SystemManager Class Reference

Manages execution order and lifetime of systems. More...

#include <SystemManager.hpp>

Public Member Functions
	SystemManager (const SystemManager &)=delete
SystemManager &	operator= (const SystemManager &)=delete
template<typename SystemT, typename... Args>
std::shared_ptr< SystemT >	AddSystem (const u32 priority=1, Args &&... args)
	Constructs a system and adds it to the manager.
template<typename SystemT>
void	RemoveSystem ()
	Removes a system from the manager.
template<typename SystemT>
std::shared_ptr< SystemT >	GetSystem ()
	Returns a shared pointer to a managed system.
void	ClearSystems ()
	Removes and destroys all managed systems.

Friends
class	Engine

Detailed Description

Manages execution order and lifetime of systems.

Systems are updated and drawn in ascending priority order. Lower priority values execute first. Systems update and draw before scenes each frame.

Member Function Documentation

AddSystem()

template<typename SystemT, typename... Args>

std::shared_ptr< SystemT > SystemManager::AddSystem ( const u32 priority = 1, Args &&... args )

inline

Constructs a system and adds it to the manager.

The system is owned by the manager. Systems are sorted by priority immediately after insertion.

Template Parameters

SystemT	System type (must derive from the System base class)
Args	System constructor argument types

Parameters

priority	Execution priority — lower values run first (default 1)
args	Arguments forwarded to the system constructor

Returns

Shared pointer to the created system

Usage:

auto physics = systemManager.AddSystem<PhysicsSystem>(3, gravity);

ClearSystems()

void SystemManager::ClearSystems

(

)

Removes and destroys all managed systems.

Called by the Engine destructor.

GetSystem()

template<typename SystemT>

std::shared_ptr< SystemT > SystemManager::GetSystem ( )

inline

Returns a shared pointer to a managed system.

Returns an empty pointer if no system of this type has been added.

Template Parameters

SystemT

System type to retrieve

Returns

Shared pointer to the system, or nullptr if not found

RemoveSystem()

template<typename SystemT>

void SystemManager::RemoveSystem ( )

inline

Removes a system from the manager.

The system is destroyed when no more shared_ptrs to it remain. Does nothing if the system is not currently managed.

Template Parameters

SystemT

System type to remove

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The documentation for this class was generated from the following files:

• src/Engine/SystemManager.hpp
• src/Engine/SystemManager.cpp