Entity.h
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Entity.h
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	//
	// Created by Ido Mozes on 20/06/2019.
	//

	#ifndef SDL2_GAME_ENTITY_H
	#define SDL2_GAME_ENTITY_H

	#include <bitset>
	#include <vector>
	#include <memory>
	#include "Component.h"

	constexpr int maxComponents = 64;
	typedef std::size_t EntityId;


	class Entity {
	static EntityId getNewId() {
	static EntityId id_counter = 0;
	return id_counter++;
	}

	bool active = true;
	EntityId id;
	std::bitset<ComponentType::LENGTH> componentsMask;
	std::array<Component *, ComponentType::LENGTH> components;
	public:
	Entity();

	~Entity() = default;

	EntityId getId() { return id; }

	bool isActive() { return active; }

	void destroy() { active = false; }

	bool hasComponents(uint64_t mask) { return (componentsMask.to_ullong() & mask) == mask; }

	template<class T>
	T &getComponent() { return (T ) (components[T::getComponentType()]); }

	template<typename T, typename ... Targs>
	Component &addComponent(Targs &&... args){
	T *c = new T(this, std::forward<Targs>(args)...);
	components[T::getComponentType()] = c;
	componentsMask[T::getComponentType()] = true;
	return *c;
	}
	};

	#endif //SDL2_GAME_ENTITY_H