MSRailSignalControl.h

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/****************************************************************************/
// Eclipse SUMO, Simulation of Urban MObility; see https://eclipse.dev/sumo
// Copyright (C) 2002-2024 German Aerospace Center (DLR) and others.
// This program and the accompanying materials are made available under the
// terms of the Eclipse Public License 2.0 which is available at
// https://www.eclipse.org/legal/epl-2.0/
// This Source Code may also be made available under the following Secondary
// Licenses when the conditions for such availability set forth in the Eclipse
// Public License 2.0 are satisfied: GNU General Public License, version 2
// or later which is available at
// https://www.gnu.org/licenses/old-licenses/gpl-2.0-standalone.html
// SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-or-later
/****************************************************************************/
// Centralized services for rail signal control (Singleton)
// - monitors track usage for long-range deadlock prevention
/****************************************************************************/
#pragma once
#include <config.h>
#include <microsim/MSNet.h>
 
// ===========================================================================
// class declarations
// ===========================================================================
class MSRailSignal;
class MSEdge;
 
// ===========================================================================
// class definitions
// ===========================================================================
class MSRailSignalControl : public MSNet::VehicleStateListener {
public:
    ~MSRailSignalControl();
 
    static MSRailSignalControl& getInstance();
 
    static bool hasInstance() {
        return myInstance != nullptr;
    }
 
    static void cleanup();
 
    static void clearState();
 
    void vehicleStateChanged(const SUMOVehicle* const vehicle, MSNet::VehicleState to, const std::string& info = "");
 
    void registerProtectedDriveway(MSRailSignal* rs, int driveWayID, const MSEdge* protectedBidi);
 
    const std::set<const MSEdge*>& getUsedEdges() const {
        return myUsedEdges;
    }
 
    void addSignal(MSRailSignal* signal);
 
    const std::vector<MSRailSignal*>& getSignals() const {
        return mySignals;
    }
 
    void addGreenFlankSwitch(MSLink* link, int dwID) {
        mySwitchedGreenFlanks.emplace_back(link, dwID);
    }
 
    void recheckGreen();
 
private:
    MSRailSignalControl();
 
    void updateDriveways(const MSEdge* used);
 
    std::set<const MSEdge*> myUsedEdges;
 
    std::map<const MSEdge*, std::vector<std::pair<MSRailSignal*, int> > > myProtectedDriveways;
 
    std::vector<MSRailSignal*> mySignals;
 
    std::vector<std::pair<MSLink*, int> > mySwitchedGreenFlanks;
    std::map<std::pair<int, int>, bool> myDriveWayCompatibility;
 
    static MSRailSignalControl* myInstance;
 
 
};