implement blueprints

src/ui/GameWorldView.h

@@ -11,6 +11,7 @@
 #include <QTimer>
 #include <QVector2D>
 
+#include "Blueprint.h"
 #include "SchematicDropEvent.h"
 #include "BuildingType.h"
 #include "EntityId.h"
@@ -46,6 +47,7 @@ signals:
     void stateUpdated(Tick tick, int blocks, double speed);
     void gameOver();
     void builderModeExited();
+    void blueprintModeExited();
     void escapeMenuRequested();
     void demolishModeChanged(bool active);
 
@@ -55,6 +57,8 @@ public:
 public slots:
     void enterBuilderMode(BuildingType type);
     void exitBuilderMode();
+    void enterBlueprintMode(Blueprint blueprint);
+    void exitBlueprintMode();
     void toggleDemolishMode();
     void setGameSpeed(double multiplier);
     void resetForNewGame();
@@ -101,6 +105,8 @@ private:
     void     drawPortGlyph(QPainter& painter, QPoint bodyTile,
                            Rotation direction, const QColor& color);
 
+    void     placeBlueprintAtTile(QPoint center);
+
     std::optional<QVector2D> entityPosition(EntityId id) const;
     void                     stepSpeed(int delta);
     void                     placeAtTile(QPoint tile);
@@ -145,6 +151,9 @@ private:
     std::set<QPoint, QPointCompare>      m_beltDragTiles;
     bool                                 m_dragging;
 
+    std::optional<Blueprint> m_blueprintMode;
+    QPoint                   m_blueprintGhostTile;
+
     bool     m_demolishMode;
     EntityId m_demolishHoverId;