Package dev.prozilla.pine.core.system

Class SystemGroup<S extends SystemBase>

java.lang.Object

dev.prozilla.pine.core.system.SystemGroup<S>

Type Parameters:

S - Type of the systems in this group.

All Implemented Interfaces:

Container<S>, Iterable<S>

public class SystemGroup<S extends SystemBase>
extends Object
implements Container<S>

A wrapper for systems of the same type. All systems in a group are executed during the same step of the game loop.

Constructor Summary

Constructors

Constructor	Description
SystemGroup(World world, Class<S> type)	Creates a new system group in a world with systems of a given type.

Method Summary

Modifier and Type	Method	Description
boolean	add(SystemBase system)	Adds a system to this group if it matches the type of this group.
void	clear()	Removes all systems from this group.
void	forEach(Consumer<? super S> consumer)	Iterates over each system in this group.
boolean	isEmpty()	Returns true if this group is empty.
Iterator<S>	iterator()
void	register(Entity entity)	Registers an entity in all systems in this group.
int	size()	Returns the amount of systems in this group.
void	unregister(Entity entity)	Unregisters an entity from all systems in this group.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

spliterator

Constructor Details

SystemGroup

public SystemGroup(World world,
 Class<S> type)

Creates a new system group in a world with systems of a given type.

Parameters:

type - Type of the systems in this group

Method Details

add

public boolean add(SystemBase system)
            throws IllegalStateException

Adds a system to this group if it matches the type of this group.

Specified by:

add in interface Container<S extends SystemBase>

Parameters:

system - Item to add to this container

Returns:

True if the system matched the type of this group.

Throws:

IllegalStateException

isEmpty

public boolean isEmpty()

Returns true if this group is empty.

Specified by:

isEmpty in interface Container<S extends SystemBase>

Returns:

True if this container has no items.

size

public int size()

Returns the amount of systems in this group.

Specified by:

size in interface Container<S extends SystemBase>

Returns:

The amount of items in this container.

forEach

public void forEach(Consumer<? super S> consumer)

Iterates over each system in this group.

Specified by:

forEach in interface Iterable<S extends SystemBase>

register

public void register(Entity entity)

Registers an entity in all systems in this group.

unregister

public void unregister(Entity entity)

Unregisters an entity from all systems in this group.

iterator

public Iterator<S> iterator()

Specified by:

iterator in interface Iterable<S extends SystemBase>

clear

public void clear()

Removes all systems from this group.

Specified by:

clear in interface Container<S extends SystemBase>