com.threerings.tudey.util
Class ActorAdvancer

java.lang.Object
  com.threerings.tudey.util.ActorAdvancer

Direct Known Subclasses:

MobileAdvancer

public class ActorAdvancer
extends Object

Used on the client and the server to advance the state of an actor based on its state and surroundings.

Nested Class Summary

static interface

ActorAdvancer.Environment Provides a callback mechanism to allow the advancer to query the actor's environment while advancing it.

Field Summary

protected Actor	_actor The current actor state.
protected ActorAdvancer.Environment	_environment The actor's environment.
protected Shape	_shape The shape of the actor.
protected int	_timestamp The timestamp at which the state is valid.
protected Transform2D	_transform Used to store the actor's transform.

Constructor Summary

ActorAdvancer(ActorAdvancer.Environment environment, Actor actor, int timestamp)
Creates a new advancer for the supplied actor.

Method Summary

void	advance(int timestamp) Advances the actor to the specified timestamp.
Actor	getActor() Returns a reference to the advancer actor.
int	getTimestamp() Returns the advancer timestamp.
void	init(Actor actor, int timestamp) (Re)initializes the advancer.
void	jump(int timestamp) Jumps to the specified timestamp without actually taking a step.
protected void	step(float elapsed) Takes an Euler step of the specified length.
void	transfer(ActorAdvancer source) Transfers state from the specified source advancer.
protected void	updateShape() Updates the stored shape.

Methods inherited from class java.lang.Object

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

Field Detail

_environment

protected ActorAdvancer.Environment _environment

The actor's environment.

_actor

protected Actor _actor

The current actor state.

_timestamp

protected int _timestamp

The timestamp at which the state is valid.

_shape

protected Shape _shape

The shape of the actor.

_transform

protected Transform2D _transform

Used to store the actor's transform.

Constructor Detail

ActorAdvancer

public ActorAdvancer(ActorAdvancer.Environment environment,
                     Actor actor,
                     int timestamp)

Creates a new advancer for the supplied actor.

Method Detail

getActor

public Actor getActor()

Returns a reference to the advancer actor.

getTimestamp

public int getTimestamp()

Returns the advancer timestamp.

init

public void init(Actor actor,
                 int timestamp)

(Re)initializes the advancer.

transfer

public void transfer(ActorAdvancer source)

Transfers state from the specified source advancer.

advance

public void advance(int timestamp)

Advances the actor to the specified timestamp.

jump

public void jump(int timestamp)

Jumps to the specified timestamp without actually taking a step.

step

protected void step(float elapsed)

Takes an Euler step of the specified length.

updateShape

protected void updateShape()

Updates the stored shape.