Encapsulate note switches into state objects

CMakeLists.txt

@@ -5,7 +5,13 @@ project(project-kyoku LANGUAGES CXX)
 set(CMAKE_CXX_STANDARD 14)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -g")
-file(GLOB SOURCES "src/*.cpp" "src/classicgame/*")
+set(CMAKE_THREAD_LIBS_INIT "-lpthread")
+      SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread")
+      set(CMAKE_HAVE_THREADS_LIBRARY 1)
+      set(CMAKE_USE_WIN32_THREADS_INIT 0)
+      set(CMAKE_USE_PTHREADS_INIT 1)
+      set(THREADS_PREFER_PTHREAD_FLAG ON)
+file(GLOB SOURCES "src/*.cpp" "src/classicgame/*.*" "src/classicgame/classicnotestate/*")
 
 # STATIC #
 # You need to build SFML from sources with cmake

include/note.h

@@ -13,11 +13,14 @@ public:
         _perfect_offset(perfect_offset) {}
     virtual ~Note() = default;
 
-    virtual bool isActive(const microsec& music_offset) const = 0;
+    virtual bool isActive() const = 0;
     virtual void update(const microsec& music_offset) = 0;
     virtual void draw(sf::RenderTarget& target, sf::RenderStates states) const = 0;
 
-    virtual microsec offset() const
+    virtual void putToGame(const microsec &offset) = 0;
+    virtual bool isExpired() const = 0;
+
+    microsec offset() const
     {
         return _perfect_offset;
     }

src/application.cpp

@@ -9,7 +9,7 @@
 const sf::Time TIME_PER_FRAME = sf::seconds(1.f / 90.f);
 
 Application::Application() :
-    _game_window({1280, 720}, "Test", sf::Style::Fullscreen ),
+    _game_window({1280, 720}, "Test", sf::Style::Default ),
     _game(std::make_unique<ClassicGame>())
 {
     _game_window.setFramerateLimit(60);

src/classicgame/classicnote.cpp

@@ -9,14 +9,27 @@ ClassicNote::ClassicNote(const std::vector<microsec>& intervals, microsec perfec
     _coordinates(coord),
     _evaluator(intervals, _perfect_offset),
     _action(action),
-    _state(State::NONE),
     _appearance_time(0),
-    _last_offset(0)
+    _current_state(ClassicNoteState::NONE)
 {}
 
-bool ClassicNote::isActive(const microsec& music_offset) const
+bool ClassicNote::isActive() const
 {
-    return _evaluator.isActive(music_offset);
+    return _states.at(_current_state)->value() == ClassicNoteState::ACTIVE;
+}
+
+void ClassicNote::putToGame(const microsec &offset)
+{
+    _appearance_time = offset;  // To animation manager
+    _trail_path_percent = ((_perfect_offset - _appearance_time) * 0.01);
+
+    _current_state = ClassicNoteState::FLYING;
+    _states.at(_current_state)->onEntering(this);
+}
+
+bool ClassicNote::isExpired() const
+{
+    return _states.at(_current_state)->value() == ClassicNoteState::NONE;
 }
 
 static int getPt( float n1 , float n2 , float perc )
@@ -28,29 +41,20 @@ static int getPt( float n1 , float n2 , float perc )
 
 void ClassicNote::update(const microsec& music_offset)
 {
-    switch (_state)   // States will be objects
+    _states.at(_current_state)->update(this, music_offset);
+    /*switch (_state)   // States will be objects
     {
     case State::DYING:
         _sprite->update();
         if (_sprite->isDead())
-            setState(State::DEAD);
+            setState(State::NONE);
         break;
 
     case State::FLYING:
     {
         float i;
-        if (music_offset != _last_offset)
-        {
-            auto update_time = music_offset - _appearance_time;   // This all will be inside ::update
-            i = update_time / _trail_path_percent * 0.01;      //         of an animation object
-        }
-        else
-        {
-            auto update_time = music_offset + 10000 - _appearance_time;
-            i = update_time / _trail_path_percent * 0.01;
-        }
-
-        _last_offset = music_offset;
+        auto update_time = music_offset - _appearance_time;   // This all will be inside ::update
+        i = update_time / _trail_path_percent * 0.01;      //         of an animation object
 
         float xa = getPt( _coordinates.x + 20.  , _coordinates.x + 90. , i );
         float ya = getPt( _coordinates.y - 600. , _coordinates.y - 150. , i );
@@ -59,13 +63,40 @@ void ClassicNote::update(const microsec& music_offset)
 
         _sprite->update(getPt( xa , xb , i ), getPt( ya , yb , i ));
         if (i >= 1)
+        {
             _sprite->trailFade();
+        }
+
+        if (_evaluator.isActive(music_offset))
+            setState(State::ACTIVE);
+        break;
+    }
+
+    case State::ACTIVE:
+    {
+        float i;
+        auto update_time = music_offset - _appearance_time;   // This all will be inside ::update
+        i = update_time / _trail_path_percent * 0.01;      //         of an animation object
+
+        float xa = getPt( _coordinates.x + 20.  , _coordinates.x + 90. , i );
+        float ya = getPt( _coordinates.y - 600. , _coordinates.y - 150. , i );
+        float xb = getPt( _coordinates.x + 90.  , _coordinates.x , i );
+        float yb = getPt( _coordinates.y - 150. , _coordinates.y , i );
+
+        _sprite->update(getPt( xa , xb , i ), getPt( ya , yb , i ));
+        if (i >= 1)
+        {
+            _sprite->trailFade();
+        }
+
+        if (!_evaluator.isActive(music_offset))
+            setState(State::DYING);
         break;
     }
 
     default:
         break;
-    }
+    } */
 }
 
 void ClassicNote::draw(sf::RenderTarget& target, sf::RenderStates states) const
@@ -80,7 +111,8 @@ auto ClassicNote::input(ClassicInputType&& input_data) -> Grade
     if (input_data == _action)
         grade = _evaluator.calculatePrecision(input_data.timestamp());
 
-    setState(State::DYING);
+    _current_state = ClassicNoteState::DYING;
+    _states.at(_current_state)->onEntering(this);
 
     std::cout << "User input: " << static_cast<int>(grade) << "\n";
 
@@ -92,12 +124,7 @@ Action ClassicNote::action() const
     return _action;
 }
 
-auto ClassicNote::state() const -> State
-{
-    return _state;
-}
-
-void ClassicNote::setState(State next_state)
+/*void ClassicNote::setState(State next_state)
 {
     switch (next_state)   // States will be objects
     {
@@ -118,24 +145,16 @@ void ClassicNote::setState(State next_state)
     }
 
     _state = next_state;
-}
+} */
 
 std::shared_ptr<ClassicSprite> ClassicNote::sprite() const noexcept
 {
     return _sprite;
 }
 
-void ClassicNote::saveAppearanceTime(const microsec &offset)
-{
-    _appearance_time = offset;
-    _trail_path_percent = ((_perfect_offset - _appearance_time) * 0.01);
-}
-
 void ClassicNote::setSprite(const std::shared_ptr<ClassicSprite>& sprite) noexcept
 {
     _sprite = sprite;
-    if (_sprite)
-        setState(State::FLYING);
 }
 
 const Coordinates& ClassicNote::getCoordinates() const noexcept

src/classicgame/classicnote.h

@@ -3,8 +3,10 @@
 #include "note.h"
 #include "precisionevaluator.h"
 #include "classicinputtype.h"
+#include "classicnotestate/classicnotestate.h"
 
 #include <memory>
+#include <array>
 
 struct Coordinates
 {
@@ -30,28 +32,19 @@ public:
             BAD
     };
 
-    enum class State
-    {
-          NONE,
-
-        FLYING,
-         DYING,
-          DEAD
-    };
-
     explicit ClassicNote(const std::vector<microsec>& intervals, microsec perfect_offset,
                          Action action, const Coordinates& coord);
     virtual ~ClassicNote() = default;
 
-    virtual bool isActive(const microsec& music_offset) const override;
+    virtual bool isActive() const override;
     virtual void update(const microsec &music_offset) override;
     virtual void draw(sf::RenderTarget& target, sf::RenderStates states) const override;
 
+    virtual void putToGame(const microsec &offset) override;
+    virtual bool isExpired() const override;
+
     Grade input(ClassicInputType&& input_data);
     Action action() const;
-    State state() const;
-
-    void setState(State next_state);
 
     std::shared_ptr<ClassicSprite> sprite() const noexcept;
     void saveAppearanceTime(const microsec& offset);
@@ -62,10 +55,11 @@ private:
     const Coordinates _coordinates;
     const PrecisionEvaluator<Grade> _evaluator;
     const Action _action;
-    State _state;
 
     std::shared_ptr<ClassicSprite> _sprite;
     microsec _appearance_time;
-    microsec _last_offset;
     float _trail_path_percent; //100% for sprite falling trajectory
+
+    std::array<std::shared_ptr<ClassicNoteState>, ClassicNoteState::COUNT> _states;
+    ClassicNoteState::Value _current_state;
 };

src/classicgame/classicnotestate/classicnotestate.h

@@ -0,0 +1,29 @@
+#ifndef CLASSICNOTESTATE_H
+#define CLASSICNOTESTATE_H
+
+#include <SFML/System/Clock.hpp>
+
+using microsec = sf::Int64;
+
+class ClassicNote;
+
+class ClassicNoteState
+{
+public:
+
+    enum Value
+    {
+          NONE,
+         DYING,
+        FLYING,
+        ACTIVE,
+
+        COUNT
+    };
+
+    virtual Value value() const = 0;
+    virtual Value update(const ClassicNote* note, const microsec& offset) = 0;
+    virtual void onEntering(const ClassicNote* note) = 0;
+};
+
+#endif // CLASSICNOTESTATE_H

src/classicgame/classictimeline.cpp

@@ -18,12 +18,10 @@ ClassicTimeline::ClassicTimeline()
     _music.openFromFile(song_filename);
     _music.setVolume(10);
 
-    _timeline.reserve(1000);
-
     microsec starting_beat_offset = 352162;
     int amount_of_beats = 209;
     microsec interval = 1412162;
-    microsec tempo_interval = interval / 4;
+    microsec tempo_interval = interval / 2;
     microsec note_input_offset = 412162 / 3;
     microsec bpm_iterator = starting_beat_offset;
     microsec bpm_end = starting_beat_offset + (interval * amount_of_beats);
@@ -71,34 +69,32 @@ void ClassicTimeline::clear()
 
 void ClassicTimeline::update()
 {
-    const microsec& offset = currentMusicOffset();
-    checkCurrentActiveNote(offset);
-    checkForNextActiveNote(offset);
-    updateVisibleSprites(offset);
+    checkCurrentActiveNote();
+    checkForNextActiveNote();
+    updateVisibleSprites(currentMusicOffset());
 }
 
-void ClassicTimeline::checkCurrentActiveNote(const microsec& music_offset)
+void ClassicTimeline::checkCurrentActiveNote()
 {
     if (isExpired(_active_note))
         return;
 
     auto note = *_active_note;
 
-    if (note->state() != ClassicNote::State::FLYING || !note->isActive(music_offset))
+    if (!note->isActive())
     {
-        note->setState(ClassicNote::State::DYING);
         expire(_active_note);
         ++_top_note;
     }
 }
 
-void ClassicTimeline::checkForNextActiveNote(const microsec& music_offset)
+void ClassicTimeline::checkForNextActiveNote()
 {
     if (!isExpired(_active_note))
         return;
 
     auto top_note = *_top_note;
-    if (top_note->isActive(music_offset))
+    if (top_note->isActive())
         _active_note = _top_note;
 }
 
@@ -158,8 +154,8 @@ void ClassicTimeline::initGraphicsForNewNotes(const std::unique_ptr<ClassicGraph
 
         if (!note->sprite())
         {
-            note->saveAppearanceTime(music_offset);
             graphics_manager->initSprite(note);
+            note->putToGame(music_offset);
         }
 
         ++note_iterator;
@@ -177,9 +173,8 @@ void ClassicTimeline::discardGraphicsForDeadNotes(const std::unique_ptr<ClassicG
     while (note_iterator != _last_visible_note)
     {
         auto note = *note_iterator;
-        if (note->state() == ClassicNote::State::DEAD)
+        if (note->isExpired())
         {
-            note->setState(ClassicNote::State::NONE);
             graphics_manager->resetSprite(note);
 
             ++_first_visible_note;

src/classicgame/classictimeline.h

@@ -28,7 +28,7 @@ public:
 
     Iterator getActiveNote() noexcept;
 
-    inline bool isExpired(const Iterator& iterator) const;
+    bool isExpired(const Iterator& iterator) const;
     inline void expire(Iterator& iterator);
 
 private:
@@ -39,8 +39,8 @@ private:
     sf::Music _music;
 
     void updateVisibleSprites(const microsec& music_offset);
-    void checkCurrentActiveNote(const microsec& music_offset);
-    void checkForNextActiveNote(const microsec& music_offset);
+    void checkCurrentActiveNote();
+    void checkForNextActiveNote();
     bool isVisiblyClose(const Iterator& iterator, const microsec& music_offset) const;
     inline bool nothingToDraw() const noexcept;