move the placement rules and the config-dependent queries off BuildingSystem

src/lib/sim/BuildingSystem.h

@@ -16,6 +16,7 @@
 #include "BeltSystem.h"
 #include "Building.h"
 #include "FactoryState.h"
+#include "PlacementRules.h"
 #include "ProductionRules.h"
 #include "BuildingType.h"
 #include "BuildingId.h"
@@ -60,8 +61,6 @@ public:
     // other body (A) cell sits on the asteroid (x < 0 and x >= the left edge),
     // and every cell has 0 <= y < world.height_tiles. There is no right-side
     // bound — space extends rightward. Tile occupancy is NOT checked here.
-    bool isPlacementValid(BuildingType type, QPoint anchor,
-                          Rotation rotation) const;
 
     // Sets the current buildable asteroid width in tiles. Grows the left
     // placement bound as the player unlocks asteroid expansions (REQ-EXP-UNLOCK).
@@ -99,7 +98,6 @@ public:
     // output directions (derived from its surface mask) and stored filters, or
     // nullopt if the id is not a Splitter site. The stored filters are applied
     // to BeltSystem when the splitter finishes building (tickConstruction).
-    std::optional<BeltSystem::SplitterInfo> getSiteSplitterInfo(BuildingId id) const;
     void setSiteSplitterFilters(BuildingId id,
                                 const std::vector<ItemType>& filterA,
                                 const std::vector<ItemType>& filterB);
@@ -145,13 +143,6 @@ public:
     void forEachIncomingItem(
         const std::function<void(const ItemType&, QPointF)>& visit) const;
 
-    // Returns the entity id of the building or construction site whose footprint
-    // exactly coincides with the ghost (type, anchor, rot) and is of the same
-    // building type.  Returns nullopt otherwise.
-    std::optional<BuildingId> findRotateInPlaceTarget(BuildingType type,
-                                                     QPoint anchor,
-                                                     Rotation rot) const;
-
     // Rotate an existing building or construction site to newRotation in place.
     // For belt-type operational buildings, re-registers with BeltSystem (items
     // currently on the tile are discarded by BeltSystem::removeTile).
@@ -162,7 +153,6 @@ public:
     // (REQ-BLD-BELT-DRAG, REQ-MAT-INPUT-PORTS): each returned Port.tile is the
     // outside adjacent tile and Port.direction is the belt facing that points into
     // the target. Output-port edges are excluded. Empty for an unknown id.
-    std::vector<Port> getInputPorts(BuildingId id) const;
 
     // Register / unregister tile occupancy for ECS station entities.
     void registerTileOccupancy(const std::vector<QPoint>& cells, BuildingId ownerPlaceholder);
@@ -238,14 +228,8 @@ private:
     void                initAutoBuffers(Building& b) const;
     void                initShipyardBuffers(Building& b) const;
     void                initSalvageBayBuffer(Building& b) const;
-    std::vector<Port>   computeInputPorts(const Building& b) const;
     // Core input-edge scan shared by operational buildings and construction sites.
-    std::vector<Port>   computeInputPorts(const std::vector<QPoint>& bodyCells,
-                                          const std::vector<Port>& outputPorts) const;
     std::vector<Item>   rollReprocessingOutput(const RecipeDef& recipe);
-    bool                bodyCellsWithinWorldBounds(
-                            const std::vector<QPoint>& bodyCells,
-                            QPoint anchor) const;
 
     const GameConfig&                              m_config;