diff --git a/src/openrct2-ui/interface/ViewportInteraction.cpp b/src/openrct2-ui/interface/ViewportInteraction.cpp
index 24f5914c2e..9b77d36303 100644
--- a/src/openrct2-ui/interface/ViewportInteraction.cpp
+++ b/src/openrct2-ui/interface/ViewportInteraction.cpp
@@ -375,7 +375,7 @@ InteractionInfo ViewportInteractionGetItemRight(const ScreenCoordsXY& screenCoor
                 stationIndex = tileElement->AsTrack()->GetStationIndex();
 
             for (i = stationIndex; i >= 0; i--)
-                if (ride->stations[i].Start.isNull())
+                if (ride->stations[i].Start.IsNull())
                     stationIndex--;
             stationIndex++;
             ft.Add<uint16_t>(stationIndex);
@@ -761,7 +761,7 @@ CoordsXY ViewportInteractionGetTileStartAtCursor(const ScreenCoordsXY& screenCoo
     if (window == nullptr || window->viewport == nullptr)
     {
         CoordsXY ret{};
-        ret.setNull();
+        ret.SetNull();
         return ret;
     }
     auto viewport = window->viewport;
@@ -771,7 +771,7 @@ CoordsXY ViewportInteractionGetTileStartAtCursor(const ScreenCoordsXY& screenCoo
 
     if (info.SpriteType == ViewportInteractionItem::None)
     {
-        initialPos.setNull();
+        initialPos.SetNull();
         return initialPos;
     }
 
diff --git a/src/openrct2-ui/windows/Footpath.cpp b/src/openrct2-ui/windows/Footpath.cpp
index 1cdd7ba637..ed4915bccc 100644
--- a/src/openrct2-ui/windows/Footpath.cpp
+++ b/src/openrct2-ui/windows/Footpath.cpp
@@ -798,7 +798,7 @@ static void window_footpath_set_selection_start_bridge_at_point(const ScreenCoor
     gMapSelectFlags &= ~MAP_SELECT_FLAG_ENABLE_ARROW;
 
     auto mapCoords = footpath_bridge_get_info_from_pos(screenCoords, &direction, &tileElement);
-    if (mapCoords.isNull())
+    if (mapCoords.IsNull())
     {
         return;
     }
@@ -904,7 +904,7 @@ static void window_footpath_start_bridge_at_point(const ScreenCoordsXY& screenCo
     TileElement* tileElement;
 
     auto mapCoords = footpath_bridge_get_info_from_pos(screenCoords, &direction, &tileElement);
-    if (mapCoords.isNull())
+    if (mapCoords.IsNull())
     {
         return;
     }
diff --git a/src/openrct2-ui/windows/Guest.cpp b/src/openrct2-ui/windows/Guest.cpp
index a52a0ee43c..4e62cf9142 100644
--- a/src/openrct2-ui/windows/Guest.cpp
+++ b/src/openrct2-ui/windows/Guest.cpp
@@ -585,7 +585,7 @@ void window_guest_overview_mouse_up(rct_window* w, rct_widgetindex widgetIndex)
             }
             w->picked_peep_old_x = peep->x;
             CoordsXYZ nullLoc{};
-            nullLoc.setNull();
+            nullLoc.SetNull();
             PeepPickupAction pickupAction{ PeepPickupType::Pickup, w->number, nullLoc, network_get_current_player_id() };
             pickupAction.SetCallback([peepnum = w->number](const GameAction* ga, const GameActions::Result* result) {
                 if (result->Error != GameActions::Status::Ok)
@@ -1132,7 +1132,7 @@ void window_guest_overview_tool_update(rct_window* w, rct_widgetindex widgetInde
     gMapSelectFlags &= ~MAP_SELECT_FLAG_ENABLE;
 
     auto mapCoords = footpath_get_coordinates_from_pos({ screenCoords.x, screenCoords.y + 16 }, nullptr, nullptr);
-    if (!mapCoords.isNull())
+    if (!mapCoords.IsNull())
     {
         gMapSelectFlags |= MAP_SELECT_FLAG_ENABLE;
         gMapSelectType = MAP_SELECT_TYPE_FULL;
@@ -1180,7 +1180,7 @@ void window_guest_overview_tool_down(rct_window* w, rct_widgetindex widgetIndex,
     TileElement* tileElement;
     auto destCoords = footpath_get_coordinates_from_pos({ screenCoords.x, screenCoords.y + 16 }, nullptr, &tileElement);
 
-    if (destCoords.isNull())
+    if (destCoords.IsNull())
         return;
 
     PeepPickupAction pickupAction{
diff --git a/src/openrct2-ui/windows/Map.cpp b/src/openrct2-ui/windows/Map.cpp
index 2891a7eada..dd8d141f48 100644
--- a/src/openrct2-ui/windows/Map.cpp
+++ b/src/openrct2-ui/windows/Map.cpp
@@ -1216,13 +1216,13 @@ static CoordsXYZD place_park_entrance_get_map_position(const ScreenCoordsXY& scr
     CoordsXYZD parkEntranceMapPosition{ 0, 0, 0, INVALID_DIRECTION };
     const CoordsXY mapCoords = ViewportInteractionGetTileStartAtCursor(screenCoords);
     parkEntranceMapPosition = { mapCoords.x, mapCoords.y, 0, INVALID_DIRECTION };
-    if (parkEntranceMapPosition.isNull())
+    if (parkEntranceMapPosition.IsNull())
         return parkEntranceMapPosition;
 
     auto surfaceElement = map_get_surface_element_at(mapCoords);
     if (surfaceElement == nullptr)
     {
-        parkEntranceMapPosition.setNull();
+        parkEntranceMapPosition.SetNull();
         return parkEntranceMapPosition;
     }
 
@@ -1257,7 +1257,7 @@ static void window_map_place_park_entrance_tool_update(const ScreenCoordsXY& scr
     gMapSelectFlags &= ~MAP_SELECT_FLAG_ENABLE_ARROW;
     gMapSelectFlags &= ~MAP_SELECT_FLAG_ENABLE_CONSTRUCT;
     CoordsXYZD parkEntrancePosition = place_park_entrance_get_map_position(screenCoords);
-    if (parkEntrancePosition.isNull())
+    if (parkEntrancePosition.IsNull())
     {
         park_entrance_remove_ghost();
         return;
@@ -1298,7 +1298,7 @@ static void window_map_set_peep_spawn_tool_update(const ScreenCoordsXY& screenCo
     gMapSelectFlags &= ~MAP_SELECT_FLAG_ENABLE;
     gMapSelectFlags &= ~MAP_SELECT_FLAG_ENABLE_ARROW;
     auto mapCoords = footpath_bridge_get_info_from_pos(screenCoords, &direction, &tileElement);
-    if (mapCoords.isNull())
+    if (mapCoords.IsNull())
         return;
 
     mapZ = tileElement->GetBaseZ();
@@ -1329,7 +1329,7 @@ static void window_map_place_park_entrance_tool_down(const ScreenCoordsXY& scree
     park_entrance_remove_ghost();
 
     CoordsXYZD parkEntrancePosition = place_park_entrance_get_map_position(screenCoords);
-    if (!parkEntrancePosition.isNull())
+    if (!parkEntrancePosition.IsNull())
     {
         auto gameAction = PlaceParkEntranceAction(parkEntrancePosition, gFootpathSelectedId);
         auto result = GameActions::Execute(&gameAction);
@@ -1351,7 +1351,7 @@ static void window_map_set_peep_spawn_tool_down(const ScreenCoordsXY& screenCoor
 
     // Verify footpath exists at location, and retrieve coordinates
     auto mapCoords = footpath_get_coordinates_from_pos(screenCoords, &direction, &tileElement);
-    if (mapCoords.isNull())
+    if (mapCoords.IsNull())
         return;
 
     mapZ = tileElement->GetBaseZ();
diff --git a/src/openrct2-ui/windows/MazeConstruction.cpp b/src/openrct2-ui/windows/MazeConstruction.cpp
index 1d85230e86..8ba2e75354 100644
--- a/src/openrct2-ui/windows/MazeConstruction.cpp
+++ b/src/openrct2-ui/windows/MazeConstruction.cpp
@@ -159,7 +159,7 @@ static void window_maze_construction_close(rct_window* w)
     auto ride = get_ride(_currentRideIndex);
     if (ride != nullptr)
     {
-        if (ride->overall_view.isNull())
+        if (ride->overall_view.IsNull())
         {
             int32_t savedPausedState = gGamePaused;
             gGamePaused = 0;
@@ -366,7 +366,7 @@ static void window_maze_construction_entrance_tooldown(const ScreenCoordsXY& scr
     gMapSelectFlags &= ~MAP_SELECT_FLAG_ENABLE_ARROW;
 
     CoordsXYZD entranceOrExitCoords = ride_get_entrance_or_exit_position_from_screen_position(screenCoords);
-    if (entranceOrExitCoords.isNull())
+    if (entranceOrExitCoords.IsNull())
         return;
 
     if (gRideEntranceExitPlaceDirection == INVALID_DIRECTION)
diff --git a/src/openrct2-ui/windows/Ride.cpp b/src/openrct2-ui/windows/Ride.cpp
index a2df6fa936..b79a7cec0e 100644
--- a/src/openrct2-ui/windows/Ride.cpp
+++ b/src/openrct2-ui/windows/Ride.cpp
@@ -1334,7 +1334,7 @@ static rct_window* window_ride_open_station(Ride* ride, StationIndex stationInde
     // View
     for (int32_t i = stationIndex; i >= 0; i--)
     {
-        if (ride->stations[i].Start.isNull())
+        if (ride->stations[i].Start.IsNull())
         {
             stationIndex--;
         }
@@ -1564,7 +1564,7 @@ static std::optional<StationIndex> GetStationIndexFromViewSelection(const rct_wi
     for (StationIndex index = 0; index < sizeof(ride->stations); ++index)
     {
         const auto& station = ride->stations[index];
-        if (!station.Start.isNull())
+        if (!station.Start.IsNull())
         {
             if (viewSelectionIndex-- == 0)
             {
@@ -1688,7 +1688,7 @@ static void window_ride_init_viewport(rct_window* w)
     w->viewport_focus_coordinates.height = w->height;
 
     // rct2: 0x006aec9c only used here so brought it into the function
-    if (!w->viewport && !ride->overall_view.isNull())
+    if (!w->viewport && !ride->overall_view.IsNull())
     {
         rct_widget* view_widget = &w->widgets[WIDX_VIEWPORT];
 
@@ -2558,14 +2558,14 @@ static rct_string_id window_ride_get_status_station(rct_window* w, Formatter& ft
     // Entrance / exit
     if (ride->status == RideStatus::Closed)
     {
-        if (ride_get_entrance_location(ride, static_cast<uint8_t>(*stationIndex)).isNull())
+        if (ride_get_entrance_location(ride, static_cast<uint8_t>(*stationIndex)).IsNull())
             stringId = STR_NO_ENTRANCE;
-        else if (ride_get_exit_location(ride, static_cast<uint8_t>(*stationIndex)).isNull())
+        else if (ride_get_exit_location(ride, static_cast<uint8_t>(*stationIndex)).IsNull())
             stringId = STR_NO_EXIT;
     }
     else
     {
-        if (ride_get_entrance_location(ride, static_cast<uint8_t>(*stationIndex)).isNull())
+        if (ride_get_entrance_location(ride, static_cast<uint8_t>(*stationIndex)).IsNull())
             stringId = STR_EXIT_ONLY;
     }
     // Queue length
diff --git a/src/openrct2-ui/windows/RideConstruction.cpp b/src/openrct2-ui/windows/RideConstruction.cpp
index b1ed717898..8d6c70f41e 100644
--- a/src/openrct2-ui/windows/RideConstruction.cpp
+++ b/src/openrct2-ui/windows/RideConstruction.cpp
@@ -2159,7 +2159,7 @@ static std::optional<CoordsXY> ride_get_place_position_from_screen_position(Scre
     if (!_trackPlaceCtrlState)
     {
         mapCoords = ViewportInteractionGetTileStartAtCursor(screenCoords);
-        if (mapCoords.isNull())
+        if (mapCoords.IsNull())
             return std::nullopt;
 
         _trackPlaceZ = 0;
diff --git a/src/openrct2-ui/windows/Staff.cpp b/src/openrct2-ui/windows/Staff.cpp
index d67cfb5dea..c6eb21d957 100644
--- a/src/openrct2-ui/windows/Staff.cpp
+++ b/src/openrct2-ui/windows/Staff.cpp
@@ -415,7 +415,7 @@ void window_staff_overview_mouseup(rct_window* w, rct_widgetindex widgetIndex)
         {
             w->picked_peep_old_x = peep->x;
             CoordsXYZ nullLoc{};
-            nullLoc.setNull();
+            nullLoc.SetNull();
             PeepPickupAction pickupAction{ PeepPickupType::Pickup, w->number, nullLoc, network_get_current_player_id() };
             pickupAction.SetCallback([peepnum = w->number](const GameAction* ga, const GameActions::Result* result) {
                 if (result->Error != GameActions::Status::Ok)
@@ -1138,7 +1138,7 @@ void window_staff_overview_tool_update(rct_window* w, rct_widgetindex widgetInde
     gMapSelectFlags &= ~MAP_SELECT_FLAG_ENABLE;
 
     auto mapCoords = footpath_get_coordinates_from_pos({ screenCoords.x, screenCoords.y + 16 }, nullptr, nullptr);
-    if (!mapCoords.isNull())
+    if (!mapCoords.IsNull())
     {
         gMapSelectFlags |= MAP_SELECT_FLAG_ENABLE;
         gMapSelectType = MAP_SELECT_TYPE_FULL;
@@ -1185,7 +1185,7 @@ void window_staff_overview_tool_down(rct_window* w, rct_widgetindex widgetIndex,
         TileElement* tileElement;
         auto destCoords = footpath_get_coordinates_from_pos({ screenCoords.x, screenCoords.y + 16 }, nullptr, &tileElement);
 
-        if (destCoords.isNull())
+        if (destCoords.IsNull())
             return;
 
         PeepPickupAction pickupAction{
@@ -1203,7 +1203,7 @@ void window_staff_overview_tool_down(rct_window* w, rct_widgetindex widgetIndex,
     {
         auto destCoords = footpath_get_coordinates_from_pos(screenCoords, nullptr, nullptr);
 
-        if (destCoords.isNull())
+        if (destCoords.IsNull())
             return;
 
         auto staff = TryGetEntity<Staff>(w->number);
@@ -1239,7 +1239,7 @@ void window_staff_overview_tool_drag(rct_window* w, rct_widgetindex widgetIndex,
 
     auto destCoords = footpath_get_coordinates_from_pos(screenCoords, nullptr, nullptr);
 
-    if (destCoords.isNull())
+    if (destCoords.IsNull())
         return;
 
     auto staff = TryGetEntity<Staff>(w->number);
diff --git a/src/openrct2-ui/windows/StaffList.cpp b/src/openrct2-ui/windows/StaffList.cpp
index e3458544f1..ef633b3bb2 100644
--- a/src/openrct2-ui/windows/StaffList.cpp
+++ b/src/openrct2-ui/windows/StaffList.cpp
@@ -552,7 +552,7 @@ private:
         int32_t direction{};
         TileElement* tileElement{};
         auto footpathCoords = footpath_get_coordinates_from_pos(screenCoords, &direction, &tileElement);
-        if (footpathCoords.isNull())
+        if (footpathCoords.IsNull())
             return nullptr;
 
         auto isPatrolAreaSet = staff_is_patrol_area_set_for_type(GetSelectedStaffType(), footpathCoords);
diff --git a/src/openrct2-ui/windows/TopToolbar.cpp b/src/openrct2-ui/windows/TopToolbar.cpp
index 3970a94872..e2b01cd018 100644
--- a/src/openrct2-ui/windows/TopToolbar.cpp
+++ b/src/openrct2-ui/windows/TopToolbar.cpp
@@ -1241,7 +1241,7 @@ static void sub_6E1F34_small_scenery(
 
     if (w == nullptr)
     {
-        gridPos.setNull();
+        gridPos.SetNull();
         return;
     }
 
@@ -1269,7 +1269,7 @@ static void sub_6E1F34_small_scenery(
             auto gridCoords = screen_get_map_xy_quadrant(screenPos, &quadrant);
             if (!gridCoords)
             {
-                gridPos.setNull();
+                gridPos.SetNull();
                 return;
             }
             gridPos = *gridCoords;
@@ -1283,7 +1283,7 @@ static void sub_6E1F34_small_scenery(
 
                 if (surfaceElement == nullptr)
                 {
-                    gridPos.setNull();
+                    gridPos.SetNull();
                     return;
                 }
 
@@ -1302,7 +1302,7 @@ static void sub_6E1F34_small_scenery(
             auto mapCoords = screen_get_map_xy_quadrant_with_z(screenPos, z, &quadrant);
             if (!mapCoords)
             {
-                gridPos.setNull();
+                gridPos.SetNull();
                 return;
             }
             gridPos = *mapCoords;
@@ -1318,7 +1318,7 @@ static void sub_6E1F34_small_scenery(
             gSceneryPlaceZ = z;
         }
 
-        if (gridPos.isNull())
+        if (gridPos.IsNull())
             return;
 
         uint8_t rotation = gWindowSceneryRotation;
@@ -1352,7 +1352,7 @@ static void sub_6E1F34_small_scenery(
 
         if (info.SpriteType == ViewportInteractionItem::None)
         {
-            gridPos.setNull();
+            gridPos.SetNull();
             return;
         }
 
@@ -1366,7 +1366,7 @@ static void sub_6E1F34_small_scenery(
 
             if (surfaceElement == nullptr)
             {
-                gridPos.setNull();
+                gridPos.SetNull();
                 return;
             }
 
@@ -1388,7 +1388,7 @@ static void sub_6E1F34_small_scenery(
         }
         else
         {
-            gridPos.setNull();
+            gridPos.SetNull();
         }
         // If SHIFT pressed
         if (gSceneryShiftPressed)
@@ -1401,7 +1401,7 @@ static void sub_6E1F34_small_scenery(
         gSceneryPlaceZ = z;
     }
 
-    if (gridPos.isNull())
+    if (gridPos.IsNull())
         return;
 
     gridPos = gridPos.ToTileStart();
@@ -1431,7 +1431,7 @@ static void sub_6E1F34_path_item(
 
     if (w == nullptr)
     {
-        gridPos.setNull();
+        gridPos.SetNull();
         return;
     }
 
@@ -1445,7 +1445,7 @@ static void sub_6E1F34_path_item(
 
     if (info.SpriteType == ViewportInteractionItem::None)
     {
-        gridPos.setNull();
+        gridPos.SetNull();
         return;
     }
 
@@ -1464,7 +1464,7 @@ static void sub_6E1F34_wall(
 
     if (w == nullptr)
     {
-        gridPos.setNull();
+        gridPos.SetNull();
         return;
     }
 
@@ -1487,7 +1487,7 @@ static void sub_6E1F34_wall(
         auto gridCoords = screen_get_map_xy_side(screenPos, &edge);
         if (!gridCoords)
         {
-            gridPos.setNull();
+            gridPos.SetNull();
             return;
         }
         gridPos = *gridCoords;
@@ -1501,7 +1501,7 @@ static void sub_6E1F34_wall(
 
             if (surfaceElement == nullptr)
             {
-                gridPos.setNull();
+                gridPos.SetNull();
                 return;
             }
 
@@ -1519,7 +1519,7 @@ static void sub_6E1F34_wall(
         auto mapCoords = screen_get_map_xy_side_with_z(screenPos, z, &edge);
         if (!mapCoords)
         {
-            gridPos.setNull();
+            gridPos.SetNull();
             return;
         }
         gridPos = *mapCoords;
@@ -1535,7 +1535,7 @@ static void sub_6E1F34_wall(
         gSceneryPlaceZ = z;
     }
 
-    if (gridPos.isNull())
+    if (gridPos.IsNull())
         return;
 
     if (gConfigGeneral.virtual_floor_style != VirtualFloorStyles::Off)
@@ -1553,7 +1553,7 @@ static void sub_6E1F34_large_scenery(
 
     if (w == nullptr)
     {
-        gridPos.setNull();
+        gridPos.SetNull();
         return;
     }
 
@@ -1580,7 +1580,7 @@ static void sub_6E1F34_large_scenery(
         const CoordsXY mapCoords = ViewportInteractionGetTileStartAtCursor(screenPos);
         gridPos = mapCoords;
 
-        if (gridPos.isNull())
+        if (gridPos.IsNull())
             return;
 
         gSceneryPlaceZ = 0;
@@ -1592,7 +1592,7 @@ static void sub_6E1F34_large_scenery(
 
             if (surfaceElement == nullptr)
             {
-                gridPos.setNull();
+                gridPos.SetNull();
                 return;
             }
 
@@ -1614,7 +1614,7 @@ static void sub_6E1F34_large_scenery(
         }
         else
         {
-            gridPos.setNull();
+            gridPos.SetNull();
         }
 
         // If SHIFT pressed
@@ -1628,7 +1628,7 @@ static void sub_6E1F34_large_scenery(
         gSceneryPlaceZ = z;
     }
 
-    if (gridPos.isNull())
+    if (gridPos.IsNull())
         return;
 
     gridPos = gridPos.ToTileStart();
@@ -1653,7 +1653,7 @@ static void sub_6E1F34_banner(
 
     if (w == nullptr)
     {
-        gridPos.setNull();
+        gridPos.SetNull();
         return;
     }
 
@@ -1667,7 +1667,7 @@ static void sub_6E1F34_banner(
 
     if (info.SpriteType == ViewportInteractionItem::None)
     {
-        gridPos.setNull();
+        gridPos.SetNull();
         return;
     }
 
@@ -1728,7 +1728,7 @@ static void window_top_toolbar_scenery_tool_down(const ScreenCoordsXY& windowPos
             uint8_t quadrant;
             Direction rotation;
             sub_6E1F34_small_scenery(windowPos, selectedScenery, gridPos, &quadrant, &rotation);
-            if (gridPos.isNull())
+            if (gridPos.IsNull())
                 return;
 
             int32_t quantity = 1;
@@ -1848,7 +1848,7 @@ static void window_top_toolbar_scenery_tool_down(const ScreenCoordsXY& windowPos
         {
             int32_t z;
             sub_6E1F34_path_item(windowPos, selectedScenery, gridPos, &z);
-            if (gridPos.isNull())
+            if (gridPos.IsNull())
                 return;
 
             auto footpathAdditionPlaceAction = FootpathAdditionPlaceAction({ gridPos, z }, selectedScenery + 1);
@@ -1867,7 +1867,7 @@ static void window_top_toolbar_scenery_tool_down(const ScreenCoordsXY& windowPos
         {
             uint8_t edges;
             sub_6E1F34_wall(windowPos, selectedScenery, gridPos, &edges);
-            if (gridPos.isNull())
+            if (gridPos.IsNull())
                 return;
 
             uint8_t zAttemptRange = 1;
@@ -1919,7 +1919,7 @@ static void window_top_toolbar_scenery_tool_down(const ScreenCoordsXY& windowPos
         {
             Direction direction;
             sub_6E1F34_large_scenery(windowPos, selectedScenery, gridPos, &direction);
-            if (gridPos.isNull())
+            if (gridPos.IsNull())
                 return;
 
             uint8_t zAttemptRange = 1;
@@ -1977,7 +1977,7 @@ static void window_top_toolbar_scenery_tool_down(const ScreenCoordsXY& windowPos
             int32_t z;
             Direction direction;
             sub_6E1F34_banner(windowPos, selectedScenery, gridPos, &z, &direction);
-            if (gridPos.isNull())
+            if (gridPos.IsNull())
                 return;
 
             CoordsXYZD loc{ gridPos, z, direction };
@@ -2628,7 +2628,7 @@ static void top_toolbar_tool_update_scenery(const ScreenCoordsXY& screenPos)
 
             sub_6E1F34_small_scenery(screenPos, selection.EntryIndex, mapTile, &quadrant, &rotation);
 
-            if (mapTile.isNull())
+            if (mapTile.IsNull())
             {
                 scenery_remove_ghost_tool_placement();
                 return;
@@ -2706,7 +2706,7 @@ static void top_toolbar_tool_update_scenery(const ScreenCoordsXY& screenPos)
 
             sub_6E1F34_path_item(screenPos, selection.EntryIndex, mapTile, &z);
 
-            if (mapTile.isNull())
+            if (mapTile.IsNull())
             {
                 scenery_remove_ghost_tool_placement();
                 return;
@@ -2741,7 +2741,7 @@ static void top_toolbar_tool_update_scenery(const ScreenCoordsXY& screenPos)
 
             sub_6E1F34_wall(screenPos, selection.EntryIndex, mapTile, &edge);
 
-            if (mapTile.isNull())
+            if (mapTile.IsNull())
             {
                 scenery_remove_ghost_tool_placement();
                 return;
@@ -2796,7 +2796,7 @@ static void top_toolbar_tool_update_scenery(const ScreenCoordsXY& screenPos)
 
             sub_6E1F34_large_scenery(screenPos, selection.EntryIndex, mapTile, &direction);
 
-            if (mapTile.isNull())
+            if (mapTile.IsNull())
             {
                 scenery_remove_ghost_tool_placement();
                 return;
@@ -2863,7 +2863,7 @@ static void top_toolbar_tool_update_scenery(const ScreenCoordsXY& screenPos)
 
             sub_6E1F34_banner(screenPos, selection.EntryIndex, mapTile, &z, &direction);
 
-            if (mapTile.isNull())
+            if (mapTile.IsNull())
             {
                 scenery_remove_ghost_tool_placement();
                 return;
diff --git a/src/openrct2-ui/windows/TrackDesignPlace.cpp b/src/openrct2-ui/windows/TrackDesignPlace.cpp
index 58da05f5bd..ce83d160f7 100644
--- a/src/openrct2-ui/windows/TrackDesignPlace.cpp
+++ b/src/openrct2-ui/windows/TrackDesignPlace.cpp
@@ -152,7 +152,7 @@ rct_window* window_track_place_open(const track_design_file_ref* tdFileRef)
     window_push_others_right(w);
     show_gridlines();
     _window_track_place_last_cost = MONEY32_UNDEFINED;
-    _windowTrackPlaceLast.setNull();
+    _windowTrackPlaceLast.SetNull();
     _currentTrackPieceDirection = (2 - get_current_rotation()) & 3;
 
     window_track_place_clear_mini_preview();
@@ -193,14 +193,14 @@ static void window_track_place_mouseup(rct_window* w, rct_widgetindex widgetInde
             window_track_place_clear_provisional();
             _currentTrackPieceDirection = (_currentTrackPieceDirection + 1) & 3;
             w->Invalidate();
-            _windowTrackPlaceLast.setNull();
+            _windowTrackPlaceLast.SetNull();
             window_track_place_draw_mini_preview(_trackDesign.get());
             break;
         case WIDX_MIRROR:
             track_design_mirror(_trackDesign.get());
             _currentTrackPieceDirection = (0 - _currentTrackPieceDirection) & 3;
             w->Invalidate();
-            _windowTrackPlaceLast.setNull();
+            _windowTrackPlaceLast.SetNull();
             window_track_place_draw_mini_preview(_trackDesign.get());
             break;
         case WIDX_SELECT_DIFFERENT_DESIGN:
@@ -259,7 +259,7 @@ static void window_track_place_toolupdate(rct_window* w, rct_widgetindex widgetI
 
     // Get the tool map position
     CoordsXY mapCoords = ViewportInteractionGetTileStartAtCursor(screenCoords);
-    if (mapCoords.isNull())
+    if (mapCoords.IsNull())
     {
         window_track_place_clear_provisional();
         return;
@@ -324,7 +324,7 @@ static void window_track_place_tooldown(rct_window* w, rct_widgetindex widgetInd
     gMapSelectFlags &= ~MAP_SELECT_FLAG_ENABLE_ARROW;
 
     const CoordsXY mapCoords = ViewportInteractionGetTileStartAtCursor(screenCoords);
-    if (mapCoords.isNull())
+    if (mapCoords.IsNull())
         return;
 
     // Try increasing Z until a feasible placement is found
diff --git a/src/openrct2/ReplayManager.cpp b/src/openrct2/ReplayManager.cpp
index e3022c3190..94fae3d0ba 100644
--- a/src/openrct2/ReplayManager.cpp
+++ b/src/openrct2/ReplayManager.cpp
@@ -857,7 +857,7 @@ namespace OpenRCT2
                 }
 
                 // Focus camera on event.
-                if (isPositionValid && !result->Position.isNull())
+                if (isPositionValid && !result->Position.IsNull())
                 {
                     auto* mainWindow = window_get_main();
                     if (mainWindow != nullptr)
diff --git a/src/openrct2/actions/GameAction.cpp b/src/openrct2/actions/GameAction.cpp
index adc8606a62..0186df8e7e 100644
--- a/src/openrct2/actions/GameAction.cpp
+++ b/src/openrct2/actions/GameAction.cpp
@@ -492,7 +492,7 @@ namespace GameActions
                         network_add_player_money_spent(playerIndex, result->Cost);
                     }
 
-                    if (!result->Position.isNull())
+                    if (!result->Position.IsNull())
                     {
                         network_set_player_last_action_coord(playerIndex, result->Position);
                     }
diff --git a/src/openrct2/actions/PeepPickupAction.cpp b/src/openrct2/actions/PeepPickupAction.cpp
index bee844a0e0..db89689ddd 100644
--- a/src/openrct2/actions/PeepPickupAction.cpp
+++ b/src/openrct2/actions/PeepPickupAction.cpp
@@ -43,7 +43,7 @@ GameActions::Result::Ptr PeepPickupAction::Query() const
         return MakeResult(GameActions::Status::InvalidParameters, STR_ERR_CANT_PLACE_PERSON_HERE);
     }
 
-    if (!_loc.isNull() && !LocationValid(_loc))
+    if (!_loc.IsNull() && !LocationValid(_loc))
     {
         return MakeResult(GameActions::Status::InvalidParameters, STR_ERR_CANT_PLACE_PERSON_HERE);
     }
diff --git a/src/openrct2/actions/RideCreateAction.cpp b/src/openrct2/actions/RideCreateAction.cpp
index f142b1729f..bf09c66fe9 100644
--- a/src/openrct2/actions/RideCreateAction.cpp
+++ b/src/openrct2/actions/RideCreateAction.cpp
@@ -140,12 +140,12 @@ GameActions::Result::Ptr RideCreateAction::Execute() const
     ride->type = _rideType;
     ride->subtype = rideEntryIndex;
     ride->SetColourPreset(_colour1);
-    ride->overall_view.setNull();
+    ride->overall_view.SetNull();
     ride->SetNameToDefault();
 
     for (int32_t i = 0; i < MAX_STATIONS; i++)
     {
-        ride->stations[i].Start.setNull();
+        ride->stations[i].Start.SetNull();
         ride_clear_entrance_location(ride, i);
         ride_clear_exit_location(ride, i);
         ride->stations[i].TrainAtStation = RideStation::NO_TRAIN;
diff --git a/src/openrct2/actions/RideDemolishAction.cpp b/src/openrct2/actions/RideDemolishAction.cpp
index 3591fe98c0..e53af79c82 100644
--- a/src/openrct2/actions/RideDemolishAction.cpp
+++ b/src/openrct2/actions/RideDemolishAction.cpp
@@ -147,7 +147,7 @@ GameActions::Result::Ptr RideDemolishAction::DemolishRide(Ride* ride) const
     res->Expenditure = ExpenditureType::RideConstruction;
     res->Cost = refundPrice;
 
-    if (!ride->overall_view.isNull())
+    if (!ride->overall_view.IsNull())
     {
         auto xy = ride->overall_view.ToTileCentre();
         res->Position = { xy, tile_element_height(xy) };
@@ -266,7 +266,7 @@ GameActions::Result::Ptr RideDemolishAction::RefurbishRide(Ride* ride) const
 
     ride->window_invalidate_flags |= RIDE_INVALIDATE_RIDE_MAINTENANCE | RIDE_INVALIDATE_RIDE_CUSTOMER;
 
-    if (!ride->overall_view.isNull())
+    if (!ride->overall_view.IsNull())
     {
         auto location = ride->overall_view.ToTileCentre();
         res->Position = { location, tile_element_height(location) };
diff --git a/src/openrct2/actions/RideEntranceExitPlaceAction.cpp b/src/openrct2/actions/RideEntranceExitPlaceAction.cpp
index df2b87bf2c..fc20629013 100644
--- a/src/openrct2/actions/RideEntranceExitPlaceAction.cpp
+++ b/src/openrct2/actions/RideEntranceExitPlaceAction.cpp
@@ -76,7 +76,7 @@ GameActions::Result::Ptr RideEntranceExitPlaceAction::Query() const
 
     const auto location = _isExit ? ride_get_exit_location(ride, _stationNum) : ride_get_entrance_location(ride, _stationNum);
 
-    if (!location.isNull())
+    if (!location.IsNull())
     {
         auto rideEntranceExitRemove = RideEntranceExitRemoveAction(location.ToCoordsXY(), _rideIndex, _stationNum, _isExit);
         rideEntranceExitRemove.SetFlags(GetFlags());
@@ -143,7 +143,7 @@ GameActions::Result::Ptr RideEntranceExitPlaceAction::Execute() const
     }
 
     const auto location = _isExit ? ride_get_exit_location(ride, _stationNum) : ride_get_entrance_location(ride, _stationNum);
-    if (!location.isNull())
+    if (!location.IsNull())
     {
         auto rideEntranceExitRemove = RideEntranceExitRemoveAction(location.ToCoordsXY(), _rideIndex, _stationNum, _isExit);
         rideEntranceExitRemove.SetFlags(GetFlags());
diff --git a/src/openrct2/actions/RideSetAppearanceAction.cpp b/src/openrct2/actions/RideSetAppearanceAction.cpp
index 551d1edd5e..53b76ff27a 100644
--- a/src/openrct2/actions/RideSetAppearanceAction.cpp
+++ b/src/openrct2/actions/RideSetAppearanceAction.cpp
@@ -142,7 +142,7 @@ GameActions::Result::Ptr RideSetAppearanceAction::Execute() const
     window_invalidate_by_number(WC_RIDE, _rideIndex);
 
     auto res = std::make_unique<GameActions::Result>();
-    if (!ride->overall_view.isNull())
+    if (!ride->overall_view.IsNull())
     {
         auto location = ride->overall_view.ToTileCentre();
         res->Position = { location, tile_element_height(location) };
diff --git a/src/openrct2/actions/RideSetPriceAction.cpp b/src/openrct2/actions/RideSetPriceAction.cpp
index 374bd4d9a0..caf508d1e0 100644
--- a/src/openrct2/actions/RideSetPriceAction.cpp
+++ b/src/openrct2/actions/RideSetPriceAction.cpp
@@ -87,7 +87,7 @@ GameActions::Result::Ptr RideSetPriceAction::Execute() const
         return MakeResult(GameActions::Status::InvalidParameters, STR_NONE);
     }
 
-    if (!ride->overall_view.isNull())
+    if (!ride->overall_view.IsNull())
     {
         auto location = ride->overall_view.ToTileCentre();
         res->Position = { location, tile_element_height(location) };
diff --git a/src/openrct2/actions/RideSetSettingAction.cpp b/src/openrct2/actions/RideSetSettingAction.cpp
index fb7b8d506b..220c0ced3d 100644
--- a/src/openrct2/actions/RideSetSettingAction.cpp
+++ b/src/openrct2/actions/RideSetSettingAction.cpp
@@ -228,7 +228,7 @@ GameActions::Result::Ptr RideSetSettingAction::Execute() const
     }
 
     auto res = std::make_unique<GameActions::Result>();
-    if (!ride->overall_view.isNull())
+    if (!ride->overall_view.IsNull())
     {
         auto location = ride->overall_view.ToTileCentre();
         res->Position = { location, tile_element_height(location) };
diff --git a/src/openrct2/actions/RideSetStatusAction.cpp b/src/openrct2/actions/RideSetStatusAction.cpp
index 2750d639f3..f6cffc84aa 100644
--- a/src/openrct2/actions/RideSetStatusAction.cpp
+++ b/src/openrct2/actions/RideSetStatusAction.cpp
@@ -131,7 +131,7 @@ GameActions::Result::Ptr RideSetStatusAction::Execute() const
     Formatter ft(res->ErrorMessageArgs.data());
     ft.Increment(6);
     ride->FormatNameTo(ft);
-    if (!ride->overall_view.isNull())
+    if (!ride->overall_view.IsNull())
     {
         auto location = ride->overall_view.ToTileCentre();
         res->Position = { location, tile_element_height(location) };
diff --git a/src/openrct2/actions/RideSetVehicleAction.cpp b/src/openrct2/actions/RideSetVehicleAction.cpp
index 167d2cb0b2..320aeafe12 100644
--- a/src/openrct2/actions/RideSetVehicleAction.cpp
+++ b/src/openrct2/actions/RideSetVehicleAction.cpp
@@ -192,7 +192,7 @@ GameActions::Result::Ptr RideSetVehicleAction::Execute() const
     ride->UpdateMaxVehicles();
 
     auto res = std::make_unique<GameActions::Result>();
-    if (!ride->overall_view.isNull())
+    if (!ride->overall_view.IsNull())
     {
         auto location = ride->overall_view.ToTileCentre();
         res->Position = { location, tile_element_height(res->Position) };
diff --git a/src/openrct2/actions/TrackPlaceAction.cpp b/src/openrct2/actions/TrackPlaceAction.cpp
index ab58057ab4..aeb736728c 100644
--- a/src/openrct2/actions/TrackPlaceAction.cpp
+++ b/src/openrct2/actions/TrackPlaceAction.cpp
@@ -534,7 +534,7 @@ GameActions::Result::Ptr TrackPlaceAction::Execute() const
         }
 
         int32_t entranceDirections = 0;
-        if (!ride->overall_view.isNull())
+        if (!ride->overall_view.IsNull())
         {
             if (!(GetFlags() & GAME_COMMAND_FLAG_NO_SPEND))
             {
@@ -542,7 +542,7 @@ GameActions::Result::Ptr TrackPlaceAction::Execute() const
             }
         }
 
-        if (entranceDirections & TRACK_SEQUENCE_FLAG_ORIGIN || ride->overall_view.isNull())
+        if (entranceDirections & TRACK_SEQUENCE_FLAG_ORIGIN || ride->overall_view.IsNull())
         {
             ride->overall_view = mapLoc;
         }
diff --git a/src/openrct2/interface/Viewport.cpp b/src/openrct2/interface/Viewport.cpp
index 3b6fc35b4b..6358d3c650 100644
--- a/src/openrct2/interface/Viewport.cpp
+++ b/src/openrct2/interface/Viewport.cpp
@@ -106,7 +106,7 @@ std::optional<ScreenCoordsXY> centre_2d_coordinates(const CoordsXYZ& loc, rct_vi
     // If the start location was invalid
     // propagate the invalid location to the output.
     // This fixes a bug that caused the game to enter an infinite loop.
-    if (loc.isNull())
+    if (loc.IsNull())
     {
         return std::nullopt;
     }
diff --git a/src/openrct2/management/NewsItem.cpp b/src/openrct2/management/NewsItem.cpp
index c93eabe5af..e9cd6b3147 100644
--- a/src/openrct2/management/NewsItem.cpp
+++ b/src/openrct2/management/NewsItem.cpp
@@ -212,7 +212,7 @@ std::optional<CoordsXYZ> News::GetSubjectLocation(News::ItemType type, int32_t s
         case News::ItemType::Ride:
         {
             Ride* ride = get_ride(subject);
-            if (ride == nullptr || ride->overall_view.isNull())
+            if (ride == nullptr || ride->overall_view.IsNull())
             {
                 break;
             }
@@ -271,7 +271,7 @@ std::optional<CoordsXYZ> News::GetSubjectLocation(News::ItemType type, int32_t s
             auto subjectUnsigned = static_cast<uint32_t>(subject);
             auto subjectXY = CoordsXY{ static_cast<int16_t>(subjectUnsigned & 0xFFFF),
                                        static_cast<int16_t>(subjectUnsigned >> 16) };
-            if (!subjectXY.isNull())
+            if (!subjectXY.IsNull())
             {
                 subjectLoc = CoordsXYZ{ subjectXY, tile_element_height(subjectXY) };
             }
diff --git a/src/openrct2/peep/Guest.cpp b/src/openrct2/peep/Guest.cpp
index bcb958d5bc..b1bc71cba3 100644
--- a/src/openrct2/peep/Guest.cpp
+++ b/src/openrct2/peep/Guest.cpp
@@ -2460,7 +2460,7 @@ static void peep_choose_seat_from_car(Peep* peep, Ride* ride, Vehicle* vehicle)
 void Guest::GoToRideEntrance(Ride* ride)
 {
     TileCoordsXYZD tileLocation = ride_get_entrance_location(ride, CurrentRideStation);
-    if (tileLocation.isNull())
+    if (tileLocation.IsNull())
     {
         RemoveFromQueue();
         return;
@@ -3550,7 +3550,7 @@ static uint8_t peep_get_waypointed_seat_location(
 static void peep_update_ride_leave_entrance_waypoints(Peep* peep, Ride* ride)
 {
     TileCoordsXYZD entranceLocation = ride_get_entrance_location(ride, peep->CurrentRideStation);
-    Guard::Assert(!entranceLocation.isNull());
+    Guard::Assert(!entranceLocation.IsNull());
     uint8_t direction_entrance = entranceLocation.direction;
 
     CoordsXY waypoint = ride->stations[peep->CurrentRideStation].Start.ToTileCentre();
@@ -3632,7 +3632,7 @@ void Guest::UpdateRideAdvanceThroughEntrance()
     if (ride->GetRideTypeDescriptor().HasFlag(RIDE_TYPE_FLAG_NO_VEHICLES))
     {
         auto entranceLocation = ride_get_entrance_location(ride, CurrentRideStation).ToCoordsXYZD();
-        Guard::Assert(!entranceLocation.isNull());
+        Guard::Assert(!entranceLocation.IsNull());
 
         if (ride->type == RIDE_TYPE_MAZE)
         {
@@ -3744,7 +3744,7 @@ static void peep_go_to_ride_exit(Peep* peep, Ride* ride, int16_t x, int16_t y, i
 
     Guard::Assert(peep->CurrentRideStation < MAX_STATIONS);
     auto exit = ride_get_exit_location(ride, peep->CurrentRideStation);
-    Guard::Assert(!exit.isNull());
+    Guard::Assert(!exit.IsNull());
     x = exit.x;
     y = exit.y;
     x *= 32;
@@ -4210,7 +4210,7 @@ void Guest::UpdateRideLeaveVehicle()
     }
 
     auto exitLocation = ride_get_exit_location(ride, CurrentRideStation).ToCoordsXYZD();
-    Guard::Assert(!exitLocation.isNull());
+    Guard::Assert(!exitLocation.IsNull());
 
     auto waypointLoc = CoordsXYZ{ ride->stations[CurrentRideStation].Start.ToTileCentre(),
                                   exitLocation.z + ride->GetRideTypeDescriptor().Heights.PlatformHeight };
diff --git a/src/openrct2/peep/GuestPathfinding.cpp b/src/openrct2/peep/GuestPathfinding.cpp
index 8a2f474810..708aa59be2 100644
--- a/src/openrct2/peep/GuestPathfinding.cpp
+++ b/src/openrct2/peep/GuestPathfinding.cpp
@@ -1400,7 +1400,7 @@ Direction peep_pathfind_choose_direction(const TileCoordsXYZ& loc, Peep* peep)
 
         // Clear pathfinding history
         TileCoordsXYZD nullPos;
-        nullPos.setNull();
+        nullPos.SetNull();
 
         std::fill(std::begin(peep->PathfindHistory), std::end(peep->PathfindHistory), nullPos);
 #if defined(DEBUG_LEVEL_1) && DEBUG_LEVEL_1
@@ -1461,7 +1461,7 @@ Direction peep_pathfind_choose_direction(const TileCoordsXYZ& loc, Peep* peep)
 
             for (auto& entry : _peepPathFindHistory)
             {
-                entry.location.setNull();
+                entry.location.SetNull();
                 entry.direction = INVALID_DIRECTION;
             }
 
@@ -2185,7 +2185,7 @@ int32_t guest_path_finding(Guest* peep)
     for (StationIndex stationNum = 0; stationNum < MAX_STATIONS; ++stationNum)
     {
         // Skip if stationNum has no entrance (so presumably an exit only station)
-        if (ride_get_entrance_location(ride, stationNum).isNull())
+        if (ride_get_entrance_location(ride, stationNum).IsNull())
             continue;
 
         numEntranceStations++;
@@ -2303,7 +2303,7 @@ void Peep::ResetPathfindGoal()
     }
 #endif // defined(DEBUG_LEVEL_1) && DEBUG_LEVEL_1
 
-    PathfindGoal.setNull();
+    PathfindGoal.SetNull();
     PathfindGoal.direction = INVALID_DIRECTION;
 }
 
diff --git a/src/openrct2/peep/Staff.cpp b/src/openrct2/peep/Staff.cpp
index 423290e8fa..3cf1d8dafe 100644
--- a/src/openrct2/peep/Staff.cpp
+++ b/src/openrct2/peep/Staff.cpp
@@ -712,7 +712,7 @@ Direction Staff::MechanicDirectionSurface() const
     if (ride != nullptr && (State == PeepState::Answering || State == PeepState::HeadingToInspection) && (scenario_rand() & 1))
     {
         auto location = ride_get_exit_location(ride, CurrentRideStation);
-        if (location.isNull())
+        if (location.IsNull())
         {
             location = ride_get_entrance_location(ride, CurrentRideStation);
         }
@@ -793,12 +793,12 @@ Direction Staff::MechanicDirectionPath(uint8_t validDirections, PathElement* pat
         /* Find location of the exit for the target ride station
          * or if the ride has no exit, the entrance. */
         TileCoordsXYZD location = ride_get_exit_location(ride, CurrentRideStation);
-        if (location.isNull())
+        if (location.IsNull())
         {
             location = ride_get_entrance_location(ride, CurrentRideStation);
 
             // If no entrance is present either. This is an incorrect state.
-            if (location.isNull())
+            if (location.IsNull())
             {
                 return MechanicDirectionPathRand(pathDirections);
             }
@@ -1380,7 +1380,7 @@ void Staff::UpdateHeadingToInspect()
         return;
     }
 
-    if (ride_get_exit_location(ride, CurrentRideStation).isNull())
+    if (ride_get_exit_location(ride, CurrentRideStation).IsNull())
     {
         ride->lifecycle_flags &= ~RIDE_LIFECYCLE_DUE_INSPECTION;
         SetState(PeepState::Falling);
@@ -1435,7 +1435,7 @@ void Staff::UpdateHeadingToInspect()
 
         if (pathingResult & PATHING_RIDE_ENTRANCE)
         {
-            if (!ride_get_exit_location(ride, exit_index).isNull())
+            if (!ride_get_exit_location(ride, exit_index).IsNull())
             {
                 return;
             }
@@ -1542,7 +1542,7 @@ void Staff::UpdateAnswering()
 
         if (pathingResult & PATHING_RIDE_ENTRANCE)
         {
-            if (!ride_get_exit_location(ride, exit_index).isNull())
+            if (!ride_get_exit_location(ride, exit_index).IsNull())
             {
                 return;
             }
@@ -2275,7 +2275,7 @@ bool Staff::UpdateFixingMoveToStationEnd(bool firstRun, const Ride* ride)
         }
 
         auto stationPos = ride->stations[CurrentRideStation].GetStart();
-        if (stationPos.isNull())
+        if (stationPos.IsNull())
         {
             return true;
         }
@@ -2361,7 +2361,7 @@ bool Staff::UpdateFixingMoveToStationStart(bool firstRun, const Ride* ride)
         }
 
         auto stationPosition = ride->stations[CurrentRideStation].GetStart();
-        if (stationPosition.isNull())
+        if (stationPosition.IsNull())
         {
             return true;
         }
@@ -2505,11 +2505,11 @@ bool Staff::UpdateFixingMoveToStationExit(bool firstRun, const Ride* ride)
     if (!firstRun)
     {
         auto stationPosition = ride_get_exit_location(ride, CurrentRideStation).ToCoordsXY();
-        if (stationPosition.isNull())
+        if (stationPosition.IsNull())
         {
             stationPosition = ride_get_entrance_location(ride, CurrentRideStation).ToCoordsXY();
 
-            if (stationPosition.isNull())
+            if (stationPosition.IsNull())
             {
                 return true;
             }
@@ -2587,11 +2587,11 @@ bool Staff::UpdateFixingLeaveByEntranceExit(bool firstRun, const Ride* ride)
     if (!firstRun)
     {
         auto exitPosition = ride_get_exit_location(ride, CurrentRideStation).ToCoordsXY();
-        if (exitPosition.isNull())
+        if (exitPosition.IsNull())
         {
             exitPosition = ride_get_entrance_location(ride, CurrentRideStation).ToCoordsXY();
 
-            if (exitPosition.isNull())
+            if (exitPosition.IsNull())
             {
                 SetState(PeepState::Falling);
                 return false;
diff --git a/src/openrct2/rct1/S4Importer.cpp b/src/openrct2/rct1/S4Importer.cpp
index efcdeb95d3..436fc72c41 100644
--- a/src/openrct2/rct1/S4Importer.cpp
+++ b/src/openrct2/rct1/S4Importer.cpp
@@ -773,9 +773,9 @@ namespace RCT1
             }
 
             // Station
-            if (src->overall_view.isNull())
+            if (src->overall_view.IsNull())
             {
-                dst->overall_view.setNull();
+                dst->overall_view.SetNull();
             }
             else
             {
@@ -784,9 +784,9 @@ namespace RCT1
 
             for (int32_t i = 0; i < RCT12_MAX_STATIONS_PER_RIDE; i++)
             {
-                if (src->station_starts[i].isNull())
+                if (src->station_starts[i].IsNull())
                 {
-                    dst->stations[i].Start.setNull();
+                    dst->stations[i].Start.SetNull();
                 }
                 else
                 {
@@ -800,13 +800,13 @@ namespace RCT1
                 dst->stations[i].TrainAtStation = src->station_depart[i];
 
                 // Direction is fixed later.
-                if (src->entrance[i].isNull())
+                if (src->entrance[i].IsNull())
                     ride_clear_entrance_location(dst, i);
                 else
                     ride_set_entrance_location(
                         dst, i, { src->entrance[i].x, src->entrance[i].y, src->station_height[i] / 2, 0 });
 
-                if (src->exit[i].isNull())
+                if (src->exit[i].IsNull())
                     ride_clear_exit_location(dst, i);
                 else
                     ride_set_exit_location(dst, i, { src->exit[i].x, src->exit[i].y, src->station_height[i] / 2, 0 });
@@ -821,7 +821,7 @@ namespace RCT1
             // All other values take 0 as their default. Since they're already memset to that, no need to do it again.
             for (int32_t i = RCT12_MAX_STATIONS_PER_RIDE; i < MAX_STATIONS; i++)
             {
-                dst->stations[i].Start.setNull();
+                dst->stations[i].Start.SetNull();
                 dst->stations[i].TrainAtStation = RideStation::NO_TRAIN;
                 ride_clear_entrance_location(dst, i);
                 ride_clear_exit_location(dst, i);
@@ -951,9 +951,9 @@ namespace RCT1
                                                        src->chairlift_bullwheel_z[i] / 2 };
             }
 
-            if (src->cur_test_track_location.isNull())
+            if (src->cur_test_track_location.IsNull())
             {
-                dst->CurTestTrackLocation.setNull();
+                dst->CurTestTrackLocation.SetNull();
             }
             else
             {
@@ -2748,9 +2748,9 @@ namespace RCT1
         dst->TrackSubposition = VehicleTrackSubposition{ src->TrackSubposition };
         dst->TrackLocation = { src->track_x, src->track_y, src->track_z };
         dst->current_station = src->current_station;
-        if (src->boat_location.isNull() || ride->mode != RideMode::BoatHire || statusSrc != ::Vehicle::Status::TravellingBoat)
+        if (src->boat_location.IsNull() || ride->mode != RideMode::BoatHire || statusSrc != ::Vehicle::Status::TravellingBoat)
         {
-            dst->BoatLocation.setNull();
+            dst->BoatLocation.SetNull();
             dst->SetTrackDirection(src->GetTrackDirection());
             dst->SetTrackType(RCT1TrackTypeToOpenRCT2(src->GetTrackType(), ride->type));
         }
diff --git a/src/openrct2/rct12/RCT12.h b/src/openrct2/rct12/RCT12.h
index 94d4368330..418b3f08a6 100644
--- a/src/openrct2/rct12/RCT12.h
+++ b/src/openrct2/rct12/RCT12.h
@@ -199,12 +199,12 @@ struct RCT12xy8
         uint16_t xy;
     };
 
-    bool isNull() const
+    bool IsNull() const
     {
         return xy == RCT12_XY8_UNDEFINED;
     }
 
-    void setNull()
+    void SetNull()
     {
         xy = RCT12_XY8_UNDEFINED;
     }
diff --git a/src/openrct2/rct2/S6Exporter.cpp b/src/openrct2/rct2/S6Exporter.cpp
index c8394c5fd0..2cffe9bc09 100644
--- a/src/openrct2/rct2/S6Exporter.cpp
+++ b/src/openrct2/rct2/S6Exporter.cpp
@@ -670,9 +670,9 @@ void S6Exporter::ExportRide(rct2_ride* dst, const Ride* src)
         dst->name_arguments_number = src->default_name_number;
     }
 
-    if (src->overall_view.isNull())
+    if (src->overall_view.IsNull())
     {
-        dst->overall_view.setNull();
+        dst->overall_view.SetNull();
     }
     else
     {
@@ -682,9 +682,9 @@ void S6Exporter::ExportRide(rct2_ride* dst, const Ride* src)
 
     for (int32_t i = 0; i < RCT12_MAX_STATIONS_PER_RIDE; i++)
     {
-        if (src->stations[i].Start.isNull())
+        if (src->stations[i].Start.IsNull())
         {
-            dst->station_starts[i].setNull();
+            dst->station_starts[i].SetNull();
         }
         else
         {
@@ -697,14 +697,14 @@ void S6Exporter::ExportRide(rct2_ride* dst, const Ride* src)
         dst->train_at_station[i] = src->stations[i].TrainAtStation;
 
         TileCoordsXYZD entrance = ride_get_entrance_location(src, i);
-        if (entrance.isNull())
-            dst->entrances[i].setNull();
+        if (entrance.IsNull())
+            dst->entrances[i].SetNull();
         else
             dst->entrances[i] = { static_cast<uint8_t>(entrance.x), static_cast<uint8_t>(entrance.y) };
 
         TileCoordsXYZD exit = ride_get_exit_location(src, i);
-        if (exit.isNull())
-            dst->exits[i].setNull();
+        if (exit.IsNull())
+            dst->exits[i].SetNull();
         else
             dst->exits[i] = { static_cast<uint8_t>(exit.x), static_cast<uint8_t>(exit.y) };
 
@@ -760,9 +760,9 @@ void S6Exporter::ExportRide(rct2_ride* dst, const Ride* src)
     // pad_106[0x2];
     dst->testing_flags = src->testing_flags;
 
-    if (src->CurTestTrackLocation.isNull())
+    if (src->CurTestTrackLocation.IsNull())
     {
-        dst->cur_test_track_location.setNull();
+        dst->cur_test_track_location.SetNull();
     }
     else
     {
@@ -1230,9 +1230,9 @@ template<> void S6Exporter::ExportEntity(RCT2SpriteVehicle* dst, const Vehicle*
     dst->track_progress = src->track_progress;
     if (ride != nullptr && ride->mode == RideMode::BoatHire && src->status == Vehicle::Status::TravellingBoat)
     {
-        if (src->BoatLocation.isNull())
+        if (src->BoatLocation.IsNull())
         {
-            dst->boat_location.setNull();
+            dst->boat_location.SetNull();
         }
         else
         {
@@ -1473,7 +1473,7 @@ void S6Exporter::ExportEntityPeep(RCT2SpritePeep* dst, const Peep* src)
     dst->id = src->Id;
     dst->path_check_optimisation = src->PathCheckOptimisation;
     dst->peep_flags = src->PeepFlags;
-    if (src->PathfindGoal.isNull())
+    if (src->PathfindGoal.IsNull())
     {
         dst->pathfind_goal = { 0xFF, 0xFF, 0xFF, INVALID_DIRECTION };
     }
@@ -1484,7 +1484,7 @@ void S6Exporter::ExportEntityPeep(RCT2SpritePeep* dst, const Peep* src)
     }
     for (size_t i = 0; i < std::size(src->PathfindHistory); i++)
     {
-        if (src->PathfindHistory[i].isNull())
+        if (src->PathfindHistory[i].IsNull())
         {
             dst->pathfind_history[i] = { 0xFF, 0xFF, 0xFF, INVALID_DIRECTION };
         }
diff --git a/src/openrct2/rct2/S6Importer.cpp b/src/openrct2/rct2/S6Importer.cpp
index 3a7d792448..5510056d77 100644
--- a/src/openrct2/rct2/S6Importer.cpp
+++ b/src/openrct2/rct2/S6Importer.cpp
@@ -582,9 +582,9 @@ public:
             dst->default_name_number = src->name_arguments_number;
         }
 
-        if (src->overall_view.isNull())
+        if (src->overall_view.IsNull())
         {
-            dst->overall_view.setNull();
+            dst->overall_view.SetNull();
         }
         else
         {
@@ -594,9 +594,9 @@ public:
 
         for (int32_t i = 0; i < RCT12_MAX_STATIONS_PER_RIDE; i++)
         {
-            if (src->station_starts[i].isNull())
+            if (src->station_starts[i].IsNull())
             {
-                dst->stations[i].Start.setNull();
+                dst->stations[i].Start.SetNull();
             }
             else
             {
@@ -609,12 +609,12 @@ public:
             dst->stations[i].TrainAtStation = src->train_at_station[i];
             // Direction is fixed later.
 
-            if (src->entrances[i].isNull())
+            if (src->entrances[i].IsNull())
                 ride_clear_entrance_location(dst, i);
             else
                 ride_set_entrance_location(dst, i, { src->entrances[i].x, src->entrances[i].y, src->station_heights[i], 0 });
 
-            if (src->exits[i].isNull())
+            if (src->exits[i].IsNull())
                 ride_clear_exit_location(dst, i);
             else
                 ride_set_exit_location(dst, i, { src->exits[i].x, src->exits[i].y, src->station_heights[i], 0 });
@@ -631,7 +631,7 @@ public:
         // All other values take 0 as their default. Since they're already memset to that, no need to do it again.
         for (int32_t i = RCT12_MAX_STATIONS_PER_RIDE; i < MAX_STATIONS; i++)
         {
-            dst->stations[i].Start.setNull();
+            dst->stations[i].Start.SetNull();
             dst->stations[i].TrainAtStation = RideStation::NO_TRAIN;
             ride_clear_entrance_location(dst, i);
             ride_clear_exit_location(dst, i);
@@ -683,9 +683,9 @@ public:
         // pad_106[0x2];
         dst->testing_flags = src->testing_flags;
 
-        if (src->cur_test_track_location.isNull())
+        if (src->cur_test_track_location.IsNull())
         {
-            dst->CurTestTrackLocation.setNull();
+            dst->CurTestTrackLocation.SetNull();
         }
         else
         {
@@ -1445,7 +1445,7 @@ public:
         dst->PeepFlags = src->peep_flags;
         if (isNullLocation(src->pathfind_goal))
         {
-            dst->PathfindGoal.setNull();
+            dst->PathfindGoal.SetNull();
             dst->PathfindGoal.direction = INVALID_DIRECTION;
         }
         else
@@ -1457,7 +1457,7 @@ public:
         {
             if (isNullLocation(src->pathfind_history[i]))
             {
-                dst->PathfindHistory[i].setNull();
+                dst->PathfindHistory[i].SetNull();
                 dst->PathfindHistory[i].direction = INVALID_DIRECTION;
             }
             else
@@ -1602,10 +1602,10 @@ template<> void S6Importer::ImportEntity<Vehicle>(const RCT12SpriteBase& baseSrc
     dst->colours = src->colours;
     dst->track_progress = src->track_progress;
     dst->TrackLocation = { src->track_x, src->track_y, src->track_z };
-    if (src->boat_location.isNull() || static_cast<RideMode>(ride.mode) != RideMode::BoatHire
+    if (src->boat_location.IsNull() || static_cast<RideMode>(ride.mode) != RideMode::BoatHire
         || src->status != static_cast<uint8_t>(Vehicle::Status::TravellingBoat))
     {
-        dst->BoatLocation.setNull();
+        dst->BoatLocation.SetNull();
         dst->SetTrackDirection(src->GetTrackDirection());
         dst->SetTrackType(src->GetTrackType());
         // RotationControlToggle and Booster are saved as the same track piece ID
diff --git a/src/openrct2/ride/CableLift.cpp b/src/openrct2/ride/CableLift.cpp
index 92d9bc43a2..a42310440b 100644
--- a/src/openrct2/ride/CableLift.cpp
+++ b/src/openrct2/ride/CableLift.cpp
@@ -77,7 +77,7 @@ Vehicle* cable_lift_segment_create(
     current->SetState(Vehicle::Status::MovingToEndOfStation, 0);
     current->num_peeps = 0;
     current->next_free_seat = 0;
-    current->BoatLocation.setNull();
+    current->BoatLocation.SetNull();
     current->IsCrashedVehicle = false;
     return current;
 }
diff --git a/src/openrct2/ride/Ride.cpp b/src/openrct2/ride/Ride.cpp
index 62dee8b349..833a6c3250 100644
--- a/src/openrct2/ride/Ride.cpp
+++ b/src/openrct2/ride/Ride.cpp
@@ -251,7 +251,7 @@ int32_t Ride::GetTotalQueueLength() const
 {
     int32_t i, queueLength = 0;
     for (i = 0; i < MAX_STATIONS; i++)
-        if (!ride_get_entrance_location(this, i).isNull())
+        if (!ride_get_entrance_location(this, i).IsNull())
             queueLength += stations[i].QueueLength;
     return queueLength;
 }
@@ -260,7 +260,7 @@ int32_t Ride::GetMaxQueueTime() const
 {
     uint8_t i, queueTime = 0;
     for (i = 0; i < MAX_STATIONS; i++)
-        if (!ride_get_entrance_location(this, i).isNull())
+        if (!ride_get_entrance_location(this, i).IsNull())
             queueTime = std::max(queueTime, stations[i].QueueTime);
     return static_cast<int32_t>(queueTime);
 }
@@ -1166,7 +1166,7 @@ void Ride::UpdateSpiralSlide()
     // Invalidate something related to station start
     for (int32_t i = 0; i < MAX_STATIONS; i++)
     {
-        if (stations[i].Start.isNull())
+        if (stations[i].Start.IsNull())
             continue;
 
         auto startLoc = stations[i].Start;
@@ -1647,10 +1647,10 @@ Staff* ride_find_closest_mechanic(Ride* ride, int32_t forInspection)
     // Get either exit position or entrance position if there is no exit
     auto stationIndex = ride->inspection_station;
     TileCoordsXYZD location = ride_get_exit_location(ride, stationIndex);
-    if (location.isNull())
+    if (location.IsNull())
     {
         location = ride_get_entrance_location(ride, stationIndex);
-        if (location.isNull())
+        if (location.IsNull())
             return nullptr;
     }
 
@@ -2155,7 +2155,7 @@ void ride_check_all_reachable()
  */
 static bool ride_entrance_exit_is_reachable(const TileCoordsXYZD& coordinates)
 {
-    if (coordinates.isNull())
+    if (coordinates.IsNull())
         return true;
 
     TileCoordsXYZ loc{ coordinates.x, coordinates.y, coordinates.z };
@@ -2172,9 +2172,9 @@ static void ride_entrance_exit_connected(Ride* ride)
         auto entrance = ride_get_entrance_location(ride, i);
         auto exit = ride_get_exit_location(ride, i);
 
-        if (station_start.isNull())
+        if (station_start.IsNull())
             continue;
-        if (!entrance.isNull() && !ride_entrance_exit_is_reachable(entrance))
+        if (!entrance.IsNull() && !ride_entrance_exit_is_reachable(entrance))
         {
             // name of ride is parameter of the format string
             Formatter ft;
@@ -2186,7 +2186,7 @@ static void ride_entrance_exit_connected(Ride* ride)
             ride->connected_message_throttle = 3;
         }
 
-        if (!exit.isNull() && !ride_entrance_exit_is_reachable(exit))
+        if (!exit.IsNull() && !ride_entrance_exit_is_reachable(exit))
         {
             // name of ride is parameter of the format string
             Formatter ft;
@@ -2203,7 +2203,7 @@ static void ride_entrance_exit_connected(Ride* ride)
 static void ride_shop_connected(Ride* ride)
 {
     auto shopLoc = TileCoordsXY(ride->stations[0].Start);
-    if (shopLoc.isNull())
+    if (shopLoc.IsNull())
         return;
 
     TrackElement* trackElement = nullptr;
@@ -2312,7 +2312,7 @@ static void ride_station_set_map_tooltip(TileElement* tileElement)
     {
         auto stationIndex = tileElement->AsTrack()->GetStationIndex();
         for (int32_t i = stationIndex; i >= 0; i--)
-            if (ride->stations[i].Start.isNull())
+            if (ride->stations[i].Start.IsNull())
                 stationIndex--;
 
         auto ft = Formatter();
@@ -2337,14 +2337,14 @@ static void ride_entrance_set_map_tooltip(TileElement* tileElement)
         // Get the station
         auto stationIndex = tileElement->AsEntrance()->GetStationIndex();
         for (int32_t i = stationIndex; i >= 0; i--)
-            if (ride->stations[i].Start.isNull())
+            if (ride->stations[i].Start.IsNull())
                 stationIndex--;
 
         if (tileElement->AsEntrance()->GetEntranceType() == ENTRANCE_TYPE_RIDE_ENTRANCE)
         {
             // Get the queue length
             int32_t queueLength = 0;
-            if (!ride_get_entrance_location(ride, stationIndex).isNull())
+            if (!ride_get_entrance_location(ride, stationIndex).IsNull())
                 queueLength = ride->stations[stationIndex].QueueLength;
 
             auto ft = Formatter();
@@ -2378,7 +2378,7 @@ static void ride_entrance_set_map_tooltip(TileElement* tileElement)
             // Get the station
             stationIndex = tileElement->AsEntrance()->GetStationIndex();
             for (int32_t i = stationIndex; i >= 0; i--)
-                if (ride->stations[i].Start.isNull())
+                if (ride->stations[i].Start.IsNull())
                     stationIndex--;
 
             auto ft = Formatter();
@@ -2430,7 +2430,7 @@ static StationIndex ride_mode_check_valid_station_numbers(Ride* ride)
     uint16_t numStations = 0;
     for (StationIndex stationIndex = 0; stationIndex < MAX_STATIONS; ++stationIndex)
     {
-        if (!ride->stations[stationIndex].Start.isNull())
+        if (!ride->stations[stationIndex].Start.IsNull())
         {
             numStations++;
         }
@@ -2510,22 +2510,22 @@ static int32_t ride_check_for_entrance_exit(ride_id_t rideIndex)
     uint8_t exit = 0;
     for (int32_t i = 0; i < MAX_STATIONS; i++)
     {
-        if (ride->stations[i].Start.isNull())
+        if (ride->stations[i].Start.IsNull())
             continue;
 
-        if (!ride_get_entrance_location(ride, i).isNull())
+        if (!ride_get_entrance_location(ride, i).IsNull())
         {
             entrance = 1;
         }
 
-        if (!ride_get_exit_location(ride, i).isNull())
+        if (!ride_get_exit_location(ride, i).IsNull())
         {
             exit = 1;
         }
 
         // If station start and no entrance/exit
         // Sets same error message as no entrance
-        if (ride_get_exit_location(ride, i).isNull() && ride_get_entrance_location(ride, i).isNull())
+        if (ride_get_exit_location(ride, i).IsNull() && ride_get_entrance_location(ride, i).IsNull())
         {
             entrance = 0;
             break;
@@ -2556,7 +2556,7 @@ void Ride::ChainQueues() const
     for (int32_t i = 0; i < MAX_STATIONS; i++)
     {
         auto location = ride_get_entrance_location(this, i);
-        if (location.isNull())
+        if (location.IsNull())
             continue;
 
         auto mapLocation = location.ToCoordsXYZ();
@@ -2892,19 +2892,19 @@ static void ride_set_maze_entrance_exit_points(Ride* ride)
         const auto entrance = ride_get_entrance_location(ride, i);
         const auto exit = ride_get_exit_location(ride, i);
 
-        if (!entrance.isNull())
+        if (!entrance.IsNull())
         {
             *position++ = entrance;
         }
-        if (!exit.isNull())
+        if (!exit.IsNull())
         {
             *position++ = exit;
         }
     }
-    (*position++).setNull();
+    (*position++).SetNull();
 
     // Enumerate entrance and exit positions
-    for (position = positions; !(*position).isNull(); position++)
+    for (position = positions; !(*position).IsNull(); position++)
     {
         auto entranceExitMapPos = position->ToCoordsXYZ();
 
@@ -3211,7 +3211,7 @@ static Vehicle* vehicle_create_car(
     // loc_6DDD5E:
     vehicle->num_peeps = 0;
     vehicle->next_free_seat = 0;
-    vehicle->BoatLocation.setNull();
+    vehicle->BoatLocation.SetNull();
     vehicle->IsCrashedVehicle = false;
     return vehicle;
 }
@@ -3525,7 +3525,7 @@ static bool ride_initialise_cable_lift_track(Ride* ride, bool isApplying)
     for (StationIndex stationIndex = 0; stationIndex < MAX_STATIONS; stationIndex++)
     {
         location = ride->stations[stationIndex].GetStart();
-        if (!location.isNull())
+        if (!location.IsNull())
             break;
         if (stationIndex == (MAX_STATIONS - 1))
         {
@@ -3709,16 +3709,16 @@ void Ride::ConstructMissingEntranceOrExit() const
     int32_t i;
     for (i = 0; i < MAX_STATIONS; i++)
     {
-        if (stations[i].Start.isNull())
+        if (stations[i].Start.IsNull())
             continue;
 
-        if (ride_get_entrance_location(this, i).isNull())
+        if (ride_get_entrance_location(this, i).IsNull())
         {
             entranceOrExit = WC_RIDE_CONSTRUCTION__WIDX_ENTRANCE;
             break;
         }
 
-        if (ride_get_exit_location(this, i).isNull())
+        if (ride_get_exit_location(this, i).IsNull())
         {
             entranceOrExit = WC_RIDE_CONSTRUCTION__WIDX_EXIT;
             break;
@@ -4848,7 +4848,7 @@ static std::optional<int32_t> ride_get_smallest_station_length(Ride* ride)
     std::optional<int32_t> result;
     for (const auto& station : ride->stations)
     {
-        if (!station.Start.isNull())
+        if (!station.Start.IsNull())
         {
             if (!result.has_value() || station.Length < *result)
             {
@@ -4873,7 +4873,7 @@ static int32_t ride_get_track_length(Ride* ride)
     for (int32_t i = 0; i < MAX_STATIONS && !foundTrack; i++)
     {
         trackStart = ride->stations[i].GetStart();
-        if (trackStart.isNull())
+        if (trackStart.IsNull())
             continue;
 
         tileElement = map_get_first_element_at(trackStart);
@@ -5334,7 +5334,7 @@ bool ride_has_adjacent_station(Ride* ride)
     for (StationIndex stationNum = 0; stationNum < MAX_STATIONS; stationNum++)
     {
         auto stationStart = ride->stations[stationNum].GetStart();
-        if (!stationStart.isNull())
+        if (!stationStart.IsNull())
         {
             /* Get the map element for the station start. */
             TileElement* stationElement = get_station_platform({ stationStart, stationStart.z + 0 });
@@ -5509,7 +5509,7 @@ void determine_ride_entrance_and_exit_locations()
             bool fixExit = false;
 
             // Skip if the station has no entrance
-            if (!entranceLoc.isNull())
+            if (!entranceLoc.IsNull())
             {
                 const EntranceElement* entranceElement = map_get_ride_entrance_element_at(entranceLoc.ToCoordsXYZD(), false);
 
@@ -5524,7 +5524,7 @@ void determine_ride_entrance_and_exit_locations()
                 }
             }
 
-            if (!exitLoc.isNull())
+            if (!exitLoc.IsNull())
             {
                 const EntranceElement* entranceElement = map_get_ride_exit_element_at(exitLoc.ToCoordsXYZD(), false);
 
diff --git a/src/openrct2/ride/RideConstruction.cpp b/src/openrct2/ride/RideConstruction.cpp
index bc3f30dc8e..d0e06c9a88 100644
--- a/src/openrct2/ride/RideConstruction.cpp
+++ b/src/openrct2/ride/RideConstruction.cpp
@@ -258,7 +258,7 @@ void ride_remove_peeps(Ride* ride)
     if (stationIndex != STATION_INDEX_NULL)
     {
         auto location = ride_get_exit_location(ride, stationIndex).ToCoordsXYZD();
-        if (!location.isNull())
+        if (!location.IsNull())
         {
             auto direction = direction_reverse(location.direction);
             exitPosition = location;
@@ -1274,7 +1274,7 @@ CoordsXYZD ride_get_entrance_or_exit_position_from_screen_position(const ScreenC
     auto ride = get_ride(gRideEntranceExitPlaceRideIndex);
     if (ride == nullptr)
     {
-        entranceExitCoords.setNull();
+        entranceExitCoords.SetNull();
         return entranceExitCoords;
     }
 
@@ -1283,7 +1283,7 @@ CoordsXYZD ride_get_entrance_or_exit_position_from_screen_position(const ScreenC
     auto coordsAtHeight = screen_get_map_xy_with_z(screenCoords, stationBaseZ);
     if (!coordsAtHeight)
     {
-        entranceExitCoords.setNull();
+        entranceExitCoords.SetNull();
         return entranceExitCoords;
     }
 
@@ -1291,14 +1291,14 @@ CoordsXYZD ride_get_entrance_or_exit_position_from_screen_position(const ScreenC
 
     if (ride->type == RIDE_TYPE_NULL)
     {
-        entranceExitCoords.setNull();
+        entranceExitCoords.SetNull();
         return entranceExitCoords;
     }
 
     auto stationStart = ride->stations[gRideEntranceExitPlaceStationIndex].Start;
-    if (stationStart.isNull())
+    if (stationStart.IsNull())
     {
-        entranceExitCoords.setNull();
+        entranceExitCoords.SetNull();
         return entranceExitCoords;
     }
 
@@ -1377,7 +1377,7 @@ CoordsXYZD ride_get_entrance_or_exit_position_from_screen_position(const ScreenC
         auto tileElement = ride_get_station_start_track_element(ride, gRideEntranceExitPlaceStationIndex);
         if (tileElement == nullptr)
         {
-            entranceExitCoords.setNull();
+            entranceExitCoords.SetNull();
             return entranceExitCoords;
         }
         auto stationDirection = tileElement->GetDirection();
@@ -1443,7 +1443,7 @@ void Ride::ValidateStations()
         // find the stations of the ride to begin stepping over track elements from
         for (StationIndex stationId = 0; stationId < MAX_STATIONS; ++stationId)
         {
-            if (stations[stationId].Start.isNull())
+            if (stations[stationId].Start.IsNull())
                 continue;
 
             CoordsXYZ location = stations[stationId].GetStart();
@@ -1550,14 +1550,14 @@ void Ride::ValidateStations()
     for (StationIndex stationId = 0; stationId < MAX_STATIONS; ++stationId)
     {
         auto entrance = ride_get_entrance_location(this, stationId);
-        if (!entrance.isNull())
+        if (!entrance.IsNull())
         {
             locations.push_back(entrance);
             ride_clear_entrance_location(this, stationId);
         }
 
         auto exit = ride_get_exit_location(this, stationId);
-        if (!exit.isNull())
+        if (!exit.IsNull())
         {
             locations.push_back(exit);
             ride_clear_exit_location(this, stationId);
@@ -1645,7 +1645,7 @@ void Ride::ValidateStations()
                 if (tileElement->AsEntrance()->GetEntranceType() == ENTRANCE_TYPE_RIDE_EXIT)
                 {
                     // if the location is already set for this station, big problem!
-                    if (!ride_get_exit_location(this, stationId).isNull())
+                    if (!ride_get_exit_location(this, stationId).IsNull())
                         break;
                     // set the station's exit location to this one
                     CoordsXYZD loc = { location, stations[stationId].GetBaseZ(), tileElement->GetDirection() };
@@ -1654,7 +1654,7 @@ void Ride::ValidateStations()
                 else
                 {
                     // if the location is already set for this station, big problem!
-                    if (!ride_get_entrance_location(this, stationId).isNull())
+                    if (!ride_get_entrance_location(this, stationId).IsNull())
                         break;
                     // set the station's entrance location to this one
                     CoordsXYZD loc = { location, stations[stationId].GetBaseZ(), tileElement->GetDirection() };
@@ -1738,16 +1738,16 @@ bool ride_are_all_possible_entrances_and_exits_built(Ride* ride)
 
     for (int32_t i = 0; i < MAX_STATIONS; i++)
     {
-        if (ride->stations[i].Start.isNull())
+        if (ride->stations[i].Start.IsNull())
         {
             continue;
         }
-        if (ride_get_entrance_location(ride, i).isNull())
+        if (ride_get_entrance_location(ride, i).IsNull())
         {
             gGameCommandErrorText = STR_ENTRANCE_NOT_YET_BUILT;
             return false;
         }
-        if (ride_get_exit_location(ride, i).isNull())
+        if (ride_get_exit_location(ride, i).IsNull())
         {
             gGameCommandErrorText = STR_EXIT_NOT_YET_BUILT;
             return false;
diff --git a/src/openrct2/ride/RideRatings.cpp b/src/openrct2/ride/RideRatings.cpp
index 308a2f6528..515e710c43 100644
--- a/src/openrct2/ride/RideRatings.cpp
+++ b/src/openrct2/ride/RideRatings.cpp
@@ -237,7 +237,7 @@ static void ride_ratings_update_state_2(RideRatingUpdateState& state)
             {
                 int32_t entranceIndex = tileElement->AsTrack()->GetStationIndex();
                 state.StationFlags &= ~RIDE_RATING_STATION_FLAG_NO_ENTRANCE;
-                if (ride_get_entrance_location(ride, entranceIndex).isNull())
+                if (ride_get_entrance_location(ride, entranceIndex).IsNull())
                 {
                     state.StationFlags |= RIDE_RATING_STATION_FLAG_NO_ENTRANCE;
                 }
@@ -386,10 +386,10 @@ static void ride_ratings_begin_proximity_loop(RideRatingUpdateState& state)
 
     for (int32_t i = 0; i < MAX_STATIONS; i++)
     {
-        if (!ride->stations[i].Start.isNull())
+        if (!ride->stations[i].Start.IsNull())
         {
             state.StationFlags &= ~RIDE_RATING_STATION_FLAG_NO_ENTRANCE;
-            if (ride_get_entrance_location(ride, i).isNull())
+            if (ride_get_entrance_location(ride, i).IsNull())
             {
                 state.StationFlags |= RIDE_RATING_STATION_FLAG_NO_ENTRANCE;
             }
diff --git a/src/openrct2/ride/Station.cpp b/src/openrct2/ride/Station.cpp
index f62414cb19..ec38c94a0e 100644
--- a/src/openrct2/ride/Station.cpp
+++ b/src/openrct2/ride/Station.cpp
@@ -29,7 +29,7 @@ static void ride_invalidate_station_start(Ride* ride, StationIndex stationIndex,
  */
 void ride_update_station(Ride* ride, StationIndex stationIndex)
 {
-    if (ride->stations[stationIndex].Start.isNull())
+    if (ride->stations[stationIndex].Start.IsNull())
         return;
 
     switch (ride->mode)
@@ -367,7 +367,7 @@ StationIndex ride_get_first_valid_station_exit(Ride* ride)
 {
     for (StationIndex i = 0; i < MAX_STATIONS; i++)
     {
-        if (!ride->stations[i].Exit.isNull())
+        if (!ride->stations[i].Exit.IsNull())
         {
             return i;
         }
@@ -379,7 +379,7 @@ StationIndex ride_get_first_valid_station_start(const Ride* ride)
 {
     for (StationIndex i = 0; i < MAX_STATIONS; i++)
     {
-        if (!ride->stations[i].Start.isNull())
+        if (!ride->stations[i].Start.IsNull())
         {
             return i;
         }
@@ -391,7 +391,7 @@ StationIndex ride_get_first_empty_station_start(const Ride* ride)
 {
     for (StationIndex i = 0; i < MAX_STATIONS; i++)
     {
-        if (ride->stations[i].Start.isNull())
+        if (ride->stations[i].Start.IsNull())
         {
             return i;
         }
@@ -411,12 +411,12 @@ TileCoordsXYZD ride_get_exit_location(const Ride* ride, const StationIndex stati
 
 void ride_clear_entrance_location(Ride* ride, const StationIndex stationIndex)
 {
-    ride->stations[stationIndex].Entrance.setNull();
+    ride->stations[stationIndex].Entrance.SetNull();
 }
 
 void ride_clear_exit_location(Ride* ride, const StationIndex stationIndex)
 {
-    ride->stations[stationIndex].Exit.setNull();
+    ride->stations[stationIndex].Exit.SetNull();
 }
 
 void ride_set_entrance_location(Ride* ride, const StationIndex stationIndex, const TileCoordsXYZD& location)
diff --git a/src/openrct2/ride/Track.cpp b/src/openrct2/ride/Track.cpp
index 0c5aaf3a05..e27ee73ed0 100644
--- a/src/openrct2/ride/Track.cpp
+++ b/src/openrct2/ride/Track.cpp
@@ -100,7 +100,7 @@ static void ride_remove_station(Ride* ride, const CoordsXYZ& location)
         auto stationStart = ride->stations[i].GetStart();
         if (stationStart == location)
         {
-            ride->stations[i].Start.setNull();
+            ride->stations[i].Start.SetNull();
             ride->num_stations--;
             break;
         }
diff --git a/src/openrct2/ride/TrackDesign.cpp b/src/openrct2/ride/TrackDesign.cpp
index 33bf8c9732..a8d3f0aa67 100644
--- a/src/openrct2/ride/TrackDesign.cpp
+++ b/src/openrct2/ride/TrackDesign.cpp
@@ -265,7 +265,7 @@ rct_string_id TrackDesign::CreateTrackDesignTrack(const Ride& ride)
                 location = ride_get_exit_location(&ride, station_index);
             }
 
-            if (location.isNull())
+            if (location.IsNull())
             {
                 continue;
             }
@@ -379,7 +379,7 @@ rct_string_id TrackDesign::CreateTrackDesignMaze(const Ride& ride)
     }
 
     auto location = ride_get_entrance_location(&ride, 0);
-    if (location.isNull())
+    if (location.IsNull())
     {
         return STR_TRACK_TOO_LARGE_OR_TOO_MUCH_SCENERY;
     }
@@ -408,7 +408,7 @@ rct_string_id TrackDesign::CreateTrackDesignMaze(const Ride& ride)
     maze_elements.push_back(mazeEntrance);
 
     location = ride_get_exit_location(&ride, 0);
-    if (location.isNull())
+    if (location.IsNull())
     {
         return STR_TRACK_TOO_LARGE_OR_TOO_MUCH_SCENERY;
     }
diff --git a/src/openrct2/ride/Vehicle.cpp b/src/openrct2/ride/Vehicle.cpp
index 369f6121a0..659d40b00c 100644
--- a/src/openrct2/ride/Vehicle.cpp
+++ b/src/openrct2/ride/Vehicle.cpp
@@ -1607,7 +1607,7 @@ void Vehicle::UpdateMeasurements()
     if (curRide->current_test_station == STATION_INDEX_NULL)
         return;
 
-    if (!ride_get_entrance_location(curRide, curRide->current_test_station).isNull())
+    if (!ride_get_entrance_location(curRide, curRide->current_test_station).IsNull())
     {
         uint8_t test_segment = curRide->current_test_segment;
 
@@ -1666,7 +1666,7 @@ void Vehicle::UpdateMeasurements()
     {
         curRide->CurTestTrackLocation = curTrackLoc;
 
-        if (ride_get_entrance_location(curRide, curRide->current_test_station).isNull())
+        if (ride_get_entrance_location(curRide, curRide->current_test_station).IsNull())
             return;
 
         auto trackElemType = GetTrackType();
@@ -1882,7 +1882,7 @@ void Vehicle::UpdateMeasurements()
         }
     }
 
-    if (ride_get_entrance_location(curRide, curRide->current_test_station).isNull())
+    if (ride_get_entrance_location(curRide, curRide->current_test_station).IsNull())
         return;
 
     if (x == LOCATION_NULL)
@@ -2332,7 +2332,7 @@ void Vehicle::UpdateWaitingForPassengers()
         if (!OpenRestraints())
             return;
 
-        if (ride_get_entrance_location(curRide, current_station).isNull())
+        if (ride_get_entrance_location(curRide, current_station).IsNull())
         {
             curRide->stations[current_station].TrainAtStation = RideStation::NO_TRAIN;
             sub_state = 2;
@@ -2568,7 +2568,7 @@ void Vehicle::UpdateWaitingToDepart()
             }
             else
             {
-                if (!ride_get_exit_location(curRide, current_station).isNull())
+                if (!ride_get_exit_location(curRide, current_station).IsNull())
                 {
                     SetState(Vehicle::Status::UnloadingPassengers);
                     return;
@@ -2582,7 +2582,7 @@ void Vehicle::UpdateWaitingToDepart()
             {
                 if (trainCar->num_peeps != 0)
                 {
-                    if (!ride_get_exit_location(curRide, current_station).isNull())
+                    if (!ride_get_exit_location(curRide, current_station).IsNull())
                     {
                         SetState(Vehicle::Status::UnloadingPassengers);
                         return;
@@ -3144,7 +3144,7 @@ static void test_reset(Ride& ride, StationIndex curStation)
     ride.previous_vertical_g = 0;
     ride.previous_lateral_g = 0;
     ride.testing_flags = 0;
-    ride.CurTestTrackLocation.setNull();
+    ride.CurTestTrackLocation.SetNull();
     ride.turn_count_default = 0;
     ride.turn_count_banked = 0;
     ride.turn_count_sloped = 0;
@@ -4200,7 +4200,7 @@ void Vehicle::UpdateUnloadingPassengers()
     }
     else
     {
-        if (ride_get_exit_location(curRide, current_station).isNull())
+        if (ride_get_exit_location(curRide, current_station).IsNull())
         {
             if (sub_state != 1)
                 return;
@@ -4388,7 +4388,7 @@ void Vehicle::TryReconnectBoatToTrack(const CoordsXY& currentBoatLocation, const
         {
             SetTrackType(trackElement->GetTrackType());
             SetTrackDirection(curRide->boat_hire_return_direction);
-            BoatLocation.setNull();
+            BoatLocation.SetNull();
         }
 
         track_progress = 0;
diff --git a/src/openrct2/scripting/Duktape.hpp b/src/openrct2/scripting/Duktape.hpp
index de51173220..a168c2bb5c 100644
--- a/src/openrct2/scripting/Duktape.hpp
+++ b/src/openrct2/scripting/Duktape.hpp
@@ -341,7 +341,7 @@ namespace OpenRCT2::Scripting
 
     template<> inline DukValue ToDuk(duk_context* ctx, const CoordsXYZ& value)
     {
-        if (value.isNull())
+        if (value.IsNull())
         {
             return ToDuk(ctx, nullptr);
         }
@@ -366,14 +366,14 @@ namespace OpenRCT2::Scripting
         }
         else
         {
-            result.setNull();
+            result.SetNull();
         }
         return result;
     }
 
     template<> inline DukValue ToDuk(duk_context* ctx, const CoordsXYZD& value)
     {
-        if (value.isNull())
+        if (value.IsNull())
         {
             return ToDuk(ctx, nullptr);
         }
@@ -408,7 +408,7 @@ namespace OpenRCT2::Scripting
         }
         else
         {
-            result.setNull();
+            result.SetNull();
         }
         return result;
     }
diff --git a/src/openrct2/scripting/ScriptEngine.cpp b/src/openrct2/scripting/ScriptEngine.cpp
index caf284513b..4b127d5a69 100644
--- a/src/openrct2/scripting/ScriptEngine.cpp
+++ b/src/openrct2/scripting/ScriptEngine.cpp
@@ -878,7 +878,7 @@ DukValue ScriptEngine::GameActionResultToDuk(const GameAction& action, const std
     {
         obj.Set("cost", result->Cost);
     }
-    if (!result->Position.isNull())
+    if (!result->Position.IsNull())
     {
         obj.Set("position", ToDuk(_context, result->Position));
     }
diff --git a/src/openrct2/world/Banner.cpp b/src/openrct2/world/Banner.cpp
index 1d276df688..10d704a732 100644
--- a/src/openrct2/world/Banner.cpp
+++ b/src/openrct2/world/Banner.cpp
@@ -221,7 +221,7 @@ ride_id_t banner_get_closest_ride_index(const CoordsXYZ& mapPos)
             continue;
 
         auto rideCoords = ride.overall_view;
-        if (rideCoords.isNull())
+        if (rideCoords.IsNull())
             continue;
 
         int32_t distance = abs(mapPos.x - rideCoords.x) + abs(mapPos.y - rideCoords.y);
diff --git a/src/openrct2/world/Footpath.cpp b/src/openrct2/world/Footpath.cpp
index a1452df224..c691b7d521 100644
--- a/src/openrct2/world/Footpath.cpp
+++ b/src/openrct2/world/Footpath.cpp
@@ -246,7 +246,7 @@ CoordsXY footpath_get_coordinates_from_pos(const ScreenCoordsXY& screenCoords, i
     if (window == nullptr || window->viewport == nullptr)
     {
         CoordsXY position{};
-        position.setNull();
+        position.SetNull();
         return position;
     }
     auto viewport = window->viewport;
@@ -259,7 +259,7 @@ CoordsXY footpath_get_coordinates_from_pos(const ScreenCoordsXY& screenCoords, i
         if (info.SpriteType == ViewportInteractionItem::None)
         {
             auto position = info.Loc;
-            position.setNull();
+            position.SetNull();
             return position;
         }
     }
@@ -344,7 +344,7 @@ CoordsXY footpath_bridge_get_info_from_pos(const ScreenCoordsXY& screenCoords, i
     if (window == nullptr || window->viewport == nullptr)
     {
         CoordsXY ret{};
-        ret.setNull();
+        ret.SetNull();
         return ret;
     }
     auto viewport = window->viewport;
@@ -1221,7 +1221,7 @@ void footpath_update_queue_chains()
         for (int32_t i = 0; i < MAX_STATIONS; i++)
         {
             TileCoordsXYZD location = ride_get_entrance_location(ride, i);
-            if (location.isNull())
+            if (location.IsNull())
                 continue;
 
             TileElement* tileElement = map_get_first_element_at(location.ToCoordsXY());
diff --git a/src/openrct2/world/Location.hpp b/src/openrct2/world/Location.hpp
index c9f90a921b..55855570fc 100644
--- a/src/openrct2/world/Location.hpp
+++ b/src/openrct2/world/Location.hpp
@@ -215,12 +215,12 @@ struct CoordsXY
         return { floor2(x, COORDS_XY_STEP), floor2(y, COORDS_XY_STEP) };
     }
 
-    constexpr bool isNull() const
+    constexpr bool IsNull() const
     {
         return x == COORDS_NULL;
     };
 
-    constexpr void setNull()
+    constexpr void SetNull()
     {
         x = COORDS_NULL;
         y = 0;
@@ -269,9 +269,9 @@ struct CoordsXYZ : public CoordsXY
         return ToTileStart() + CoordsXYZ{ COORDS_XY_HALF_TILE, COORDS_XY_HALF_TILE, 0 };
     }
 
-    constexpr void setNull()
+    constexpr void SetNull()
     {
-        CoordsXY::setNull();
+        CoordsXY::SetNull();
         z = 0;
     }
 };
@@ -343,10 +343,10 @@ struct TileCoordsXY
 
     constexpr CoordsXY ToCoordsXY() const
     {
-        if (isNull())
+        if (IsNull())
         {
             CoordsXY ret{};
-            ret.setNull();
+            ret.SetNull();
             return ret;
         }
 
@@ -390,12 +390,12 @@ struct TileCoordsXY
         return !(*this == other);
     }
 
-    constexpr bool isNull() const
+    constexpr bool IsNull() const
     {
         return x == COORDS_NULL;
     };
 
-    constexpr void setNull()
+    constexpr void SetNull()
     {
         x = COORDS_NULL;
         y = 0;
@@ -457,18 +457,18 @@ struct TileCoordsXYZ : public TileCoordsXY
 
     constexpr CoordsXYZ ToCoordsXYZ() const
     {
-        if (isNull())
+        if (IsNull())
         {
             CoordsXYZ ret{};
-            ret.setNull();
+            ret.SetNull();
             return ret;
         }
         return { x * COORDS_XY_STEP, y * COORDS_XY_STEP, z * COORDS_Z_STEP };
     }
 
-    constexpr void setNull()
+    constexpr void SetNull()
     {
-        TileCoordsXY::setNull();
+        TileCoordsXY::SetNull();
         z = 0;
     }
 };
@@ -667,18 +667,18 @@ struct TileCoordsXYZD : public TileCoordsXYZ
 
     constexpr CoordsXYZD ToCoordsXYZD() const
     {
-        if (isNull())
+        if (IsNull())
         {
             CoordsXYZD ret{};
-            ret.setNull();
+            ret.SetNull();
             return ret;
         }
         return { x * COORDS_XY_STEP, y * COORDS_XY_STEP, z * COORDS_Z_STEP, direction };
     }
 
-    constexpr void setNull()
+    constexpr void SetNull()
     {
-        TileCoordsXYZ::setNull();
+        TileCoordsXYZ::SetNull();
         direction = INVALID_DIRECTION;
     }
 };
diff --git a/src/openrct2/world/MoneyEffect.cpp b/src/openrct2/world/MoneyEffect.cpp
index e001459036..90aed63694 100644
--- a/src/openrct2/world/MoneyEffect.cpp
+++ b/src/openrct2/world/MoneyEffect.cpp
@@ -66,7 +66,7 @@ void MoneyEffect::CreateAt(money64 value, const CoordsXYZ& effectPos, bool verti
 void MoneyEffect::Create(money64 value, const CoordsXYZ& loc)
 {
     auto offsetLoc = loc;
-    if (loc.isNull())
+    if (loc.IsNull())
     {
         // If game actions return no valid location of the action we can not use the screen
         // coordinates as every client will have different ones.