#pragma once

#include "Engine.h"
#include <vector>

class Bullet {
public:
    void render(PaintDevice& paintDevice);
    void update(const int dt);

    Vector2 m_Position;
    int m_Lag = 0;
};

class Gun {
public:
    Gun();
    std::vector<Bullet> fire();
    void render(PaintDevice& paintDevice);
    void update(const int dt);

    Vector2 m_Position;
    std::vector<Vector2> m_Body;

    int m_CooldownCenter = 0;
    int m_CooldownSide = 0;
};

class Enemy {
public:
    void render(PaintDevice& paintDevice);
    void update(const int dt);
    int m_Lag = 0;
    bool hit(Vector2 point);
    void remove(Vector2 point);
    Vector2 first() const { return m_Enemys.front(); }
    bool empty() const { return m_Enemys.empty(); }
private:
    std::vector<Vector2> m_Enemys;
};

class ExampleGame : public Engine {
public:
    ExampleGame();
private:
    virtual bool end() const { return !m_Enemy.empty() && m_Enemy.first().y() >= m_Height; }
    virtual void on_button_press(const int button);
    virtual void update(const int dt);
    virtual void render(PaintDevice& paintDevice);

    const size_t m_Width = 20;
    const size_t m_Height = 40;
    Gun m_Gun;
    std::vector<Bullet> m_Bullets;
    Enemy m_Enemy;
};