void HandleMovementDown(int stepNumber)
{
if (!m_state.door.IsClosed)
{
m_state.door.IsClosed = true;
return;
}
int nextHeight = m_state.height - m_elevator.distancePerStep;
int minHeight = building.minFloor * building.heightPerFloor;
if (m_action.terminalHeight < minHeight)
{
m_action.terminalHeight = minHeight;
}
if (nextHeight <= m_action.terminalHeight)
{
m_action = new ElevatorAction(ElevatorAction.Opening,
m_action.terminalHeight);
m_state.height = m_action.terminalHeight;
m_state.movement = ElevatorMovement.Stopped();
return;
}
int nextFloor = 0;
if (WillElevatorPassFloor(m_state.height,
m_state.movement,
m_elevator.distancePerStep,
building.heightPerFloor,
nextFloor))
{
foreach (ElevatorRequest request in m_openRequests)
{
if ((request.floorNumber == nextFloor) &&
(request.requestedInsideElevator ||
request.direction))
{
nextHeight = nextFloor * building.heightPerFloor;
m_action = new ElevatorAction(
ElevatorAction.Opening,
nextHeight);
m_state.height = nextHeight;
m_state.movement = ElevatorMovement.Stopped();
return;
}
}
}
m_state.height = nextHeight;
}
public ElevatorDriver(ElevatorConfiguration _elevator,
BuildingConfiguration _building)
{
m_elevator = _elevator;
building = _building;
m_state = new ElevatorState(
0,
DoorState.Open(),
ElevatorMovement.Stopped(),
ElevatorMovement.Stopped());
m_action = new ElevatorAction(ElevatorAction.Opening, 0);
m_stepAction = new StepAction("ElevatorDriver Action",
(stepNumber) =>
proceedToNextState(stepNumber));
}
// The
void proceedToNextState(int stepNumber)
{
try
{
System.Diagnostics.Debug.WriteLine("Elevator: "
+ m_elevator.name
+ " At height: "
+ m_state.height.ToString()
+ " action: "
+ m_action.actionName);
if (m_action.actionName == ElevatorAction.Opening)
{
m_state.door = DoorState.Open();
int floorNumber = m_state.height / building.heightPerFloor;
m_goals.RemoveAll((request) =>
request.floorNumber == floorNumber);
m_action.duration -= 1;
if (m_action.duration <= 0)
{
m_action = new ElevatorAction(ElevatorAction.Stopped, 2);
}
return;
}
if (m_action.actionName == ElevatorAction.Stopping)
{
ElevatorState nextState = m_state;
nextState.movement = ElevatorMovement.Stopped();
nextState.height = m_action.terminalHeight;
m_state = nextState;
m_action = new ElevatorAction(ElevatorAction.Opening,
m_state.height);
return;
}
if (m_action.actionName == ElevatorAction.Move_Up)
{
HandleMovementUp(stepNumber);
return;
}
if (m_action.actionName == ElevatorAction.Move_Down)
{
HandleMovementUp(stepNumber);
return;
}
//Fallback: Act as if the elevator is stopped.
ElevatorRequest toExecute = getNextGoal();
if (toExecute != null)
{
int targetHeight = toExecute.floorNumber * building.heightPerFloor;
if (targetHeight == m_state.height)
{
m_action = new ElevatorAction(ElevatorAction.Opening, targetHeight);
}
else if (targetHeight > m_state.height)
{
m_action = new ElevatorAction(ElevatorAction.Move_Up,
targetHeight);
}
else
{
m_action = new ElevatorAction(ElevatorAction.Move_Down,
targetHeight);
}
}
}
catch (Exception exc)
{
System.Diagnostics.Debug.WriteLine(exc.ToString());
}
}