Globally redesign CMake and project structure

.gitignore

@@ -1,77 +1,7 @@
 # This file is used to ignore files which are generated
 # ----------------------------------------------------------------------------
 
-
+build
 SFML*
-CMake*
-
-*~
-*.autosave
-*.a
-*.core
-*.moc
-*.o
-*.obj
-*.orig
-*.rej
-*.so
-*.so.*
-*_pch.h.cpp
-*_resource.rc
-*.qm
-.#*
-*.*#
-core
-!core/
-tags
-.DS_Store
-.directory
-*.debug
-Makefile*
-*.prl
-*.app
-moc_*.cpp
-ui_*.h
-qrc_*.cpp
-Thumbs.db
-*.res
-*.rc
-/.qmake.cache
-/.qmake.stash
-
-# qtcreator generated files
-*.pro.user*
-
-# xemacs temporary files
-*.flc
-
-# Vim temporary files
-.*.swp
-
-# Visual Studio generated files
-*.ib_pdb_index
-*.idb
-*.ilk
-*.pdb
-*.sln
-*.suo
-*.vcproj
-*vcproj.*.*.user
-*.ncb
-*.sdf
-*.opensdf
-*.vcxproj
-*vcxproj.*
-
-# MinGW generated files
-*.Debug
-*.Release
-
-# Python byte code
-*.pyc
-
-# Binaries
-# --------
-*.dll
-*.exe
+*.user
 

CMakeLists.txt

@@ -6,6 +6,9 @@ set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Werror -Wextra -Wpedantic -g")
 
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_SOURCE_DIR}/build)
+set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_SOURCE_DIR}/build)
+
 set(CMAKE_THREAD_LIBS_INIT "-lpthread")
       SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread")
       set(CMAKE_HAVE_THREADS_LIBRARY 1)
@@ -13,7 +16,7 @@ set(CMAKE_THREAD_LIBS_INIT "-lpthread")
       set(CMAKE_USE_PTHREADS_INIT 1)
       set(THREADS_PREFER_PTHREAD_FLAG ON)
 
-file(GLOB_RECURSE SOURCES "include/*.h" "src/*.cpp" "src/*.h")
+file(GLOB_RECURSE SOURCES "src/main.cpp" "src/application/*.cpp" "src/application/*.h")
 add_executable(project-kyoku ${SOURCES})
 
 option(SFML_BUILT "SFML_BUILT" ON)
@@ -32,3 +35,20 @@ else()
 endif()
 
 include_directories(${SFML_INCL_DIR} ${CMAKE_SOURCE_DIR}/include)
+
+SET(CMAKE_INSTALL_PREFIX /)
+if (EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/modes/classicmode/CMakeLists.txt")
+    add_subdirectory(modes/classicmode)
+    target_include_directories(project-kyoku PRIVATE ${CMAKE_SOURCE_DIR}/modes/classicmode/shared)
+    target_link_libraries(project-kyoku classicmode)
+endif()
+if (EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/tools/CMakeLists.txt")
+    add_subdirectory(tools)
+    target_include_directories(project-kyoku PRIVATE ${CMAKE_SOURCE_DIR}/tools/shared)
+    target_link_libraries(project-kyoku tools)
+endif()
+if (EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/core/CMakeLists.txt")
+    add_subdirectory(core)
+    target_include_directories(project-kyoku PRIVATE ${CMAKE_SOURCE_DIR}/core/shared)
+    target_link_libraries(project-kyoku core)
+endif()

core/CMakeLists.txt

@@ -0,0 +1,14 @@
+cmake_minimum_required(VERSION 2.8.8)
+
+project(core)
+
+set(CMAKE_INCLUDE_CURRENT_DIR ON)
+include_directories(${CMAKE_SOURCE_DIR}/include)
+include_directories(${CMAKE_CURRENT_SOURCE_DIR}/shared)
+
+file(GLOB_RECURSE HEADERS "shared/*.h")
+file(GLOB_RECURSE SOURCES "src/*.cpp")
+
+add_library(core STATIC ${SOURCES} ${HEADERS})
+target_include_directories(core PRIVATE ${CMAKE_SOURCE_DIR}/tools/shared)
+target_link_libraries(core tools)

core/shared/core/game.h

@@ -1,8 +1,7 @@
 #ifndef GAME_H
 #define GAME_H
 
-#include <SFML/Graphics/RenderWindow.hpp>
-#include "game/inputtype.h"
+#include "core/inputtype.h"
 
 class Game
 {

core/shared/core/note.h

@@ -0,0 +1,28 @@
+#pragma once
+
+#include "core/inputtype.h"
+
+class Note
+{
+public:
+    explicit Note(microsec perfect_offset) :
+        _perfect_offset(perfect_offset) {}
+    virtual ~Note() = default;
+
+    virtual bool isActive() const = 0;
+    virtual void update(const microsec& music_offset) = 0;
+    virtual void input(PlayerInput&& inputdata) = 0;
+    virtual void draw() const = 0;
+
+    virtual void putToGame(const microsec& offset) = 0;
+    virtual bool isInGame() const = 0;
+    virtual bool shouldRemove() const = 0;
+
+    const microsec& offset() const noexcept
+    {
+        return _perfect_offset;
+    }
+
+protected:
+    microsec _perfect_offset;
+};

core/shared/core/precisionevaluator.h

@@ -2,6 +2,7 @@
 #define PRECISIONEVALUATOR_H
 
 #include "tools/mathutils.h"
+
 #include <numeric>
 #include <type_traits>
 #include <vector>

core/shared/core/timeline.h

@@ -0,0 +1,188 @@
+#pragma once
+
+#include <vector>
+#include <memory>
+#include <algorithm>
+
+#include "tools/mathutils.h"
+#include "core/note.h"
+
+template <class TNote, class = std::enable_if_t<std::is_base_of<Note, TNote>::value>>
+class Timeline
+{
+public:
+    explicit Timeline() :
+        _current_offset(0)
+    {}
+
+    typedef typename std::vector<TNote*>::const_iterator Iterator;
+
+    void setNotes(const std::vector<TNote*>& notes, const microsec& visibility)
+    {
+        _visibility_offset = visibility;
+        _timeline = std::move(notes);
+
+        _top_note = _timeline.begin();
+        expire(_first_visible_note);
+        expire(_last_visible_note);
+        expire(_active_note);
+
+        fetchVisibleNotes();
+    }
+
+    inline void clear()
+    {
+        for (auto& note : _timeline)
+            delete note;
+
+        _timeline.clear();
+    }
+
+    void update(const microsec& offset)
+    {
+        _current_offset = offset;
+
+        checkCurrentActiveNote();
+        checkForNextActiveNote();
+        updateVisibleSprites(_current_offset);
+    }
+
+    void drawVisibleNotes() const
+    {
+        if (nothingToDraw())
+            return;
+
+        std::for_each(_first_visible_note, _last_visible_note,
+                      [](const auto& note)
+                      {
+                          note->draw();
+                      });
+    }
+
+    void fetchVisibleNotes()
+    {
+        findLastVisibleNote(_current_offset);
+        findFirstVisibleNote();
+    }
+
+    void findLastVisibleNote(const microsec& music_offset)
+    {
+        Iterator note_iterator = _top_note;
+        while (isVisiblyClose(note_iterator, music_offset))
+        {
+            if (nothingToDraw())
+                _first_visible_note = note_iterator;
+
+            auto note = *note_iterator;
+
+            if (!note->isInGame())
+                note->putToGame(music_offset);
+
+            ++note_iterator;
+        }
+
+        _last_visible_note = note_iterator;
+    }
+
+    void findFirstVisibleNote()
+    {
+        if (nothingToDraw())
+            return;
+
+        auto note_iterator = _first_visible_note;
+        while (note_iterator != _last_visible_note)
+        {
+            auto note = *note_iterator;
+            if (note->shouldRemove())
+                ++_first_visible_note;
+
+            ++note_iterator;
+        }
+    }
+
+    inline Iterator getActiveNote() noexcept
+    {
+        return _active_note;
+    }
+
+    inline bool isExpired(const Iterator& iterator) const
+    {
+        return iterator == _timeline.end();
+    }
+
+    inline void expire(Iterator& iterator)
+    {
+        iterator = _timeline.end();
+    }
+
+private:
+    std::vector<microsec> _input_intervals;
+    std::vector<TNote*> _timeline;
+    microsec _visibility_offset;
+    microsec _current_offset;
+
+    void updateVisibleSprites(const microsec& music_offset)
+    {
+        if (nothingToDraw())
+            return;
+
+        std::for_each(_first_visible_note, _last_visible_note,
+                      [&music_offset](const auto& note)
+                      {
+                          note->update(music_offset);
+                      });
+    }
+
+    void checkCurrentActiveNote()
+    {
+        if (isExpired(_active_note))
+            return;
+
+        auto note = *_active_note;
+
+        if (!note->isActive())
+        {
+            expire(_active_note);
+            ++_top_note;
+        }
+    }
+
+    void checkForNextActiveNote()
+    {
+        if (!isExpired(_active_note))
+            return;
+
+        auto top_note = *_top_note;
+        if (top_note->isActive())
+            _active_note = _top_note;
+    }
+
+    inline bool isVisiblyClose(const Iterator& iterator, const microsec& music_offset) const
+    {
+        return ((*iterator)->offset() - _visibility_offset) <= music_offset;
+    }
+
+    inline bool nothingToDraw() const noexcept
+    {
+        return isExpired(_first_visible_note);
+    }
+
+    /* Difference between top and active note is that
+     * top note is the note handling input right now
+     * OR it's the closest note from current music offset
+     * position, not necessarily active. A note stops being top only
+     * after dying or being tapped by player, even if it's already
+     * past her perfect offset.
+     *
+     * Meanwhile active note is the note which is currently handling
+     *     player input for grade.
+     *
+     * An active note is always top note but a top note
+     *    is not always active note.
+     *                                         */
+
+    Iterator _top_note;
+    Iterator _active_note;
+    Iterator _last_visible_note;
+    Iterator _first_visible_note;
+};

include/game/timeline.h

@@ -1,22 +0,0 @@
-#ifndef TIMELINE_H
-#define TIMELINE_H
-
-#include "tools/mathutils.h"
-
-#include <memory>
-#include <vector>
-
-class Note;
-
-class Timeline
-{
-public:
-    virtual ~Timeline() = default;
-
-    virtual void update(const microsec& offset) = 0;
-    virtual void clear() = 0;
-
-    virtual void drawVisibleNotes() const = 0;
-};
-
-#endif // TIMELINE_H

include/tools/music.h

@@ -1,21 +0,0 @@
-#pragma once
-
-#include "tools/mathutils.h"
-#include <string>
-
-class Music
-{
-public:
-    virtual ~Music() = default;
-
-    virtual bool openFromFile(const std::string& filepath) = 0;
-
-    virtual void play() = 0;
-    virtual void pause() = 0;
-    virtual void stop() = 0;
-
-    virtual void setVolume(int volume) = 0;
-
-    virtual void setOffset(const microsec& offset) = 0;
-    virtual microsec fetchOffset() = 0;
-};

modes/classicmode/CMakeLists.txt

@@ -0,0 +1,15 @@
+cmake_minimum_required(VERSION 2.8.8)
+
+project(classicmode)
+
+set(CMAKE_INCLUDE_CURRENT_DIR ON)
+include_directories(${CMAKE_SOURCE_DIR}/shared)
+
+file(GLOB_RECURSE HEADERS "shared/*.h")
+file(GLOB_RECURSE SOURCES "editor/*.h" "editor/*.cpp" "game/*.h" "game/*.cpp" "./classicfactory.cpp")
+
+add_library(classicmode STATIC ${SOURCES} ${HEADERS})
+target_include_directories(classicmode PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include)
+target_include_directories(classicmode PRIVATE ${CMAKE_SOURCE_DIR}/tools/shared)
+target_include_directories(classicmode PRIVATE ${CMAKE_SOURCE_DIR}/core/shared)
+target_link_libraries(classicmode tools core)

modes/classicmode/classicfactory.cpp

@@ -0,0 +1,11 @@
+#include "shared/classicmode/classicfactory.h"
+#include "game/classicgame.h"
+#include "game/classicgraphicsmanager.h"
+#include "tools/music.h"
+
+#include <SFML/Graphics/RenderWindow.hpp>
+
+std::unique_ptr<Game> classic::init(sf::RenderWindow& game_window)
+{
+    return std::make_unique<ClassicGame>(std::make_unique<ClassicGraphicsManager>(game_window), std::make_unique<Music>());
+}

modes/classicmode/game/classicgame.cpp

@@ -1,15 +1,10 @@
 #include "classicgame.h"
-#include "classictimeline.h"
 #include "classicnote.h"
 #include "classicmapcreator.h"
-#include "classicnotemanager.h"
 #include "tools/music.h"
-#include <iostream>
 
 ClassicGame::ClassicGame(std::shared_ptr<ClassicGraphicsManager>&& manager, std::unique_ptr<Music>&& music) :
     _graphics_manager(std::move(manager)),
-    _note_manager(std::make_unique<ClassicNoteManager>(_graphics_manager)),
-    _timeline(std::make_unique<ClassicTimeline>(_note_manager)),
     _music(std::move(music)),
     _is_paused(false)
 {
@@ -66,7 +61,7 @@ void ClassicGame::run()
     _music->openFromFile("METEOR.flac");
     _music->setVolume(10);
     _music->play();
-    _timeline->setNotes(std::move(beatmap.notes), beatmap.visibility_offset);
+    _timeline.setNotes(beatmap.notes, beatmap.visibility_offset);
 }
 
 void ClassicGame::input(PlayerInput&& inputdata)
@@ -97,15 +92,15 @@ void ClassicGame::input(PlayerInput&& inputdata)
             }
         }
 
-        auto note_it = _timeline->getActiveNote();
+        auto note_it = _timeline.getActiveNote();
 
-        if (!_timeline->isExpired(note_it))
+        if (!_timeline.isExpired(note_it))
         {
             auto note = (*note_it);
-            _note_manager->input(note, std::move(inputdata));
+            note->input(std::move(inputdata));
             _slap.play();
 
-            if (note->hold && _note_manager->allElementsPressed(note)) // also check for Type
+            if (note->isHold() && note->allElementsPressed()) // also check for Type
             {
                 _notes_on_hold.emplace_back(note);
                 std::cout << "HOLD initited by " << inputdata.event.key.code << '\n';
@@ -116,11 +111,10 @@ void ClassicGame::input(PlayerInput&& inputdata)
 
     case sf::Event::KeyReleased:
     {
-        const auto& note_manager = _note_manager;
         bool key_match = std::any_of(_notes_on_hold.begin(), _notes_on_hold.end(),
-                         [&note_manager, key=inputdata.event.key.code](const auto& note)
+                         [key=inputdata.event.key.code](const auto& note)
                          {
-                             return note_manager->isPressedAs(note, key);
+                             return note->isPressedAs(key);
                          });
 
         if (key_match)
@@ -136,11 +130,11 @@ void ClassicGame::input(PlayerInput&& inputdata)
 
 void ClassicGame::update()
 {
-    _timeline->update(_music->fetchOffset());
-    _timeline->fetchVisibleNotes();
+    _timeline.update(_music->fetchOffset());
+    _timeline.fetchVisibleNotes();
 }
 
 void ClassicGame::draw() const
 {
-    _timeline->drawVisibleNotes();
+    _timeline.drawVisibleNotes();
 }

modes/classicmode/game/classicgame.h

@@ -3,16 +3,18 @@
 
 #include <map>
 #include <memory>
-#include "game/game.h"
-#include "classicactions.h"
+
 #include <SFML/Audio/SoundBuffer.hpp>
 #include <SFML/Audio/Sound.hpp>
 
+#include "core/game.h"
+#include "core/timeline.h"
+
+#include "classicnote.h"
+#include "classicactions.h"
+
 class Music;
-class ClassicNote;
-class ClassicTimeline;
 class ClassicGraphicsManager;
-class ClassicNoteManager;
 
 class ClassicGame final : public Game
 {
@@ -34,8 +36,7 @@ private:
     std::vector<ClassicNote*> _notes_on_hold;
 
     std::shared_ptr<ClassicGraphicsManager> _graphics_manager;
-    std::shared_ptr<ClassicNoteManager> _note_manager;
-    std::unique_ptr<ClassicTimeline> _timeline;
+    Timeline<ClassicNote> _timeline;
 
     sf::SoundBuffer _slap_buffer;
     sf::Sound _slap;

modes/classicmode/game/classicgraphicsmanager.h

@@ -1,6 +1,6 @@
 #pragma once
 
-#include "game/spritecontainer.h"
+#include "spritecontainer.h"
 #include "classicactions.h"
 #include "classicspritefactory.h"
 

modes/classicmode/game/classicmapcreator.cpp

@@ -35,43 +35,29 @@ Beatmap ClassicMapCreator::createBeatmap(const std::string& filepath) const
 
     while (bpm_iterator < bpm_end)
     {
-        ClassicNote *note = new ClassicNote(
-        {
-            {input_intervals, bpm_iterator},
-            {input_intervals},
-            false,
-            ClassicNoteState::NONE,
-            {
-                ClassicNote::Element
-                {
-                    {x, 390.},
-                    false,
-                    sf::Keyboard::Unknown,
-                    Type::UP,
-                    {},
-                    {sf::Keyboard::W, sf::Keyboard::Up},
-                    {nullptr},
-                    {}
-                }
-            }
-        });
+        ClassicNote::ClassicNoteInitializer init;
+        ClassicNote::ClassicNoteInitializer::Element element;
+        init.intervals = input_intervals;
+        init.perfect_offset = bpm_iterator;
+        init.hold = false;
 
-        note->elements[0].animations[ClassicNoteState::NONE] = nullptr;
-        note->elements[0].animations[ClassicNoteState::FLYING] = std::make_shared<ClassicFlyingAnimationScenario>();
-        note->elements[0].animations[ClassicNoteState::ACTIVE] = note->elements[0].animations[ClassicNoteState::FLYING];
-        note->elements[0].animations[ClassicNoteState::DYING] = std::make_shared<ClassicDyingAnimationScenario>();
-        note->elements[0].animations[ClassicNoteState::DEAD] = nullptr;
+        element.coordinates = {x, 390.};
+        element.falling_curve_interpolation = {};
+        element.keys = {sf::Keyboard::W, sf::Keyboard::Up};
+        element.type = Type::UP;
 
         if (counter == 0)
         {
-            note->hold = true;
-            note->elements[0].available_keys = {sf::Keyboard::D, sf::Keyboard::Right};
-            note->elements[0].type = Type::RIGHT;
+            init.hold = true;
+            element.keys = {sf::Keyboard::D, sf::Keyboard::Right};
+            element.type = Type::RIGHT;
         }
 
         --counter;
 
-        notes.emplace_back(note);
+        init.elements = {element};
+
+        notes.emplace_back(new ClassicNote(std::move(init), _graphics_manager));
 
         bpm_iterator += tempo_interval;
         x += 70;
@@ -82,3 +68,4 @@ Beatmap ClassicMapCreator::createBeatmap(const std::string& filepath) const
 
     return {std::move(notes), note_input_offset * 12};
 }
+

modes/classicmode/game/classicmapcreator.h

@@ -4,6 +4,8 @@
 #include <vector>
 
 #include "tools/mathutils.h"
+#include "core/note.h"
+
 #include "classicgraphicsmanager.h"
 
 struct Beatmap

modes/classicmode/game/classicnote.cpp

@@ -0,0 +1,162 @@
+#include "classicnote.h"
+#include "classicsprite.h"
+#include "classicgraphicsmanager.h"
+
+// Replace with interface by dependency injection
+#include "classicflyinganimationscenario.h"
+#include "classicdyinganimationscenario.h"
+//
+
+ClassicNote::ClassicNote(ClassicNoteInitializer &&init, const std::shared_ptr<ClassicGraphicsManager>& manager) :
+    Note(init.perfect_offset),
+    _evaluator(init.intervals, _perfect_offset),
+    _graphics_manager(manager),
+    _state(State::NONE)
+{
+    _elements.resize(init.elements.size());
+    _isHold = init.hold;
+
+    for (std::size_t i = 0; i < _elements.size(); ++i)
+    {
+        _elements[i].keys = init.elements[i].keys;
+        _elements[i].coordinates = init.elements[i].coordinates;
+        _elements[i].type = init.elements[i].type;
+
+        // Animations will be injected into note.
+        _elements[i].animations[State::NONE] = nullptr;
+        _elements[i].animations[State::FLYING] = std::make_shared<ClassicFlyingAnimationScenario>();
+        _elements[i].animations[State::ACTIVE] = _elements[i].animations[State::FLYING];
+        _elements[i].animations[State::DYING] = std::make_shared<ClassicDyingAnimationScenario>();
+        _elements[i].animations[State::DEAD] = nullptr;
+    }
+}
+
+bool ClassicNote::isActive() const
+{
+    return _state == State::ACTIVE;
+}
+
+void ClassicNote::putToGame(const microsec &music_offset)
+{
+    _state = State::FLYING;
+
+    for (auto& element : _elements)
+    {
+        element.sprite = _graphics_manager->getSprite(element.type);
+        element.sprite->setCoordinates(element.coordinates, 0., 9.);
+        element.animations[_state]->launch(element.sprite, music_offset, offset());
+    }
+}
+
+bool ClassicNote::isInGame() const
+{
+    return _state == State::FLYING
+        || _state == State::ACTIVE
+        || _state == State::DYING;
+}
+
+bool ClassicNote::shouldRemove() const
+{
+    return _state == State::DEAD;
+}
+
+void ClassicNote::update(const microsec& music_offset)
+{
+        switch (_state)
+        {
+        default: return;
+            break;
+
+        case State::FLYING:
+            if (_evaluator.isActive(music_offset))
+                _state = State::ACTIVE;
+            break;
+
+        case State::DYING:
+            if (_elements[0].animations[_state]->isDone())
+                _state = State::DEAD;
+            break;
+
+        case State::ACTIVE:
+            if (!_evaluator.isActive(music_offset))
+            {
+                _state = State::DYING;
+                for (auto& element : _elements)
+                    element.animations[_state]->launch(element.sprite, music_offset, offset());
+            }
+            break;
+        }
+
+        for (auto& element : _elements)
+            if (element.animations[_state])
+                element.animations[_state]->update(music_offset);
+}
+
+void ClassicNote::input(PlayerInput&& inputdata)
+{
+    auto grade = ClassicNote::Grade::BAD;
+
+    bool input_valid = std::any_of(_elements.begin(), _elements.end(),
+                [inputdata=inputdata](auto& element)
+                {
+                    if (element.pressed)
+                        return false;
+
+                    auto key_iterator = std::find(element.keys.begin(), element.keys.end(), inputdata.event.key.code);
+                    bool found_key = key_iterator != element.keys.end();
+                    if (found_key)
+                    {
+                        element.pressed = true;
+                        element.pressed_as = inputdata.event.key.code;
+                    }
+
+                    return found_key;
+                });
+
+    bool all_pressed = allElementsPressed();
+
+    if (all_pressed)
+        grade = _evaluator.calculatePrecision(inputdata.timestamp);
+
+    if (all_pressed || !input_valid)
+    {
+        _state = State::DYING;
+        for (auto& element : _elements)
+            element.animations[_state]->launch(element.sprite, inputdata.timestamp, offset());
+    }
+
+    std::cout << "User input: " << static_cast<int>(grade) << "\n";
+}
+
+void ClassicNote::draw() const
+{
+    for (std::size_t i = 0; i < _elements.size(); ++i)
+    {
+        if (i >= 1)
+            _graphics_manager->drawLine(_elements[i-1].sprite->trailCoordinates(), _elements[i].sprite->trailCoordinates());
+        _graphics_manager->draw(_elements[i].sprite);
+    }
+}
+
+bool ClassicNote::isHold() const
+{
+    return _isHold;
+}
+
+bool ClassicNote::allElementsPressed() const
+{
+    return std::all_of(_elements.begin(), _elements.end(),
+           [](const auto& element)
+           {
+               return element.pressed;
+           });
+}
+
+bool ClassicNote::isPressedAs(sf::Keyboard::Key key) const
+{
+    return std::any_of(_elements.begin(), _elements.end(),
+           [key=key](const auto& element)
+           {
+              return key == element.pressed_as;
+           });
+}

modes/classicmode/game/classicnote.h

@@ -0,0 +1,89 @@
+#pragma once
+
+#include "core/note.h"
+#include "core/precisionevaluator.h"
+#include "classicactions.h"
+
+#include <memory>
+#include <array>
+
+class ClassicSprite;
+class ClassicGraphicsManager;
+class ClassicAnimationScenario;
+
+class ClassicNote : public Note
+{
+public:
+
+    enum class Grade
+    {
+        PERFECT,
+           GOOD,
+            BAD
+    };
+
+    enum State
+    {
+          NONE,
+
+        FLYING,
+        ACTIVE,
+         DYING,
+          DEAD
+    };
+
+    struct ClassicNoteInitializer
+    {
+        std::vector<microsec> intervals;
+        microsec perfect_offset;
+        bool hold;
+
+        struct Element
+        {
+            Type type;
+            Coordinates coordinates;
+            std::vector<Coordinates> falling_curve_interpolation;
+            std::array<sf::Keyboard::Key, 2> keys;
+        };
+
+        std::vector<Element> elements;
+    };
+
+    explicit ClassicNote(ClassicNoteInitializer&& init, const std::shared_ptr<ClassicGraphicsManager>& manager);
+    virtual ~ClassicNote() = default;
+
+    virtual bool isActive() const override;
+    virtual void update(const microsec &music_offset) override;
+    virtual void input(PlayerInput&& inputdata) override;
+    virtual void putToGame(const microsec &music_offset) override;
+    virtual bool isInGame() const override;
+    virtual bool shouldRemove() const override;
+    virtual void draw() const override;
+
+    bool isHold() const;
+    bool allElementsPressed() const;
+    bool isPressedAs(sf::Keyboard::Key key) const;
+
+private:
+
+    struct NoteElement
+    {
+        std::shared_ptr<ClassicSprite> sprite;
+        std::array<std::shared_ptr<ClassicAnimationScenario>, 5> animations;
+
+        std::array<sf::Keyboard::Key, 2> keys;
+        Coordinates coordinates;                // Each note may consist of several buttons.
+        Type type;                              // For example, ↑ → or ↓ → ←
+                                                // Note Element represents this idea.
+        bool pressed = false;                   // Each ending button in such sequence
+        sf::Keyboard::Key pressed_as;           //                       is an element.
+    };
+
+    std::vector<NoteElement> _elements;
+
+    const PrecisionEvaluator<Grade> _evaluator;
+    const std::shared_ptr<ClassicGraphicsManager> _graphics_manager;
+
+    State _state;
+    bool _isHold;
+};

modes/classicmode/game/classicsprite.h

@@ -1,9 +1,9 @@
 #pragma once
 
 #include "tools/mathutils.h"
-#include "game/sprite.h"
-#include "SFML/Graphics/RectangleShape.hpp"
-#include "SFML/Graphics/Text.hpp"
+#include "sprite.h"
+#include <SFML/Graphics/RectangleShape.hpp>
+#include <SFML/Graphics/Text.hpp>
 
 class ClassicSprite : public Sprite, public sf::Drawable
 {

modes/classicmode/shared/classicmode/classicfactory.h

@@ -0,0 +1,12 @@
+#pragma once
+
+#include <memory>
+
+class Game;
+
+namespace sf { class RenderWindow; }
+
+namespace classic
+{
+    std::unique_ptr<Game> init(sf::RenderWindow &game_window);
+}

src/application/application.cpp

@@ -1,14 +1,12 @@
 #include "application.h"
-#include "game/inputtype.h"
+#include "core/inputtype.h"
 
-#include "classicgame/classicgame.h"
-#include "classicgame/classicgraphicsmanager.h"
+#include "mainmenu.h"
+#include "gamestate.h"
+#include "editor.h"
 
-#include "gui/mainmenu.h"
-#include "gui/gamestate.h"
-#include "gui/editor.h"
-
-#include "tools/musicsfml.h"
+#include "tools/music.h"
+#include "classicmode/classicfactory.h"
 
 #include <iostream>
 
@@ -19,7 +17,7 @@ Application::Application() :
 {
     _font_holder.load(Fonts::Id::GUI, "SourceCodePro-Regular.ttf");
 
-    _game = std::make_unique<ClassicGame>(std::make_unique<ClassicGraphicsManager>(_game_window), std::make_unique<MusicSFML>());
+    _game = classic::init(_game_window);
 
     _game_window.setFramerateLimit(60);
     _game_window.setKeyRepeatEnabled(false);
@@ -36,7 +34,7 @@ Application::Application() :
 
     const auto main_menu = std::make_shared<MainMenu>(_game_window, std::move(callbacks), _font_holder);
     const auto game_state = std::make_shared<GameState>(_game_window, _game, GameState::Callbacks());
-    const auto editor = std::make_shared<Editor>(_game_window, std::move(editor_callbacks), std::make_unique<MusicSFML>(), _font_holder);
+    const auto editor = std::make_shared<Editor>(_game_window, std::move(editor_callbacks), std::make_unique<Music>(), _font_holder);
 
     _states[GUIState::Tag::MAIN_MENU] = main_menu;
     _states[GUIState::Tag::GAME] = game_state;

src/application/application.h

@@ -1,14 +1,18 @@
 #ifndef APPLICATION_H
 #define APPLICATION_H
 
+#include <vector>
 #include <memory>
 #include <array>
+
+#include <SFML/Graphics/RenderWindow.hpp>
+#include <SFML/Graphics/Font.hpp>
 #include <SFML/System/Clock.hpp>
 #include <SFML/Window/Keyboard.hpp>
 #include <SFML/Window/Event.hpp>
 
-#include "game/game.h"
-#include "gui/state.h"
+#include "core/game.h"
+#include "state.h"
 
 #include "tools/resourceholder.h"
 
@@ -25,7 +29,6 @@ private:
     std::array<std::shared_ptr<GUIState>, GUIState::Tag::AMOUNT> _states;
     std::vector<std::shared_ptr<GUIState>> _state_stack;
 
-
     sf::RenderWindow _game_window;
     std::shared_ptr<Game> _game;
 

src/application/editor.h

@@ -1,6 +1,6 @@
 #pragma once
 
-#include "gui/state.h"
+#include "state.h"
 #include "tools/music.h"
 #include "tools/resourceholder.h"
 #include <SFML/Graphics/RenderWindow.hpp>

src/application/gamestate.cpp

@@ -2,7 +2,7 @@
 #include "widgets/button.h"
 #include "widgets/group.h"
 
-#include "game/game.h"
+#include "core/game.h"
 
 GameState::GameState(sf::RenderWindow& game_window, const std::shared_ptr<Game>& game,
                      Callbacks&& callbacks) :

src/application/gamestate.h

@@ -1,6 +1,6 @@
 #pragma once
 
-#include "gui/state.h"
+#include "state.h"
 #include <SFML/Graphics/RenderWindow.hpp>
 
 class Group;

src/application/mainmenu.h

@@ -1,6 +1,6 @@
 #pragma once
 
-#include "gui/state.h"
+#include "state.h"
 #include "tools/resourceholder.h"
 #include <SFML/Graphics/RenderWindow.hpp>
 

src/application/widgets/button.cpp

@@ -1,5 +1,6 @@
 #include "button.h"
 #include <iostream>
+
 Button::Button(const std::string &text, const std::shared_ptr<sf::Font>& font, unsigned int font_size) :
     _font(font)
 {

src/classicgame/classicnote.h

@@ -1,56 +0,0 @@
-#pragma once
-
-#include "classicactions.h"
-#include "game/precisionevaluator.h"
-
-#include "SFML/Window/Keyboard.hpp"
-
-#include <memory>
-#include <vector>
-#include <array>
-
-enum class ClassicGrade
-{
-    PERFECT,
-       GOOD,
-        BAD
-};
-
-enum ClassicNoteState
-{
-      NONE,
-
-    FLYING,
-    ACTIVE,
-     DYING,
-      DEAD
-};
-
-class ClassicSprite;
-class ClassicAnimationScenario;
-
-struct ClassicNote
-{
-    PrecisionEvaluator<ClassicGrade> evaluator;
-    std::vector<microsec> intervals;
-    bool hold = false;
-
-    ClassicNoteState state = ClassicNoteState::NONE;
-
-    struct Element
-    {
-        Coordinates coordinates;                // Each note may consist of several buttons.
-                                                // For example, ↑ → or ↓ → ←
-                                                // Note Element represents this idea.
-        bool pressed = false;                   // Each ending button in such sequence
-        sf::Keyboard::Key pressed_as;           //                       is an element.
-
-        Type type = Type::NONE;
-        std::vector<Coordinates> falling_curve_interpolation;
-        std::array<sf::Keyboard::Key, 2> available_keys;
-        std::shared_ptr<ClassicSprite> sprite;
-        std::array<std::shared_ptr<ClassicAnimationScenario>, 5> animations;
-    };
-
-    std::vector<Element> elements;
-};

src/classicgame/classicnotemanager.cpp

@@ -1,141 +0,0 @@
-#include "classicnotemanager.h"
-#include "classicsprite.h"
-#include "classicgraphicsmanager.h"
-
-// Replace with interface by dependency injection
-#include "classicflyinganimationscenario.h"
-#include "classicdyinganimationscenario.h"
-//
-
-
-ClassicNoteManager::ClassicNoteManager(const std::shared_ptr<ClassicGraphicsManager>& manager) :
-    _graphics_manager(manager)
-{}
-
-ClassicNoteManager::~ClassicNoteManager()
-{}
-
-bool ClassicNoteManager::isActive(const ClassicNote* note) const
-{
-    return note->state == ClassicNoteState::ACTIVE;
-}
-
-void ClassicNoteManager::putToGame(ClassicNote* note, const microsec &music_offset)
-{
-    note->state = ClassicNoteState::FLYING;
-
-    for (auto& element : note->elements)
-    {
-        element.sprite = _graphics_manager->getSprite(element.type);
-        element.sprite->setCoordinates(element.coordinates, 0., 9.);
-        element.animations[note->state]->launch(element.sprite, music_offset, note->evaluator.offset());
-    }
-}
-
-bool ClassicNoteManager::isInGame(const ClassicNote* note) const
-{
-    return note->state == ClassicNoteState::FLYING
-        || note->state == ClassicNoteState::ACTIVE
-        || note->state == ClassicNoteState::DYING;
-}
-
-bool ClassicNoteManager::shouldRemove(const ClassicNote* note) const
-{
-    return note->state == ClassicNoteState::DEAD;
-}
-
-void ClassicNoteManager::update(ClassicNote* note, const microsec& music_offset)
-{
-        switch (note->state)
-        {
-        default: return;
-            break;
-
-        case ClassicNoteState::FLYING:
-            if (note->evaluator.isActive(music_offset))
-                note->state = ClassicNoteState::ACTIVE;
-            break;
-
-        case ClassicNoteState::DYING:
-            if (note->elements[0].animations[note->state]->isDone())
-                note->state = ClassicNoteState::DEAD;
-            break;
-
-        case ClassicNoteState::ACTIVE:
-            if (!note->evaluator.isActive(music_offset))
-            {
-                note->state = ClassicNoteState::DYING;
-                for (auto& element : note->elements)
-                    element.animations[note->state]->launch(element.sprite, music_offset, note->evaluator.offset());
-            }
-            break;
-        }
-
-        for (auto& element : note->elements)
-            if (element.animations[note->state])
-                element.animations[note->state]->update(music_offset);
-}
-
-void ClassicNoteManager::input(ClassicNote* note, PlayerInput&& inputdata)
-{ 
-    auto grade = ClassicGrade::BAD;
-
-    bool input_valid = std::any_of(note->elements.begin(), note->elements.end(),
-                [inputdata=inputdata](auto& element)
-                {
-                    if (element.pressed)
-                        return false;
-
-                    auto key_iterator = std::find(element.available_keys.begin(), element.available_keys.end(), inputdata.event.key.code);
-                    bool found_key = key_iterator != element.available_keys.end();
-                    if (found_key)
-                    {
-                        element.pressed = true;
-                        element.pressed_as = inputdata.event.key.code;
-                    }
-
-                    return found_key;
-                });
-
-    bool all_pressed = allElementsPressed(note);
-
-    if (all_pressed)
-        grade = note->evaluator.calculatePrecision(inputdata.timestamp);
-
-    if (all_pressed || !input_valid)
-    {
-        note->state = ClassicNoteState::DYING;
-        for (auto& element : note->elements)
-            element.animations[note->state]->launch(element.sprite, inputdata.timestamp, note->evaluator.offset());
-    }
-
-    std::cout << "User input: " << static_cast<int>(grade) << "\n";
-}
-
-void ClassicNoteManager::draw(const ClassicNote* note) const
-{
-    for (std::size_t i = 0; i < note->elements.size(); ++i)
-    {
-        if (i >= 1)
-            _graphics_manager->drawLine(note->elements[i-1].sprite->trailCoordinates(), note->elements[i].sprite->trailCoordinates());
-        _graphics_manager->draw(note->elements[i].sprite);
-    }
-}
-
-bool ClassicNoteManager::allElementsPressed(const ClassicNote* note) const
-{
-    return std::all_of(note->elements.begin(), note->elements.end(),
-           [](const auto& element)
-           {
-               return element.pressed;
-           });
-}
-
-bool ClassicNoteManager::isPressedAs(const ClassicNote* note, sf::Keyboard::Key key) const
-{
-    return std::any_of(note->elements.begin(), note->elements.end(),
-           [key=key](const auto& element)
-           {
-              return key == element.pressed_as;
-           });
-}

src/classicgame/classicnotemanager.h

@@ -1,28 +0,0 @@
-#pragma once
-
-#include "game/inputtype.h"
-#include "classicnote.h"
-#include <memory>
-
-class ClassicGraphicsManager;
-
-class ClassicNoteManager
-{
-public:
-    explicit ClassicNoteManager(const std::shared_ptr<ClassicGraphicsManager>& manager);
-    ~ClassicNoteManager();
-
-    bool isActive(const ClassicNote* note) const;
-    void update(ClassicNote* note, const microsec &music_offset);
-    void input(ClassicNote* note, PlayerInput&& inputdata);
-    void putToGame(ClassicNote* note, const microsec &music_offset);
-    bool isInGame(const ClassicNote* note) const;
-    bool shouldRemove(const ClassicNote* note) const;
-    void draw(const ClassicNote* note) const;
-
-    bool allElementsPressed(const ClassicNote* note) const;
-    bool isPressedAs(const ClassicNote* note, sf::Keyboard::Key key) const;
-
-private:
-    const std::shared_ptr<ClassicGraphicsManager> _graphics_manager;
-};

src/classicgame/classictimeline.cpp

@@ -1,160 +0,0 @@
-#include "classictimeline.h"
-#include "classicnotemanager.h"
-#include <iostream>
-
-ClassicTimeline::ClassicTimeline(const std::shared_ptr<ClassicNoteManager>& manager) :
-    _note_manager(manager),
-    _current_offset(0)
-{}
-
-void ClassicTimeline::setNotes(std::vector<ClassicNote *> &&notes, const microsec &visibility)
-{
-    _visibility_offset = visibility;
-    _timeline = std::move(notes);
-
-    _top_note = _timeline.begin();
-    expire(_first_visible_note);
-    expire(_last_visible_note);
-    expire(_active_note);
-
-    fetchVisibleNotes();
-}
-
-ClassicTimeline::~ClassicTimeline()
-{
-    clear();
-}
-
-void ClassicTimeline::clear()
-{
-    for (auto& note : _timeline)
-        delete note;
-
-    _timeline.clear();
-}
-
-void ClassicTimeline::update(const microsec& offset)
-{
-    _current_offset = offset;
-
-    checkCurrentActiveNote();
-    checkForNextActiveNote();
-    updateVisibleSprites(_current_offset);
-}
-
-void ClassicTimeline::checkCurrentActiveNote()
-{
-    if (isExpired(_active_note))
-        return;
-
-    auto note = *_active_note;
-
-    if (!_note_manager->isActive(note))
-    {
-        expire(_active_note);
-        ++_top_note;
-    }
-}
-
-void ClassicTimeline::checkForNextActiveNote()
-{
-    if (!isExpired(_active_note))
-        return;
-
-    auto top_note = *_top_note;
-    if (_note_manager->isActive(top_note))
-        _active_note = _top_note;
-}
-
-void ClassicTimeline::updateVisibleSprites(const microsec& music_offset)
-{
-    if (nothingToDraw())
-        return;
-
-    const auto& note_manager = _note_manager;
-    std::for_each(_first_visible_note, _last_visible_note,
-                  [&note_manager, &music_offset](const auto& note)
-                  {
-                      note_manager->update(note, music_offset);
-                  });
-}
-
-ClassicTimeline::Iterator ClassicTimeline::getActiveNote() noexcept
-{
-    return _active_note;
-}
-
-bool ClassicTimeline::isExpired(const Iterator& iterator) const
-{
-    return iterator == _timeline.end();
-}
-
-void ClassicTimeline::expire(Iterator& iterator)
-{
-    iterator = _timeline.end();
-}
-
-bool ClassicTimeline::isVisiblyClose(const Iterator& iterator, const microsec& music_offset) const
-{
-    return ((*iterator)->evaluator.offset() - _visibility_offset) <= music_offset;
-}
-
-void ClassicTimeline::fetchVisibleNotes()
-{
-    findLastVisibleNote(_current_offset);
-    findFirstVisibleNote();
-}
-
-void ClassicTimeline::findLastVisibleNote(const microsec &music_offset)
-{
-    Iterator note_iterator = _top_note;
-    while (isVisiblyClose(note_iterator, music_offset))
-    {
-        if (nothingToDraw())
-            _first_visible_note = note_iterator;
-
-        auto note = *note_iterator;
-
-        if (!_note_manager->isInGame(note))
-            _note_manager->putToGame(note, music_offset);
-
-        ++note_iterator;
-    }
-
-    _last_visible_note = note_iterator;
-}
-
-void ClassicTimeline::findFirstVisibleNote()
-{
-    if (nothingToDraw())
-        return;
-
-    auto note_iterator = _first_visible_note;
-    while (note_iterator != _last_visible_note)
-    {
-        auto note = *note_iterator;
-        if (_note_manager->shouldRemove(note))
-            ++_first_visible_note;
-
-        ++note_iterator;
-    }
-}
-
-bool ClassicTimeline::nothingToDraw() const noexcept
-{
-    return isExpired(_first_visible_note);
-}
-
-void ClassicTimeline::drawVisibleNotes() const
-{
-    if (nothingToDraw())
-        return;
-
-    const auto& note_manager = _note_manager;
-    std::for_each(_first_visible_note, _last_visible_note,
-                  [&note_manager](const auto& note)
-                  {
-                      note_manager->draw(note);
-                  });
-}
-

src/classicgame/classictimeline.h

@@ -1,65 +0,0 @@
-#pragma once
-
-#include "game/timeline.h"
-
-#include <vector>
-#include <memory>
-
-class ClassicNote;
-class ClassicNoteManager;
-
-class ClassicTimeline : public Timeline
-{
-public:
-    explicit ClassicTimeline(const std::shared_ptr<ClassicNoteManager>& manager);
-    virtual ~ClassicTimeline();
-    virtual void update(const microsec& offset) override;
-    virtual void clear() override;
-
-    virtual void drawVisibleNotes() const override;
-
-    void setNotes(std::vector<ClassicNote*>&& notes, const microsec& visibility);
-
-    void fetchVisibleNotes();
-    void findLastVisibleNote(const microsec& music_offset);
-    void findFirstVisibleNote();
-
-    using Iterator = std::vector<ClassicNote*>::const_iterator;
-
-    Iterator getActiveNote() noexcept;
-
-    bool isExpired(const Iterator& iterator) const;
-    inline void expire(Iterator& iterator);
-
-private:
-    std::shared_ptr<ClassicNoteManager> _note_manager;
-    std::vector<microsec> _input_intervals;
-    std::vector<ClassicNote*> _timeline;
-    microsec _visibility_offset;
-    microsec _current_offset;
-
-    void updateVisibleSprites(const microsec& music_offset);
-    void checkCurrentActiveNote();
-    void checkForNextActiveNote();
-    bool isVisiblyClose(const Iterator& iterator, const microsec& music_offset) const;
-    inline bool nothingToDraw() const noexcept;
-
-    /* Difference between top and active note is that
-     * top note is the note handling input right now
-     * OR it's the closest note from current music offset
-     * position, not necessarily active. A note stops being top only
-     * after dying or being tapped by player, even if it's already
-     * past her perfect offset.
-     *
-     * Meanwhile active note is the note which is currently handling
-     *     player input for grade.
-     *
-     * An active note is always top note but a top note
-     *    is not always active note.
-     *                                         */
-
-    Iterator _top_note;
-    Iterator _active_note;
-    Iterator _last_visible_note;
-    Iterator _first_visible_note;
-};

src/main.cpp

@@ -1,4 +1,4 @@
-#include "application.h"
+#include "application/application.h"
 
 int main()
 {

src/tools/musicsfml.h

@@ -1,30 +0,0 @@
-#pragma once
-
-#include "tools/music.h"
-
-#include <SFML/Audio/Music.hpp>
-
-class MusicSFML : public Music
-{
-public:
-    explicit MusicSFML();
-
-    virtual bool openFromFile(const std::string& filepath) override;
-
-    virtual void play() override;
-    virtual void pause() override;
-    virtual void stop() override;
-
-    virtual void setVolume(int volume) override;
-
-    virtual void setOffset(const microsec& offset) override;
-    virtual microsec fetchOffset() override;
-
-private:
-    sf::Music _music;
-    sf::Clock _offset_interpolator;
-    
-    microsec _sfml_music_offset;
-    microsec _previous_frame_offset;
-    microsec _absolute_offset;
-};

tools/CMakeLists.txt

@@ -0,0 +1,12 @@
+cmake_minimum_required(VERSION 2.8.8)
+
+project(tools)
+
+set(CMAKE_INCLUDE_CURRENT_DIR ON)
+include_directories(${CMAKE_SOURCE_DIR}/include)
+include_directories(${CMAKE_CURRENT_SOURCE_DIR}/shared)
+
+file(GLOB_RECURSE HEADERS "shared/*.h" "include/*.h")
+file(GLOB_RECURSE SOURCES "src/*.cpp")
+
+add_library(tools STATIC ${SOURCES} ${HEADERS})

tools/shared/tools/beatutils.h

@@ -1,7 +1,7 @@
 #pragma once
 
 #include <vector>
-#include "mathutils.h"
+#include "tools/mathutils.h"
 
 namespace beat_utils
 {

tools/shared/tools/mathutils.h

@@ -1,9 +1,6 @@
 #pragma once
 
-#include <SFML/System/Clock.hpp>
-
-using microsec = sf::Int64;
-using minute = int;
+using microsec = long long;
 
 struct Coordinates
 {

tools/shared/tools/music.h

@@ -0,0 +1,31 @@
+#pragma once
+
+#include <SFML/Audio/Music.hpp>
+#include <SFML/System/Clock.hpp>
+
+#include "tools/mathutils.h"
+
+class Music
+{
+public:
+    explicit Music();
+
+    bool openFromFile(const std::string& filepath);
+
+    void play();
+    void pause();
+    void stop();
+
+    void setVolume(int volume);
+
+    void setOffset(const microsec& offset);
+    microsec fetchOffset();
+
+private:
+    sf::Music _music;
+    sf::Clock _offset_interpolator;
+    
+    microsec _sfml_music_offset;
+    microsec _previous_frame_offset;
+    microsec _absolute_offset;
+};

tools/src/music.cpp

@@ -1,44 +1,44 @@
-#include "musicsfml.h"
+#include "tools/music.h"
 
-MusicSFML::MusicSFML() :
+Music::Music() :
     _sfml_music_offset(0),
     _previous_frame_offset(0),
     _absolute_offset(0)
 {}
 
-bool MusicSFML::openFromFile(const std::string& filepath)
+bool Music::openFromFile(const std::string& filepath)
 {
     return _music.openFromFile(filepath);
 }
 
-void MusicSFML::play()
+void Music::play()
 {
     _music.play();
     _sfml_music_offset = _offset_interpolator.restart().asMicroseconds();
 }
 
-void MusicSFML::pause()
+void Music::pause()
 {
     _music.pause();
 }
 
-void MusicSFML::stop()
+void Music::stop()
 {
     _music.stop();
 }
 
-void MusicSFML::setVolume(int volume)
+void Music::setVolume(int volume)
 {
     _music.setVolume(volume);
 }
 
-void MusicSFML::setOffset(const microsec& offset)
+void Music::setOffset(const microsec& offset)
 {
     //_previous_frame_offset += (offset - _absolute_offset);
     _music.setPlayingOffset(sf::microseconds(offset));
 }
 
-microsec MusicSFML::fetchOffset()
+microsec Music::fetchOffset()
 {
     if (_music.getStatus() != sf::Music::Status::Playing)
         return _absolute_offset;