Package jadex.bdi.examples.hunterprey

Class MoveAction

java.lang.Object

jadex.commons.SimplePropertyObject

jadex.bdi.examples.hunterprey.MoveAction

All Implemented Interfaces:

IPropertyObject, ISpaceAction

public class MoveAction
extends SimplePropertyObject
implements ISpaceAction

Action allowing a creature to move.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	MoveAction.IMoveEvaluator	Interface for evaluating moves.

Field Summary

Fields

Modifier and Type	Field	Description
static java.lang.String	DIRECTION_DOWN	The move direction down.
static java.lang.String	DIRECTION_LEFT	The move direction left.
static java.lang.String	DIRECTION_NONE	Placeholder for "no move" action.
static java.lang.String	DIRECTION_RIGHT	The move direction right.
static java.lang.String	DIRECTION_UP	The move direction up.
static java.lang.String	PARAMETER_DIRECTION	The move direction parameter.
static java.lang.String	PROPERTY_LASTPOS	The last position property (only for hunters).

Fields inherited from class jadex.commons.SimplePropertyObject

pcs, properties

Fields inherited from interface jadex.extension.envsupport.environment.ISpaceAction

ACTOR_ID, OBJECT_ID

Constructor Summary

Constructors

Constructor	Description
MoveAction()

Method Summary

Modifier and Type	Method	Description
static java.lang.String	evaluateMoves(Grid2D space, IVector2 sourcepos, MoveAction.IMoveEvaluator eval)	Get the best move.
static java.lang.String	getAvoidanceDirection(Grid2D space, IVector2 sourcepos, ISpaceObject[] objects)	Move to stay away from the given objects.
static java.lang.String	getDirection(Grid2D space, IVector2 sourcepos, IVector2 targetpos)	Get the best way to go towards a direction.
static java.lang.String[]	getPossibleDirections(Grid2D space, IVector2 sourcepos)	Get the possible moves.
java.lang.Object	perform(java.util.Map parameters, IEnvironmentSpace space)	Performs the action.

Methods inherited from class jadex.commons.SimplePropertyObject

addPropertyChangeListener, getProperties, getProperty, getPropertyNames, hasProperty, removePropertyChangeListener, setProperties, setProperty, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface jadex.commons.IPropertyObject

getProperty, getPropertyNames, hasProperty, setProperty

Field Detail

PARAMETER_DIRECTION

public static final java.lang.String PARAMETER_DIRECTION

The move direction parameter.

See Also:

Constant Field Values

PROPERTY_LASTPOS

public static final java.lang.String PROPERTY_LASTPOS

The last position property (only for hunters).

See Also:

Constant Field Values

DIRECTION_LEFT

public static final java.lang.String DIRECTION_LEFT

The move direction left.

See Also:

Constant Field Values

DIRECTION_RIGHT

public static final java.lang.String DIRECTION_RIGHT

The move direction right.

See Also:

Constant Field Values

DIRECTION_UP

public static final java.lang.String DIRECTION_UP

The move direction up.

See Also:

Constant Field Values

DIRECTION_DOWN

public static final java.lang.String DIRECTION_DOWN

The move direction down.

See Also:

Constant Field Values

DIRECTION_NONE

public static final java.lang.String DIRECTION_NONE

Placeholder for "no move" action.

See Also:

Constant Field Values

Constructor Detail

MoveAction

public MoveAction()

Method Detail

perform

public java.lang.Object perform(java.util.Map parameters,
                                IEnvironmentSpace space)

Performs the action.

Specified by:

perform in interface ISpaceAction

Parameters:

parameters - parameters for the action

space - the environment space

Returns:

action return value

getDirection

public static java.lang.String getDirection(Grid2D space,
                                            IVector2 sourcepos,
                                            IVector2 targetpos)

Get the best way to go towards a direction.

Parameters:

space - The 2D space to move in.

sourcepos - The source position.

targetpos - The target position.

Returns:

The way to go (if any).

getAvoidanceDirection

public static java.lang.String getAvoidanceDirection(Grid2D space,
                                                     IVector2 sourcepos,
                                                     ISpaceObject[] objects)

Move to stay away from the given objects.

Parameters:

space - The 2D space to move in.

sourcepos - The source position.

objects - The objects to avoid.

Returns:

The direction to go ('none', if no move at all is better than moving in any direction).

evaluateMoves

public static java.lang.String evaluateMoves(Grid2D space,
                                             IVector2 sourcepos,
                                             MoveAction.IMoveEvaluator eval)

Get the best move.

Parameters:

space - The 2D space to move in.

sourcepos - The source position.

eval - The move evaluator.

Returns:

The direction to go ('none', if no move at all is better than moving in any direction).

getPossibleDirections

public static java.lang.String[] getPossibleDirections(Grid2D space,
                                                       IVector2 sourcepos)

Get the possible moves.

Parameters:

space - The 2D space to move in.

sourcepos - The source position.

Returns:

The directions to go (i.e. all possible directions excluding 'none' or an array with only 'none').