Object.h

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/*
Olympe Engine V2 2025
Nicolas Chereau
nchereau@gmail.com
 
Purpose:
- Class representing a generic object in a game engine, with enumerations for object types and states.
 
*/
#pragma once
#include <string>
#include "system/message.h"
#include <chrono>
#include <cstdint>
 
using namespace std;
 
enum class ObjectType
{
    None = 0,
    Singleton, // e.g. GameEngine, ResourceManager, EventManager, etc.
    Entity, // Player, NPC, Item, etc.
    Component, // Physics, AI, Render, Audio, etc.
    Level, // Game level or environment
    Sector, // Subdivision of a level
    GraphicMap, // Tilemap or similar
    CollisionMap, // Collision data
    Count
};
 
class Object
{
public:
    Object()
    {
        // generate a unique id based on current time in nanoseconds
        using namespace std::chrono;
        auto now = system_clock::now();
        uid = static_cast<uint64_t>(duration_cast<nanoseconds>(now.time_since_epoch()).count());
    }
    virtual ~Object() {};
 
public:
 
    std::string name = "unnamed_object";
    // virtual ObjectType GetObjectType() const { return ObjectType::None; }
 
    virtual void Process() {};
    virtual void Render() {};
    virtual void OnEvent(const Message& msg) {};
 
    inline uint64_t GetUID() const { return uid; }
 
protected:
    // Object UID
    uint64_t uid = 0;
};