helios::ecs::CompositeSystemParam< Param, Fields > Struct Template Reference

Helper for implementing SystemParamTraits on aggregate parameters. More...

#include <composite_param.hpp>

Static Public Member Functions
static Param	Make (World &world, SystemLocalData &data, const AccessPolicy &policy)
	Constructs the aggregate from each field's Make.
static constexpr void	RegisterAccess (AccessPolicyBuilder &builder)
	Registers access for all fields.

Detailed Description

template<typename Param, typename... Fields>
struct helios::ecs::CompositeSystemParam< Param, Fields >

Helper for implementing SystemParamTraits on aggregate parameters.

Inherit from this type in a SystemParamTraits specialization when every field is itself a system parameter. Field types in Fields... must match the aggregate's member types exactly.

Template Parameters

Param	Aggregate parameter type
Fields	System parameter types for each aggregate field, in order

Definition at line 18 of file composite_param.hpp.

Member Function Documentation

Make()

template<typename Param, typename... Fields>

Param helios::ecs::CompositeSystemParam< Param, Fields >::Make ( World & world, SystemLocalData & data, const AccessPolicy & policy )

inlinestatic

Constructs the aggregate from each field's Make.

Parameters

world	World instance
data	Per-system local data
policy	Compiled access policy for the system

Returns

Constructed aggregate parameter

Definition at line 26 of file composite_param.hpp.

RegisterAccess()

template<typename Param, typename... Fields>

constexpr void helios::ecs::CompositeSystemParam< Param, Fields >::RegisterAccess ( AccessPolicyBuilder & builder )

inlinestaticconstexpr

Registers access for all fields.

Parameters

builder

Access policy builder

Definition at line 35 of file composite_param.hpp.