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Datei: Environment.vdmpp Sprache: VDM

Original von: VDM^©

-----------------------------------------------
-- Class: Environment
-- Description: Environment class in the VeMo project
-----------------------------------------------

--
-- class definition
--
class Environment

instance variables

public city : City;
private io : IO := new IO();
private inlines : seq of inline := [];
private outlines : seq of char := [];
private busy : bool := true;
private simulating : bool := false;

private passengersTransported : nat := 0;
private passengersAnnoyed : nat := 0;
private passengersCount : nat :=0;
private passengersAnnoyedStops :  map Waypoint`WaypointsEnum to nat := {|->};

types
inline  = Types`Event;
InputTP   = seq of inline;

operations

public Environment: seq of char ==> Environment
Environment(filename) ==
(
  city := new City();

  def mk_(-,input) = io.freadval[InputTP](filename) in
  (
   inlines := input;
  );

  --BuildCityMap();
);

private BuildCityMap : () ==> ()
BuildCityMap() ==
(
  dcl a : Busstop, b : Busstop, c : Busstop, d : Busstop, e : Busstop, f :Busstop;
  dcl wp1 : Waypoint, wp2 : Waypoint, wp3 : Waypoint, wp4 : Waypoint;

  a := city.addBusstop(<A>);
  b := city.addBusstop(<B>);
  c := city.addBusstop(<C>);
  d := city.addBusstop(<D>);
  e := city.addBusstop(<E>);
  f := city.addBusstop(<F>);

  wp1 := city.addWaypoint(<WP1>);
  wp2 := city.addWaypoint(<WP2>);
  wp3 := city.addWaypoint(<WP3>);
  wp4 := city.addWaypoint(<WP4>);

  city.addRoad(a, b, <R1>, 40);
  city.addRoad(b, wp1, <R2>, 80);
  city.addRoad(b, wp2, <R3>, 50);
  city.addRoad(a, wp2, <R4>, 90);
  city.addRoad(wp2, c, <R5>, 60);
  city.addRoad(c, d, <R6>, 40);
  city.addRoad(c, f, <R7>, 60);
  city.addRoad(f, city.getCentralStation(), <R8>, 100);
  city.addRoad(city.getCentralStation(), wp3, <R9>, 50);
  city.addRoad(wp3, wp4, <R10>, 30);
  city.addRoad(d, wp4, <R11>, 40);
  city.addRoad(wp3, e, <R12>, 40);
  city.addRoad(e, wp1, <R13>, 40);
  city.addRoad(wp1, d, <R14>, 30);
  city.addRoad(f, wp4, <R15>, 20);
  city.addRoad(wp1, wp3, <R16>, 40);
  city.addRoad(a, city.getCentralStation(), <HW1>, 310, Config`DefaultRoadSpeedLimit + 10);
);

public Events: () ==> ()
Events() ==
(
    if inlines <> []
    then
    (
     dcl done : bool := false,
     eventOccurred : bool := false,
     curtime : Types`Time := World`timerRef.GetTime();

  while not done do
  (
      def event = hd inlines in
   cases event:
    mk_Types`BusRoute(-,-,-) ->
    (
     if event.t <= curtime
     then
     (
         Printer`OutWithTS("Environment: Bus route "
                ^ Printer`natToString(event.ID));

      let b = city.addBus(event.ID, event.route) in
      (
       Printer`Out("Waypoints:");
       let wps = b.GetWaypoints() in
        let wpsIds = [wp.GetId() | wp in seq wps] in
         IO`print(wpsIds);

       Printer`Out("\nStops:");

       let wps = b.GetStops() in
        let wpsIds = [wp.GetId() | wp in seq wps] in
         IO`print(wpsIds);
       Printer`Out("\n");

       if simulating then
       (
        start(b);
       );

      );

          eventOccurred := true;
     )
       ),
       mk_Types`Inflow(-,-) ->
       (
        if event.t <= curtime
     then
     (
      SetInflow(event.flow);

          eventOccurred := true;
         )
       ),
       mk_Types`Simulate(-) ->
       (
        if event.t <= curtime
     then
     (
      if not simulating then
      (
       Printer`OutWithTS("Environment: "
               ^ "Simulation started");
       simulating := true;
       start(city);
       city.WaitForThreadStart();
       for all bus in set city.getBuses() do
       (
        start(bus);
        bus.WaitForThreadStart();
       );

      );
      eventOccurred := true;
     )
       ),
       mk_Types`WasteTime(-) ->
       (
        if event.t <= curtime
     then
     (
      Printer`OutWithTS("Environment: Wasting time");
         eventOccurred := true;
        )
       ),
       others -> Printer`OutWithTS("Environment: No match found")
   end;

   if eventOccurred then
     (
      inlines := tl inlines;
      done := len inlines = 0;
     )
     else
    done := true;

   eventOccurred := false;
      );
    )
       else busy := false;
);

public handleEvent : seq of char ==> ()
handleEvent(s) ==
(
    Printer`OutWithTS("#Environment handled System Event: " ^ s);
    outlines := outlines ^ Printer`natToString(World`timerRef.GetTime()) ^ ": " ^ s ^ "\n";
);

private SetInflow : nat  ==> ()
SetInflow(flow)==
(
  Printer`OutWithTS("Environment: "
    ^ "Inflow changed to " ^ Printer`natToString(flow));

  city.setInflow(flow);
);

public IncreaseInflow : () ==> ()
IncreaseInflow() ==
(
  Printer`Out("Increase");
  let flow = city.getInflow() in
  (
   if(flow < Config`MaxInflow) then
    SetInflow(flow +1);
  )
);

public DecreaseInflow : () ==> ()
DecreaseInflow() ==
(
  let flow = city.getInflow() in
  (
   if(flow > 0) then
    SetInflow(flow -1);
  )
);

public TransportedPassengers : nat ==> ()
TransportedPassengers(number)==
  passengersTransported := passengersTransported + number;

public AnnoyedPassenger : nat * Waypoint`WaypointsEnum ==> ()
AnnoyedPassenger(number, goal)==
(
  passengersAnnoyed := passengersAnnoyed + number;

  if(goal not in set dom passengersAnnoyedStops) then
  (
   passengersAnnoyedStops := passengersAnnoyedStops ++ {goal |-> number};
  )
  else
   passengersAnnoyedStops := passengersAnnoyedStops ++ {goal |-> passengersAnnoyedStops(goal) + number};
);

public PassengerCount : () ==> ()
PassengerCount()==
  passengersCount := passengersCount + 1;

public report : () ==> ()
report() ==
(
  Printer`Out("\n\nHowever beautiful the strategy," ^
        " you should occasionally look at the results.");
    Printer`Out("**************RESULT**************");
    Printer`Out("**********************************");
    --Printer`Out(outlines);
    Printer`Out(" " ^ VDMUtil`val2seq_of_char[nat](passengersCount) ^ "\t passengers in total. (transported and at central)");
  Printer`Out(" " ^ VDMUtil`val2seq_of_char[nat](passengersTransported) ^ "\t passengers transported.");
  Printer`Out(" " ^ VDMUtil`val2seq_of_char[nat](passengersAnnoyed) ^ "\t passengers got annoyed.");


  for all waypoint in set dom passengersAnnoyedStops do
  (
   Printer`Out("\t" ^ VDMUtil`val2seq_of_char[Waypoint`WaypointsEnum](waypoint) ^ " : " ^ VDMUtil`val2seq_of_char[nat](passengersAnnoyedStops(waypoint)));

  );
    Printer`Out("\n**********************************");
  Printer`Out("**********************************");
);

public isFinished : () ==> ()
   isFinished() == skip;

   public goEnvironment : () ==> ()
goEnvironment() == skip;

public run : () ==> ()
run() ==
(
  start(new ClockTick());
     Events();
  World`graphics.move();
);

public step : () ==> ()
step() ==
(
     Events();
  World`timerRef.NotifyAndIncTime();
  World`timerRef.Awake();
  if(busy) then
  (
   World`graphics.move();
   World`graphics.sleep();
  )
  else
  (
   report();
  )
);

sync
per isFinished => not busy;
mutex(handleEvent)

end Environment

¤ Dauer der Verarbeitung: 0.16 Sekunden (vorverarbeitet) ¤

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