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mtg-online-drafter/docs/development/devlog/2024-12-18-173500_strict_rules_engine.md

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2024-12-18 17:35:00 - Strict Rules Engine Implementation

Description

Implemented a comprehensive Magic: The Gathering rules engine (Core Logic) to replace the sandbox mode with strict rules enforcement. This includes a State Machine for Turn Structure, Priority System, Stack, and State-Based Actions.

Key Changes

  1. Core Types: Created src/server/game/types.ts defining Phase, Step, StrictGameState, StackObject, etc.
  2. Rules Engine: Created src/server/game/RulesEngine.ts implementing:
    • Turn Structure: Untap, Upkeep, Draw, Main, Combat (Steps), End.
    • Priority System: Passing priority, stack resolution, phase transition.
    • Actions: playLand, castSpell with validation.
    • State-Based Actions: Lethal damage, Zero toughness, Player loss checks.
  3. Game Manager Refactor:
    • Updated GameManager.ts to use StrictGameState.
    • Implemented handleStrictAction to delegate to RulesEngine.
    • Retained handleAction for legacy/sandbox/admin support.
  4. Socket Handling:
    • Added game_strict_action event listener in server/index.ts.

Next Steps

  • Client-side integration: The frontend needs to be updated to visualize the Phases, Stack, and Priority (Pass Button).
  • Move from "Sandbox" UI to "Rules Enforcement" UI.