public override bool Equals(object obj)
{
if (obj != null && GetType() == obj.GetType())
{
AgentPosition other = (AgentPosition)obj;
return((getX() == other.getX()) && (getY() == other.getY()) &&
(orientation == other.getOrientation()));
}
return(false);
}
public ICollection <AgentPosition> getLocationsLinkedTo(AgentPosition fromLocation)
{
int x = fromLocation.getX();
int y = fromLocation.getY();
AgentPosition.Orientation orientation = fromLocation.getOrientation();
ICollection <AgentPosition> result = CollectionFactory.CreateQueue <AgentPosition>();
AgentPosition currentForwardNorth = new AgentPosition(x, y + 1,
AgentPosition.Orientation.FACING_NORTH);
AgentPosition currentForwardSouth = new AgentPosition(x, y - 1,
AgentPosition.Orientation.FACING_SOUTH);
AgentPosition currentForwardEast = new AgentPosition(x + 1, y,
AgentPosition.Orientation.FACING_EAST);
AgentPosition currentForwardWest = new AgentPosition(x - 1, y,
AgentPosition.Orientation.FACING_WEST);
AgentPosition currentNorth = new AgentPosition(x, y,
AgentPosition.Orientation.FACING_NORTH);
AgentPosition currentSouth = new AgentPosition(x, y,
AgentPosition.Orientation.FACING_SOUTH);
AgentPosition currentEast = new AgentPosition(x, y,
AgentPosition.Orientation.FACING_EAST);
AgentPosition currentWest = new AgentPosition(x, y,
AgentPosition.Orientation.FACING_WEST);
if (orientation.Equals(AgentPosition.Orientation.FACING_NORTH))
{
addIfAllowed(currentForwardNorth, result);
addIfAllowed(currentEast, result);
addIfAllowed(currentWest, result);
}
else if (orientation.Equals(AgentPosition.Orientation.FACING_SOUTH))
{
addIfAllowed(currentForwardSouth, result);
addIfAllowed(currentEast, result);
addIfAllowed(currentWest, result);
}
else if (orientation.Equals(AgentPosition.Orientation.FACING_EAST))
{
addIfAllowed(currentNorth, result);
addIfAllowed(currentSouth, result);
addIfAllowed(currentForwardEast, result);
}
else if (orientation.Equals(AgentPosition.Orientation.FACING_WEST))
{
addIfAllowed(currentNorth, result);
addIfAllowed(currentSouth, result);
addIfAllowed(currentForwardWest, result);
}
return(result);
}
/**
*
* @param current
* the agent's current position
* @param possibleWumpus
* a set of squares where we don't know that there isn't the
* wumpus.
* @param allowed
* a set of squares that can form part of the route
*
* @return the sequence of actions to reach the nearest square that is in
* line with a possible wumpus position. The last action is a shot.
*/
public ICollection <IAction> planShot(AgentPosition current, ISet <Room> possibleWumpus, ISet <Room> allowed)
{
ISet <AgentPosition> shootingPositions = CollectionFactory.CreateSet <AgentPosition>();
foreach (Room p in possibleWumpus)
{
int x = p.getX();
int y = p.getY();
for (int i = 1; i <= kb.getCaveXDimension(); i++)
{
if (i < x)
{
shootingPositions.Add(new AgentPosition(i, y, AgentPosition.Orientation.FACING_EAST));
}
if (i > x)
{
shootingPositions.Add(new AgentPosition(i, y, AgentPosition.Orientation.FACING_WEST));
}
if (i < y)
{
shootingPositions.Add(new AgentPosition(x, i, AgentPosition.Orientation.FACING_NORTH));
}
if (i > y)
{
shootingPositions.Add(new AgentPosition(x, i, AgentPosition.Orientation.FACING_SOUTH));
}
}
}
// Can't have a shooting position from any of the rooms the wumpus could
// reside
foreach (Room p in possibleWumpus)
{
foreach (AgentPosition.Orientation orientation in AgentPosition.Orientation.values())
{
shootingPositions.Remove(new AgentPosition(p.getX(), p.getY(), orientation));
}
}
ISet <Room> shootingPositionsArray = CollectionFactory.CreateSet <Room>();
foreach (AgentPosition tmp in shootingPositions)
{
shootingPositionsArray.Add(new Room(tmp.getX(), tmp.getY()));
}
ICollection <IAction> actions = planRoute(current, shootingPositionsArray, allowed);
AgentPosition newPos = current;
if (actions.Size() > 0)
{
newPos = ((Forward)actions.Get(actions.Size() - 1)).getToPosition();
}
while (!shootingPositions.Contains(newPos))
{
TurnLeft tLeft = new TurnLeft(newPos.getOrientation());
newPos = new AgentPosition(newPos.getX(), newPos.getY(), tLeft.getToOrientation());
actions.Add(tLeft);
}
actions.Add(new Shoot());
return(actions);
}