Part one - removed references and smart pointers
This commit is contained in:
@ -1,117 +1,117 @@
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// Copyright (c) 2022 Dominic Masters
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//
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// This software is released under the MIT License.
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// https://opensource.org/licenses/MIT
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#pragma once
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#include "SceneItemComponent.hpp"
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#include "display/Transform.hpp"
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#include "event/Event.hpp"
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namespace Dawn {
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typedef int32_t sceneitemid_t;
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class Scene;
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class SceneItem {
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private:
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std::vector<std::shared_ptr<SceneItemComponent>> components;
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public:
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Scene &scene;
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sceneitemid_t id;
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Transform transform;
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/**
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* Constructor for a SceneItem. Scene Items should only be called and
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* initialized by the scene itself.
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*
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* @param scene Weak pointer to the Scene that this SceneItem belongs to.
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* @param id Scene Item ID that the Scene assigned this SceneItem.
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*/
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SceneItem(Scene &scene, sceneitemid_t id);
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/**
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* Called by the Scene the frame after we were constructed so we can begin
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* existing.
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*/
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void init();
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/**
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* Adds a component to this scene item. Components will only have their
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* init methods invoked on the first frame we enter the scene. If you add
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* a component to this item after this time you will either need to try
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* manually invoking its' init method, or ensure the component is aware of
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* the entire SceneItem lifecycle and listen for added callbacks.
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*
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* @tparam T Type of component being added to this scene item.
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* @return A shared pointer to the newly added component.
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*/
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template<class T>
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std::shared_ptr<T> addComponent() {
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auto component = std::make_shared<T>(*this);
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this->components.push_back(component);
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return component;
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}
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/**
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* Returns a component attached to this SceneItem. This method will return
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* either a shared pointer to the component, or nullptr if the item does
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* not have the queried component.
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*
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* @tparam T Type of component to be fetched.
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* @return A shared pointer to the component, or nullptr if not found.
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*/
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template<class T>
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std::shared_ptr<T> getComponent() {
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auto it = this->components.begin();
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while(it != this->components.end()) {
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auto castedAs = std::dynamic_pointer_cast<T>(*it);
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if(castedAs != nullptr) return castedAs;
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++it;
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}
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return nullptr;
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}
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/**
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* Finds a (direct) child of this component that has a matching component.
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*
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* @tparam T Component to find child of.
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* @return Pointer to the child, or nullptr if not found.
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*/
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template<class T>
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std::shared_ptr<T> findChild() {
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auto it = this->transform.children.begin();
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while(it != this->transform.children.end()) {
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auto child = (*it)->item.getComponent<T>();
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if(child != nullptr) return child;
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++it;
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}
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return nullptr;
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}
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/**
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* Finds all (direct) children of this component that match the queried
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* component.
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*
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* @tparam T Component to find children for.
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* @return Array of pointers to matching children.
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*/
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template<class T>
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std::vector<std::shared_ptr<T>> findChildren() {
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auto it = this->transform.children.begin();
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std::vector<std::shared_ptr<T>> children;
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while(it != this->transform.children.end()) {
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auto child = (*it)->item.getComponent<T>();
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if(child != nullptr) children.push_back(child);
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++it;
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}
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return children;
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}
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/**
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* Destroy this SceneItem.
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*/
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~SceneItem();
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};
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// Copyright (c) 2022 Dominic Masters
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//
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// This software is released under the MIT License.
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// https://opensource.org/licenses/MIT
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#pragma once
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#include "SceneItemComponent.hpp"
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#include "display/Transform.hpp"
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#include "event/Event.hpp"
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namespace Dawn {
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typedef int32_t sceneitemid_t;
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class Scene;
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class SceneItem {
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private:
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std::vector<SceneItemComponent*> components;
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public:
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Scene *scene;
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sceneitemid_t id;
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Transform transform;
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/**
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* Constructor for a SceneItem. Scene Items should only be called and
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* initialized by the scene itself.
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*
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* @param scene Weak pointer to the Scene that this SceneItem belongs to.
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* @param id Scene Item ID that the Scene assigned this SceneItem.
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*/
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SceneItem(Scene *scene, sceneitemid_t id);
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/**
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* Called by the Scene the frame after we were constructed so we can begin
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* existing.
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*/
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void init();
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/**
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* Adds a component to this scene item. Components will only have their
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* init methods invoked on the first frame we enter the scene. If you add
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* a component to this item after this time you will either need to try
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* manually invoking its' init method, or ensure the component is aware of
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* the entire SceneItem lifecycle and listen for added callbacks.
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*
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* @tparam T Type of component being added to this scene item.
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* @return A shared pointer to the newly added component.
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*/
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template<class T>
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T * addComponent() {
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auto component = new T(this);
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this->components.push_back(component);
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return component;
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}
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/**
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* Returns a component attached to this SceneItem. This method will return
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* either a shared pointer to the component, or nullptr if the item does
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* not have the queried component.
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*
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* @tparam T Type of component to be fetched.
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* @return A shared pointer to the component, or nullptr if not found.
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*/
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template<class T>
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T * getComponent() {
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auto it = this->components.begin();
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while(it != this->components.end()) {
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T *castedAs = dynamic_cast<T*>(*it);
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if(castedAs != nullptr) return castedAs;
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++it;
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}
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return nullptr;
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}
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/**
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* Finds a (direct) child of this component that has a matching component.
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*
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* @tparam T Component to find child of.
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* @return Pointer to the child, or nullptr if not found.
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*/
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template<class T>
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T * findChild() {
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auto it = this->transform.children.begin();
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while(it != this->transform.children.end()) {
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auto child = (*it)->item->getComponent<T>();
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if(child != nullptr) return child;
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++it;
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}
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return nullptr;
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}
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/**
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* Finds all (direct) children of this component that match the queried
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* component.
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*
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* @tparam T Component to find children for.
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* @return Array of pointers to matching children.
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*/
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template<class T>
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std::vector<T*> findChildren() {
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auto it = this->transform.children.begin();
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std::vector<T*> children;
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while(it != this->transform.children.end()) {
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auto child = (*it)->item->getComponent<T>();
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if(child != nullptr) children.push_back(child);
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++it;
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}
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return children;
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}
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/**
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* Destroy this SceneItem.
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*/
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~SceneItem();
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};
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}
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