burlap.domain.singleagent.gridworld

Class GridWorldDomain.MovementAction

java.lang.Object

burlap.oomdp.singleagent.Action

burlap.oomdp.singleagent.common.SimpleAction

burlap.domain.singleagent.gridworld.GridWorldDomain.MovementAction

All Implemented Interfaces:

FullActionModel

Enclosing class:

GridWorldDomain

public class GridWorldDomain.MovementAction
extends SimpleAction
implements FullActionModel

Action class for movement actions in grid world.

Author:

James MacGlashan

Nested Class Summary

Nested classes/interfaces inherited from class burlap.oomdp.singleagent.common.SimpleAction

SimpleAction.SimpleDeterministicAction

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

FullActionModel.FullActionModelHelper

Field Summary

Fields

Modifier and Type	Field and Description
protected double[]	directionProbs Probabilities of the actual direction the agent will go
protected int[][]	map The map of the world
protected java.util.Random	rand Random object for sampling distribution

Fields inherited from class burlap.oomdp.singleagent.Action

actionObservers, domain, name

Constructor Summary

Constructors

Constructor and Description
GridWorldDomain.MovementAction(java.lang.String name, Domain domain, double[] directions, int[][] map) Initializes for the given name, domain and actually direction probabilities the agent will go

Method Summary

Methods

Modifier and Type	Method and Description
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.
protected State	performActionHelper(State s, 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.common.SimpleAction

applicableInState, getAllApplicableGroundedActions, getAssociatedGroundedAction, isParameterized, isPrimitive

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

Field Detail

directionProbs

protected double[] directionProbs

Probabilities of the actual direction the agent will go

rand

protected java.util.Random rand

Random object for sampling distribution

map

protected int[][] map

The map of the world

Constructor Detail

GridWorldDomain.MovementAction

public GridWorldDomain.MovementAction(java.lang.String name,
                              Domain domain,
                              double[] directions,
                              int[][] map)

Initializes for the given name, domain and actually direction probabilities the agent will go

Parameters:

name - name of the action

domain - the domain of the action

directions - the probability for each direction (index 0,1,2,3 corresponds to north,south,east,west, respectively).

map - the map of the world

Method Detail

performActionHelper

protected State performActionHelper(State s,
                        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:

s - 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