Reorganize source files into logical subdirectories

Co-authored-by: Hirek193 <23196899+Hirek193@users.noreply.github.com>

simulation/simulationenvironment.h

@@ -0,0 +1,100 @@
+/*
+This Source Code Form is subject to the
+terms of the Mozilla Public License, v.
+2.0. If a copy of the MPL was not
+distributed with this file, You can
+obtain one at
+http://mozilla.org/MPL/2.0/.
+*/
+
+#pragma once
+
+#include "sky.h"
+#include "sun.h"
+#include "moon.h"
+#include "stars.h"
+#include "skydome.h"
+#include "precipitation.h"
+#include "sound.h"
+
+class opengl_renderer;
+class opengl33_renderer;
+
+// wrapper for environment elements -- sky, sun, stars, clouds etc
+class world_environment {
+
+    friend opengl_renderer;
+    friend opengl33_renderer;
+
+public:
+// methods
+    void init();
+    void update();
+    void update_precipitation();
+    void update_moon();
+    void time( int const Hour = -1, int const Minute = -1, int const Second = -1 );
+    // switches between static and dynamic daylight calculation
+    void on_daylight_change();
+    // calculates current season of the year based on set simulation date
+	void compute_season( int const Yearday );
+    // calculates current weather
+	void compute_weather();
+    // data access
+    inline auto const &
+        sun() const {
+            return m_sun; }
+    inline auto const &
+        moon() const {
+            return m_moon; }
+    inline auto const &
+        light_intensity() const {
+            return m_lightintensity; }
+    inline auto const &
+        skydome() const {
+            return m_skydome; }
+    inline auto &
+        skydome() {
+            return m_skydome; }
+    inline auto const &
+        precipitation() const {
+            return m_precipitation; }
+    inline auto const &
+        wind() const {
+            return m_wind.vector; }
+    inline auto const &
+        wind_azimuth() const {
+            return m_wind.azimuth; }
+
+private:
+// types
+    struct basic_wind {
+        // internal state data
+        float azimuth;
+        float azimuth_change;
+        float velocity;
+        float velocity_change;
+        float change_time;
+        // output
+        glm::vec3 vector;
+    };
+// methods
+    void update_wind();
+// members
+    CSkyDome m_skydome;
+    cStars m_stars;
+    cSun m_sun;
+    cMoon m_moon;
+    float m_lightintensity { 1.f };
+    TSky m_clouds;
+    basic_precipitation m_precipitation;
+    sound_source m_rainsound { sound_placement::external, -1 };
+    basic_wind m_wind;
+};
+
+namespace simulation {
+
+extern world_environment Environment;
+
+} // simulation
+
+//---------------------------------------------------------------------------