noope.laws
Class ParticlePairLaw

java.lang.Object
  |
  +--noope.laws.Law
        |
        +--noope.laws.ParticlePairLaw

Direct Known Subclasses:

Gravity, SphereCollision

public abstract class ParticlePairLaw

extends Law

This is an abstract subclass of Law used to model a Law that acts on a pair of Entitys, i.e. the net force exerted on an entity by this law is the sum of the forces exerted on it by all other entitys. It must be suitable to consider the entitys acted on to be points of mass. To create a subclass, you have to override actOnPair(Entity, Entity), possibly constructNewPropertyRecord and the constructor.

Version:

28 April 2001 Removed ListIterator by Miklos Reiter for compatibility with Java 1.1

Author:

Miklos Reiter

Fields inherited from class noope.laws.Law

physics

Constructor Summary

ParticlePairLaw(BlockReader br, int lawnumber, Physics phys)
Just calls the inherited constructor.

Method Summary

void	act() Apply law to all pairs of entities.
abstract void	actOnPair(Entity ent1, Entity ent2) Applies the law to the two parameters.

Methods inherited from class noope.laws.Law

constructNewPropertyRecord, dispose, getName, getNumber, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ParticlePairLaw

public ParticlePairLaw(BlockReader br,
                       int lawnumber,
                       Physics phys)
                throws BRLoadingException

Just calls the inherited constructor.

Method Detail

act

public void act()

Apply law to all pairs of entities. It just calls actOnPair(Entity, Entity) on all pairs of distinct entitys in Entities. If you want to create a subclass to model a particular law, you should override actOnPair, not act.

Overrides:

act in class Law

Following copied from class: noope.laws.Law

Parameters:

e - the list of entities that the force should act on

See Also:

Entity.addForce(Vector3D)

actOnPair

public abstract void actOnPair(Entity ent1,
                               Entity ent2)

Applies the law to the two parameters. This should be overridden in subclasses.