#pragma once

#include <SDL/SDL.h>
#include "fmod.hpp"
#include <vector>
#include "audioloop.h"
#include "bufferfish.h"
#include "gravityball.h"
#include "deathball.h"
#include "camera.h"
#include "actor.h"

class Game {
public:
    static Game &get_singleton();

    int main_loop();

    /* audio instance vars */
    /* these are public so that the audio callback can access them */
    double* _audio_buffer;

    FMOD::System* _sound_sys;

    STShaderProgram* _shader;

private:
    Game();
    ~Game();
    Game(const Game &);                  // intentionally undefined
    Game & operator=(const Game &);// intentionally undefined

    void init_gl();
    int init_sdl();
    int init_audio();
    void init_scene();

    /* callbacks */
    void render(double tick_time);
    void update(double tick_time);
    void reshapeFunc(const SDL_ResizeEvent & resize_e);
    int keydown_event(const SDL_KeyboardEvent & keyboard_e);
    int keyup_event(const SDL_KeyboardEvent & keyboard_e);
    void mouse_down_event(const SDL_MouseButtonEvent & button_e);
    void mouse_up_event(const SDL_MouseButtonEvent & button_e);
    void mouse_motion_event(const SDL_MouseMotionEvent & motion_e);

    /* helpers */
    void do_gl_projection();
    void clean_up();

    void draw_death_ball();
    GravityBall* get_closest_ball();

    void garbage_collect();

    /* audio instance vars */
    unsigned int _buffer_size;

    /* graphics instance vars */
    int _window_width;
    int _window_height;
    bool _is_mouse_pressed;

    //TODO make this a linked list
    vector<Actor*> _actors;
    vector<BufferFish*> _buffer_fishes;
    vector<GravityBall*> _gravity_balls;

    Camera* _camera;
    DeathBall* _death_ball;
};