Core/Calendar: Implement different timezone support for ingame calendar

Closes #8390
Closes #29427

1 files changed, 190 insertions, 0 deletions

diff --git a/src/common/Time/Timer.h b/src/common/Time/Timer.h
new file mode 100644
index 00000000000..e0ecb5b2d13
--- /dev/null
+++ b/src/common/Time/Timer.h
@@ -0,0 +1,190 @@
+/*
+ * This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef TRINITY_TIMER_H
+#define TRINITY_TIMER_H
+
+#include "Define.h"
+#include "Duration.h"
+
+inline TimePoint GetApplicationStartTime()
+{
+    using namespace std::chrono;
+
+    static const steady_clock::time_point ApplicationStartTime = steady_clock::now();
+
+    return ApplicationStartTime;
+}
+
+inline uint32 getMSTime()
+{
+    using namespace std::chrono;
+
+    return uint32(duration_cast<milliseconds>(steady_clock::now() - GetApplicationStartTime()).count());
+}
+
+inline uint32 getMSTimeDiff(uint32 oldMSTime, uint32 newMSTime)
+{
+    // getMSTime() have limited data range and this is case when it overflow in this tick
+    if (oldMSTime > newMSTime)
+        return (0xFFFFFFFF - oldMSTime) + newMSTime;
+    else
+        return newMSTime - oldMSTime;
+}
+
+inline uint32 getMSTimeDiff(uint32 oldMSTime, TimePoint newTime)
+{
+    using namespace std::chrono;
+
+    uint32 newMSTime = uint32(duration_cast<milliseconds>(newTime - GetApplicationStartTime()).count());
+    return getMSTimeDiff(oldMSTime, newMSTime);
+}
+
+inline uint32 GetMSTimeDiffToNow(uint32 oldMSTime)
+{
+    return getMSTimeDiff(oldMSTime, getMSTime());
+}
+
+struct IntervalTimer
+{
+public:
+
+    IntervalTimer()
+        : _interval(0), _current(0)
+    {
+    }
+
+    void Update(time_t diff)
+    {
+        _current += diff;
+        if (_current < 0)
+            _current = 0;
+    }
+
+    bool Passed()
+    {
+        return _current >= _interval;
+    }
+
+    void Reset()
+    {
+        if (_current >= _interval)
+            _current %= _interval;
+    }
+
+    void SetCurrent(time_t current)
+    {
+        _current = current;
+    }
+
+    void SetInterval(time_t interval)
+    {
+        _interval = interval;
+    }
+
+    time_t GetInterval() const
+    {
+        return _interval;
+    }
+
+    time_t GetCurrent() const
+    {
+        return _current;
+    }
+
+private:
+
+    time_t _interval;
+    time_t _current;
+};
+
+struct TimeTracker
+{
+public:
+    TimeTracker(int32 expiry = 0) : _expiryTime(expiry) { }
+    TimeTracker(Milliseconds expiry) : _expiryTime(expiry) { }
+
+    void Update(int32 diff)
+    {
+        Update(Milliseconds(diff));
+    }
+
+    void Update(Milliseconds diff)
+    {
+        _expiryTime -= diff;
+    }
+
+    bool Passed() const
+    {
+        return _expiryTime <= 0s;
+    }
+
+    void Reset(int32 expiry)
+    {
+        Reset(Milliseconds(expiry));
+    }
+
+    void Reset(Milliseconds expiry)
+    {
+        _expiryTime = expiry;
+    }
+
+    Milliseconds GetExpiry() const
+    {
+        return _expiryTime;
+    }
+
+private:
+    Milliseconds _expiryTime;
+};
+
+struct PeriodicTimer
+{
+public:
+
+    PeriodicTimer(int32 period, int32 start_time)
+        : i_period(period), i_expireTime(start_time)
+    {
+    }
+
+    bool Update(const uint32 diff)
+    {
+        if ((i_expireTime -= diff) > 0)
+            return false;
+
+        i_expireTime += i_period > int32(diff) ? i_period : diff;
+        return true;
+    }
+
+    void SetPeriodic(int32 period, int32 start_time)
+    {
+        i_expireTime = start_time;
+        i_period = period;
+    }
+
+    // Tracker interface
+    void TUpdate(int32 diff) { i_expireTime -= diff; }
+    bool TPassed() const { return i_expireTime <= 0; }
+    void TReset(int32 diff, int32 period)  { i_expireTime += period > diff ? period : diff; }
+
+private:
+
+    int32 i_period;
+    int32 i_expireTime;
+};
+
+#endif