Reorganize source files into logical subdirectories

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

simulation/simulationtime.h

@@ -0,0 +1,89 @@
+/*
+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 <string>
+
+#include "winheaders.h"
+
+// wrapper for scenario time
+class scenario_time {
+
+public:
+    scenario_time() {
+        m_time.wHour = 10; m_time.wMinute = 30; }
+    void
+	    init(time_t timestamp = 0);
+    void
+        update( double const Deltatime );
+    inline
+    SYSTEMTIME &
+        data() {
+            return m_time; }
+    inline
+    SYSTEMTIME const &
+        data() const {
+            return m_time; }
+    inline
+    double
+        second() const {
+            return ( m_time.wMilliseconds * 0.001 + m_time.wSecond ); }
+    inline
+    int
+        year_day() const {
+            return m_yearday; }
+    int
+        julian_day() const;
+    inline
+    double
+        zone_bias() const {
+            return m_timezonebias; }
+	void
+	    set_time(int yearday, int minute);
+
+    /** Returns std::string in format: `"mm:ss"`. */
+    operator std::string();
+private:
+    // converts provided time transition date to regular date
+    void
+        convert_transition_time( SYSTEMTIME &Time ) const;
+    // calculates day and month from given day of year
+    void
+        daymonth( WORD &Day, WORD &Month, WORD const Year, WORD const Yearday );
+    // calculates day of year from given date
+    int
+        year_day( int Day, int const Month, int const Year ) const;
+    // calculates day of week for provided date
+    int
+        day_of_week( int const Day, int const Month, int const Year ) const;
+    // calculates day of month for specified weekday of specified month of the year
+    int
+        day_of_month( int const Week, int const Weekday, int const Month, int const Year ) const;
+    // returns number of days between specified days of week
+    int
+        weekdays( int const First, int const Second ) const;
+    // returns true if specified year is a leap year, false otherwise
+    bool
+        is_leap( int const Year ) const;
+
+    SYSTEMTIME m_time;
+    double m_milliseconds{ 0.0 };
+    int m_yearday;
+    char m_monthdaycounts[ 2 ][ 13 ];
+    double m_timezonebias{ 0.0 };
+};
+
+namespace simulation {
+
+extern scenario_time Time;
+
+} // simulation
+
+//---------------------------------------------------------------------------