Package net.dermetfan.gdx.physics.box2d

Class WorldObserver

java.lang.Object

net.dermetfan.gdx.physics.box2d.WorldObserver

public class WorldObserver
extends Object

Notifies a WorldObserver.Listener of changes in the world. Does NOT work on HTML5!

Since:

0.6.0

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	WorldObserver.BodyChange	the changes of a Body
static interface	WorldObserver.Change<T>	the changes of an object in a world since the last time WorldObserver.Change.update(Object) was called
static class	WorldObserver.DistanceJointChange	the changes of a DistanceJoint
static class	WorldObserver.FixtureChange	the changes of a Fixture
static class	WorldObserver.FrictionJointChange	the changes of a FrictionJoint
static class	WorldObserver.GearJointChange	the changes of a GearJoint
static class	WorldObserver.JointChange<T extends com.badlogic.gdx.physics.box2d.Joint>	the changes of a Joint
static interface	WorldObserver.Listener	the listener notified by a WorldObserver
static class	WorldObserver.MotorJointChange	the changes of a MotorJoint
static class	WorldObserver.MouseJointChange	the changes of a MouseJoint
static class	WorldObserver.PrismaticJointChange	the changes of a PrismaticJoint
static class	WorldObserver.RevoluteJointChange	the changes of a RevoluteJoint
static class	WorldObserver.RopeJointChange	the changes of a RopeJoint
static class	WorldObserver.UnexpectedListener	A Listener that calls another Listener on unpredictable/unexpected events.
static class	WorldObserver.WeldJointChange	the changes of a WeldJoint
static class	WorldObserver.WheelJointChange	the changes of a WheelJoint
static class	WorldObserver.WorldChange	the changes of a World

Constructor Summary

Constructors

Constructor	Description
WorldObserver()	creates a new WorldObserver with no listener
WorldObserver(WorldObserver.Listener listener)

Method Summary

Modifier and Type	Method	Description
WorldObserver.BodyChange	getBodyChange(int hash)
WorldObserver.FixtureChange	getFixtureChange(int hash)
WorldObserver.JointChange	getJointChange(com.badlogic.gdx.physics.box2d.Joint joint)
WorldObserver.Listener	getListener()
WorldObserver.WorldChange	getWorldChange()
void	setListener(WorldObserver.Listener listener)
void	update(com.badlogic.gdx.physics.box2d.World world, float step)

Methods inherited from class java.lang.Object

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

Constructor Details

WorldObserver

public WorldObserver()

creates a new WorldObserver with no listener

WorldObserver

public WorldObserver(WorldObserver.Listener listener)

Parameters:

listener - the listener

Method Details

update

public void update(com.badlogic.gdx.physics.box2d.World world,
 float step)

Parameters:

world - Ideally always the same World because its identity is not checked. Passing in another world instance will cause all differences between the two worlds to be processed.

step - the time the world was last stepped with

getBodyChange

public WorldObserver.BodyChange getBodyChange(int hash)

Parameters:

hash - the hash of the Body (computed via Box2DUtils#hashCode(Body)) which associated BodyChange to return

Returns:

the BodyChange from bodyChanges currently used for the Body with the given hash, or null if not found

getFixtureChange

public WorldObserver.FixtureChange getFixtureChange(int hash)

Parameters:

hash - the hash of the Fixture (computed via Box2DUtils#hashCode(Fixture)) which associated FixtureChange to return

Returns:

the FixtureChange from fixtureChanges currently used for the Fixture with the given hash, or null if not found

getJointChange

public WorldObserver.JointChange getJointChange(com.badlogic.gdx.physics.box2d.Joint joint)

Parameters:

joint - the joint which associated JointChange to return

Returns:

the JointChange from jointChanges currently used for the given Joint

getWorldChange

public WorldObserver.WorldChange getWorldChange()

Returns:

the worldChange

getListener

public WorldObserver.Listener getListener()

Returns:

the listener

setListener

public void setListener(WorldObserver.Listener listener)

Parameters:

listener - the listener to set