System.h
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System.h
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	//
	// Created by Ido Mozes on 23/06/2019.
	//

	#ifndef SDL2_GAME_SYSTEM_H
	#define SDL2_GAME_SYSTEM_H
	#include <initializer_list>
	#include <vector>
	#include <cmath>
	#include "Entity.h"
	#include "GameData.h"

	constexpr uint64_t createMask( std::initializer_list<int> types) noexcept {
	uint64_t mask = 0;
	for (int bit : types) {
	mask \|= (uint64_t) pow(2, bit);
	}
	return mask;
	}
	class System{
	public:
	virtual void update(std::vector<std::shared_ptr<Entity>> *entities, GameData & gameData)=0;
	};
	#endif //SDL2_GAME_SYSTEM_H