Open Tin Tower and Whirl Islands: Suicune, Ho-Oh and Lugia (#32)

Tin Tower's floors and roof and the Whirl Islands are open. The Clear Bell
gets the player past the sages to Suicune in Tin Tower; after the League,
the Rainbow Wing leads up to Ho-Oh, and the Silver Wing to Lugia.

New specials: MonCheck and BeastsCheck (CheckOwnMonAnywhere, with its
five-letter OT comparison and no Day-Care search).

The playthrough driver plans ledge jumps for the later stages, waterfall
descents, warp panels and Surf between warps; the run gains two stages,
Routes 45 and 46 back to Ecruteak and Tin Tower's Suicune.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/playthrough.test.ts

@@ -207,6 +207,13 @@ const BASEMENT_KEY = 0x85,
   EVENT_GOT_DRATINI = 0xbd,
   EVENT_ANSWERED_DRAGON_MASTER_QUIZ_WRONG = 0xc1,
   ENGINE_RISINGBADGE = 0x22;
+const ROUTE_46 = "5:9",
+  ROUTE_29_ROUTE_46_GATE = "24:13",
+  TIN_TOWER_ENTRANCE = "4:1",
+  WISE_TRIOS_ROOM = "4:2",
+  TIN_TOWER_1F = "3:4",
+  EVENT_RANG_CLEAR_BELL_2 = 0x767,
+  EVENT_FOUGHT_SUICUNE = 0x335;
 
 /** The acceptance run for PLAN section 2: a new game played from the
  * introduction to the catching tutorial through the world's own inputs,
@@ -1431,5 +1438,53 @@ describe.skipIf(!existsSync(romPath))(
       reload();
       writeTestSave("blackthorn-city");
     }, 240_000);
+    it("takes Routes 45 and 46 down to Route 29 and walks back to Ecruteak", () => {
+      traceFailures();
+      // From here on the driver plans ledge jumps (Route 45, Tin Tower).
+      p.ledges = true;
+      heal(BLACKTHORN_CENTER, BLACKTHORN);
+      cross("down", ROUTE_45);
+      // Route 45's ledges only lead down; Route 46 joins it on the west.
+      cross("left", ROUTE_46);
+      stairs(ROUTE_29_ROUTE_46_GATE);
+      stairs(ROUTE_29);
+      cross("left", CHERRYGROVE);
+      cross("up", ROUTE_30);
+      cross("up", ROUTE_31);
+      stairs(ROUTE_31_GATE);
+      stairs(VIOLET);
+      cross("left", ROUTE_36);
+      cross("up", ROUTE_37);
+      cross("up", ECRUTEAK);
+      reload();
+    }, 240_000);
+
+    it("rings the Clear Bell for the sages and faces Suicune in Tin Tower", () => {
+      traceFailures();
+      heal(ECRUTEAK_CENTER, ECRUTEAK);
+      enter(TIN_TOWER_ENTRANCE, "up");
+      // EcruteakTinTowerEntranceSageBlocks: a sage steps in the way; told
+      // about the Clear Bell, he lets the player through.
+      walk(5, 8);
+      p.world.move("up");
+      play();
+      if (p.world.save().direction !== "up") p.world.move("up");
+      p.world.interact();
+      play();
+      expect(p.log.join(" ")).toContain("The sound of that\nCLEAR BELL!");
+      expect(p.world.state.events.has(EVENT_RANG_CLEAR_BELL_2)).toBe(true);
+      walk(5, 4); // the stairs at (5, 3) lead to the building's far side
+      p.world.move("up");
+      play();
+      stairs(WISE_TRIOS_ROOM);
+      stairs(ECRUTEAK);
+      // TinTower1FSuicuneBattleScript: Raikou and Entei run; Suicune stays.
+      stairs(TIN_TOWER_1F);
+      expect(p.world.state.events.has(EVENT_FOUGHT_SUICUNE)).toBe(true);
+      expect(p.log.join(" ")).toContain("SUICUNE");
+      expect(p.log.join(" ")).toContain("rainbow-");
+      reload();
+      writeTestSave("tin-tower");
+    }, 240_000);
   },
 );