#include <SFML/Graphics.hpp>
#include <iostream>
#include <cstdlib>

const float SIZE = 48;
sf::Vector2f WindowSize = {384.f, 768.f};

class Block
{
private:
    sf::RectangleShape hitbox;
    float gravity;
public:
    Block(sf::Vector2f position, float gravity)
    {
        hitbox.setPosition(position);
        hitbox.setSize(sf::Vector2f(SIZE, SIZE));
        hitbox.setFillColor(sf::Color::Blue);
        this->gravity = gravity;
    }
    sf::RectangleShape GetHitbox() { return hitbox; }
    void UpdatePosition()
    {
        hitbox.move(0, gravity);
        if(hitbox.getPosition().y > WindowSize.y - SIZE)
        {
            hitbox.move(0, -SIZE);
        }
    }
    void Collision(sf::FloatRect r)
    {
        if(hitbox.getGlobalBounds().top == r.top)
        {
            std::cout << "collide";
        }
    }
};

int main()
{
    sf::RenderWindow window(sf::VideoMode((unsigned int)WindowSize.x, (unsigned int)WindowSize.y), "Tetris");
    window.setFramerateLimit(10);
    int CurrentFrame = 1;
    float gravity = SIZE;

    std::vector<Block> BlockArray;

    while (window.isOpen())
    {
        sf::Event event;
        while (window.pollEvent(event))
        {
            switch(event.type)
            {
            case sf::Event::Closed:
                window.close();
            }
        }

        if(CurrentFrame % ((int)SIZE / (int)gravity) == 0)
        {
            BlockArray.push_back(Block(sf::Vector2f(rand()%((int)WindowSize.x / (int)SIZE)*SIZE, -SIZE), gravity));
            std::cout << CurrentFrame << std::endl;
        }

        for(int i = 0; i < BlockArray.size(); i++)
        {
            BlockArray[i].UpdatePosition();
            for(int j = 0; j < BlockArray.size(); j++)
            {
                BlockArray[i].Collision(BlockArray[j].GetHitbox().getGlobalBounds());
            }
        }


        window.clear();
        for(int i = 0; i < BlockArray.size(); i++)
        {
            window.draw(BlockArray[i].GetHitbox());
        }

        window.display();

        if(CurrentFrame == 60) CurrentFrame = 1;
        else CurrentFrame++;
    }
    return 0;
}