depend on factory data instead of BuildingSystem in the AI path

src/lib/sim/FactoryQueries.cpp

@@ -0,0 +1,122 @@
+#include "FactoryQueries.h"
+
+#include <limits>
+
+#include "Item.h"
+#include "ItemType.h"
+
+const Building* findBuilding(const FactoryState& state, BuildingId id)
+{
+    for (const Building& building : state.buildings)
+    {
+        if (building.id == id)
+        {
+            return &building;
+        }
+    }
+    return nullptr;
+}
+
+Building* findBuilding(FactoryState& state, BuildingId id)
+{
+    for (Building& building : state.buildings)
+    {
+        if (building.id == id)
+        {
+            return &building;
+        }
+    }
+    return nullptr;
+}
+
+const ConstructionSite* findSite(const FactoryState& state, BuildingId id)
+{
+    for (const ConstructionSite& site : state.constructionQueue)
+    {
+        if (site.id == id)
+        {
+            return &site;
+        }
+    }
+    return nullptr;
+}
+
+std::vector<Building> getAllBuildings(const FactoryState& state)
+{
+    return state.buildings;
+}
+
+std::vector<ConstructionSite> getAllSites(const FactoryState& state)
+{
+    return std::vector<ConstructionSite>(state.constructionQueue.begin(),
+                                         state.constructionQueue.end());
+}
+
+int getProductionBuildingCount(const FactoryState& state)
+{
+    int count = 0;
+    for (const Building& b : state.buildings)
+    {
+        if (isProductionBuildingType(b.type)) { ++count; }
+    }
+    return count;
+}
+
+int getActiveProductionBuildingCount(const FactoryState& state)
+{
+    int count = 0;
+    for (const Building& b : state.buildings)
+    {
+        if (isProductionBuildingType(b.type) && b.production.has_value()) { ++count; }
+    }
+    return count;
+}
+
+bool isTileOccupied(const FactoryState& state, QPoint tile)
+{
+    return state.grid.isOccupied(tile);
+}
+
+const Building* findNearestBuilding(const FactoryState& state, QVector2D worldPos,
+                                    BuildingType type)
+{
+    const Building* best = nullptr;
+    float bestDist = std::numeric_limits<float>::max();
+    for (const Building& b : state.buildings)
+    {
+        if (b.type != type)
+        {
+            continue;
+        }
+        QVector2D center(b.anchor.x() + b.footprint.width()  / 2.0f,
+                         b.anchor.y() + b.footprint.height() / 2.0f);
+        float dist = (center - worldPos).length();
+        if (dist < bestDist)
+        {
+            bestDist = dist;
+            best = &b;
+        }
+    }
+    return best;
+}
+
+bool deliverScrapToSalvageBay(FactoryState& state, BuildingId bayId)
+{
+    Building* bay = findBuilding(state, bayId);
+    if (!bay || bay->type != BuildingType::SalvageBay)
+    {
+        return false;
+    }
+    if (bay->queuedForDeconstruction)
+    {
+        return false;  // queued for deconstruction: stopped operating (REQ-BLD-DECON-QUEUE)
+    }
+    // Emerging scrap still counts against the bay's holding capacity
+    // (REQ-MAT-OUTPUT-EMERGE).
+    if (bay->getOutputItemCount() >= bay->outputBuffer.capacity)
+    {
+        return false;
+    }
+    bay->outputBuffer.items.push_back(Item{ItemType{"scrap"}});
+    return true;
+}