💿🐜 Antkeeper source code
https://antkeeper.com
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69 lines
1.9 KiB
69 lines
1.9 KiB
/*
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* Copyright (C) 2017-2019 Christopher J. Howard
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*
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* This file is part of Antkeeper Source Code.
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*
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* Antkeeper Source Code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Antkeeper Source Code is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Antkeeper Source Code. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef COMPONENT_OBSERVER_HPP
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#define COMPONENT_OBSERVER_HPP
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#include "entity-id.hpp"
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class ComponentBase;
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class ComponentManager;
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/**
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* Abstract base class for component observers.
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*/
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class ComponentObserver
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{
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public:
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/**
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* Creates a component observer.
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*
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* @param componentManager Specifies the component manager with which to associate this component observer.
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*/
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ComponentObserver(ComponentManager* componentManager);
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/**
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* Destroys a component observer.
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*/
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virtual ~ComponentObserver();
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protected:
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ComponentManager* componentManager;
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private:
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friend class ComponentManager;
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/**
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* Called after a component is added to an entity.
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*
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* @param entity Specifies the entity with which the component is associated.
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* @param component Specifies the component added.
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*/
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virtual void componentAdded(EntityID entity, ComponentBase* component) = 0;
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/**
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* Called after a component is removed from an entity.
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*
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* @param entity Specifies the entity with which the component is associated.
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* @param component Specifies the component removed.
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*/
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virtual void componentRemoved(EntityID entity, ComponentBase* component) = 0;
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};
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#endif // COMPONENT_OBSERVER_HPP
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