fix say textbox going outside the screen

fancy_demo/fancy.asc

@@ -43,10 +43,21 @@ int _get_character_height(Character* c)
   return ((Game.SpriteHeight[vf.Graphic] + c.z) * c.Scaling)/100;
 }
 
-int _adjust_speech_y(int y)
+int _adjust_speech_y(int y) // meant to avoid occluding player head if possible
 {
-  int y_limit = _clamp_i(_say_char_head_y-_sayspr.Height, Screen.Height, _sayspr.Height + 5);
-  return _clamp_i(y, y_limit, 0);
+  return _clamp_i(y, _clamp_i(_say_char_head_y-_sayspr.Height, Screen.Height, _sayspr.Height + 5), 0);
+}
+
+int _adjust_speech_x(int x, int width) // avoids text going outside screen
+{
+  return _clamp_i(_clamp_i(x + width, Screen.Width-5, 5) - width, Screen.Width-5, 5);
+}
+
+void _fancy_say_set_overlay(Overlay* curSpeech)
+{
+  curSpeech.Graphic = _sayspr.Graphic;
+  curSpeech.Y = _adjust_speech_y(curSpeech.Y);
+  curSpeech.X = _adjust_speech_x(curSpeech.X, curSpeech.Width);
 }
 
 int _get_character_top_head_y(Character* c)
@@ -1169,17 +1180,15 @@ void _fancy_say_update()
     if(!_sayft._is_typed_text)
     {
       _sayspr = _sayft.CreateTextBoxSprite();
-      curSpeech.Y = _adjust_speech_y(curSpeech.Y);
-      curSpeech.Graphic = _sayspr.Graphic;
+      _fancy_say_set_overlay(curSpeech);
     }
   }
 
   if(_say_started && _sayft._is_typed_text)
   {
     _sayft.Tick();
     _sayspr = _sayft.CreateTypedSprite();
-    curSpeech.Graphic = _sayspr.Graphic;
-    curSpeech.Y = _adjust_speech_y(curSpeech.Y);
+    _fancy_say_set_overlay(curSpeech);
     _say_ovr_tmp = Overlay.CreateGraphical(curSpeech.X, curSpeech.Y, _sayspr.Graphic, true, true);
     _say_ovr_tmp.Transparency = 100;
   }