feat(engine): line-bomb booster clears a row or column

2026-06-18 12:05:14 +09:00
parent bbf8cf3f08
commit e7cd079a5d
2 changed files with 49 additions and 0 deletions
@@ -236,4 +236,18 @@ class GameEngine {
    _checkStuck();
    return true;
  }
+
+  /// Booster: empties one row or one column (exactly one of [row]/[col]).
+  /// No move/score/objective effect. Re-checks stuck.
+  bool useLineBomb({int? row, int? col}) {
+    if (_phase == GamePhase.won || _phase == GamePhase.lost) return false;
+    if ((row == null) == (col == null)) return false; // need exactly one
+    for (var i = 0; i < GridState.size; i++) {
+      final x = col ?? i;
+      final y = row ?? i;
+      _grid = _grid.withCell(x, y, const Cell(CellType.empty));
+    }
+    _checkStuck();
+    return true;
+  }
 }