feat: translate flight tutorial for next in-game trial

tools/test_tutorial_flight.py

@@ -0,0 +1,26 @@
+"""Flight tutorial text fits the existing dialog using actual engine layout."""
+import json
+from pathlib import Path
+import unittest
+from test_cjk_layout import layout
+
+
+class FlightTests(unittest.TestCase):
+    def test_flight_instructions_fit_and_share_dialog_center(self):
+        mapping = json.loads(Path(__file__).with_name('tutorial_cn.json').read_text(encoding='utf-8'))
+        bodies = [v for k, v in mapping.items() if k.startswith('\fYou can fly')]
+        self.assertEqual(len(bodies), 2)
+        self.assertEqual(bodies[0], bodies[1])
+        for body in bodies:
+            for width in (360, 400, 480):
+                lines, _ = layout(body, width=width, alignment=0)
+                self.assertEqual(len(lines), 2)
+                for raw, x, y in lines:
+                    text = raw.decode('gb2312')
+                    self.assertEqual(x, (width - len(text) * 12) // 2)
+                    self.assertNotIn(text[0], '，。；：、')
+                self.assertEqual(lines[1][2] - lines[0][2], 17)
+
+
+if __name__ == '__main__':
+    unittest.main()