StevEngine::GameObject Class Reference

Core game object class. More...

#include <main/GameObject.hpp>

Public Member Functions
Utilities::ID	Id () const
	Get object's unique ID.
Utilities::Vector3	GetPosition () const
	Get local position.
Utilities::Quaternion	GetRotation () const
	Get local rotation.
Utilities::Vector3	GetScale () const
	Get local scale.
void	SetPosition (Utilities::Vector3 position, bool announce=true)
	Set local position.
void	SetRotation (Utilities::Quaternion rotation, bool announce=true)
	Set local rotation.
void	SetScale (Utilities::Vector3 scale, bool announce=true)
	Set local scale.
void	SetTransform (Utilities::Vector3 position, Utilities::Quaternion rotation, Utilities::Vector3 scale, bool announce=true)
	Set full local transform.
Utilities::Vector3	GetWorldPosition () const
	Get world position.
Utilities::Quaternion	GetWorldRotation () const
	Get world rotation.
Utilities::Vector3	GetWorldScale () const
	Get world scale.
	~GameObject ()
Utilities::Stream	Export (Utilities::StreamType type) const
	Serialize object to a stream.
void	Import (Utilities::Stream &stream)
	Load object from serialized data.
	GameObject (Utilities::ID id, std::string name, std::string scene)
	Should never be called directly, use Scene::CreateObject.
template<typename EventType>
Utilities::ID	Subscribe (EventFunction< EventType > handler, bool allowFromChild=true)
	Subscribe to object events.
template<typename EventType>
void	Publish (const EventType &event)
	Publish an event.
void	Unsubscribe (const std::string eventId, const Utilities::ID handlerId)
	Unsubscribe from events.
int	AddChild (const Utilities::ID &gameObjectID)
	Add child object.
void	RemoveChild (int index)
	Remove child at index.
GameObject &	GetChild (int index) const
	Get child object.
uint32_t	GetChildCount () const
	Get number of children.
bool	HasParent () const
	Check if object has a parent.
GameObject &	GetParent () const
	Get parent object.
Scene &	GetScene () const
	Get containing Scene.
template<class T> requires std::is_base_of_v<Component, T>
T *	GetComponent (bool log=true)
	Get component of specified type.
template<class T>
std::enable_if< std::is_base_of< Component, T >::value, std::vector< T * > >::type	GetAllComponents ()
	Get all components of specified type.
std::vector< Component * >	GetAllComponents () const
	Get all components of any type.
template<class T> requires std::is_base_of_v<Component,T>
std::vector< T * >	GetAllComponentsInChildren ()
	Get components of type from this object and all children.
template<class T> requires std::is_base_of_v<Component,T>
T *	AddComponent (T *component)
	Add component to object.
template<class T> requires std::is_base_of_v<Component,T>
void	RemoveAllComponents ()
	Remove all components of specified type.
template<class T> requires std::is_base_of_v<Component,T>
void	RemoveComponent (T *component)
	Remove specific component instance.

Public Attributes
std::string	name
	Object name/label.

Friends
class	SceneManager
class	Scene

Detailed Description

Core game object class.

Base class for all entities in the game world. Handles transform hierarchy, component management, and event propagation.

Constructor & Destructor Documentation

~GameObject()

StevEngine::GameObject::~GameObject

(

)

Log::Normal(std::format("Destroying object with id {}", id), true);

GameObject()

StevEngine::GameObject::GameObject	(	Utilities::ID	id,
		std::string	name,
		std::string	scene )

Should never be called directly, use Scene::CreateObject.

Constructs a GameObject with the specified properties.

Member Function Documentation

AddChild()

int StevEngine::GameObject::AddChild

(

const Utilities::ID &

gameObjectID

)

Add child object.

Parameters

gameObjectID

ID of child object

Returns

Index of new child

AddComponent()

template<class T>
requires std::is_base_of_v<Component,T>

T * StevEngine::GameObject::AddComponent ( T * component )

inline

Add component to object.

Template Parameters

T	Component type to add

Parameters

component

Component instance to add

Returns

Pointer to added component or nullptr if failed

Export()

Utilities::Stream StevEngine::GameObject::Export

(

Utilities::StreamType

type

)

const

Serialize object to a stream.

Parameters

type	Type of stream to export to

Returns

Stream containing serialized object data

GetAllComponents() [1/2]

template<class T>

std::enable_if< std::is_base_of< Component, T >::value, std::vector< T * > >::type StevEngine::GameObject::GetAllComponents ( )

inline

Get all components of specified type.

Template Parameters

T	Component type to get

Returns

Vector of matching components

GetAllComponents() [2/2]

std::vector< Component * > StevEngine::GameObject::GetAllComponents ( ) const

inline

Get all components of any type.

Returns

Vector of all components

GetAllComponentsInChildren()

template<class T>
requires std::is_base_of_v<Component,T>

std::vector< T * > StevEngine::GameObject::GetAllComponentsInChildren ( )

inline

Get components of type from this object and all children.

Template Parameters

T	Component type to get

Returns

Vector of matching components

GetChild()

GameObject & StevEngine::GameObject::GetChild

(

int

index

)

const

Get child object.

Parameters

index

Child index

Returns

Pointer to child object

GetChildCount()

uint32_t StevEngine::GameObject::GetChildCount

(

)

const

Get number of children.

Returns

Child count

GetComponent()

template<class T>
requires std::is_base_of_v<Component, T>

T * StevEngine::GameObject::GetComponent ( bool log = true )

inline

Get component of specified type.

Template Parameters

T	Component type to get

Parameters

log	Whether to log if component not found

Returns

Pointer to component or nullptr if not found

GetParent()

GameObject & StevEngine::GameObject::GetParent

(

)

const

Get parent object.

Returns

Pointer to parent object

GetPosition()

Utilities::Vector3 StevEngine::GameObject::GetPosition

(

)

const

Get local position.

Returns

Local position vector

GetRotation()

Utilities::Quaternion StevEngine::GameObject::GetRotation

(

)

const

Get local rotation.

Returns

Local rotation quaternion

GetScale()

Utilities::Vector3 StevEngine::GameObject::GetScale

(

)

const

Get local scale.

Returns

Local scale vector

GetScene()

Scene & StevEngine::GameObject::GetScene

(

)

const

Get containing Scene.

Returns

Pointer to containing Scene

GetWorldPosition()

Utilities::Vector3 StevEngine::GameObject::GetWorldPosition

(

)

const

Get world position.

Returns

World space position

GetWorldRotation()

Utilities::Quaternion StevEngine::GameObject::GetWorldRotation

(

)

const

Get world rotation.

Returns

World space rotation

GetWorldScale()

Utilities::Vector3 StevEngine::GameObject::GetWorldScale

(

)

const

Get world scale.

Returns

World space scale

HasParent()

bool StevEngine::GameObject::HasParent ( ) const

inline

Check if object has a parent.

Returns

true if object has a parent, otherwise false

Id()

Utilities::ID StevEngine::GameObject::Id ( ) const

inline

Get object's unique ID.

Returns

Unique identifier

Import()

void StevEngine::GameObject::Import

(

Utilities::Stream &

stream

)

Load object from serialized data.

Parameters

stream

Stream containing serialized object data

Publish()

template<typename EventType>

void StevEngine::GameObject::Publish ( const EventType & event )

inline

Publish an event.

Template Parameters

EventType

Type of event to publish

Parameters

event

Event to publish

RemoveAllComponents()

template<class T>
requires std::is_base_of_v<Component,T>

void StevEngine::GameObject::RemoveAllComponents ( )

inline

Remove all components of specified type.

Template Parameters

T	Component type to remove

delete *i;

RemoveChild()

void StevEngine::GameObject::RemoveChild

(

int

index

)

Remove child at index.

Parameters

index

Index of child to remove

RemoveComponent()

template<class T>
requires std::is_base_of_v<Component,T>

void StevEngine::GameObject::RemoveComponent ( T * component )

inline

Remove specific component instance.

Template Parameters

T	Component type to remove

Parameters

component

Pointer to component to remove

SetPosition()

void StevEngine::GameObject::SetPosition	(	Utilities::Vector3	position,
		bool	announce = true )

Set local position.

Parameters

position	New position
announce	Whether to trigger transform event

SetRotation()

void StevEngine::GameObject::SetRotation	(	Utilities::Quaternion	rotation,
		bool	announce = true )

Set local rotation.

Parameters

rotation	New rotation
announce	Whether to trigger transform event

SetScale()

void StevEngine::GameObject::SetScale	(	Utilities::Vector3	scale,
		bool	announce = true )

Set local scale.

Parameters

scale	New scale
announce	Whether to trigger transform event

SetTransform()

void StevEngine::GameObject::SetTransform	(	Utilities::Vector3	position,
		Utilities::Quaternion	rotation,
		Utilities::Vector3	scale,
		bool	announce = true )

Set full local transform.

Parameters

position	New position
rotation	New rotation
scale	New scale
announce	Whether to trigger transform event

Subscribe()

template<typename EventType>

Utilities::ID StevEngine::GameObject::Subscribe ( EventFunction< EventType > handler, bool allowFromChild = true )

inline

Subscribe to object events.

Template Parameters

EventType

Type of event to subscribe to

Parameters

handler	Function to handle event
allowFromChild	Whether to receive events from children

Returns

Subscription ID

Unsubscribe()

void StevEngine::GameObject::Unsubscribe ( const std::string eventId, const Utilities::ID handlerId )

inline

Unsubscribe from events.

Parameters

eventId	Event type identifier
handlerId	Handler ID to unsubscribe

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

• main/GameObject.hpp
• main/GameObject.cpp