ECS.h

#pragma once
 
#include "Component.h"
#include "Constants.h"
 
class Component;
class Entity;
class Manager;
 
using ComponentID = std::size_t;
using Group = std::size_t;
 
inline ComponentID getNewComponentTypeID()
{
    static ComponentID lastID = 0u;
    return lastID++;
}
 
template <typename T> inline ComponentID getComponentTypeID() noexcept
{
    static ComponentID typeID = getNewComponentTypeID();
    return typeID;
}