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Local time available without the clock instrument

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Compute the local time value inside the TimeManager, so that the
UI doesn’t need to rely on the default clock instrument (which
might not exist) to show correct local time.

Also fix updating of time-offset/time-zone, to be based on distance
travelled instead of elapsed wall-clock time.

(needs an FGData update as well)

Ticket-Id: https://sourceforge.net/p/flightgear/codetickets/2514/
This commit is contained in:
James Turner 2021-01-15 19:55:38 +00:00
parent fb8ef10918
commit 9704c1cc93
2 changed files with 37 additions and 8 deletions
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33
src/Time/TimeManager.cxx
View file

@ -25,7 +25,6 @@
#include "TimeManager.hxx"
#include <simgear/timing/sg_time.hxx>
#include <simgear/structure/event_mgr.hxx>
#include <simgear/misc/sg_path.hxx>
#include <simgear/timing/lowleveltime.h>
#include <simgear/structure/commands.hxx>
@ -84,7 +83,7 @@ void TimeManager::init()
_warp = fgGetNode("/sim/time/warp", true);
_warp->addChangeListener(this);
_maxFrameRate = fgGetNode("/sim/frame-rate-throttle-hz", true);
_localTimeStringNode = fgGetNode("/sim/time/local-time-string", true);
_warpDelta = fgGetNode("/sim/time/warp-delta", true);
SGPath zone(globals->get_fg_root());
@ -93,9 +92,6 @@ void TimeManager::init()
_impl = new SGTime(globals->get_aircraft_position(), zone, _timeOverride->getLongValue());
_warpDelta->setDoubleValue(0.0);
globals->get_event_mgr()->addTask("updateLocalTime", this,
&TimeManager::updateLocalTime, 30*60 );
updateLocalTime();
_impl->update(globals->get_aircraft_position(), _timeOverride->getLongValue(),
@ -180,7 +176,6 @@ void TimeManager::shutdown()
delete _impl;
_impl = NULL;
_inited = false;
globals->get_event_mgr()->removeTask("updateLocalTime");
}
void TimeManager::valueChanged(SGPropertyNode* aProp)
@ -359,11 +354,18 @@ void TimeManager::update(double dt)
_warp->setDoubleValue(_warp->getDoubleValue() + warpOffset);
}
const auto d2 = distSqr(_lastTimeZoneCheckPosition, globals->get_aircraft_position_cart());
const auto oneNmSqr = SG_NM_TO_METER * SG_NM_TO_METER;
if (d2 > oneNmSqr) {
updateLocalTime();
}
_lastClockFreeze = freeze;
_impl->update(globals->get_aircraft_position(),
_timeOverride->getLongValue(),
_warp->getIntValue());
updateLocalTimeString();
computeFrameRate();
}
@ -405,7 +407,26 @@ void TimeManager::throttleUpdateRate()
// periodic time updater wrapper
void TimeManager::updateLocalTime()
{
_lastTimeZoneCheckPosition = globals->get_aircraft_position_cart();
_impl->updateLocal(globals->get_aircraft_position(), globals->get_fg_root() / "Timezone");
// synchronous update, since somebody might need that
updateLocalTimeString();
}
void TimeManager::updateLocalTimeString()
{
time_t cur_time = _impl->get_cur_time();
struct tm* aircraftLocalTime = fgLocaltime(&cur_time, _impl->get_zonename());
static char buf[16];
snprintf(buf, 16, "%.2d:%.2d:%.2d",
aircraftLocalTime->tm_hour,
aircraftLocalTime->tm_min, aircraftLocalTime->tm_sec);
// check against current string to avoid changes all the time
const char* s = _localTimeStringNode->getStringValue();
if (strcmp(s, buf) != 0) {
_localTimeStringNode->setStringValue(buf);
}
}
void TimeManager::initTimeOffset()

10
src/Time/TimeManager.hxx
View file

@ -21,8 +21,9 @@
#ifndef FG_TIME_TIMEMANAGER_HXX
#define FG_TIME_TIMEMANAGER_HXX
#include <simgear/structure/subsystem_mgr.hxx>
#include <simgear/props/props.hxx>
#include <simgear/structure/subsystem_mgr.hxx>
#include <simgear/math/SGVec3.hxx>
// forward decls
class SGTime;
@ -56,6 +57,7 @@ public:
inline double getSteadyClockSec() const { return _steadyClock; }
double getSimSpeedUpFactor() const;
private:
// test class is a friend so we can fake elapsed system time
friend class TimeManagerTests;
@ -73,6 +75,8 @@ private:
void updateLocalTime();
void updateLocalTimeString();
// set up a time offset (aka warp) if one is specified
void initTimeOffset();
@ -97,6 +101,7 @@ private:
SGPropertyNode_ptr _computeDrift;
SGPropertyNode_ptr _frameWait;
SGPropertyNode_ptr _maxFrameRate;
SGPropertyNode_ptr _localTimeStringNode;
bool _lastClockFreeze;
bool _adjustWarpOnUnfreeze;
@ -111,6 +116,9 @@ private:
double _steadyClock;
int _frameCount;
// we update TZ after moving more than a threshold distance
SGVec3d _lastTimeZoneCheckPosition;
SGPropertyNode_ptr _sceneryLoaded;
SGPropertyNode_ptr _modelHz;
SGPropertyNode_ptr _timeDelta, _simTimeDelta;