+ static const SGPropertyNode *cur_time_override
+ = fgGetNode("/sim/time/cur-time-override", true);
+
+ SGPath zone( globals->get_fg_root() );
+ zone.append( "Timezone" );
+ SGTime *t = new SGTime( longitude->getDoubleValue()
+ * SGD_DEGREES_TO_RADIANS,
+ latitude->getDoubleValue()
+ * SGD_DEGREES_TO_RADIANS,
+ zone.str(),
+ cur_time_override->getLongValue() );
+
+ // Handle potential user specified time offsets
+ time_t cur_time = t->get_cur_time();
+ time_t currGMT = sgTimeGetGMT( gmtime(&cur_time) );
+ time_t systemLocalTime = sgTimeGetGMT( localtime(&cur_time) );
+ time_t aircraftLocalTime =
+ sgTimeGetGMT( fgLocaltime(&cur_time, t->get_zonename() ) );
+
+ // Okay, we now have six possible scenarios
+ int offset = fgGetInt("/sim/startup/time-offset");
+ const string &offset_type = fgGetString("/sim/startup/time-offset-type");
+ if (offset_type == "system-offset") {
+ globals->set_warp( offset );
+ } else if (offset_type == "gmt-offset") {
+ globals->set_warp( offset - (currGMT - systemLocalTime) );
+ } else if (offset_type == "latitude-offset") {
+ globals->set_warp( offset - (aircraftLocalTime - systemLocalTime) );
+ } else if (offset_type == "system") {
+ globals->set_warp( offset - cur_time );
+ } else if (offset_type == "gmt") {
+ globals->set_warp( offset - currGMT );
+ } else if (offset_type == "latitude") {
+ globals->set_warp( offset - (aircraftLocalTime - systemLocalTime) -
+ cur_time );
+ } else {
+ SG_LOG( SG_GENERAL, SG_ALERT,
+ "FG_TIME::Unsupported offset type " << offset_type );
+ exit( -1 );
+ }