add tracing for performance profiling

src/lib/sim/BuildingSystem.cpp

@@ -6,6 +6,7 @@
 #include <set>
 
 #include "SurfaceMask.h"
+#include "tracing.h"
 
 BuildingSystem::BuildingSystem(const GameConfig& config,
                                BeltSystem& belts,
@@ -410,6 +411,7 @@ void BuildingSystem::setShipLayout(BuildingId id, const ShipLayoutConfig& layout
 
 void BuildingSystem::tickConstruction(Tick currentTick)
 {
+	TRACE();
     if (m_constructionQueue.empty())
     {
         return;
@@ -516,6 +518,7 @@ void BuildingSystem::tickConstruction(Tick currentTick)
 
 void BuildingSystem::tickBeltPull()
 {
+	TRACE();
     for (Building& building : m_buildings)
     {
         // HQ: pull building_block items and add to global stock.
@@ -591,6 +594,7 @@ void BuildingSystem::tickBeltPull()
 
 void BuildingSystem::tickProduction(Tick currentTick)
 {
+	TRACE();
     for (Building& building : m_buildings)
     {
         // Skip types without a recipe-based production loop.
@@ -694,6 +698,7 @@ void BuildingSystem::tickProduction(Tick currentTick)
 
 void BuildingSystem::tickShipyardProduction(Tick currentTick)
 {
+	TRACE();
     for (Building& building : m_buildings)
     {
         if (building.type != BuildingType::Shipyard)
@@ -795,6 +800,7 @@ void BuildingSystem::tickShipyardProduction(Tick currentTick)
 
 void BuildingSystem::tickBeltPush()
 {
+	TRACE();
     for (Building& building : m_buildings)
     {
         if (building.outputBuffer.items.empty())