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Hans Mackowiak

PROFILE

Hans Mackowiak

Over 17 months, this developer advanced the Card-Forge/forge project by delivering 158 features and resolving 61 bugs, focusing on gameplay mechanics, AI, and data integrity. They engineered new card keywords, overhauled token and card type systems, and enhanced AI logic for more strategic play. Their technical approach emphasized maintainable Java code, leveraging object-oriented design, stream APIs, and robust configuration management. They refactored core systems for performance, improved localization and UI reliability, and modernized build pipelines. Through targeted bug fixes and scalable architecture, they strengthened code quality and enabled faster iteration, supporting both player experience and future contributor onboarding.

Overall Statistics

Feature vs Bugs

72%Features

Repository Contributions

393Total
Bugs
61
Commits
393
Features
158
Lines of code
43,320
Activity Months17

Work History

March 2026

16 Commits • 6 Features

Mar 1, 2026

Monthly Summary — March 2026 (Card-Forge/forge) Key features delivered - Affinity keyword framework and enhanced card interactions: Introduced an Affinity framework and updated CardFactoryUtil to properly handle Affinity-related abilities, enabling richer card synergy and future keyword extension. Key commits include 1bb1a3d3ea45fe629c9ee23d400af264d983c0e0 (Affinity: extra class for the special cases) and 89a4e4b3f78d82a676f92d271e82c6ab36757075 (Update CardFactoryUtil.java). - Adventure image feature for cards: Added support for unique adventure-themed visuals and effects on cards using CardFactoryUtil; commit 5ef6231da36fdbee05981fd3d8a6bf6d741a0af7 (CardFactoryUtil: use Adventure Image). - Craft keyword enhancements: Refined Craft keyword implementation to improve title/reminder text and introduced new transformation/cost logic; commit bea03f5c74173f7141b21c3a37318f269c75bc90 (Craft: rework Title and reminder (#10029)). - Landwalk keyword dynamic titles: Added dynamic title generation for Landwalk keyword based on land type and reorganized code accordingly; commit 26110d2c6775f300edb93ea2cf660da50b5271f3 (Landwalk: extra class for Title (#10030)). - Counter management and ManaAi improvements: Improved counter removal logic and ManaAi handling, including safer access to counters and removing fallbacks; commits include 921b350afb90380d0b24078e59da0e0785fce165 (CostRemoveAnyCounter: cleanup description (#9997)), 8b82fcac1872971572a076a05a5620f8f4103f87 (Update ManaAi.java), a585adddbebd5aad99bd346fe3e96307261a80a8 (Update ManaAi.java; Remove CounterEnumType.KI fallback), and 31eae86690d628a9ac98760936d536429d20f5f7 (CountersPutAi: fix AI because Choices are before Target (#10040)). Major bugs fixed - Deck building robustness: Fixed potential CMC calculation issues to ensure correct creature counts and to prevent null issues in the deck builder when facing problematic cmc combinations; commit dd8803bd74ab79a48f65f03140bcd302e22b2f02 (DeckBuilder: fix possible CMC on bad cmc combination (#10015)). - Minor fixes and refactors: Addressed robustness with NPE handling, UI/title consistency, parsing improvements, and general refactoring across components; representative commits include 56d217a51e305e119892d065c5847b5fac1e90c2, 5e76196f77a8fcfab5c54ebfa320dbb2bdde0d05, 06b5595b5f84d0c8f482a4de598a980f330510b3, 39eb1efc91fc22e4922da27d0c2689eff2c1559b, 94e45403a82d673e3533f0cb0f7843d0f2efd468, 4283af627c04c321c4b7b0b12147a1f0a7d9cc10). Overall impact and accomplishments - Elevates gameplay depth and user experience with richer keyword dynamics and new visuals. - Improves engine reliability by targeting core fragility areas (NPEs, edge-case deck-building scenarios, AI stability). - Enhances maintainability and extensibility for future keywords, dynamic content, and visual assets, with clearer commit trails and safer code patterns. - Positions the project for rapid iteration on new keywords, visuals, and AI behaviors. Technologies/skills demonstrated - Java codebase mastery: keyword framework integration, CardFactoryUtil enhancements, and robust refactoring. - AI and game mechanic engineering: ManaAi improvements and counter management logic. - Dynamic content and UI: dynamic title generation, adventure imagery, and textual refinements. - Robustness engineering: NPE handling, parsing improvements, and counting/grouping cleanup.

February 2026

6 Commits • 3 Features

Feb 1, 2026

Month: 2026-02 | Repository: Card-Forge/forge Key features delivered and major fixes: - Fixed Deathtouch trigger for multi-block scenarios to ensure correct combat outcomes when a creature is blocked by multiple attackers. (Commit: b6e884daad539bd387e1371fad755feb12ecf94e) - Merfolk Conjuration Trigger Enhancements: refined conjuration logic for Merfolk, including combat damage handling and general conjuration behavior for more reliable results. (Commits: 40f452cf61a3c2948c4a01751f4112e85c12bdaa; 642740db2dc2a6667b8e0c3a1329d17e8729af69) - KeywordWithType: getTitle added to keyword representation to provide descriptive outputs (e.g., Hexproof), improving clarity and usability. (Commit: aa87a1e8dd4932b5d3378463a5ae4eab83809d0a) - Code quality/API improvements: introduced a String-based ManaCost constructor for easier object creation and refactored CardType to use a Set for basic land types, enhancing safety and performance. (Commits: 78777602e72dd87464febc6b0776eaf47325659f; 1d659a38608a28c715875225aa25eaf50fa40afd) Overall impact and accomplishments: - Improved combat correctness and player-facing clarity, reducing edge-case bugs and improving the reliability of mana/keyword handling. - Strengthened code safety, performance, and maintainability through API improvements and data-structure changes. - Provides a stronger foundation for future features and easier onboarding for new contributors through clearer abstractions and naming. Technologies/skills demonstrated: - Java/OOP design and refactoring (CardType, ManaCost) - Game engine mechanics: Deathtouch, combat damage, conjuration triggers - Code quality practices: API stability, type safety, and performance considerations - Commit hygiene and traceability with descriptive messages and hashes

January 2026

33 Commits • 14 Features

Jan 1, 2026

January 2026 highlights: Delivered a major engine and gameplay modernization across Card-Forge, including a token system overhaul to move Dungeon tokens into Tokens as part of VentureEffect; improved serialization and UI naming for CardFaceView; performance improvements via GameAction API updates with reduced View Updates per Layer; progressed extensive keyword and cost system refactors with ICardTraitChanges integration, enabling more flexible and scalable card interactions; fixed critical bugs to improve gameplay correctness and UX (Hexproof from chosenColor, Vanishing without amount, and life gain guard). These changes reduce runtime overhead, improve correctness, and lay groundwork for future feature work, delivering business value through more reliable gameplay, faster rendering, and scalable card interactions.

December 2025

18 Commits • 6 Features

Dec 1, 2025

2025-12 monthly summary for Card-Forge/forge focused on delivering high-impact gameplay improvements, improved localization and UI reliability, and maintainability enhancements. Key features span card type system and localization enhancements, ability text clarifications, new Power-Up cost-reduction mechanics for noncreature spells, a Blight mechanic with AI support, and targeted balance and refactors that improve GUI serialization and data modeling. These efforts collectively enhance player experience, reduce ambiguity in card interactions, and strengthen engineering health for future iterations. Highlights include: a comprehensive Card type system overhaul with icons, translation-ready type cache, and changes tracked in CardType/CardState/TextChangedType and related commits; clarified card abilities and delayed triggers to improve in-game interactions; introduced Power-Up with associated cost-reduction mechanics affecting noncreature spells; added Blight effect with AI support for gameplay integration; tuned Trained Arynx ability to grant first strike when saddled; and internal code refactors and serialization improvements (Mana as a record; GUI serialization fixes) to boost maintainability and GUI reliability.

November 2025

16 Commits • 7 Features

Nov 1, 2025

November 2025 (Card-Forge/forge) delivered a set of scalable features, localization improvements, and architectural refinements that drive business value and developer velocity. Key features and UX enhancements were paired with targeted code-quality improvements to reduce future effort and enable faster feature delivery.

October 2025

24 Commits • 7 Features

Oct 1, 2025

Monthly work summary for 2025-10 (Card-Forge/forge). The month focused on delivering a robust foundation, expanding gameplay capabilities, and improving reliability to accelerate future velocity and business value. The work balances architectural modernization with feature delivery and quality improvements across core engine, deck parsing, utilities, and documentation.

September 2025

25 Commits • 13 Features

Sep 1, 2025

Month: 2025-09 — Delivered targeted gameplay stability, data accuracy, and maintainability improvements with measurable business value. Key features and data updates were shipped on schedule, critical bugs were resolved to stabilize core mechanics, and refactors improved localization, performance, and future scalability. The work emphasizes robust targeting, data-driven content updates, and code hygiene to support upcoming releases and a better player experience.

August 2025

51 Commits • 30 Features

Aug 1, 2025

For August 2025, Card-Forge/forge delivered major AI, data, and gameplay upgrades that enhanced AI decision quality, data accuracy, and stability, enabling richer play experiences across the card game engine. Notable efforts spanned AI/utilities, card state handling, and targeted refactors to improve performance and maintainability.

July 2025

18 Commits • 2 Features

Jul 1, 2025

July 2025 (Card-Forge/forge): Delivered core gameplay and data quality improvements that enhance strategic depth and maintainability. Key features shipped include Warp keyword with graveyard/hand casting and Void mechanic integration, enabling new interaction patterns and alternate costs; a refactor of the Devour keyword with flexible parsing and per-permanent sacrifice types, plus a new Devour class extending KeywordWithAmountAndType; and comprehensive card data and asset updates across the project to improve clarity, consistency, and QA readiness (SusurDraw, emblems, token data, and spell descriptions). These changes collectively enable richer gameplay, reduce future maintenance costs, and strengthen the data pipeline.

June 2025

13 Commits • 3 Features

Jun 1, 2025

June 2025 monthly summary for Card-Forge/forge focusing on delivering features, fixing bugs, and improving data quality. Highlights include Spacecraft type addition, improved CardState ability processing, Leviathan behavior corrections, Android compatibility fixes, and extensive data/content updates (MH3 additions, Shambling Cieth balance, and general edits). This work delivered stronger gameplay fidelity, stability, and scalable data for future features, enabling better business value and smoother player experiences.

May 2025

38 Commits • 11 Features

May 1, 2025

May 2025 monthly summary for Card-Forge/forge: Focused on delivering richer token data, robust edition lookups, and improved rendering while stabilizing image handling and data updates. Key features included PaperToken/token management enhancements with CollectorNumber, CantBlock and StaticAbilityMode expansions, and CardEdition retrieval bug fix for Unknown Set; token image rendering improvements and HiddenCard download support; tiered functionality addition; extensive card data and documentation updates; and ongoing stability fixes that reduce known issues and improve developer experience. This work delivered measurable business value by improving data accuracy, user-facing rendering quality, and gameplay fidelity.

April 2025

42 Commits • 21 Features

Apr 1, 2025

April 2025 — Card-Forge/forge: Delivered substantial feature work, extensive data updates, and reliability fixes that improve gameplay interactions, data correctness, and maintainability. Highlights include: AttachAI cleanup with generic KeepTapped and TokenAi updates; card state/spell interaction enhancements such as Harmonize first try, ForColor handling for Spirit Dragons, ReplacementEffect in CardState, and Layer support for Unearth (Gain Haste); Aura Spells and Keyword static improvements with internal Attach Spell support for multiple Enchant Keywords and CounterKeywordStatic; broad card data and content updates across numerous files (champion_of_dusan.txt, dance_of_the_dead.txt, aligned_heart.txt) plus extensive data updates for Duskmourn House of Horror, FacedownImageKey, and major sets (Modern Horizons 2, Tarkir Dragonstorm Commander, Commander Legends and related sets). Additional work included CardEdition: add TokenInSet, IPref implementation fix, SVars cleanup, removal of getDirectSVars, and miscellaneous data/text refinements across many cards; LF fixes as needed. Overall, these changes enhance gameplay fidelity, data reliability, and developer velocity for future feature work.

March 2025

19 Commits • 7 Features

Mar 1, 2025

March 2025 — Card-Forge/forge monthly summary focused on rule fidelity, stability, and expanded card interactions. Key features delivered include InfectDamage static ability for Phyrexian Unlife (ensuring infect damage is applied when life total is zero or less), Endure mechanic introduction with new classes, AI, API updates and sample cards, and a Dream counter limit overhaul introducing getCounterMax and StaticAbilityMaxCounter with Rasputin Dreamweaver dream counter enforcement. Additional notable work includes Omen card type support and an Adventure refactor to a general 'Secondary' state for rendering/abilities, and Mobilize X keyword enhancement that passes SVars to static abilities with an Infantry Shield demonstration. Major bugs fixed include extensive card data corrections across multiple files to fix targeting, triggers, and formatting, along with untap logic refinements to respect CantHappen and related restrictions. Core engine improvements covered cost parsing, deck viewer data structure, and build/config maintenance. Overall impact: stronger game-rule fidelity, improved engine stability, and greater extensibility for future features, enabling more reliable card interactions and faster contributor onboarding. Technologies demonstrated: static abilities framework, new counter management, cost parsing and deck viewer optimizations, data-driven card text corrections, AI/API integration for Endure, and ongoing build/config hygiene.

February 2025

22 Commits • 6 Features

Feb 1, 2025

February 2025 monthly summary focusing on delivering balance/content updates, framework refinements, bug fixes, observability improvements, and repo hygiene to enhance product quality and business value.

January 2025

32 Commits • 17 Features

Jan 1, 2025

January 2025 (2025-01) — Card-Forge/forge delivered a focused set of build hygiene, data updates, and gameplay/UI refinements that reduce release risk, improve data integrity, and accelerate future iteration cycles. The work spanned repository upkeep, data asset corrections, and core/gameplay improvements, all aligned with business value of faster delivery and a stronger, more maintainable codebase.

December 2024

6 Commits • 2 Features

Dec 1, 2024

The December 2024 period delivered two major feature workstreams in Card-Forge/forge with strong safety, maintainability, and balance improvements. Stale-branch cleanup workflow enhancements improved automation safety by ignoring active PRs and aligning tooling with repository metadata, reducing accidental deletions and drift. Gameplay AI tuning refined decision-making and refactored cost logic to improve in-game balance and reliability. The changes were implemented with a combination of YAML workflow updates, Maven pom.xml adjustments, and targeted code refactors, demonstrating strong CI/CD discipline and cross-team collaboration.

November 2024

14 Commits • 3 Features

Nov 1, 2024

For 2024-11, Card-Forge/forge delivered targeted gameplay balance changes, expanded AI-driven class level-ups, and substantial internal code quality improvements that boosted robustness, maintainability, and developer velocity. Key outcomes include: - Key features delivered: - Card balance adjustments: Rebalanced Lunar Insight, Nazar, and Tyvar's PumpAll to recalibrate power dynamics in gameplay. Changes implemented via updates to lunar_insight.txt, nazar_the_velvet_fang.txt, and tyvar_the_pummeler.txt. Commits: ea3806d7b6d577a1147d803a7c0bf77e3c50ee21; af545d69da69a3e5a1bcde268a511c6bedd81d1b; d165aba6240c33445ca0ccbbc63cde1593757b35. - Class level-up AI integration: Introduced ClassLevelUpAi to handle class level-up triggers and integrated new AI behavior into game mechanics. Commit: ad3044133cff4f47038346f81cacce7b7b04452f. - Internal code quality improvements: Refactors and bug fixes across logging, card typing, mana symbol mapping, copying, Miracle/Madness cost handling, formatting, CardFactoryUtil, and SeekEffect to improve robustness and maintainability. Commits include: moved GameEventCardForetold and GameEventCardPlotted to GameLogFormatter; Card: copy getChangedCardTypes; use CardState.getTypeWithChanges directly; ColorSet: use Stream to map ManaSymbol; Card: moved some getter/setter into a copyFrom; Miracle&Madness: use ManaCost instead of CardManaCost; ~fix line style in cardsfolder; Miracle: fix index; Update SeekEffect.java (multiple commits); Update SeekEffect.java. Commits: 80215206922366225402307ae0be4fd515d438d6; 87a16ea58ca2fe5eff9e63cb9ca9b00c5531fb88; 9170c64847bd12c66cf89990d4b7b8e3b5823eb1; 73940c584e9dfc486c04fd026daf9e8dafff1270; 3c21054f8e92033cebb545317155b289ba32c8ca; 212f14063e0f93e386bbec5d09eb145e72ca8c74; 870add0da414ebe6e76033f6110712a8d0115ef5; 3e5a728646b7bd55aa7c37e12fc8ebdd2423d97b; 4b63fd8dc1545fd030f8c342e39268b3e05f9854; 451f12826f21e76dc9757b1b9ba35daa47cdf3f8.

Activity

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Quality Metrics

Correctness92.2%
Maintainability91.4%
Architecture89.6%
Performance88.0%
AI Usage22.2%

Skills & Technologies

Programming Languages

Git AttributesGradleJavaPropertiesShellTXTTextXMLYAMLplaintext

Technical Skills

AIAI DevelopmentAI ImplementationAI IntegrationAI LogicAI ProgrammingAI programmingAPI DesignAPI DevelopmentAPI IntegrationAPI RefactoringAndroid DevelopmentAsset ManagementBackend DevelopmentBug Fixing

Repositories Contributed To

1 repo

Overview of all repositories you've contributed to across your timeline

Card-Forge/forge

Nov 2024 Mar 2026
17 Months active

Languages Used

JavaTXTTexttxtXMLYAMLGit AttributesGradle

Technical Skills

AI ImplementationBackend DevelopmentCard Game BalancingCard Game DevelopmentCard Game LogicCard Game Mechanics