allow overlay screens to accept codes

src/Screen.cpp

@@ -167,12 +167,22 @@ void Screen::Update( float fDeltaTime )
 	}
 }
 
-/* ScreenManager sends input here first. Overlay screens can use it to get a first
- * pass at input. Return true if the input was handled and should not be passed
- * to lower screens, or false if not handled. If true is returned, Input() will
- * not be called, either. Normal screens should not overload this function. */
+/* ScreenManager sends input here if the screen is an overlay. Overlay screens
+ * can use it to get a first pass at input. Returns true if the input was
+ * handled and should not be passed to lower screens, or false if not handled.
+ * If true is returned, neither OverlayInput() nor Input() will not be called
+ * for any screen lower on the stack. Normal screens should not overload this
+ * function. */
 bool Screen::OverlayInput( const InputEventPlus &input )
 {
+	// Allow overlays to respond to codes
+	Message msg("");
+	if( m_Codes.InputMessage(input, msg) )
+	{
+		this->HandleMessage( msg );
+		return true;
+	}
+
 	return false;
 }
 

src/ScreenDebugOverlay.cpp

@@ -498,7 +498,7 @@ bool ScreenDebugOverlay::OverlayInput( const InputEventPlus &input )
 		}
 	}
 
-	return false;
+	return Screen::OverlayInput(input);
 }
 
 

src/ScreenInstallOverlay.cpp

@@ -326,7 +326,7 @@ bool ScreenInstallOverlay::OverlayInput( const InputEventPlus &input )
 	}
 	*/
 
-	return false;
+	return Screen::OverlayInput(input);
 }
 
 void ScreenInstallOverlay::Update( float fDeltaTime )

src/ScreenSyncOverlay.cpp

@@ -155,10 +155,10 @@ static LocalizedString SYNC_CHANGES_REVERTED		("ScreenSyncOverlay","Sync changes
 bool ScreenSyncOverlay::OverlayInput( const InputEventPlus &input )
 {
 	if( !IsGameplay() )
-		return false;
+		return Screen::OverlayInput(input);
 
 	if( input.DeviceI.device != DEVICE_KEYBOARD )
-		return false;
+		return Screen::OverlayInput(input);
 
 	enum Action
 	{
@@ -186,7 +186,7 @@ bool ScreenSyncOverlay::OverlayInput( const InputEventPlus &input )
 		break;
 
 	default:
-		return false;
+		return Screen::OverlayInput(input);
 	}
 
 	if( GAMESTATE->IsCourseMode() && a != ChangeGlobalOffset )
@@ -198,11 +198,8 @@ bool ScreenSyncOverlay::OverlayInput( const InputEventPlus &input )
 	switch( a )
 	{
 	case RevertSyncChanges:
-		switch( input.type )
-		{
-		case IET_FIRST_PRESS:	break;
-		default:	return false;
-		}
+		if( input.type != IET_FIRST_PRESS )
+			return false;
 		SCREENMAN->SystemMessage( SYNC_CHANGES_REVERTED );
 		AdjustSync::RevertSyncChanges();
 		break;