// $Id$
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
#include <simgear/debug/logstream.hxx>
+#include <simgear/io/lowlevel.hxx> // endian tests
#include <simgear/io/iochannel.hxx>
+#include <simgear/timing/sg_time.hxx>
#include <FDM/flight.hxx>
+#include <Time/tmp.hxx>
+#include <Main/fg_props.hxx>
+#include <Main/globals.hxx>
#include "native_fdm.hxx"
+// FreeBSD works better with this included last ... (?)
+#if defined(WIN32) && !defined(__CYGWIN__)
+# include <windows.h>
+#else
+# include <netinet/in.h> // htonl() ntohl()
+#endif
+
+
+// The function htond is defined this way due to the way some
+// processors and OSes treat floating point values. Some will raise
+// an exception whenever a "bad" floating point value is loaded into a
+// floating point register. Solaris is notorious for this, but then
+// so is LynxOS on the PowerPC. By translating the data in place,
+// there is no need to load a FP register with the "corruped" floating
+// point value. By doing the BIG_ENDIAN test, I can optimize the
+// routine for big-endian processors so it can be as efficient as
+// possible
+static void htond (double &x)
+{
+ if ( sgIsLittleEndian() ) {
+ int *Double_Overlay;
+ int Holding_Buffer;
+
+ Double_Overlay = (int *) &x;
+ Holding_Buffer = Double_Overlay [0];
+
+ Double_Overlay [0] = htonl (Double_Overlay [1]);
+ Double_Overlay [1] = htonl (Holding_Buffer);
+ } else {
+ return;
+ }
+}
+
FGNativeFDM::FGNativeFDM() {
}
}
-static void global2raw( const FGInterface *global, FGRawFDM *raw ) {
- raw->version = FG_RAW_FDM_VERSION;
+static void global2net( const FGInterface *global, FGNetFDM *net ) {
+ static const SGPropertyNode *visibility
+ = fgGetNode("/environment/visibility-m");
+
+ net->version = FG_NET_FDM_VERSION;
// positions
- raw->longitude = cur_fdm_state->get_Longitude();
- raw->latitude = cur_fdm_state->get_Latitude();
- raw->altitude = cur_fdm_state->get_Altitude();
- raw->phi = cur_fdm_state->get_Phi();
- raw->theta = cur_fdm_state->get_Theta();
- raw->psi = cur_fdm_state->get_Psi();
+ net->longitude = cur_fdm_state->get_Longitude();
+ net->latitude = cur_fdm_state->get_Latitude();
+ net->altitude = cur_fdm_state->get_Altitude() * SG_FEET_TO_METER;
+ net->phi = cur_fdm_state->get_Phi();
+ net->theta = cur_fdm_state->get_Theta();
+ net->psi = cur_fdm_state->get_Psi();
// velocities
- raw->vcas = cur_fdm_state->get_V_calibrated_kts();
- raw->climb_rate = cur_fdm_state->get_Climb_Rate();
+ net->vcas = cur_fdm_state->get_V_calibrated_kts();
+ net->climb_rate = cur_fdm_state->get_Climb_Rate();
+
+ // environment
+ net->cur_time = globals->get_time_params()->get_cur_time();
+ net->warp = globals->get_warp();
+ net->visibility = visibility->getDoubleValue();
+
+ // Convert the net buffer to network format
+ net->version = htonl(net->version);
+ htond(net->longitude);
+ htond(net->latitude);
+ htond(net->altitude);
+ htond(net->phi);
+ htond(net->theta);
+ htond(net->psi);
+ htond(net->vcas);
+ htond(net->climb_rate);
+ net->cur_time = htonl( net->cur_time );
+ net->warp = htonl( net->warp );
+ htond(net->visibility);
}
-static void raw2global( const FGRawFDM *raw, FGInterface *global ) {
- if ( raw->version == FG_RAW_FDM_VERSION ) {
- // cout << "pos = " << raw->longitude << " " << raw->latitude << endl;
- // cout << "sea level rad = " << cur_fdm_state->get_Sea_level_radius() << endl;
- cur_fdm_state->_updatePosition( raw->latitude, raw->longitude,
- raw->altitude * SG_METER_TO_FEET );
- cur_fdm_state->_set_Euler_Angles( raw->phi,
- raw->theta,
- raw->psi );
- cur_fdm_state->_set_V_calibrated_kts( raw->vcas );
- cur_fdm_state->_set_Climb_Rate( raw->climb_rate );
+static void net2global( FGNetFDM *net, FGInterface *global ) {
+ static long int last_warp = 0;
+
+ // Convert to the net buffer from network format
+ net->version = ntohl(net->version);
+ htond(net->longitude);
+ htond(net->latitude);
+ htond(net->altitude);
+ htond(net->phi);
+ htond(net->theta);
+ htond(net->psi);
+ htond(net->vcas);
+ htond(net->climb_rate);
+ net->cur_time = ntohl(net->cur_time);
+ net->warp = ntohl(net->warp);
+ htond(net->visibility);
+
+ if ( net->version == FG_NET_FDM_VERSION ) {
+ // cout << "pos = " << net->longitude << " " << net->latitude << endl;
+ // cout << "sea level rad = " << cur_fdm_state->get_Sea_level_radius() << endl;
+ cur_fdm_state->_updateGeodeticPosition( net->latitude,
+ net->longitude,
+ net->altitude
+ * SG_METER_TO_FEET );
+ cur_fdm_state->_set_Euler_Angles( net->phi,
+ net->theta,
+ net->psi );
+ cur_fdm_state->_set_V_calibrated_kts( net->vcas );
+ cur_fdm_state->_set_Climb_Rate( net->climb_rate );
+
+ if ( net->cur_time ) {
+ fgSetLong("/sim/time/cur-time-override", net->cur_time);
+ }
+
+ globals->set_warp( net->warp );
+ if ( net->warp != last_warp ) {
+ fgUpdateSkyAndLightingParams();
+ }
+ last_warp = net->warp;
+
+ fgSetDouble( "/environment/visibility-m", net->visibility );
} else {
- SG_LOG( SG_IO, SG_ALERT, "Error: version mismatch in raw2global()" );
+ SG_LOG( SG_IO, SG_ALERT, "Error: version mismatch in net2global()" );
+ SG_LOG( SG_IO, SG_ALERT,
+ "\tread " << net->version << " need " << FG_NET_FDM_VERSION );
SG_LOG( SG_IO, SG_ALERT,
- "\tsomeone needs to upgrade raw_fdm.hxx and recompile." );
+ "\tsomeone needs to upgrade net_fdm.hxx and recompile." );
}
}
if ( get_direction() == SG_IO_OUT ) {
// cout << "size of cur_fdm_state = " << length << endl;
- global2raw( cur_fdm_state, &buf );
+ global2net( cur_fdm_state, &buf );
if ( ! io->write( (char *)(& buf), length ) ) {
SG_LOG( SG_IO, SG_ALERT, "Error writing data." );
return false;
if ( io->get_type() == sgFileType ) {
if ( io->read( (char *)(& buf), length ) == length ) {
SG_LOG( SG_IO, SG_DEBUG, "Success reading data." );
- raw2global( &buf, cur_fdm_state );
+ net2global( &buf, cur_fdm_state );
}
} else {
while ( io->read( (char *)(& buf), length ) == length ) {
SG_LOG( SG_IO, SG_DEBUG, "Success reading data." );
- raw2global( &buf, cur_fdm_state );
+ net2global( &buf, cur_fdm_state );
}
}
}
projects / flightgear.git / blobdiff