feat: improve RenPy conversion and support MIST runtime

frontend/tests/screens.test.mjs

@@ -69,6 +69,52 @@ test("a screen renders its widgets, conditions, loops and interpolated text", ()
   assert.equal(root.querySelector(".pg-sbtn").style.background, "#123", "style hud_button applies");
 });
 
+test("ui.interact receives repeated Returns without hiding an existing screen", () => {
+  const { manager, py } = setup();
+  manager.show("hud");
+  const before = manager.snapshot();
+  const values = [];
+  const builtins = manager.builtins();
+  const cancel = manager.interact((value) => values.push(value));
+  manager.run(builtins.Return("tick"), null);
+  cancel();
+  assert.deepEqual(values, ["tick"]);
+  assert.deepEqual(manager.snapshot(), before);
+  manager.interact((value) => values.push(value));
+  manager.run(builtins.Return(0), null);
+  assert.deepEqual(values, ["tick", 0]);
+  const cancelled = manager.interact((value) => values.push(value));
+  cancelled();
+  manager.run(builtins.Return("stale"), null);
+  assert.deepEqual(values, ["tick", 0]);
+  manager.destroy();
+});
+
+test("gallery buttons honor unlock conditions and close back to the same screen", () => {
+  const { manager, py } = setup();
+  const builtins = manager.builtins();
+  const gallery = py.instantiate(builtins.Gallery, []);
+  const invoke = (name, ...args) => builtins.Gallery.find(name).value(gallery, ...args);
+  invoke("button", "art");
+  invoke("image", "art.png");
+  invoke("condition", "money > 10");
+  const value = invoke("make_button", "art", "thumb.png", "locked.png");
+  assert.equal(value.kw.sensitive, true);
+  manager.show("hud");
+  manager.run(value.kw.action, null);
+  assert.ok(manager.layer.querySelector(".pg-gallery img[src='/f/art.png']"));
+  const close = [...manager.layer.querySelectorAll(".pg-gallery button")].find((b) => b.textContent === "Закрыть");
+  click(close);
+  assert.equal(manager.layer.querySelector(".pg-gallery"), null);
+  assert.equal(manager.snapshot()[0].name, "hud");
+  py.scope.set("money", 0);
+  assert.equal(invoke("Action", "art"), null);
+  const locked = invoke("make_button", "art", "thumb.png", "locked.png");
+  assert.equal(locked.kw.sensitive, false);
+  assert.equal(locked.kw.idle, "locked.png");
+  manager.destroy();
+});
+
 test("conditions follow the game state when the screen refreshes", async () => {
   const { manager, store } = setup();
   manager.show("hud");