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systemic-game-design-course/course/10-spellgrid/expansion/README.md
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Lucas WintherandClaude Opus 5.5 6f576940b7 fix: module 10 review round 1 (module-local SpellGrid cards, cast target check, CLI without panic hook)
- SpellGrid cards move to course/10-spellgrid/cards; start-module and
  verify-references stage course/cards plus module-local cards up to the module,
  so M5-M9 workspaces get exactly the pre-M10 card set.
- cast() rejects a chosen-target spell without a target (checkCast/checkPlay);
  new test_10_targeted_spell_needs_target.
- Rust CLI pre-validates instead of swapping the global panic hook.
- Catalog: CRIER noun; DEATHRATTLE/BATTLECRY note on lexicon vs catalog role.
- Lesson: design note on mid-movement reparse.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
2026-10-29 05:11:09 +01:00

2.3 KiB

Module 10 Expansion Drop: BATTLECRY IS DOUBLE

The lesson's Expansion Drop beat explains the task. This file holds the scenario, the test locations and the check.

  • Word: BATTLECRY, a noun that names a trigger, as DEATHRATTLE does. With it, BATTLECRY IS DOUBLE written on the grid makes every Battlecry trigger twice, like Brann Bronzebeard ("Your Battlecries trigger twice.", Module 4).
  • Card: Town Crier, a SpellGrid card that is already in course/10-spellgrid/cards/, the module's own cards ("game": "spellgrid"): a 1-cost 1/1 minion, noun CRIER, "Battlecry: Deal 1 damage to the enemy hero."
  • Tests: tests/rust/test_10x.rs and tests/ts/test_10x.test.ts. Copy the one for your track into your workspace's tests/.
  • Reference answer, two data files and no code:
    • solution/words.json: the Module 10 reference's src/content/words.json with one entry added, { "name": "BATTLECRY", "role": "noun" }.
    • solution/seams.json: the Module 10 reference's src/content/seams.json with one entry added to triggerWords, "BATTLECRY": "battlecry".
    • Nothing under src/engine/ changes, and neither does the harness. The seam compiles any trigger word joined to any multiplier word; Module 4's one activations routine already multiplies Battlecries.
  • Check: commit your workspace before you start, then run node tools/expansion-check.mjs <your-workspace> <that-commit> from the course repository. It fails if any file under src/engine/ changed.

Scenario

test_10x_battlecry_is_double

  • Setup: newSpellGrid with a level 5 wide and 3 high holding BATTLECRY (0,0) IS (1,0) DOUBLE (2,0), no cards on the grid, and hand ["Town Crier"].
  • Assertions 1: activeRules() contains "BATTLECRY IS DOUBLE".
  • Action: clearLog(), then play("Town Crier", 0, 2), returning crier.
  • Assertions 2:
    • The log holds exactly two Triggered { source: crier, trigger: "battlecry" }.
    • health(hero(1)) is 28: two Battlecries of 1 damage each.
    • kindsAt(0,2) is ["crier"]: the minion entered the grid as its card's noun.

Before the drop the lexicon doesn't know BATTLECRY, so the text spells no rule, and the first assertion fails. (Without that assertion the Battlecry would trigger once and the hero would have 29 Health.)