simulator v2 - consolidated bug fix and code quality refinements. Key outcomes include an accurate ego overwrite state for the DELAY_STEER_ACC_GEARED_WO_FALL_GUARD model and a readability/formatting refactor using clang-format, improving maintainability and onboarding.
October 2024
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Quality Metrics
Correctness89.4%
Maintainability90.2%
Architecture86.4%
Performance82.8%
AI Usage20.8%
Skills & Technologies
Programming Languages
C++CMakeMarkdownPythonRSTShellXMLYAML
Technical Skills
3D motion simulationAPI DesignAPI IntegrationAutonomous DrivingBehavior TreeBehavior TreesBug FixingBuild System ConfigurationBuild SystemsC++C++ DevelopmentC++ developmentC++ programmingCI/CDCMake
Repositories Contributed To
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