burlap.domain.singleagent.blocksworld

Class BlocksWorld.UnstackAction

java.lang.Object

burlap.oomdp.singleagent.Action

burlap.oomdp.singleagent.ObjectParameterizedAction

burlap.domain.singleagent.blocksworld.BlocksWorld.UnstackAction

All Implemented Interfaces:

FullActionModel

Enclosing class:

BlocksWorld

public class BlocksWorld.UnstackAction
extends ObjectParameterizedAction
implements FullActionModel

Action class for unstacking a block off of another block and putting it on the table. The block to be unstacked must be clear and must be on another block to be unstacked.

Author:

James MacGlashan

Nested Class Summary

Nested classes/interfaces inherited from class burlap.oomdp.singleagent.ObjectParameterizedAction

ObjectParameterizedAction.ObjectParameterizedGroundedAction

Nested classes/interfaces inherited from interface burlap.oomdp.singleagent.FullActionModel

FullActionModel.FullActionModelHelper

Field Summary

Fields inherited from class burlap.oomdp.singleagent.ObjectParameterizedAction

parameterClasses, parameterOrderGroup

Fields inherited from class burlap.oomdp.singleagent.Action

actionObservers, domain, name

Constructor Summary

Constructors

Constructor and Description
BlocksWorld.UnstackAction(java.lang.String name, Domain domain)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	applicableInState(State st, GroundedAction groundedAction) Returns true if this action can be applied in this specified state with the parameters specified by the provided GroundedAction Default behavior is that an action can be applied in any state, but this will need be overridden if that is not the case.
java.util.List<TransitionProbability>	getTransitions(State s, GroundedAction groundedAction) Returns the transition probabilities for applying this action in the given state with the given set of parameters.
boolean	isPrimitive() Returns whether this action is a primitive action of the domain or not.
boolean	parametersAreObjectIdentifierIndependent()
protected State	performActionHelper(State st, GroundedAction groundedAction) This method determines what happens when an action is applied in the given state with the given parameters.

Methods inherited from class burlap.oomdp.singleagent.ObjectParameterizedAction

getAllApplicableGroundedActions, getAssociatedGroundedAction, getParameterClasses, getParameterOrderGroups, isParameterized

Methods inherited from class burlap.oomdp.singleagent.Action

addActionObserver, clearAllActionsObservers, deterministicTransition, equals, getAllApplicableGroundedActionsFromActionList, getDomain, getGroundedAction, getName, hashCode, performAction, performInEnvironment

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BlocksWorld.UnstackAction

public BlocksWorld.UnstackAction(java.lang.String name,
                         Domain domain)

Method Detail

applicableInState

public boolean applicableInState(State st,
                        GroundedAction groundedAction)

Description copied from class: Action

Returns true if this action can be applied in this specified state with the parameters specified by the provided GroundedAction Default behavior is that an action can be applied in any state, but this will need be overridden if that is not the case.

Specified by:

applicableInState in class Action

Parameters:

st - the state to perform the action on

groundedAction - the GroundedAction specifying the parameters to use

Returns:

whether this action can be performed on the given state with the given parameters

performActionHelper

protected State performActionHelper(State st,
                        GroundedAction groundedAction)

Description copied from class: Action

This method determines what happens when an action is applied in the given state with the given parameters. The State object s may be directly modified in this method since the parent method (Action.performAction(burlap.oomdp.core.states.State, GroundedAction) first copies the input state to pass to this helper method. The resulting state (which may be s) should then be returned.

Specified by:

performActionHelper in class Action

Parameters:

st - the state to perform the action on

groundedAction - the GroundedAction specifying the parameters to use

Returns:

the resulting State from performing this action

getTransitions

public java.util.List<TransitionProbability> getTransitions(State s,
                                                   GroundedAction groundedAction)

Description copied from interface: FullActionModel

Returns the transition probabilities for applying this action in the given state with the given set of parameters. Transition probabilities are specified as list of TransitionProbability objects. The list is only required to contain transitions with non-zero probability.

Specified by:

getTransitions in interface FullActionModel

Parameters:

s - the state from which the transition probabilities when applying this action will be returned.

groundedAction - the GroundedAction specifying the parameters to use

Returns:

a List of transition probabilities for applying this action in the given state with the given set of parameters

parametersAreObjectIdentifierIndependent

public boolean parametersAreObjectIdentifierIndependent()

Specified by:

parametersAreObjectIdentifierIndependent in class ObjectParameterizedAction

isPrimitive

public boolean isPrimitive()

Description copied from class: Action

Returns whether this action is a primitive action of the domain or not. A primitive action is defined to be an action that always takes one time step.

Specified by:

isPrimitive in class Action

Returns:

true if the action is primitive; false otherwise.