implement ship modules

src/ui/ShipLayoutDialog.h

@@ -0,0 +1,70 @@
+#pragma once
+
+#include <optional>
+#include <string>
+#include <vector>
+
+#include <QDialog>
+#include <QPoint>
+
+#include "GameConfig.h"
+#include "Rotation.h"
+#include "ShipLayout.h"
+
+class QPushButton;
+
+class ShipLayoutDialog : public QDialog
+{
+    Q_OBJECT
+
+public:
+    ShipLayoutDialog(const GameConfig* config,
+                     const std::string& shipId,
+                     const ShipLayoutConfig& currentLayout,
+                     QWidget* parent = nullptr);
+
+    std::optional<ShipLayoutConfig> result() const;
+
+protected:
+    void keyPressEvent(QKeyEvent* event) override;
+
+signals:
+    void gridCellClicked(QPoint cell);
+
+private slots:
+    void onModuleButtonClicked(int index);
+    void onConfirm();
+    void onCancel();
+
+public:
+    struct CellInfo
+    {
+        bool buildable;
+        int moduleIndex; // -1 if empty
+    };
+
+private:
+
+    void rebuildOccupancy();
+    void updateGridWidget();
+    bool canPlaceModule(const ModuleDef& def, QPoint position, Rotation rotation) const;
+    std::vector<std::string> rotatedMask(const ModuleDef& def, Rotation rotation) const;
+
+    const GameConfig* m_config;
+    std::string m_shipId;
+    std::vector<std::string> m_shipLayout;
+    int m_rows;
+    int m_cols;
+
+    std::vector<PlacedModule> m_placedModules;
+    std::vector<std::vector<CellInfo>> m_grid;
+
+    int m_activeModuleIndex; // -1 = remove mode, -2 = no selection
+    Rotation m_currentRotation;
+
+    std::vector<QPushButton*> m_moduleButtons;
+    QPushButton* m_removeButton;
+    QWidget* m_gridWidget;
+
+    std::optional<ShipLayoutConfig> m_result;
+};