simulationcraft/simc
Nov 2024 – Oct 2025
11 Months active
Languages Used
C++Python
Technical Skills
C++C++ DevelopmentClass BalancingGame DevelopmentSimulationSpell Mechanics
Vít Šefl
PROFILE
Vít Šefl
Vitus Cze contributed to the simulationcraft/simc repository by engineering and refining Mage class simulation systems over 11 months, delivering 48 features and resolving 29 bugs. He architected modular Mage modules, implemented set bonus logic, and tuned spell mechanics to align with evolving game patches. Using C++ and Python, Vitus enhanced simulation accuracy through targeted bug fixes, performance optimizations, and code refactoring, such as improving damage scaling, buff handling, and cooldown logic. His work emphasized maintainability and reliability, enabling faster iteration and robust patch readiness. The depth of his contributions ensured realistic, data-driven modeling for both developers and end users.
Overall Statistics
Feature vs Bugs
62%Features
Repository Contributions
107Total
Bugs
29
Commits
107
Features
48
Lines of code
31,951
Activity Months11
Your Network
36 peopleWork History
October 2025
2 Commits • 1 Features
Oct 1, 2025October 2025: Focused delivery on Mage-related accuracy and performance within simulationcraft/simc. Delivered a critical bug fix that corrects the Mage base spell damage multiplier double-application and a performance-oriented Ignite target data retrieval refactor by removing a PTR check and simplifying data access. These changes improve simulation reliability, accuracy, and runtime efficiency for end users performing gear and talent optimizations.
2 Commits • 1 Features
Oct 1, 2025October 2025: Focused delivery on Mage-related accuracy and performance within simulationcraft/simc. Delivered a critical bug fix that corrects the Mage base spell damage multiplier double-application and a performance-oriented Ignite target data retrieval refactor by removing a PTR check and simplifying data access. These changes improve simulation reliability, accuracy, and runtime efficiency for end users performing gear and talent optimizations.
October 2025
September 2025
2 Commits • 1 Features
Sep 1, 2025September 2025 (Month: 2025-09) focused on refining the simulation accuracy and enabling future scaling adjustments for mage-related damage in the PTR cycle. Implemented targeted changes in the simc engine to support more precise damage scaling and ensure alignment with patch expectations, while maintaining clear commit-level traceability for faster reviews and rollbacks.
September 2025
2 Commits • 1 Features
Sep 1, 2025September 2025 (Month: 2025-09) focused on refining the simulation accuracy and enabling future scaling adjustments for mage-related damage in the PTR cycle. Implemented targeted changes in the simc engine to support more precise damage scaling and ensure alignment with patch expectations, while maintaining clear commit-level traceability for faster reviews and rollbacks.
August 2025
3 Commits • 1 Features
Aug 1, 2025Concise monthly summary for 2025-08 focusing on delivering accurate, maintainable simulation capabilities and improving reliability for Mage-related modules and gear interactions in simc. The month was anchored by a targeted set of bug fixes and a module modernization that enhances both correctness and future maintainability.
3 Commits • 1 Features
Aug 1, 2025Concise monthly summary for 2025-08 focusing on delivering accurate, maintainable simulation capabilities and improving reliability for Mage-related modules and gear interactions in simc. The month was anchored by a targeted set of bug fixes and a module modernization that enhances both correctness and future maintainability.
August 2025
July 2025
24 Commits • 13 Features
Jul 1, 2025July 2025 performance summary for simulationcraft/simc focused on Mage tuning, reliability, and maintainability. Delivered comprehensive Mage set bonuses tuning (Sunfury) with 2pc/4pc adjustments, alongside related balance work (e.g., Excess Fire). Implemented structural code changes and expression improvements to standardize calculations, and completed targeted bug fixes that improve correctness and stability of Mage calculations. Enhanced reporting and Gear Score (GS) tooling to support clearer results for users and easier future tuning. Conducted code cleanup and introduced hotfixes to address regressions, enabling faster iteration on future patches.
July 2025
24 Commits • 13 Features
Jul 1, 2025July 2025 performance summary for simulationcraft/simc focused on Mage tuning, reliability, and maintainability. Delivered comprehensive Mage set bonuses tuning (Sunfury) with 2pc/4pc adjustments, alongside related balance work (e.g., Excess Fire). Implemented structural code changes and expression improvements to standardize calculations, and completed targeted bug fixes that improve correctness and stability of Mage calculations. Enhanced reporting and Gear Score (GS) tooling to support clearer results for users and easier future tuning. Conducted code cleanup and introduced hotfixes to address regressions, enabling faster iteration on future patches.
June 2025
12 Commits • 3 Features
Jun 1, 2025June 2025 performance summary for simulationcraft/simc: Delivered significant Mage-related improvements with emphasis on stability, accuracy, and patch readiness for 11.2. Key contributions include a major architectural refactor separating Live and PTR Mage modules, safety enhancements in player creation, and targeted fixes to prevent null dereferences and segfaults. Also completed comprehensive Mage damage and balance tuning for 11.2 (arcane charge multiplier, Meteor mechanics, Arcane Orb travel speed, Hyperthermia buff, Spellfrost teachings integration, and Spellslinger set bonuses). Time Anomaly talent removal was performed to simplify Mage gameplay simulation, reducing complexity and potential edge-case bugs. These changes improved maintainability, reduced risk during patch cycles, and delivered more reliable, patch-aligned simulations for developers and players.
12 Commits • 3 Features
Jun 1, 2025June 2025 performance summary for simulationcraft/simc: Delivered significant Mage-related improvements with emphasis on stability, accuracy, and patch readiness for 11.2. Key contributions include a major architectural refactor separating Live and PTR Mage modules, safety enhancements in player creation, and targeted fixes to prevent null dereferences and segfaults. Also completed comprehensive Mage damage and balance tuning for 11.2 (arcane charge multiplier, Meteor mechanics, Arcane Orb travel speed, Hyperthermia buff, Spellfrost teachings integration, and Spellslinger set bonuses). Time Anomaly talent removal was performed to simplify Mage gameplay simulation, reducing complexity and potential edge-case bugs. These changes improved maintainability, reduced risk during patch cycles, and delivered more reliable, patch-aligned simulations for developers and players.
June 2025
May 2025
4 Commits
May 1, 2025May 2025 monthly summary for repository simulationcraft/simc. Focused on correcting simulation accuracy for mana-related interactions, removing outdated logic, and stabilizing edge-case behavior to ensure reliable performance metrics across dungeon and raid scenarios.
May 2025
4 Commits
May 1, 2025May 2025 monthly summary for repository simulationcraft/simc. Focused on correcting simulation accuracy for mana-related interactions, removing outdated logic, and stabilizing edge-case behavior to ensure reliable performance metrics across dungeon and raid scenarios.
April 2025
4 Commits • 1 Features
Apr 1, 2025April 2025 monthly summary for simulationcraft/simc: Delivered Mage-related updates aligned with Patch 11.1.5, strengthened simulation accuracy and buff handling, and fixed critical trigger logic for Mage Intuition. The work focused on delivering business value through precise damage multipliers, buff integration, and robust bug fixes, enabling more reliable balance decisions and faster iteration.
4 Commits • 1 Features
Apr 1, 2025April 2025 monthly summary for simulationcraft/simc: Delivered Mage-related updates aligned with Patch 11.1.5, strengthened simulation accuracy and buff handling, and fixed critical trigger logic for Mage Intuition. The work focused on delivering business value through precise damage multipliers, buff integration, and robust bug fixes, enabling more reliable balance decisions and faster iteration.
April 2025
February 2025
7 Commits • 1 Features
Feb 1, 2025February 2025: Focused on stabilizing Mage rotation/cooldowns, correcting damage scaling math, and hardening stat initialization to improve DPS accuracy and reliability for users.
February 2025
7 Commits • 1 Features
Feb 1, 2025February 2025: Focused on stabilizing Mage rotation/cooldowns, correcting damage scaling math, and hardening stat initialization to improve DPS accuracy and reliability for users.
January 2025
39 Commits • 21 Features
Jan 1, 2025January 2025: Key features delivered include Frost TWW2 2pc/4pc bonuses and Arcane 4pc bonuses, Arcane Rebound with whitelist, Wintertide balance updates across Mage specs, and related Aether Fragment/Aethervision enhancements. Maintainability improvements include Live/PTR module split and FoF/WC documentation cleanup. RNG and reliability improvements were introduced with rng_t::range for better randomness and Weave Casting expression fixes to support slower spells. Major bugs fixed: Jastor Diamond random target selection, Bypass Excess Frost ICD, crash when 2pc is not equipped, Fire Blast cooldown/CDR backport, and Nether Precision issues with a subsequent revert. These changes improve stability, realism of simulations, and faster iteration cycles. Tech skills demonstrated include refactoring, RNG utilities, debuff whitelisting, and cross-team patch coordination for Live/PTR.
39 Commits • 21 Features
Jan 1, 2025January 2025: Key features delivered include Frost TWW2 2pc/4pc bonuses and Arcane 4pc bonuses, Arcane Rebound with whitelist, Wintertide balance updates across Mage specs, and related Aether Fragment/Aethervision enhancements. Maintainability improvements include Live/PTR module split and FoF/WC documentation cleanup. RNG and reliability improvements were introduced with rng_t::range for better randomness and Weave Casting expression fixes to support slower spells. Major bugs fixed: Jastor Diamond random target selection, Bypass Excess Frost ICD, crash when 2pc is not equipped, Fire Blast cooldown/CDR backport, and Nether Precision issues with a subsequent revert. These changes improve stability, realism of simulations, and faster iteration cycles. Tech skills demonstrated include refactoring, RNG utilities, debuff whitelisting, and cross-team patch coordination for Live/PTR.
January 2025
December 2024
5 Commits • 3 Features
Dec 1, 2024Monthly work summary for 2024-12 focusing on simulations for Mage rotation tuning and general mage improvements within simulationcraft/simc. This month delivered key feature updates, bug fixes, and improvements to debuff handling and talent naming, enabling more accurate testing of rotations and better alignment with patch expectations. The work supports higher-quality build outputs and faster evaluation of rotation strategies for users.
December 2024
5 Commits • 3 Features
Dec 1, 2024Monthly work summary for 2024-12 focusing on simulations for Mage rotation tuning and general mage improvements within simulationcraft/simc. This month delivered key feature updates, bug fixes, and improvements to debuff handling and talent naming, enabling more accurate testing of rotations and better alignment with patch expectations. The work supports higher-quality build outputs and faster evaluation of rotation strategies for users.
November 2024
5 Commits • 3 Features
Nov 1, 2024November 2024: Mage-focused simulation improvements in simulationcraft/simc to enhance rotation fidelity and combat accuracy. Key features and fixes include: Ice Nova now consumes Winter's Chill by default, affecting mage rotation and damage; Mage rotation refinements remove off-GCD triggering for Treacherous Transmitter and reorder the Feel the Burn trigger for more consistent application; Phantasmal Image enhancement conditionally summons an additional image when the relevant flag is set and the talent is available; Frostfire Infusion trigger fix ensures Scorch direct damage triggers FFI as expected. These changes improve DPS estimation accuracy, reduce variability in Mage simulations, and provide more reliable guidance for build optimization. Technologies demonstrated include engine-level event handling, GCD/off-GCD optimization, conditional summons logic, and precise trigger alignment to game mechanics.
5 Commits • 3 Features
Nov 1, 2024November 2024: Mage-focused simulation improvements in simulationcraft/simc to enhance rotation fidelity and combat accuracy. Key features and fixes include: Ice Nova now consumes Winter's Chill by default, affecting mage rotation and damage; Mage rotation refinements remove off-GCD triggering for Treacherous Transmitter and reorder the Feel the Burn trigger for more consistent application; Phantasmal Image enhancement conditionally summons an additional image when the relevant flag is set and the talent is available; Frostfire Infusion trigger fix ensures Scorch direct damage triggers FFI as expected. These changes improve DPS estimation accuracy, reduce variability in Mage simulations, and provide more reliable guidance for build optimization. Technologies demonstrated include engine-level event handling, GCD/off-GCD optimization, conditional summons logic, and precise trigger alignment to game mechanics.
November 2024
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Quality Metrics
Correctness86.4%
Maintainability87.2%
Architecture83.2%
Performance79.8%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++Python
Technical Skills
AI/MLBackend DevelopmentBuff SystemBuff SystemsBuff/Debuff SystemsBug FixingC++C++ DevelopmentCache ManagementClass BalancingClass DesignClass MechanicsClass ModificationClass Module RefactoringClass Modules
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