Init

.gitignore

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+# This file is used to ignore files which are generated
+# ----------------------------------------------------------------------------
+
+*~
+*.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
+

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.5)
+
+project(project-kyoku LANGUAGES CXX)
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(SOURCES application.cpp main.cpp)
+set(HEADER_FILES application.h)
+
+# STATIC #
+# You need to build SFML from sources with cmake
+set(SFML_LIB_DIR
+    ${CMAKE_SOURCE_DIR}/SFML-2.5.1/lib/libsfml-graphics.so.2.5
+    ${CMAKE_SOURCE_DIR}/SFML-2.5.1/lib/libsfml-system.so.2.5
+    ${CMAKE_SOURCE_DIR}/SFML-2.5.1/lib/libsfml-window.so.2.5)
+set(SFML_INCL_DIR ${CMAKE_SOURCE_DIR}/SFML-2.5.1/include)
+include_directories(${SFML_INCL_DIR})
+add_executable(project-kyoku ${SOURCES} ${HEADER_FILES} )
+target_link_libraries(project-kyoku ${SFML_LIB_DIR})

application.cpp

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+#include "application.h"
+#include <SFML/Graphics/Color.hpp>
+#include <SFML/Window/Event.hpp>
+
+Application::Application() :
+    game_window({1280, 720}, "Test")
+{
+    float x = game_window.getSize().x;
+    float y = game_window.getSize().y;
+    pulse_mask.setSize({x, y});
+    pulse_mask.setOrigin(0.f, 0.f);
+    pulse_mask.setFillColor(sf::Color(255, 0, 0, 0));
+}
+
+void Application::run()
+{
+    game_window.display();
+    timeline.push(5500000);
+    timeline.push(5000000);
+    timeline.push(4500000);
+    timeline.push(4000000);
+    timeline.push(3500000);
+    timeline.push(3000000);
+    timeline.push(2500000);
+    timeline.push(2000000);
+    timeline.push(1500000);
+    timeline.push(1000000);
+    //music.openFromFile("/home/egor/test.flac");
+    //usic.play();
+    music.restart();
+    while (game_window.isOpen())
+    {
+        sf::Event event;
+        while (game_window.pollEvent(event))
+        {
+            if (event.type == sf::Event::Closed)
+                game_window.close();
+        }
+
+        update();
+        draw();
+    }
+}
+
+void Application::update()
+{
+    if (!timeline.empty() && timeline.top() <= music.getElapsedTime().asMicroseconds())
+    {
+        timeline.pop();
+        pulse_mask.setFillColor(sf::Color(255, 0, 0, 255));
+    }
+
+    if (pulse_mask.getFillColor().a > 0)
+    {
+        const auto alpha = pulse_mask.getFillColor().a - 1;
+        pulse_mask.setFillColor(sf::Color(255, 0, 0, alpha));
+    }
+
+}
+
+void Application::draw()
+{
+    game_window.clear();
+    game_window.draw(pulse_mask);
+    game_window.display();
+}

application.h

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+#ifndef APPLICATION_H
+#define APPLICATION_H
+
+#include <SFML/Graphics/RenderWindow.hpp>
+//#include <SFML/Audio/Music.hpp>
+#include <SFML/System/Clock.hpp>
+#include <SFML/Graphics/RectangleShape.hpp>
+
+#include <stack>
+
+class Application
+{
+public:
+    Application();
+    void run();
+    void update();
+    void draw();
+
+private:
+    sf::RenderWindow game_window;
+    sf::Clock music;
+    //sf::Music music;
+    sf::RectangleShape pulse_mask;
+
+    std::stack<sf::Int64> timeline;
+};
+
+#endif // APPLICATION_H

main.cpp

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+#include <iostream>
+#include "application.h"
+
+using namespace std;
+
+int main()
+{
+    Application app;
+    app.run();
+}