#include "sdlpp.hpp"
#include <thread>
#include <chrono>
#include <mutex>
#include <SDL2/SDL2_framerate.h>

#define COLIDER_ID 0x00000001
#define BRICK_ID 0x00000002
#define GAME_OVER 0x00000003

bool pause = false;
int pause_select = 0;
int pause_max = 1;
int ticks_till_next = 1500;
int ticks_till_fall = 500;
int ticks_till_descend = 50;
std::vector< std::shared_ptr< SDLPP::RectangleRender > > pause_options;
std::shared_ptr< SDLPP::TextRenderer > score_texture;
std::shared_ptr< SDLPP::Renderer > active_renderer;
int score = 0;
bool update_score = false;

std::shared_ptr< SDLPP::Font > font;
std::shared_ptr< SDLPP::Scene > active_scene;
std::shared_ptr< SDLPP::Scene > pause_scene;

class TetrisPiece {
public:
    void addPiece( std::shared_ptr< SDLPP::RectangleRender > piece, int x,
                   int y ) {
        pieces.push_back( piece );
        pieces_rel_position.push_back( { 0, 0, 0, 0 } );
        // done this way for SPEEEEEEED
        // left
        pieces_rel_position.back()[0] = ( x < 0 ) * ( -1 ) * x;
        // right
        pieces_rel_position.back()[1] = ( x > 0 ) * x;
        // top
        pieces_rel_position.back()[2] = ( y < 0 ) * ( -1 ) * y;
        // bottom
        pieces_rel_position.back()[3] = ( y > 0 ) * y;
    }
    void rotate() {
        for ( unsigned long i = 0; i < pieces.size(); i++ ) {
            auto &piece = pieces[i];
            auto &positions = pieces_rel_position[i];
            auto position = piece->getPos();
            position.first += positions[0] * 0.04;
            position.first -= positions[1] * 0.04;
            position.second += positions[2] * 0.04;
            position.second -= positions[3] * 0.04;
            auto bottom = positions[3];
            auto top = positions[2];
            positions[3] = positions[1];
            positions[2] = positions[0];
            positions[1] = top;
            positions[0] = bottom;
            position.first -= positions[0] * 0.04;
            position.first += positions[1] * 0.04;
            position.second -= positions[2] * 0.04;
            position.second += positions[3] * 0.04;
            piece->setPos( position.first, position.second );
        }
    }
    std::vector< std::shared_ptr< SDLPP::RectangleRender > > &getObjects() {
        return pieces;
    }
    void setPos( double x, double y ) {
        for ( unsigned long i = 0; i < pieces.size(); i++ ) {
            auto &piece = pieces[i];
            auto pos = piece->getPos();
            piece->setPos( x + pos.first - default_x,
                           y + pos.second - default_y );
        }
        setDefPos( x, y );
    }
    void setDefPos( double x, double y ) {
        default_x = x;
        default_y = y;
    }
    void clear() {
        pieces.clear();
        pieces_rel_position.clear();
    }
    void startDescend() {
        descend = true;
    }
    void stopDescend() {
        descend = false;
    }
    bool isDescending() {
        return descend;
    }

private:
    std::vector< std::vector< int > > pieces_rel_position;
    std::vector< std::shared_ptr< SDLPP::RectangleRender > > pieces;
    double default_x;
    double default_y;
    bool descend = false;
};

std::vector< std::shared_ptr< SDLPP::RectangleRender > > line_coliders;
TetrisPiece cur_object;
TetrisPiece next_object;

void doInput( std::shared_ptr< SDLPP::Scene > scene );
void doInputPause();
bool quit = false;

std::mutex movement_mutex;

std::shared_ptr< SDLPP::RectangleRender >
createTetrisBlock( double x, double y, const std::string &color,
                   const std::string &outline,
                   std::shared_ptr< SDLPP::Renderer > renderer,
                   std::shared_ptr< SDLPP::Scene > scene ) {
    auto ret = std::make_shared< SDLPP::RectangleRender >(
        x, y, 0.04, 0.04, renderer, color, true );
    ret->setOutlineColor( outline );
    ret->addCollision( SDLPP::Rect( 0.1, 0.1, 0.8, 0.8 ) );
    ret->setId( BRICK_ID );
    ret->centerX();
    scene->addObject( ret );
    return ret;
}

TetrisPiece tetrisBrick( std::shared_ptr< SDLPP::Renderer > renderer,
                         std::shared_ptr< SDLPP::Scene > scene ) {
    TetrisPiece retPiece{};
    auto color = "#FF0000";
    auto outline = "#AA0000";
    retPiece.addPiece(
        createTetrisBlock( 0.46, 0.16, color, outline, renderer, scene ), 0,
        0 );
    retPiece.addPiece(
        createTetrisBlock( 0.5, 0.16, color, outline, renderer, scene ), 0, 0 );
    retPiece.addPiece(
        createTetrisBlock( 0.46, 0.20, color, outline, renderer, scene ), 0,
        0 );
    retPiece.addPiece(
        createTetrisBlock( 0.5, 0.20, color, outline, renderer, scene ), 0, 0 );
    retPiece.setDefPos( 0.5, 0.16 );
    return retPiece;
}

TetrisPiece tetrisT( std::shared_ptr< SDLPP::Renderer > renderer,
                     std::shared_ptr< SDLPP::Scene > scene ) {
    TetrisPiece retPiece{};
    auto color = "#00FF00";
    auto outline = "#00AA00";
    retPiece.addPiece(
        createTetrisBlock( 0.46, 0.20, color, outline, renderer, scene ), -1,
        0 );
    retPiece.addPiece(
        createTetrisBlock( 0.5, 0.20, color, outline, renderer, scene ), 0, 0 );
    retPiece.addPiece(
        createTetrisBlock( 0.5, 0.16, color, outline, renderer, scene ), 0,
        -1 );
    retPiece.addPiece(
        createTetrisBlock( 0.54, 0.20, color, outline, renderer, scene ), 1,
        0 );
    retPiece.setDefPos( 0.5, 0.16 );
    return retPiece;
}

TetrisPiece tetrisLRight( std::shared_ptr< SDLPP::Renderer > renderer,
                          std::shared_ptr< SDLPP::Scene > scene ) {
    TetrisPiece retPiece{};
    auto color = "#0000FF";
    auto outline = "#0000AA";
    retPiece.addPiece(
        createTetrisBlock( 0.46, 0.20, color, outline, renderer, scene ), -2,
        0 );
    retPiece.addPiece(
        createTetrisBlock( 0.5, 0.20, color, outline, renderer, scene ), -1,
        0 );
    retPiece.addPiece(
        createTetrisBlock( 0.54, 0.20, color, outline, renderer, scene ), 0,
        0 );
    retPiece.addPiece(
        createTetrisBlock( 0.54, 0.16, color, outline, renderer, scene ), 0,
        -1 );
    retPiece.setDefPos( 0.5, 0.16 );
    return retPiece;
}

TetrisPiece tetrisZRight( std::shared_ptr< SDLPP::Renderer > renderer,
                          std::shared_ptr< SDLPP::Scene > scene ) {
    TetrisPiece retPiece{};
    auto color = "#FF00FF";
    auto outline = "#AA00AA";
    retPiece.addPiece(
        createTetrisBlock( 0.46, 0.20, color, outline, renderer, scene ), -1,
        0 );
    retPiece.addPiece(
        createTetrisBlock( 0.5, 0.20, color, outline, renderer, scene ), 0, 0 );
    retPiece.addPiece(
        createTetrisBlock( 0.5, 0.16, color, outline, renderer, scene ), 0,
        -1 );
    retPiece.addPiece(
        createTetrisBlock( 0.54, 0.16, color, outline, renderer, scene ), 1,
        -1 );
    retPiece.setDefPos( 0.5, 0.16 );
    return retPiece;
}

TetrisPiece tetrisLine( std::shared_ptr< SDLPP::Renderer > renderer,
                        std::shared_ptr< SDLPP::Scene > scene ) {
    TetrisPiece retPiece{};
    auto color = "#FFFF00";
    auto outline = "#AAAA00";
    retPiece.addPiece(
        createTetrisBlock( 0.42, 0.16, color, outline, renderer, scene ), -1,
        0 );
    retPiece.addPiece(
        createTetrisBlock( 0.46, 0.16, color, outline, renderer, scene ), 0,
        0 );
    retPiece.addPiece(
        createTetrisBlock( 0.5, 0.16, color, outline, renderer, scene ), 1, 0 );
    retPiece.addPiece(
        createTetrisBlock( 0.54, 0.16, color, outline, renderer, scene ), 2,
        0 );
    retPiece.setDefPos( 0.5, 0.16 );
    return retPiece;
}

TetrisPiece tetrisLLeft( std::shared_ptr< SDLPP::Renderer > renderer,
                         std::shared_ptr< SDLPP::Scene > scene ) {
    TetrisPiece retPiece{};
    auto color = "#00FFFF";
    auto outline = "#00AAAA";
    retPiece.addPiece(
        createTetrisBlock( 0.46, 0.16, color, outline, renderer, scene ), 0,
        -1 );
    retPiece.addPiece(
        createTetrisBlock( 0.46, 0.20, color, outline, renderer, scene ), 0,
        0 );
    retPiece.addPiece(
        createTetrisBlock( 0.5, 0.20, color, outline, renderer, scene ), 1, 0 );
    retPiece.addPiece(
        createTetrisBlock( 0.54, 0.20, color, outline, renderer, scene ), 2,
        0 );
    retPiece.setDefPos( 0.5, 0.16 );
    return retPiece;
}

TetrisPiece tetrisZLeft( std::shared_ptr< SDLPP::Renderer > renderer,
                         std::shared_ptr< SDLPP::Scene > scene ) {
    TetrisPiece retPiece{};
    auto color = "#FFFFFF";
    auto outline = "#AAAAAA";
    retPiece.addPiece(
        createTetrisBlock( 0.46, 0.16, color, outline, renderer, scene ), -1,
        0 );
    retPiece.addPiece(
        createTetrisBlock( 0.5, 0.16, color, outline, renderer, scene ), 0, 0 );
    retPiece.addPiece(
        createTetrisBlock( 0.5, 0.20, color, outline, renderer, scene ), 0, 1 );
    retPiece.addPiece(
        createTetrisBlock( 0.54, 0.20, color, outline, renderer, scene ), 1,
        1 );
    retPiece.setDefPos( 0.5, 0.16 );
    return retPiece;
}

std::vector< TetrisPiece ( * )( std::shared_ptr< SDLPP::Renderer >,
                                std::shared_ptr< SDLPP::Scene > ) >
    tetrisFunctions = {
        tetrisBrick, tetrisT,     tetrisLRight, tetrisZRight,
        tetrisLine,  tetrisLLeft, tetrisZLeft,
    };

void addStuff( SDLPP::Scene &scene, std::shared_ptr< SDLPP::Renderer > &r ) {
    auto bg = std::make_shared< SDLPP::RectangleRender >( 0, 0, 10, 10, r,
                                                          "#101090FF", true );
    bg->setPermanent( true );
    scene.addObject( bg );
    auto left_barrier = std::make_shared< SDLPP::RectangleRender >(
        0.28, 0, 0.02, 1, r, "#FF000080", true );
    left_barrier->centerX();
    scene.addObject( left_barrier );
    auto right_barrier = std::make_shared< SDLPP::RectangleRender >(
        0.7, 0, 0.02, 1, r, "#FF000080", true );
    right_barrier->centerX();
    scene.addObject( right_barrier );
    auto bottom_barrier = std::make_shared< SDLPP::RectangleRender >(
        0.28, 1, 0.44, 0.02, r, "#FF000080", true );
    bottom_barrier->centerX();
    scene.addObject( bottom_barrier );
    auto tetris = std::make_shared< SDLPP::TextRenderer >(
        0.4, 0, 0.2, 0.1, r, *font, "TETRIS", "FFFFFF", "000000", 5 );
    tetris->centerX();
    scene.addObject( tetris );
    auto next = std::make_shared< SDLPP::TextRenderer >(
        0.8, 0.35, 0.2, 0.1, r, *font, "NEXT", "FFFFFF", "000000", 5,
        SDLPP_TEXT_CENTER );
    next->centerX();
    scene.addObject( next );
    double posy = 1;
    auto gameover =
        std::make_shared< SDLPP::RectangleRender >( 0.5, 0, 0, 0.195, r );
    auto gameover_collision = SDLPP::Rect( -1, 0, -1, 1 );
    gameover_collision.setInfinite();
    gameover->addCollision( gameover_collision );
    gameover->setId( GAME_OVER );
    gameover->setColiderColor( "FF0000" );
    scene.addObject( gameover );
    auto score_text = std::make_shared< SDLPP::TextRenderer >(
        0.8, 0.1, 0.2, 0.1, r, *font, "SCORE", "#FFFFFF", "#000000", 5,
        SDLPP_TEXT_CENTER );
    score_text->centerX();
    scene.addObject( score_text );

    score_texture = std::make_shared< SDLPP::TextRenderer >(
        0.8, 0.2, 0.2, 0.1, r, *font, std::to_string( score ), "FFFFFF",
        "000000", 5, SDLPP_TEXT_TOP );
    score_texture->centerX();
    scene.addObject( score_texture );
    for ( int i = 0; i < 20; i++ ) {
        posy -= 0.04;
        auto colider = std::make_shared< SDLPP::RectangleRender >(
            0.3, posy, 0.04, 0.04, r );
        auto colider_colider = SDLPP::Rect( -1, 0.1, -1, 0.8 );
        colider_colider.setInfinite();
        colider->addCollision( colider_colider );
        colider->setId( COLIDER_ID );
        line_coliders.push_back( colider );
        scene.addObject( colider );
    }
}

void updateScore() {
    score_texture->setText( *font, std::to_string( score ), "#FFFFFF",
                            "#000000", 5 );
}

void addPause( SDLPP::Scene &scene, std::shared_ptr< SDLPP::Renderer > &r ) {
    auto bg = std::make_shared< SDLPP::RectangleRender >( 0, 0, 10, 10, r,
                                                          "#00000080", true );
    bg->setId( 123 );
    bg->setPermanent( true );
    scene.addObject( bg );
    auto y = std::make_shared< SDLPP::TextRenderer >( 0.25, 0.1, 0.5, 0.3, r );
    y->setText( *font, "PAUSED", "#FFFFFF", "#000000", 5 );
    y->setId( 0 );
    y->centerX();
    scene.addObject( y );
    auto resume =
        std::make_shared< SDLPP::TextRenderer >( 0.4, 0.5, 0.2, 0.1, r );
    resume->setText( *font, "Resume", "#FFFFFF", "#000000", 5 );
    resume->setColor( "#FFFFFF40" );
    resume->centerX();
    scene.addObject( resume );
    pause_options.push_back( resume );
    auto quit =
        std::make_shared< SDLPP::TextRenderer >( 0.4, 0.7, 0.2, 0.1, r );
    quit->setText( *font, "Quit Game", "#FFFFFF", "#000000", 5 );
    quit->centerX();
    scene.addObject( quit );
    pause_options.push_back( quit );
}

void quitGame() {
    std::cout << "Quitting!" << std::endl;
    quit = true;
}

void handleKeyDown( SDL_Keycode key, SDLPP::Scene &scene ) {
    bool crash = false;
    std::lock_guard< std::mutex > guard( movement_mutex );
    switch ( key ) {
    case SDLK_ESCAPE: {
        pause = true;
        pause_scene->updateSizeAndPosition();
        std::thread pauseThread( doInputPause );
        pauseThread.detach();
    } break;
    case SDLK_LEFT:
    case SDLK_a:
        for ( auto &x : cur_object.getObjects() ) {
            auto pos = x->getPos();
            // 0.31 because doubles
            if ( pos.first < 0.31 )
                crash = true;
            x->setPos( pos.first - 0.04, pos.second );
        }
        for ( auto &x : cur_object.getObjects() ) {
            auto collisions = scene.getCollisions( *x, { BRICK_ID } );
            if ( collisions.size() > 1 )
                crash = true;
        }
        if ( crash ) {
            for ( auto &x : cur_object.getObjects() ) {
                auto pos = x->getPos();
                x->setPos( pos.first + 0.04, pos.second );
            }
        }
        break;
    case SDLK_RIGHT:
    case SDLK_d:
        for ( auto &x : cur_object.getObjects() ) {
            auto pos = x->getPos();
            // 0.65 because doubles
            if ( pos.first > 0.65 ) {
                crash = true;
            }
            x->setPos( pos.first + 0.04, pos.second );
        }
        for ( auto &x : cur_object.getObjects() ) {
            auto collisions = scene.getCollisions( *x, { BRICK_ID } );
            if ( collisions.size() > 1 ) {
                crash = true;
            }
        }
        if ( crash ) {
            for ( auto &x : cur_object.getObjects() ) {
                auto pos = x->getPos();
                x->setPos( pos.first - 0.04, pos.second );
            }
        }
        break;
    case SDLK_DOWN:
    case SDLK_s:
        cur_object.startDescend();
        break;
    case SDLK_UP:
    case SDLK_w:
        cur_object.rotate();
        break;
    case SDLK_r:
        scene.getRenderer().setRenderColiders(
            !scene.getRenderer().getRenderColiders() );
    default:
        break;
    }
}

void handleKeyUp( SDL_Keycode key ) {
    if ( key == SDLK_DOWN || key == SDLK_s ) {
        cur_object.stopDescend();
    }
}

void handleKeyDownPause( SDL_Keycode key ) {
    switch ( key ) {
    case SDLK_ESCAPE: {
        pause = false;
        active_scene->setPrevTicks( SDL_GetTicks() );
        std::thread inputThread( doInput, active_scene );
        inputThread.detach();
    } break;
    case SDLK_r:
        active_scene->getRenderer().setRenderColiders(
            !active_scene->getRenderer().getRenderColiders() );
        break;
    case SDLK_s:
    case SDLK_DOWN:
        pause_options[pause_select]->unsetColor();
        pause_select++;
        if ( pause_select > pause_max )
            pause_select = 0;
        pause_options[pause_select]->setColor( "FFFFFF40" );
        break;
    case SDLK_w:
    case SDLK_UP:
        pause_options[pause_select]->unsetColor();
        pause_select--;
        if ( pause_select < 0 )
            pause_select = pause_max;
        pause_options[pause_select]->setColor( "FFFFFF40" );
        break;
    case SDLK_RETURN:
        switch ( pause_select ) {
        case 0: {
            pause = false;
            active_scene->setPrevTicks( SDL_GetTicks() );
            std::thread inputThread( doInput, active_scene );
            inputThread.detach();
        } break;
        case 1:
            quitGame();
        default:
            break;
        }
    default:
        break;
    }
}

void pollEvents( SDLPP::Scene &scene ) {
    SDL_Event event;
    while ( SDL_PollEvent( &event ) != 0 ) {
        switch ( event.type ) {
        case SDL_QUIT:
            quitGame();
            break;
        case SDL_KEYDOWN:
            if ( !event.key.repeat )
                handleKeyDown( event.key.keysym.sym, scene );
            break;
        case SDL_KEYUP:
            handleKeyUp( event.key.keysym.sym );
            break;
        case SDL_WINDOWEVENT:
            if ( event.window.event == SDL_WINDOWEVENT_RESIZED )
                scene.updateSizeAndPosition();
        default:
            break;
        }
    }
}

void pollEventsPause() {
    SDL_Event event;
    while ( SDL_PollEvent( &event ) != 0 ) {
        switch ( event.type ) {
        case SDL_QUIT:
            quitGame();
            break;
        case SDL_KEYDOWN:
            if ( !event.key.repeat )
                handleKeyDownPause( event.key.keysym.sym );
            break;
        case SDL_WINDOWEVENT:
            if ( event.window.event == SDL_WINDOWEVENT_RESIZED ) {
                active_scene->updateSizeAndPosition();
                pause_scene->updateSizeAndPosition();
            }
        default:
            break;
        }
    }
}

void moveThem( std::shared_ptr< SDLPP::Scene > scene, int ticks ) {
    std::lock_guard< std::mutex > guard( movement_mutex );
    ticks_till_fall -= ticks;
    if ( cur_object.isDescending() )
        ticks_till_descend -= ticks;
    if ( ticks_till_fall > 0 ) {
        if ( cur_object.isDescending() && ticks_till_descend <= 0 ) {
            ticks_till_descend = 50;
            goto fall;
        }
        return;
    }
    ticks_till_fall = 500;
fall:
    for ( auto &x : cur_object.getObjects() ) {
        auto pos = x->getPos();
        x->setPos( pos.first, pos.second + 0.04 );
    }
    bool fell = false;
    for ( auto &x : cur_object.getObjects() ) {
        auto collisions = scene->getCollisions( *x, { BRICK_ID } );
        if ( collisions.size() > 1 ) {
            fell = true;
            break;
        }
        if ( x->getPos().second >= 1 ) {
            fell = true;
            break;
        }
    }
    if ( fell ) {
        for ( auto &x : cur_object.getObjects() ) {
            auto pos = x->getPos();
            x->setPos( pos.first, pos.second - 0.04 );
        }
        for ( auto &block : cur_object.getObjects() ) {
            if ( scene->getCollisions( *block, { GAME_OVER } ).size() > 0 ) {
                std::cout << "You lost" << std::endl;
                quitGame();
            }
        }
        cur_object.clear();
    }
}

void doInput( std::shared_ptr< SDLPP::Scene > scene ) {
    FPSmanager gFPS;
    SDL_initFramerate( &gFPS );
    SDL_setFramerate( &gFPS, 200 );
    auto base = SDL_GetTicks();
    while ( !quit && !pause ) {
        base = SDL_GetTicks();
        SDL_framerateDelay( &gFPS );
        pollEvents( *scene );
        scene->movement();
        if ( cur_object.getObjects().size() != 0 ) {
            moveThem( scene, SDL_GetTicks() - base );
            continue;
        }
        std::lock_guard< std::mutex > guard( movement_mutex );
        for ( auto &colider : line_coliders ) {
            auto collisions = scene->getCollisions( *colider, { BRICK_ID } );
            while ( collisions.size() == 10 ) {
                score += 10;
                //                updateScore();
                update_score = true;
                for ( auto &col : collisions ) {
                    col->destroy();
                }
                auto colider_y = colider->getPos().second;
                for ( auto &elem : scene->getObjects() ) {
                    if ( elem->getId() != BRICK_ID )
                        continue;
                    auto pos = elem->getPos();
                    if ( pos.second < colider_y ) {
                        elem->setPos( pos.first, pos.second + 0.04 );
                    }
                }
                using namespace std::chrono_literals;
                std::this_thread::sleep_for( 0.1s );
                collisions = scene->getCollisions( *colider, { BRICK_ID } );
            }
        }
    }
}

void doInputPause() {
    FPSmanager gFPS;
    SDL_initFramerate( &gFPS );
    SDL_setFramerate( &gFPS, 200 );
    while ( pause ) {
        SDL_framerateDelay( &gFPS );
        pollEventsPause();
        if ( !pause )
            break;
    }
}

int main() {
    SDLPP::init();
    SDLPP::Window w( "Tetris clone!" );
    auto renderer = std::make_shared< SDLPP::Renderer >( w );
    active_renderer = renderer;
    renderer->setBlendMode( SDL_BLENDMODE_BLEND );
    auto main_scene = std::make_shared< SDLPP::Scene >( renderer );
    active_scene = main_scene;
    font = std::make_shared< SDLPP::Font >( "testfont.ttf", 96 );
    addStuff( *main_scene, renderer );

    pause_scene = std::make_shared< SDLPP::Scene >( renderer );
    addPause( *pause_scene, renderer );

    int base = SDL_GetTicks();
    int frames = 0;

    std::srand( std::time( nullptr ) );
    FPSmanager gFPS;
    SDL_initFramerate( &gFPS );
    SDL_setFramerate( &gFPS, 60 );
    std::thread inputThread( doInput, main_scene );
    inputThread.detach();
    next_object = tetrisFunctions[std::rand() / ( ( RAND_MAX + 1u ) / 7 )](
        renderer, main_scene );
    next_object.setPos( 0.9, 0.5 );
    while ( !quit ) {
        SDL_framerateDelay( &gFPS );
        if ( cur_object.getObjects().size() != 0 ) {
            ticks_till_next = 1500;
        } else {
            ticks_till_next -= SDL_GetTicks() - base;
            if ( ticks_till_next <= 0 && cur_object.getObjects().size() == 0 ) {
                std::lock_guard< std::mutex > guard( movement_mutex );
                cur_object = next_object;
                cur_object.setPos( 0.5, 0.16 );
                next_object =
                    tetrisFunctions[std::rand() / ( ( RAND_MAX + 1u ) / 7 )](
                        renderer, main_scene );
                next_object.setPos( 0.9, 0.5 );
            }
        }
        if ( update_score ) {
            updateScore();
            update_score = false;
        }

        main_scene->renderScene();
        if ( pause ) {
            pause_scene->renderScene( false );
        }
        main_scene->presentScene();
        frames++;
        if ( SDL_GetTicks() - base >= 1000 ) {
            base = SDL_GetTicks();
            std::cout << "FPS: " << frames << std::endl;
            frames = 0;
        }
    }
}