Bug fixes and improvements

* Fixed renpy.input not working with Chinese translation
* Improved language handling for preferences

game/scripts/constants.rpy

@@ -2,3 +2,7 @@
 define CHARACTERS = {"hermione", "tonks", "astoria", "cho", "luna", "susan", "hooch"}
 define SAYERS = {i[:3]:i for i in CHARACTERS}
 define ALLOWED_CHARACTERS = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz "
+define LANGUAGE_TRANSCRIPTS = {
+    "english": "{font=gui/CreativeBlockRegular.ttf}English{/font}",
+    "chinese": "{font=tl/chinese/NotoSansSC-Bold.otf}汉语{/font}",
+}

game/scripts/gui/preferences.rpy

@@ -120,9 +120,13 @@ screen preferences_general():
         hbox:
             spacing 2
 
-            textbutton "English" action Language(None)
-            for i in languages:
-                textbutton i.capitalize() action Language(i)
+            textbutton LANGUAGE_TRANSCRIPTS.get("english") action Language(None)
+
+            # Each language should be displayed in its native tongue.
+            # Please do not translate other language names.
+            for lang in languages:
+                $ transcript = LANGUAGE_TRANSCRIPTS.get(lang, lang)
+                textbutton transcript action Language(lang)
 
 screen preferences_visuals():
     hbox:

game/tl/chinese/init.rpy

@@ -4,3 +4,5 @@ translate chinese style default:
 translate chinese python:
     gui.text_font = "tl/chinese/NotoSansSC-Bold.otf"
     gui.bold_font = "tl/chinese/NotoSansSC-Black.otf"
+    # Note: This is required for non-alphabetic scripts to support inputs.
+    ALLOWED_CHARACTERS = None