(svn r22073) -Fix: immediately update the train weight when you change the multiplier for train cargo weight

src/settings.cpp

@@ -1146,6 +1146,17 @@ static bool StationCatchmentChanged(int32 p1)
 	return true;
 }
 
+
+static bool MarkAllTrainsDirty(int32 p1)
+{
+	Train *t;
+	FOR_ALL_TRAINS(t) {
+		if (t->IsPrimaryVehicle()) t->MarkDirty();
+	}
+	SetWindowClassesDirty(WC_VEHICLE_DETAILS);
+	return true;
+}
+
 #ifdef ENABLE_NETWORK
 
 static bool UpdateClientName(int32 p1)

src/table/settings.h

@@ -43,6 +43,7 @@ static bool InvalidateCompanyLiveryWindow(int32 p1);
 static bool InvalidateNewGRFChangeWindows(int32 p1);
 static bool InvalidateIndustryViewWindow(int32 p1);
 static bool RedrawTownAuthority(int32 p1);
+static bool MarkAllTrainsDirty(int32 p1);
 
 #ifdef ENABLE_NETWORK
 static bool UpdateClientName(int32 p1);
@@ -422,7 +423,7 @@ const SettingDesc _settings[] = {
 	    SDT_BOOL(GameSettings, order.no_servicing_if_no_breakdowns,                                 0, 0,  true,                    STR_CONFIG_SETTING_NOSERVICE,              NULL),
 	    SDT_BOOL(GameSettings, vehicle.wagon_speed_limits,                                          0,NN,  true,                    STR_CONFIG_SETTING_WAGONSPEEDLIMITS,       UpdateConsists),
 	SDT_CONDBOOL(GameSettings, vehicle.disable_elrails,                         38, SL_MAX_VERSION, 0,NN, false,                    STR_CONFIG_SETTING_DISABLE_ELRAILS,        SettingsDisableElrail),
-	 SDT_CONDVAR(GameSettings, vehicle.freight_trains,               SLE_UINT8, 39, SL_MAX_VERSION, 0,NN,     1,     1,     255, 1, STR_CONFIG_SETTING_FREIGHT_TRAINS,         NULL),
+	 SDT_CONDVAR(GameSettings, vehicle.freight_trains,               SLE_UINT8, 39, SL_MAX_VERSION, 0,NN,     1,     1,     255, 1, STR_CONFIG_SETTING_FREIGHT_TRAINS,         MarkAllTrainsDirty),
 	SDT_CONDNULL(                                                            1, 67, 158), // order.timetabling
 	 SDT_CONDVAR(GameSettings, vehicle.plane_speed,                  SLE_UINT8, 90, SL_MAX_VERSION, 0,NN,     4,     1,       4, 0, STR_CONFIG_SETTING_PLANE_SPEED,            NULL),
 	SDT_CONDBOOL(GameSettings, vehicle.dynamic_engines,                         95, SL_MAX_VERSION, 0,NN,  true,                    STR_CONFIG_SETTING_DYNAMIC_ENGINES,        ChangeDynamicEngines),