cpp-game-engine/engine/include/game/engine/game_dispatch.hpp

//
//  game_dispatch.hpp
//  gameutils
//
//  Created by Sam Jaffe on 9/2/16.
//

#pragma once

#include <chrono>
#include <memory>
#include <unordered_map>

#include "game/math/math_fwd.hpp"
#include "vector/vector.hpp"

#include "engine_fwd.hpp"
#include "events.hpp"
#include "game/util/time.hpp"

namespace engine {
  class game_dispatch {
  public:
    game_dispatch();

    void process_key_event(raw_key_t key, bool press);
    void process_mouse_event(math::vec2 click, bool press);

    bool is_running() const { return running; }
    void quit() { running = false; }

  public:
    void update();
    void render();

  private:
    float next_frame();
    tick get_tick();

  private:
    math::vec2 screen_size;
    duration minimum_frame_duration;

    using scene_t = std::shared_ptr<scene>;
    std::unordered_map<scene_id_t, scene_t> scenes;

    bool running = true;
    timestamp current_timestamp;
    struct current_scene_info {
      current_scene_info();
      current_scene_info(scene *);

      scene_t ptr;

      std::string current_scene_id; // metadata
      math::vec2 local_size;        // metadata
      bool is_mouse_event;
      bool is_keyboard_event;
    } curr_scene;
  };
}