PER.rover
Class SmartWanderAction

java.lang.Object
  extended byPER.rover.SmartWanderAction
All Implemented Interfaces:
Action, java.io.Serializable

public class SmartWanderAction
extends java.lang.Object
implements Action

Allows the rover to explore an area without running in to things. The rover will drive in a straight line until it encounters an obstacle. Then it will turn in place by a random angle and drive in a new direction.

See Also:
Serialized Form

Constructor Summary
SmartWanderAction(int seconds)
          Creates a new instance of SmartWanderAction that takes pictures as it moves.
SmartWanderAction(int seconds, boolean takePictures)
          Creates a new instance of SmartWanderAction.
 
Method Summary
 boolean doAction(Rover r)
          Tries to start the action.
 long getImageUpdateTime()
          Lets you know when the last image was taken by this action.
 java.awt.image.BufferedImage getRecentImage()
          Returns the most recent image taken by this Action.
 int getReturnValue()
          The return value of the Action.
 java.lang.String getShortSummary()
          Provides a shortened version of the summary returned by getSummary.
 java.lang.String getSummary()
          Provides a textual explanation of the Action, such as "turn 90 degrees"
 int getTime()
          How long the action will take, in milliseconds.
 int getTimeRemaining()
          How much time until the action finishes (in milliseconds), if it has already started.
 boolean isCompleted()
          Whether the action has completed.
 boolean isSuccess()
          Returns true if the time limit expired without the occurance of any errors.
 void kill()
          Emergency stop - end the action immediately, if it's running.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

SmartWanderAction

public SmartWanderAction(int seconds)
Creates a new instance of SmartWanderAction that takes pictures as it moves. Use Rover.receive.getRecentImage() to get the pictures as the robot is driving.

Parameters:
seconds - the length of time to wander in seconds

SmartWanderAction

public SmartWanderAction(int seconds,
                         boolean takePictures)
Creates a new instance of SmartWanderAction. If the rover is taking pictures, use Rover.receive.getRecentImage() to get the pictures as the robot is driving.

Parameters:
seconds - the length of time to wander in seconds
takePictures - if true, the rover will take pictures while turning and driving
Method Detail

doAction

public boolean doAction(Rover r)
Description copied from interface: Action
Tries to start the action. Returns whether the action started.

Specified by:
doAction in interface Action

getReturnValue

public int getReturnValue()
Description copied from interface: Action
The return value of the Action. Zero is a success. Negative implies one of this class's constants. Other values should be interpreted as appropriate.

Specified by:
getReturnValue in interface Action
See Also:
RoverState, ActionConstants

getShortSummary

public java.lang.String getShortSummary()
Description copied from interface: Action
Provides a shortened version of the summary returned by getSummary. For example, getSummary may return something like "Turn left and drive about 39 inches toward the red landmark," whereas getShortSummary might just return "Drive toward a landmark."

Specified by:
getShortSummary in interface Action

getSummary

public java.lang.String getSummary()
Description copied from interface: Action
Provides a textual explanation of the Action, such as "turn 90 degrees"

Specified by:
getSummary in interface Action

getTime

public int getTime()
Description copied from interface: Action
How long the action will take, in milliseconds.

Specified by:
getTime in interface Action

getTimeRemaining

public int getTimeRemaining()
Description copied from interface: Action
How much time until the action finishes (in milliseconds), if it has already started. Undefined behavior if the action has not yet begun, or has finished.

Specified by:
getTimeRemaining in interface Action

isCompleted

public boolean isCompleted()
Description copied from interface: Action
Whether the action has completed. Undefined until doAction has been called.

Specified by:
isCompleted in interface Action

isSuccess

public boolean isSuccess()
Returns true if the time limit expired without the occurance of any errors.

Specified by:
isSuccess in interface Action

kill

public void kill()
Description copied from interface: Action
Emergency stop - end the action immediately, if it's running.

Specified by:
kill in interface Action

getImageUpdateTime

public long getImageUpdateTime()
Description copied from interface: Action
Lets you know when the last image was taken by this action. If the Action does not take pictures or the first picture has not yet been taken, will return 0.

Specified by:
getImageUpdateTime in interface Action
Returns:
the system time in milliseconds when the last image was taken or 0 if no images have been taken

getRecentImage

public java.awt.image.BufferedImage getRecentImage()
Description copied from interface: Action
Returns the most recent image taken by this Action. The image will be null if the Action does not take pictures or the first picture has not yet been taken.

Specified by:
getRecentImage in interface Action
Returns:
the most recent picture taken by the Action.