com.jme3.ai.agents.behaviors.npc.steering

Class WanderAreaBehavior

java.lang.Object

com.jme3.scene.control.AbstractControl

com.jme3.ai.agents.behaviors.Behavior

com.jme3.ai.agents.behaviors.npc.steering.AbstractSteeringBehavior

com.jme3.ai.agents.behaviors.npc.steering.AbstractStrengthSteeringBehavior

com.jme3.ai.agents.behaviors.npc.steering.AbstractWanderBehavior

com.jme3.ai.agents.behaviors.npc.steering.WanderAreaBehavior

All Implemented Interfaces:

com.jme3.export.Savable, com.jme3.scene.control.Control

public class WanderAreaBehavior
extends AbstractWanderBehavior

This behavior is based on a easy implementation that "generates random steering force inside an area each frame, but this produces rather uninteresting motion. It is 'twitchy' and produces no sustained turns.

This is done by same calculation as seek behaviour, but difference is that target for this behavior are random positions that changes durring time.

Version:

2.0

Author:

Tihomir Radosavljević - Original wander idea by Thiomir, Jesús Martín Berlanga - Wander redesign by Jesús: Clearer and simpler version

See Also:

AbstractWander

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	WanderAreaBehavior.Offset Offset from the center of the area

Field Summary

Fields

Modifier and Type	Field and Description
protected com.jme3.math.Vector3f	center Area in which agent will wander.
protected WanderAreaBehavior.Offset	offset
protected com.jme3.math.Vector3f	targetPosition Position of target.
protected float	time Current time.

Fields inherited from class com.jme3.ai.agents.behaviors.npc.steering.AbstractWanderBehavior

timeInterval

Fields inherited from class com.jme3.ai.agents.behaviors.npc.steering.AbstractSteeringBehavior

timePerFrame, velocity

Fields inherited from class com.jme3.ai.agents.behaviors.Behavior

agent

Fields inherited from class com.jme3.scene.control.AbstractControl

enabled, spatial

Constructor Summary

Constructors

Constructor and Description
WanderAreaBehavior(Agent agent) Constructor for wander behavior.
WanderAreaBehavior(Agent agent, com.jme3.scene.Spatial spatial) Constructor for wander behavior.

Method Summary

Methods

Modifier and Type	Method and Description
protected com.jme3.math.Vector3f	calculateRawSteering() Calculate steering vector.
protected void	changeTargetPosition(float tpf) Metod for changing target position.
void	setArea(com.jme3.math.Vector3f center, float offsetX, float offsetY, float offsetZ) Setting area for wander.
void	setArea(com.jme3.math.Vector3f center, com.jme3.math.Vector3f offset) Setting area for wander.

Methods inherited from class com.jme3.ai.agents.behaviors.npc.steering.AbstractWanderBehavior

getTimeInterval, setTimeInterval

Methods inherited from class com.jme3.ai.agents.behaviors.npc.steering.AbstractStrengthSteeringBehavior

calculateSteering, setupStrengthControl, setupStrengthControl, setupStrengthControl, setupStrengthControl, setupStrengthControl, turnOffStrengthControl

Methods inherited from class com.jme3.ai.agents.behaviors.npc.steering.AbstractSteeringBehavior

agentTotalMass, calculateNewVelocity, controlUpdate, convertToGameEntities, getBrakingFactor, getTimePerFrame, getVelocity, rotateAgent, setBrakingFactor, setTimePerFrame, setVelocity

Methods inherited from class com.jme3.ai.agents.behaviors.Behavior

controlRender

Methods inherited from class com.jme3.scene.control.AbstractControl

cloneForSpatial, getSpatial, isEnabled, read, render, setEnabled, setSpatial, update, write

Methods inherited from class java.lang.Object

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

Field Detail

targetPosition

protected com.jme3.math.Vector3f targetPosition

Position of target.

time

protected float time

Current time.

center

protected com.jme3.math.Vector3f center

Area in which agent will wander.

offset

protected WanderAreaBehavior.Offset offset

See Also:

WanderAreaBehavior.Offset

Constructor Detail

WanderAreaBehavior

public WanderAreaBehavior(Agent agent)

Constructor for wander behavior.

Parameters:

agent - to whom behavior belongs

WanderAreaBehavior

public WanderAreaBehavior(Agent agent,
                  com.jme3.scene.Spatial spatial)

Constructor for wander behavior.

Parameters:

agent - to whom behavior belongs

spatial - active spatial during excecution of behavior

Method Detail

calculateRawSteering

protected com.jme3.math.Vector3f calculateRawSteering()

Calculate steering vector.

Specified by:

calculateRawSteering in class AbstractStrengthSteeringBehavior

Returns:

steering vector

See Also:

AbstractSteeringBehavior.calculateSteering()

changeTargetPosition

protected void changeTargetPosition(float tpf)

Metod for changing target position.

Parameters:

tpf - time per frame

setArea

public void setArea(com.jme3.math.Vector3f center,
           float offsetX,
           float offsetY,
           float offsetZ)

Setting area for wander.

Parameters:

center - center of the area

offsetX - max random offset from center

offsetY - max random offset from center

offsetZ - max random offset from center

setArea

public void setArea(com.jme3.math.Vector3f center,
           com.jme3.math.Vector3f offset)

Setting area for wander.

Parameters:

center - center of the area

offset - max random offset from center