game/tetris/scenes.cpp

#include "scenes.hpp"
#include "config.hpp"
#include "functions.hpp"
#include "global_vars.hpp"
#include "../sdlpp/sdlpp_mouse.hpp"

#ifndef _WIN32
#include <SDL2/SDL_events.h>
#include <SDL2/SDL_mouse.h>
#else
#include "../sdlpp/SDL2/SDL_events.h"
#include "../sdlpp/SDL2/SDL_mouse.h"
#endif
#include <thread>

constexpr uint64_t MAIN_MENU_RESUME = 0;
constexpr uint64_t MAIN_MENU_OPTIONS = 1;
constexpr uint64_t MAIN_MENU_RESTART = 2;
constexpr uint64_t MAIN_MENU_QUIT = 3;

constexpr uint64_t GAME_OVER_RESTART = 0;
constexpr uint64_t GAME_OVER_QUIT = 1;

constexpr uint64_t OPTIONS_MENU_COLOR_SCHEME = 0;
constexpr uint64_t OPTIONS_MENU_SHADOW = 1;
constexpr uint64_t OPTIONS_MENU_3D = 2;
constexpr uint64_t OPTIONS_MENU_SAVE = 3;

// Scene preparation

void addMainSceneItems( SDLPP::Scene &scene,
                        std::shared_ptr< SDLPP::Renderer > &r ) {
    auto bg = std::make_shared< SDLPP::RectangleRender >(
        0, 0, 10, 10, r, colors["background"], true );
    bg->setPermanent();
    bg->setId( BACKGROUND_ID );
    scene.addObject( bg );
#ifdef FEATURE
    auto testcircle = std::make_shared< SDLPP::CircleRender >(
        LEFT_BORDER, 0.2, 0.05, r, "#FF00AA", true );
    testcircle->setAlignment( SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER );
    scene.addObject( testcircle );
#endif

    // create coliders for counting blocks in line
    double posy = 1;
    for ( int i = 0; i < 20; i++ ) {
        posy -= BLOCK_SIZE;
        auto colider = std::make_shared< SDLPP::RectangleRender >(
            LEFT_BORDER, posy, RIGHT_BORDER - LEFT_BORDER, BLOCK_SIZE, r );
        colider->addCollision( SDLPP::RectColider( 0.01, 0.1, 0.98, 0.8 ) );
        colider->setId( COLIDER_ID );
        colider->setStatic();
        colider->setAlignment( SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER );
        scene.addObject( colider );
    }

    // create lines on playing field
    posy = 1;
    for ( int i = 0; i < 20; i++ ) {
        posy -= BLOCK_SIZE;
        auto line = std::make_shared< SDLPP::LineRenderer >(
            LEFT_BORDER, posy, RIGHT_BORDER, posy, r, colors["line"] );
        line->setStatic();
        line->setAlignment( SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER );
        line->setId( LINE_ID );
        scene.addObject( line );
    }

    auto posx = RIGHT_BORDER;
    for ( int i = 0; i < 9; i++ ) {
        posx -= BLOCK_SIZE;
        auto line = std::make_shared< SDLPP::LineRenderer >(
            posx, TOP_BORDER + BLOCK_SIZE, posx, BOTTOM_BORDER, r,
            colors["line"] );
        line->setStatic();
        line->setAlignment( SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER );
        line->setId( LINE_ID );
        scene.addObject( line );
    }

    auto left_barrier = std::make_shared< SDLPP::RectangleRender >(
        LEFT_BORDER - 0.02, 0, 0.02, BOTTOM_BORDER, r, colors["barrier"],
        true );
    left_barrier->setAlignment( SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER );
    left_barrier->setStatic();
    left_barrier->setId( BARRIER_ID );
    scene.addObject( left_barrier );

    auto right_barrier = std::make_shared< SDLPP::RectangleRender >(
        RIGHT_BORDER, 0, 0.02, BOTTOM_BORDER, r, colors["barrier"], true );
    right_barrier->setAlignment( SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER );
    right_barrier->setStatic();
    right_barrier->setId( BARRIER_ID );
    scene.addObject( right_barrier );

    auto bottom_barrier = std::make_shared< SDLPP::RectangleRender >(
        LEFT_BORDER - 0.02, BOTTOM_BORDER, RIGHT_BORDER - LEFT_BORDER + 0.04,
        0.02, r, colors["barrier"], true );
    bottom_barrier->setAlignment( SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER );
    bottom_barrier->setStatic();
    bottom_barrier->setId( BARRIER_ID );
    scene.addObject( bottom_barrier );

    auto tetris = std::make_shared< SDLPP::TextRenderer >(
        0.4, 0, 0.2, 0.1, r, "TETRIS", g_font_config );
    tetris->setAlignment( SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER );
    tetris->setStatic();
    tetris->setId( TEXT_ID );
    scene.addObject( tetris );

    auto next = std::make_shared< SDLPP::TextRenderer >(
        RIGHT_BORDER + 0.1, 0.35, 0.2, 0.1, r, "NEXT", g_font_config,
        SDLPP_TEXT_CENTER );
    next->setAlignment( SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER );
    next->setStatic();
    next->setId( TEXT_ID );
    scene.addObject( next );

    // gameover colider
    auto gameover = std::make_shared< SDLPP::RectangleRender >(
        0.5, 0, 0, TOP_BORDER + BLOCK_SIZE, r );
    auto gameover_collision = SDLPP::RectColider( -1, 0, -1, 0.9 );
    gameover_collision.setInfinite();
    gameover->addCollision( gameover_collision );
    gameover->setId( GAME_OVER );
    gameover->setColiderColor( "FF0000" );
    gameover->setStatic();
    scene.addObject( gameover );

    auto score_text = std::make_shared< SDLPP::TextRenderer >(
        RIGHT_BORDER + 0.1, 0.1, 0.2, 0.1, r, "SCORE", g_font_config,
        SDLPP_TEXT_CENTER );
    score_text->setAlignment( SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER );
    score_text->setStatic();
    score_text->setId( TEXT_ID );
    scene.addObject( score_text );

    auto score_texture = std::make_shared< SDLPP::TextRenderer >(
        RIGHT_BORDER + 0.1, 0.2, 0.2, 0.1, r, "0", g_font_config,
        SDLPP_TEXT_TOP );
    score_texture->setAlignment( SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER );
    score_texture->setStatic();
    score_texture->setId( SCORE_TEXTURE_ID );
    scene.addObject( score_texture );

    auto border = std::make_shared< SDLPP::RectangleRender >(
        LEFT_BORDER - 1, 0, 1, BOTTOM_BORDER, r );
    border->setId( BORDER_LEFT_ID );
    border->setStatic();
    border->setAlignment( SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER );
    border->addCollision( SDLPP::RectColider( 0, 0, 0.99, 1 ) );
    border->setColiderColor( "#FF00FF" );
    scene.addObject( border );

    border = std::make_shared< SDLPP::RectangleRender >( RIGHT_BORDER, 0, 1,
                                                         BOTTOM_BORDER, r );
    border->setId( BORDER_RIGHT_ID );
    border->setStatic();
    border->setAlignment( SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER );
    border->addCollision( SDLPP::RectColider( 0.01, 0, 1, 1 ) );
    border->setColiderColor( "#FF00FF" );
    scene.addObject( border );

    auto floor = std::make_shared< SDLPP::RectangleRender >(
        LEFT_BORDER, BOTTOM_BORDER, RIGHT_BORDER - LEFT_BORDER, 1, r );
    floor->setId( FLOOR_ID );
    floor->setStatic();
    floor->setAlignment( SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER );
    floor->addCollision( SDLPP::RectColider( 0, 0.01, 1, 1 ) );
    floor->setColiderColor( "#00FF00" );
    scene.addObject( floor );
}

void addMenuSceneItems( SDLPP::Scene &scene,
                        std::shared_ptr< SDLPP::Renderer > &r ) {
    auto bg = std::make_shared< SDLPP::RectangleRender >(
        0, 0, 10, 10, r, colors["menu_background"], true );
    bg->setId( MENU_BACKGROUND_ID );
    bg->setPermanent( true );
    scene.addObject( bg );
    auto y = std::make_shared< SDLPP::TextRenderer >( 0.25, 0.1, 0.5, 0.3, r );
    y->setText( "PAUSED", g_font_config );
    y->setId( MENU_TEXT_ID );
    y->setAlignment( SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER );
    scene.addObject( y );
    auto resume =
        std::make_shared< SDLPP::TextRenderer >( 0.4, 0.46, 0.2, 0.08, r );
    resume->setText( "Resume", g_font_config );
    resume->setColor( colors["menu_item_background"] );
    resume->setAlignment( SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER );
    resume->setId( MENU_ITEM_ID );
    resume->addCollision(
        SDLPP::RectColider( { 0, 0 }, { 1, 1 }, MENU_RESUME_ID ) );
    g_menu_options.push_back( resume );
    scene.addObject( resume );
    auto options =
        std::make_shared< SDLPP::TextRenderer >( 0.4, 0.56, 0.2, 0.08, r );
    options->setText( "Options", g_font_config );
    options->setAlignment( SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER );
    options->setId( MENU_ITEM_ID );
    options->addCollision(
        SDLPP::RectColider( { 0, 0 }, { 1, 1 }, MENU_OPTIONS_ID ) );
    g_menu_options.push_back( options );
    scene.addObject( options );
    auto restart =
        std::make_shared< SDLPP::TextRenderer >( 0.4, 0.66, 0.2, 0.08, r );
    restart->setText( "Restart", g_font_config );
    restart->setAlignment( SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER );
    restart->setId( MENU_ITEM_ID );
    restart->addCollision(
        SDLPP::RectColider( { 0, 0 }, { 1, 1 }, MENU_RESTART_ID ) );
    g_menu_options.push_back( restart );
    scene.addObject( restart );
    auto quit =
        std::make_shared< SDLPP::TextRenderer >( 0.35, 0.76, 0.3, 0.08, r );
    quit->setText( "Quit Game", g_font_config );
    quit->setAlignment( SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER );
    quit->setId( MENU_ITEM_ID );
    quit->addCollision(
        SDLPP::RectColider( { 0, 0 }, { 1, 1 }, MENU_QUIT_ID ) );
    g_menu_options.push_back( quit );
    scene.addObject( quit );
    auto mouse =
        std::make_shared< SDLPP::RectangleRender >( 0.01, 0.01, 0.01, 0.01, r );
    mouse->setAlignment( SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER );
    mouse->setId( MENU_MOUSE_ID );
    mouse->addCollision(
        SDLPP::RectColider( { 0, 0 }, { 1, 1 } ) );
    scene.addObject( mouse );
}

void addGameOverSceneItems( SDLPP::Scene &scene,
                            std::shared_ptr< SDLPP::Renderer > &r ) {
    auto bg = std::make_shared< SDLPP::RectangleRender >(
        0, 0, 10, 10, r, colors["menu_background"], true );
    bg->setId( MENU_BACKGROUND_ID );
    bg->setPermanent( true );
    scene.addObject( bg );
    auto y = std::make_shared< SDLPP::TextRenderer >( 0.25, 0.1, 0.5, 0.3, r );
    y->setText( "GAME OVER", g_font_config );
    y->setId( 0 );
    y->setAlignment( SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER );
    scene.addObject( y );
    auto restart =
        std::make_shared< SDLPP::TextRenderer >( 0.4, 0.5, 0.2, 0.1, r );
    restart->setText( "Restart", g_font_config );
    restart->setAlignment( SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER );
    restart->setColor( colors["menu_item_background"] );
    restart->setId( MENU_ITEM_ID );
    g_game_over_options.push_back( restart );
    scene.addObject( restart );
    auto quit =
        std::make_shared< SDLPP::TextRenderer >( 0.35, 0.7, 0.3, 0.1, r );
    quit->setText( "Quit Game", g_font_config );
    quit->setAlignment( SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER );
    quit->setId( MENU_ITEM_ID );
    g_game_over_options.push_back( quit );
    scene.addObject( quit );
}

void addOptionsSceneItems( SDLPP::Scene &scene,
                           std::shared_ptr< SDLPP::Renderer > &r ) {
    auto bg = std::make_shared< SDLPP::RectangleRender >(
        0, 0, 10, 10, r, colors["menu_background"], true );
    bg->setId( MENU_BACKGROUND_ID );
    bg->setPermanent( true );
    scene.addObject( bg );
    auto y = std::make_shared< SDLPP::TextRenderer >( 0.25, 0.1, 0.5, 0.3, r );
    y->setText( "OPTIONS", g_font_config );
    y->setId( 0 );
    y->setAlignment( SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER );
    scene.addObject( y );
    auto color_scheme =
        std::make_shared< SDLPP::TextRenderer >( 0.18, 0.35, 0.64, 0.09, r );
    color_scheme->setText( "Color scheme: " +
                               color_schemes_names[selected_color_scheme],
                           g_font_config );
    color_scheme->setAlignment( SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER );
    color_scheme->setColor( colors["menu_item_background"] );
    color_scheme->setId( MENU_ITEM_ID );
    color_scheme->addCollision(
        SDLPP::RectColider( { 0, 0 }, { 1, 1 }, OPTIONS_COLOR_ID ) );
    g_options_options.push_back( color_scheme );
    scene.addObject( color_scheme );
    auto shadow =
        std::make_shared< SDLPP::TextRenderer >( 0.26, 0.45, 0.48, 0.09, r );
    shadow->setText( "Show shadow: YES", g_font_config );
    shadow->setAlignment( SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER );
    shadow->setId( MENU_ITEM_ID );
    shadow->addCollision(
        SDLPP::RectColider( { 0, 0 }, { 1, 1 }, OPTIONS_SHADOW_ID ) );
    g_options_options.push_back( shadow );
    scene.addObject( shadow );
    auto show3d =
        std::make_shared< SDLPP::TextRenderer >( 0.2, 0.55, 0.6, 0.09, r );
    show3d->setText( "Show block texture: NO", g_font_config );
    show3d->setAlignment( SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER );
    show3d->setId( MENU_ITEM_ID );
    show3d->addCollision(
        SDLPP::RectColider( { 0, 0 }, { 1, 1 }, OPTIONS_3D_ID ) );
    g_options_options.push_back( show3d );
    scene.addObject( show3d );
    auto save =
        std::make_shared< SDLPP::TextRenderer >( 0.42, 0.65, 0.16, 0.09, r );
    save->setText( "SAVE", g_font_config );
    save->setAlignment( SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER );
    save->setId( MENU_ITEM_ID );
    save->addCollision(
        SDLPP::RectColider( { 0, 0 }, { 1, 1 }, OPTIONS_SAVE_ID ) );
    g_options_options.push_back( save );
    scene.addObject( save );
    auto mouse =
        std::make_shared< SDLPP::RectangleRender >( 0.01, 0.01, 0.01, 0.01, r );
    mouse->setAlignment( SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER );
    mouse->setId( MENU_MOUSE_ID );
    mouse->addCollision(
        SDLPP::RectColider( { 0, 0 }, { 1, 1 } ) );
    scene.addObject( mouse );
}

std::shared_ptr< SDLPP::Scene >
prepareMainScene( std::shared_ptr< SDLPP::Renderer > renderer ) {
    auto scene = std::make_shared< SDLPP::Scene >( renderer );
    addMainSceneItems( *scene, renderer );
    return scene;
}

std::shared_ptr< SDLPP::Scene >
prepareMenuScene( std::shared_ptr< SDLPP::Renderer > renderer ) {
    auto scene = std::make_shared< SDLPP::Scene >( renderer );
    addMenuSceneItems( *scene, renderer );
    return scene;
}

std::shared_ptr< SDLPP::Scene >
prepareGameOverScene( std::shared_ptr< SDLPP::Renderer > renderer ) {
    auto scene = std::make_shared< SDLPP::Scene >( renderer );
    addGameOverSceneItems( *scene, renderer );
    return scene;
}

std::shared_ptr< SDLPP::Scene >
prepareOptionsScene( std::shared_ptr< SDLPP::Renderer > renderer ) {
    auto scene = std::make_shared< SDLPP::Scene >( renderer );
    addOptionsSceneItems( *scene, renderer );
    return scene;
}

// Input handling

void handleKeyDownMain( SDL_Keycode key, SDLPP::Scene &scene ) {
    switch ( key ) {
    case SDLK_ESCAPE:
        g_update_scenes.push_back( g_menu_scene );
        g_active_scenes.push_back( g_menu_scene );
        g_input_functions.push_back( menuSceneInput );
#ifdef FEATURE
        pauseBlocks();
#endif
        break;
    case SDLK_LEFT:
    case SDLK_a:
        if ( !g_cur_object )
            break;
        g_cur_object->movePiece( -BLOCK_SIZE, 0 );
        if ( !validPos( scene, g_cur_object ) )
            g_cur_object->movePiece( BLOCK_SIZE, 0 );
        else
            updateShadow( scene );

        g_ticks_till_movement = 2 * TICKS_TILL_MOVE;
        g_cur_object->startMovement();
        g_cur_object->addMovement( -1, 0 );
        break;
    case SDLK_RIGHT:
    case SDLK_d:
        if ( !g_cur_object )
            break;
        g_cur_object->movePiece( BLOCK_SIZE, 0 );
        if ( !validPos( scene, g_cur_object ) )
            g_cur_object->movePiece( -BLOCK_SIZE, 0 );
        else
            updateShadow( scene );

        g_ticks_till_movement = 2 * TICKS_TILL_MOVE;
        g_cur_object->startMovement();
        g_cur_object->addMovement( 1, 0 );
        break;
    case SDLK_DOWN:
    case SDLK_s:
        if ( !g_cur_object )
            break;
        g_ticks_till_descend = 0;
        g_cur_object->startDescend();
        g_cur_object->addMovement( 0, 1 );
        break;
    case SDLK_UP:
    case SDLK_w:
        if ( !g_cur_object )
            break;
        g_cur_object->rotate();
        if ( checkRotation( g_cur_object, scene ) )
            g_cur_shadow->rotate();
        updateShadow( scene );
        break;
    case SDLK_SPACE:
        if ( !g_cur_object )
            break;
        g_cur_object->setPos( g_cur_shadow->getPos() );
        break;
#ifdef DEBUG
    case SDLK_r:
        scene.getRenderer().setRenderColiders(
            !scene.getRenderer().getRenderColiders() );
#endif
    default:
        break;
    }
}

void handleKeyUpMain( SDL_Keycode key ) {
    switch ( key ) {
    case SDLK_DOWN:
    case SDLK_s:
        if ( !g_cur_object )
            break;
        if ( g_cur_object->isDescending() ) {
            g_cur_object->stopDescend();
            g_cur_object->addMovement( 0, -1 );
        }
        break;
    case SDLK_LEFT:
    case SDLK_a:
        if ( !g_cur_object )
            break;
        if ( g_cur_object->isMoving() ) {
            g_cur_object->stopMovement();
            g_cur_object->addMovement( 1, 0 );
        }
        break;
    case SDLK_RIGHT:
    case SDLK_d:
        if ( !g_cur_object )
            break;
        if ( g_cur_object->isMoving() ) {
            g_cur_object->stopDescend();
            g_cur_object->addMovement( -1, 0 );
        }
    default:
        break;
    }
}

void pollEventsMain( SDLPP::Scene &scene ) {
    SDL_Event event;
    while ( SDLPP::getSDLEvent( event ) ) {
        switch ( event.type ) {
        case SDL_QUIT:
            quitGame();
            break;
        case SDL_KEYDOWN:
            if ( !event.key.repeat )
                handleKeyDownMain( event.key.keysym.sym, scene );
            break;
        case SDL_KEYUP:
            handleKeyUpMain( event.key.keysym.sym );
            break;
        case SDL_WINDOWEVENT:
            if ( event.window.event == SDL_WINDOWEVENT_RESIZED ) {
                for ( auto &x : g_active_scenes )
                    g_update_scenes.push_back( x );
                g_update_size = true;
            }
        default:
            break;
        }
    }
}

void mainSceneInput(
    std::shared_ptr< SDLPP::Scene > scene, int base,
    std::vector< std::shared_ptr< SDLPP::RenderObject > > &line_coliders ) {
    std::lock_guard< std::mutex > guard( g_movement_mutex );
    pollEventsMain( *scene );
    if ( g_cur_object ) {
        moveThem( scene, SDL_GetTicks() - base );
        return;
    }
    short lines = 0;
    for ( auto &colider : line_coliders ) {
        auto collisions = scene->getCollisions( *colider, { BRICK_ID } );
        while ( collisions.size() == 10 ) {
            lines += 1;
            for ( auto &col : collisions ) {
                col.second->destroy();
            }
            auto colider_y = colider->getPos().getY();
            for ( auto &elem : scene->getObjects( { BRICK_ID } ) ) {
                auto pos = elem->getPos();
                if ( pos.getY() < colider_y && pos.getX() <= RIGHT_BORDER ) {
                    elem->setPos( pos.getX(), pos.getY() + BLOCK_SIZE );
                }
            }
            using namespace std::chrono_literals;
            g_wait_for_anim = true;
            while ( g_wait_for_anim ) {
                std::this_thread::sleep_for( 0.1s );
            }
            collisions = scene->getCollisions( *colider, { BRICK_ID } );
        }
    }
    if ( lines > 0 ) {
        g_update_score = true;
        switch ( lines ) {
        case 1:
            g_score += 40;
            break;
        case 2:
            g_score += 100;
            break;
        case 3:
            g_score += 300;
            break;
        case 4:
            g_score += 1200;
        default:
            break;
        }
    }
    g_checked_line = true;
}

void handleKeyDownMenu( SDL_Keycode key ) {
    switch ( key ) {
    case SDLK_ESCAPE: {
        g_main_scene->setPrevTicks( SDL_GetTicks() );
        g_active_scenes.pop_back();
        g_input_functions.pop_back();
#ifdef FEATURE
        resumeBlocks();
#endif
    } break;
#ifdef DEBUG
    case SDLK_r:
        g_main_scene->getRenderer().setRenderColiders(
            !g_main_scene->getRenderer().getRenderColiders() );
        break;
#endif
    case SDLK_s:
    case SDLK_DOWN:
        g_menu_options[g_menu_select]->unsetColor();
        g_menu_select++;
        if ( static_cast< size_t >( g_menu_select ) >= g_menu_options.size() )
            g_menu_select = 0;
        g_menu_options[g_menu_select]->setColor(
            colors["menu_item_background"] );
        break;
    case SDLK_w:
    case SDLK_UP:
        g_menu_options[g_menu_select]->unsetColor();
        g_menu_select--;
        if ( g_menu_select < 0 )
            g_menu_select = g_menu_options.size() - 1;
        g_menu_options[g_menu_select]->setColor(
            colors["menu_item_background"] );
        break;
    case SDLK_RETURN:
        switch ( g_menu_select ) {
        case MAIN_MENU_RESUME: {
            g_main_scene->setPrevTicks( SDL_GetTicks() );
            g_active_scenes.pop_back();
            g_input_functions.pop_back();
        } break;
        case MAIN_MENU_OPTIONS:
            g_update_scenes.push_back( g_options_scene );
            g_active_scenes.push_back( g_options_scene );
            g_input_functions.push_back( optionsSceneInput );
            break;
        case MAIN_MENU_RESTART:
            resetGame();
            break;
        case MAIN_MENU_QUIT:
            quitGame();
        default:
            break;
        }
    default:
        break;
    }
}

bool g_mouse_down = false;
int selected_menu_down = -1;
int selected_options_down = -1;

void highlightMenuItem(uint64_t id) {
    g_menu_options[g_menu_select]->unsetColor();
    switch(id) {
        case MENU_RESUME_ID:
            g_menu_select = 0;
            break;
        case MENU_OPTIONS_ID:
            g_menu_select = 1;
            break;
        case MENU_RESTART_ID:
            g_menu_select = 2;
            break;
        case MENU_QUIT_ID:
            g_menu_select = 3;
        default:
            break;
    }
    if(g_mouse_down)
        return;
    g_menu_options[g_menu_select]->setColor(
        colors["menu_item_background"] );
}

void highlightOptionsItem(uint64_t id) {
    g_options_options[g_options_select]->unsetColor();
    switch(id) {
        case OPTIONS_COLOR_ID:
            g_options_select = 0;
            break;
        case OPTIONS_SHADOW_ID:
            g_options_select = 1;
            break;
        case OPTIONS_3D_ID:
            g_options_select = 2;
            break;
        case OPTIONS_SAVE_ID:
            g_options_select = 3;
        default:
            break;
    }
    if(g_mouse_down)
        return;
    g_options_options[g_options_select]->setColor(
        colors["menu_item_background"] );
}

void pollEventsMenu() {
    SDL_Event event;
    while ( SDLPP::getSDLEvent( event ) ) {
        switch ( event.type ) {
        case SDL_QUIT:
            quitGame();
            break;
        case SDL_KEYDOWN:
            if ( !event.key.repeat )
                handleKeyDownMenu( event.key.keysym.sym );
            break;
        case SDL_WINDOWEVENT:
            if ( event.window.event == SDL_WINDOWEVENT_RESIZED ) {
                for ( auto &x : g_active_scenes )
                    g_update_scenes.push_back( x );
                g_update_size = true;
            }
            break;
        case SDL_MOUSEMOTION: {
            auto mouse = g_menu_scene->getObjects({MENU_MOUSE_ID})[0];
            mouse->setPos(SDLPP::Mouse::getMousePositionDouble(g_menu_scene->getRenderer(), SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER));
            auto collisions = g_menu_scene->getCollisions(*mouse);
            if(collisions.size() == 2) {
                for(auto &collision : collisions) {
                    if(collision.second->getId() == MENU_ITEM_ID) {
                        highlightMenuItem(collision.second->getCollisions()[0]->getId());
                    }
                }
            }
            }
            break;
        case SDL_MOUSEBUTTONUP:
            g_mouse_down = false;
            if(selected_menu_down == g_menu_select) {
                handleKeyDownMenu(SDLK_RETURN);
            }
            break;
        case SDL_MOUSEBUTTONDOWN:
            g_mouse_down = true;
            selected_menu_down = g_menu_select;
            break;
        default:
            break;
        }
    }
}

void menuSceneInput(
    std::shared_ptr< SDLPP::Scene > /*UNUSED*/, int /*UNUSED*/,
    std::vector< std::shared_ptr< SDLPP::RenderObject > > & /*UNUSED*/ ) {
    pollEventsMenu();
}

void handleKeyDownGameOver( SDL_Keycode key ) {
    switch ( key ) {
#ifdef DEBUG
    case SDLK_r:
        g_main_scene->getRenderer().setRenderColiders(
            !g_main_scene->getRenderer().getRenderColiders() );
        break;
#endif
    case SDLK_s:
    case SDLK_DOWN:
        g_game_over_options[g_game_over_select]->unsetColor();
        g_game_over_select++;
        if ( static_cast< size_t >( g_game_over_select ) >=
             g_game_over_options.size() )
            g_game_over_select = 0;
        g_game_over_options[g_game_over_select]->setColor(
            colors["menu_item_background"] );
        break;
    case SDLK_w:
    case SDLK_UP:
        g_game_over_options[g_game_over_select]->unsetColor();
        g_game_over_select--;
        if ( g_game_over_select < 0 )
            g_game_over_select = g_game_over_options.size() - 1;
        g_game_over_options[g_game_over_select]->setColor(
            colors["menu_item_background"] );
        break;
    case SDLK_RETURN:
        switch ( g_game_over_select ) {
        case GAME_OVER_RESTART:
#ifdef FEATURE
            resumeBlocks();
#endif
            resetGame();
            break;
        case GAME_OVER_QUIT:
            quitGame();
        default:
            break;
        }
    default:
        break;
    }
}

void pollEventsGameOver() {
    SDL_Event event;
    while ( SDLPP::getSDLEvent( event ) ) {
        switch ( event.type ) {
        case SDL_QUIT:
            quitGame();
            break;
        case SDL_KEYDOWN:
            if ( !event.key.repeat )
                handleKeyDownGameOver( event.key.keysym.sym );
            break;
        case SDL_WINDOWEVENT:
            if ( event.window.event == SDL_WINDOWEVENT_RESIZED ) {
                for ( auto &x : g_active_scenes )
                    g_update_scenes.push_back( x );
                g_update_size = true;
            }
        default:
            break;
        }
    }
}

void gameOverSceneInput(
    std::shared_ptr< SDLPP::Scene > /*UNUSED*/, int /*UNUSED*/,
    std::vector< std::shared_ptr< SDLPP::RenderObject > > & /*UNUSED*/ ) {
    pollEventsGameOver();
}

void saveOptions() {
    if ( g_cur_shadow )
        g_cur_shadow->setHidden( !g_show_shadow );
    g_main_scene->setPrevTicks( SDL_GetTicks() );
}

void handleKeyDownOptions( SDL_Keycode key ) {
    switch ( key ) {
#ifdef DEBUG
    case SDLK_r:
        g_main_scene->getRenderer().setRenderColiders(
            !g_main_scene->getRenderer().getRenderColiders() );
        break;
#endif
    case SDLK_s:
    case SDLK_DOWN:
        g_options_options[g_options_select]->unsetColor();
        g_options_select++;
        if ( static_cast< size_t >( g_options_select ) >=
             g_options_options.size() )
            g_options_select = 0;
        g_options_options[g_options_select]->setColor(
            colors["menu_item_background"] );
        break;
    case SDLK_w:
    case SDLK_UP:
        g_options_options[g_options_select]->unsetColor();
        g_options_select--;
        if ( g_options_select < 0 )
            g_options_select = g_options_options.size() - 1;
        g_options_options[g_options_select]->setColor(
            colors["menu_item_background"] );
        break;
    case SDLK_RIGHT:
    case SDLK_d:
        switch ( g_options_select ) {
        case OPTIONS_MENU_COLOR_SCHEME:
            selected_color_scheme++;
            if ( static_cast< size_t >( selected_color_scheme ) >=
                 color_schemes_names.size() )
                selected_color_scheme = 0;
            static_cast< SDLPP::TextRenderer * >(
                g_options_options[OPTIONS_MENU_COLOR_SCHEME].get() )
                ->changeText( "Color scheme: " +
                              color_schemes_names[selected_color_scheme] );
            g_update_colors = true;
            break;
        case OPTIONS_MENU_SHADOW:
            g_show_shadow = !g_show_shadow;
            static_cast< SDLPP::TextRenderer * >(
                g_options_options[OPTIONS_MENU_SHADOW].get() )
                ->changeText( std::string( "Show shadow: " ) +
                              ( g_show_shadow ? "YES" : "NO" ) );
            g_update_objects.push_back(
                g_options_options[OPTIONS_MENU_SHADOW] );
            break;
        case OPTIONS_MENU_3D:
            g_show_3d = !g_show_3d;
            static_cast< SDLPP::TextRenderer * >(
                g_options_options[OPTIONS_MENU_3D].get() )
                ->changeText( std::string( "Show block texture: " ) +
                              ( g_show_3d ? "YES" : "NO" ) );
            g_update_objects.push_back( g_options_options[OPTIONS_MENU_3D] );
            g_update_3d = true;
        default:
            break;
        }
        break;
    case SDLK_LEFT:
    case SDLK_a:
        switch ( g_options_select ) {
        case OPTIONS_MENU_COLOR_SCHEME:
            if ( selected_color_scheme == 0 )
                selected_color_scheme = color_schemes_names.size();
            selected_color_scheme--;
            static_cast< SDLPP::TextRenderer * >(
                g_options_options[OPTIONS_MENU_COLOR_SCHEME].get() )
                ->changeText( "Color scheme: " +
                              color_schemes_names[selected_color_scheme] );
            g_update_colors = true;
            break;
        case OPTIONS_MENU_SHADOW:
            g_show_shadow = !g_show_shadow;
            static_cast< SDLPP::TextRenderer * >(
                g_options_options[OPTIONS_MENU_SHADOW].get() )
                ->changeText( std::string( "Show shadow: " ) +
                              ( g_show_shadow ? "YES" : "NO" ) );
            g_update_objects.push_back(
                g_options_options[OPTIONS_MENU_SHADOW] );
            break;
        case OPTIONS_MENU_3D:
            g_show_3d = !g_show_3d;
            static_cast< SDLPP::TextRenderer * >(
                g_options_options[OPTIONS_MENU_3D].get() )
                ->changeText( std::string( "Show block texture: " ) +
                              ( g_show_3d ? "YES" : "NO" ) );
            g_update_objects.push_back( g_options_options[OPTIONS_MENU_3D] );
            g_update_3d = true;
        default:
            break;
        }
        break;
    case SDLK_RETURN:
        switch ( g_options_select ) {
        case OPTIONS_MENU_SAVE:
            saveOptions();
            g_active_scenes.pop_back();
            g_input_functions.pop_back();
            break;
        default:
            break;
        }
        break;
    case SDLK_ESCAPE:
        saveOptions();
        g_active_scenes.pop_back();
        g_input_functions.pop_back();
    default:
        break;
    }
}

void pollEventsOptions() {
    SDL_Event event;
    while ( SDLPP::getSDLEvent( event ) ) {
        switch ( event.type ) {
        case SDL_QUIT:
            quitGame();
            break;
        case SDL_KEYDOWN:
            if ( !event.key.repeat )
                handleKeyDownOptions( event.key.keysym.sym );
            break;
        case SDL_WINDOWEVENT:
            if ( event.window.event == SDL_WINDOWEVENT_RESIZED ) {
                for ( auto &x : g_active_scenes )
                    g_update_scenes.push_back( x );
                g_update_size = true;
            }
            break;
        case SDL_MOUSEMOTION: {
            auto mouse = g_options_scene->getObjects({MENU_MOUSE_ID})[0];
            mouse->setPos(SDLPP::Mouse::getMousePositionDouble(g_options_scene->getRenderer(), SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER));
            auto collisions = g_options_scene->getCollisions(*mouse);
            if(collisions.size() == 2) {
                for(auto &collision : collisions) {
                    if(collision.second->getId() == MENU_ITEM_ID) {
                        highlightOptionsItem(collision.second->getCollisions()[0]->getId());
                    }
                }
            }
            }
            break;
        case SDL_MOUSEBUTTONUP:
            g_mouse_down = false;
            if(selected_options_down == g_options_select) {
                handleKeyDownOptions(SDLK_RIGHT);
                handleKeyDownOptions(SDLK_RETURN);
            }
            break;
        case SDL_MOUSEBUTTONDOWN:
            g_mouse_down = true;
            selected_options_down = g_options_select;
            break;
        default:
            break;
        }
    }
}

void optionsSceneInput(
    std::shared_ptr< SDLPP::Scene > /*UNUSED*/, int /*UNUSED*/,
    std::vector< std::shared_ptr< SDLPP::RenderObject > > & /*UNUSED*/ ) {
    pollEventsOptions();
}