Fix #7002: Always invalidate virtual floor regardless of selection.

src/openrct2/ride/Ride.cpp

@@ -1653,6 +1653,10 @@ void ride_select_next_section()
             window_ride_construction_update_active_elements();
             return;
         }
+
+        // Invalidate previous track piece (we may not be changing height!)
+        map_invalidate_virtual_floor_tiles();
+
         CoordsXYE inputElement, outputElement;
         inputElement.x = x;
         inputElement.y = y;
@@ -1663,9 +1667,6 @@ void ride_select_next_section()
             tileElement = outputElement.element;
             if (!scenery_tool_is_active())
             {
-                // Invalidate previous track piece (we may not be changing height!)
-                map_invalidate_virtual_floor_tiles();
-
                 // Set next element's height.
                 map_set_virtual_floor_height(tileElement->base_height << 3);
             }
@@ -1717,6 +1718,10 @@ void ride_select_previous_section()
             window_ride_construction_update_active_elements();
             return;
         }
+
+        // Invalidate previous track piece (we may not be changing height!)
+        map_invalidate_virtual_floor_tiles();
+
         track_begin_end trackBeginEnd;
         if (track_block_get_previous(x, y, tileElement, &trackBeginEnd)) {
             _currentTrackBeginX = trackBeginEnd.begin_x;
@@ -1728,9 +1733,6 @@ void ride_select_previous_section()
             _rideConstructionArrowPulseTime = 0;
             if (!scenery_tool_is_active())
             {
-                // Invalidate previous track piece (we may not be changing height!)
-                map_invalidate_virtual_floor_tiles();
-
                 // Set previous element's height.
                 map_set_virtual_floor_height(trackBeginEnd.begin_element->base_height << 3);
             }

src/openrct2/world/Footpath.cpp

@@ -746,11 +746,11 @@ money32 footpath_provisional_set(sint32 type, sint32 x, sint32 y, sint32 z, sint
         }
     }
 
+    // Invalidate previous footpath piece.
+    map_invalidate_virtual_floor_tiles();
+
     if (!scenery_tool_is_active())
     {
-        // Invalidate previous footpath piece.
-        map_invalidate_virtual_floor_tiles();
-
         if (cost == MONEY32_UNDEFINED)
         {
             // If we can't build this, don't show a virtual floor.

src/openrct2/world/Map.cpp

@@ -3264,7 +3264,7 @@ sint32 map_can_construct_with_clear_at(sint32 x, sint32 y, sint32 zLow, sint32 z
     sint32 al, ah, bh, cl, ch, water_height;
     al = ah = bh = cl = ch = water_height = 0;
     uint8 slope = 0;
-    
+
     gMapGroundFlags = ELEMENT_IS_ABOVE_GROUND;
     bool canBuildCrossing = false;
     if (x >= gMapSizeUnits || y >= gMapSizeUnits || x < 32 || y < 32) {
@@ -4819,11 +4819,6 @@ void map_invalidate_virtual_floor_tiles()
         }
     }
 
-    // Do not invalidate if we're between ticks.
-    if (min_position.x == std::numeric_limits<sint16>::max()    || min_position.y == std::numeric_limits<sint16>::max() ||
-        max_position.x == std::numeric_limits<sint16>::lowest() || max_position.y == std::numeric_limits<sint16>::lowest())
-        return;
-
     // Apply the virtual floor size to the computed invalidation area.
     min_position.x  -= gMapVirtualFloorBaseSize + 1;
     min_position.y  -= gMapVirtualFloorBaseSize + 1;