#include "DetectorConstruction.h"

#include "G4Box.hh"
#include "G4LogicalVolume.hh"
#include "G4NistManager.hh"
#include "G4PVPlacement.hh"
#include "G4SystemOfUnits.hh"

DetectorConstruction::DetectorConstruction() {}

DetectorConstruction::~DetectorConstruction() {}

G4VPhysicalVolume* DetectorConstruction::Construct() {
    G4NistManager* nist = G4NistManager::Instance();

    G4Box* solid_world = new G4Box("world", 638 / 2 * mm, 630 / 2 * mm, 555. / 2 * mm);
    G4LogicalVolume* logic_world = new G4LogicalVolume(solid_world, nist->FindOrBuildMaterial("G4_WATER"), "world");
    G4VPhysicalVolume* physics_world =
        new G4PVPlacement(0, G4ThreeVector(0, 0, 0), logic_world, "world", 0, false, 0, true);

    fScoringVolume = logic_world;

    return physics_world;
}