Do not update viewport signs when running headlessly

src/saveload/afterload.cpp

@@ -236,6 +236,7 @@ static inline RailType UpdateRailType(RailType rt, RailType min)
  */
 void UpdateAllVirtCoords()
 {
+	if (IsHeadless()) return;
 	UpdateAllStationVirtCoords();
 	UpdateAllSignVirtCoords();
 	UpdateAllTownVirtCoords();

src/signs.cpp

@@ -15,6 +15,7 @@
 #include "strings_func.h"
 #include "core/pool_func.hpp"
 #include "viewport_kdtree.h"
+#include "network/network.h"
 
 #include "table/strings.h"
 
@@ -45,6 +46,7 @@ Sign::~Sign()
  */
 void Sign::UpdateVirtCoord()
 {
+	if (IsHeadless()) return;
 	Point pt = RemapCoords(this->x, this->y, this->z);
 
 	if (_viewport_sign_kdtree_valid && this->sign.kdtree_valid) _viewport_sign_kdtree.Remove(ViewportSignKdtreeItem::MakeSign(this->index));

src/station_cmd.cpp

@@ -508,6 +508,7 @@ void Station::UpdateCargoHistory()
  */
 void Station::UpdateVirtCoord()
 {
+	if (IsHeadless()) return;
 	Point pt = RemapCoords2(TileX(this->xy) * TILE_SIZE, TileY(this->xy) * TILE_SIZE);
 
 	pt.y -= 32 * ZOOM_LVL_BASE;
@@ -546,6 +547,7 @@ void Station::MoveSign(TileIndex new_xy)
 /** Update the virtual coords needed to draw the station sign for all stations. */
 void UpdateAllStationVirtCoords()
 {
+	if (IsHeadless()) return;
 	for (BaseStation *st : BaseStation::Iterate()) {
 		st->UpdateVirtCoord();
 	}

src/town_cmd.cpp

@@ -533,6 +533,7 @@ static bool IsCloseToTown(TileIndex tile, uint dist)
 /** Resize the sign (label) of the town after it changes population. */
 void Town::UpdateVirtCoord()
 {
+	if (IsHeadless()) return;
 	this->UpdateLabel();
 	Point pt = RemapCoords2(TileX(this->xy) * TILE_SIZE, TileY(this->xy) * TILE_SIZE);
 
@@ -550,6 +551,7 @@ void Town::UpdateVirtCoord()
 /** Update the virtual coords needed to draw the town sign for all towns. */
 void UpdateAllTownVirtCoords()
 {
+	if (IsHeadless()) return;
 	for (Town *t : Town::Iterate()) {
 		t->UpdateVirtCoord();
 	}

src/viewport.cpp

@@ -5037,7 +5037,7 @@ void RebuildViewportKdtree()
 	/* Reset biggest size sign seen */
 	_viewport_sign_maxwidth = 0;
 
-	if (_network_dedicated) {
+	if (IsHeadless()) {
 		_viewport_sign_kdtree_valid = false;
 		_viewport_sign_kdtree.Build<ViewportSignKdtreeItem*>(nullptr, nullptr);
 		return;

src/waypoint_cmd.cpp

@@ -40,6 +40,7 @@
  */
 void Waypoint::UpdateVirtCoord()
 {
+	if (IsHeadless()) return;
 	Point pt = RemapCoords2(TileX(this->xy) * TILE_SIZE, TileY(this->xy) * TILE_SIZE);
 	if (_viewport_sign_kdtree_valid && this->sign.kdtree_valid) _viewport_sign_kdtree.Remove(ViewportSignKdtreeItem::MakeWaypoint(this->index));