Helper to iterate several component lists simultaneously. More...

Public Member Functions
	ComponentIterator (T &main, Types &... list)
	Constructor. More...

bool	next ()
	Iterates all lists until an entity containing all components is found. More...

auto	get ()
	Retrieve the components of the last entity found using next. More...

Entity	getEntity ()
	retrieves the entity being currently iterated More...

void	reset ()
	Resets the internal state, so that you can iterate the lists again.

Detailed Description

template<typename T, typename... Types>
class ComponentIterator< T, Types >

Helper to iterate several component lists simultaneously.

Template Parameters

T	Main list to iterate; it should be a list that contains fewer components.
Types	Rest of the lists.

Constructor & Destructor Documentation

template<typename T , typename... Types>

ComponentIterator< T, Types >::ComponentIterator	(	T &	main,
		Types &...	list
	)

inline

Constructor.

Parameters

main	Should be a list that contains fewer components.
...list	Rest of the lists.

template<typename T , typename... Types>

auto ComponentIterator< T, Types >::get ( )

inline

Retrieve the components of the last entity found using next.

Returns: Tuple containing references to all the requested components on the entity.

template<typename T , typename... Types>

Entity ComponentIterator< T, Types >::getEntity ( )

inline

retrieves the entity being currently iterated

make sure you don't delete an entity during iteration it will break the internal iterator and probably crash the program

you can store the entities you want to delete in an array and delete them after the loop has finished

template<typename T , typename... Types>

bool ComponentIterator< T, Types >::next ( )

inline

Iterates all lists until an entity containing all components is found.

Returns: True if an entity was found, false if no new entity was found before reaching the end of a list.