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Updated to support all the fields in net_ctrls.hxx

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curt 2003-01-10 19:10:46 +00:00
parent d359a103c5
commit 95600d1c27
2 changed files with 263 additions and 14 deletions
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269
src/Network/native_ctrls.cxx
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@ -21,13 +21,27 @@
// $Id$
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <simgear/debug/logstream.hxx>
#include <simgear/io/iochannel.hxx>
#include <simgear/io/lowlevel.hxx> // endian tests
#include <FDM/flight.hxx>
#include <Main/fg_props.hxx>
#include <Scenery/scenery.hxx> // ground elevation
#include "native_ctrls.hxx"
// FreeBSD works better with this included last ... (?)
#if defined(WIN32) && !defined(__CYGWIN__)
# include <windows.h>
#else
# include <netinet/in.h> // htonl() ntohl()
#endif
FGNativeCtrls::FGNativeCtrls() {
}
@ -57,28 +71,255 @@ bool FGNativeCtrls::open() {
}
static void global2net( const FGControls *global, FGNetCtrls *net ) {
// 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;
}
}
// Populate the FGNetCtrls structure from the property tree.
void FGProps2NetCtrls( FGNetCtrls *net ) {
int i;
SGPropertyNode * node = fgGetNode("/controls", true);
// fill in values
net->version = FG_NET_CTRLS_VERSION;
net->aileron = globals->get_controls()->get_aileron();
net->elevator = globals->get_controls()->get_elevator();
net->elevator_trim = globals->get_controls()->get_elevator_trim();
net->rudder = globals->get_controls()->get_rudder();
net->flaps = globals->get_controls()->get_flaps();
for ( i = 0; i < FGNetCtrls::FG_MAX_ENGINES; ++i ) {
net->throttle[i] = globals->get_controls()->get_throttle(i);
net->mixture[i] = globals->get_controls()->get_mixture(i);
net->prop_advance[i] = globals->get_controls()->get_prop_advance(i);
net->aileron = node->getDoubleValue( "aileron" );
net->elevator = node->getDoubleValue( "elevator" );
net->elevator_trim = node->getDoubleValue( "elevator-trim" );
net->rudder = node->getDoubleValue( "rudder" );
net->flaps = node->getDoubleValue( "flaps" );
net->flaps_power
= node->getDoubleValue( "/systems/electrical/outputs/flaps",
1.0 ) >= 1.0;
net->num_engines = FGNetCtrls::FG_MAX_ENGINES;
for ( i = 0; i < FGNetCtrls::FG_MAX_ENGINES; ++i ) {
net->throttle[i] = node->getDoubleValue( "throttle", 0.0 );
net->mixture[i] = node->getDoubleValue( "mixture", 0.0 );
net->fuel_pump_power[i]
= node->getDoubleValue( "/systems/electrical/outputs/fuel-pump",
1.0 ) >= 1.0;
net->prop_advance[i] = node->getDoubleValue( "propeller-pitch", 0.0 );
net->magnetos[i] = node->getIntValue( "magnetos", 0 );
if ( i == 0 ) {
// cout << "Magnetos -> " << node->getIntValue( "magnetos", 0 );
}
net->starter_power[i]
= node->getDoubleValue( "/systems/electrical/outputs/starter",
1.0 ) >= 1.0;
if ( i == 0 ) {
// cout << " Starter -> " << node->getIntValue( "stater", false )
// << endl;
}
}
net->num_tanks = FGNetCtrls::FG_MAX_TANKS;
for ( i = 0; i < FGNetCtrls::FG_MAX_TANKS; ++i ) {
net->fuel_selector[i] = globals->get_controls()->get_fuel_selector(i);
if ( node->getChild("fuel-selector", i) != 0 ) {
net->fuel_selector[i]
= node->getChild("fuel-selector", i)->getDoubleValue();
} else {
net->fuel_selector[i] = false;
}
}
net->num_wheels = FGNetCtrls::FG_MAX_WHEELS;
for ( i = 0; i < FGNetCtrls::FG_MAX_WHEELS; ++i ) {
net->brake[i] = globals->get_controls()->get_brake(i);
if ( node->getChild("brakes", i) != 0 ) {
if ( node->getChild("parking-brake")->getDoubleValue() > 0.0 ) {
net->brake[i] = 1.0;
} else {
net->brake[i]
= node->getChild("brakes", i)->getDoubleValue();
}
} else {
net->brake[i] = 0.0;
}
}
net->hground = globals->get_scenery()->get_cur_elev();
node = fgGetNode("/controls/switches", true);
net->master_bat = node->getChild("master-bat")->getBoolValue();
net->master_alt = node->getChild("master-alt")->getBoolValue();
net->master_avionics = node->getChild("master-avionics")->getBoolValue();
net->wind_speed_kt = fgGetDouble("/environment/wind-speed-kt");
net->wind_dir_deg = fgGetDouble("/environment/wind-from-heading-deg");
// cur_fdm_state->get_ground_elev_ft() is what we want ... this
// reports the altitude of the aircraft.
// "/environment/ground-elevation-m" reports the ground elevation
// of the current view point which could change substantially if
// the user is switching views.
net->hground = cur_fdm_state->get_ground_elev_ft() * SG_FEET_TO_METER;
net->magvar = fgGetDouble("/environment/magnetic-variation-deg");
net->speedup = fgGetInt("/sim/speed-up");
net->freeze = 0;
if ( fgGetBool("/sim/freeze/master") ) {
net->freeze |= 0x01;
}
if ( fgGetBool("/sim/freeze/position") ) {
net->freeze |= 0x02;
}
if ( fgGetBool("/sim/freeze/fuel") ) {
net->freeze |= 0x04;
}
// convert to network byte order
net->version = htonl(net->version);
htond(net->aileron);
htond(net->elevator);
htond(net->elevator_trim);
htond(net->rudder);
htond(net->flaps);
net->flaps_power = htonl(net->flaps_power);
for ( i = 0; i < FGNetCtrls::FG_MAX_ENGINES; ++i ) {
htond(net->throttle[i]);
htond(net->mixture[i]);
net->fuel_pump_power[i] = htonl(net->fuel_pump_power[i]);
htond(net->prop_advance[i]);
net->magnetos[i] = htonl(net->magnetos[i]);
net->starter_power[i] = htonl(net->starter_power[i]);
}
net->num_engines = htonl(net->num_engines);
for ( i = 0; i < FGNetCtrls::FG_MAX_TANKS; ++i ) {
net->fuel_selector[i] = htonl(net->fuel_selector[i]);
}
net->num_tanks = htonl(net->num_tanks);
for ( i = 0; i < FGNetCtrls::FG_MAX_WHEELS; ++i ) {
htond(net->brake[i]);
}
net->num_wheels = htonl(net->num_wheels);
net->gear_handle = htonl(net->gear_handle);
net->master_bat = htonl(net->master_bat);
net->master_alt = htonl(net->master_alt);
net->master_avionics = htonl(net->master_avionics);
htond(net->wind_speed_kt);
htond(net->wind_dir_deg);
htond(net->hground);
htond(net->magvar);
net->speedup = htonl(net->speedup);
net->freeze = htonl(net->freeze);
}
// Update the property tree from the FGNetCtrls structure.
void FGNetCtrls2Props( FGNetCtrls *net ) {
int i;
SGPropertyNode * node = fgGetNode("/controls", true);
// convert from network byte order
net->version = htonl(net->version);
htond(net->aileron);
htond(net->elevator);
htond(net->elevator_trim);
htond(net->rudder);
htond(net->flaps);
net->flaps_power = htonl(net->flaps_power);
net->num_engines = htonl(net->num_engines);
for ( i = 0; i < net->num_engines; ++i ) {
net->magnetos[i] = htonl(net->magnetos[i]);
net->starter_power[i] = htonl(net->starter_power[i]);
htond(net->throttle[i]);
htond(net->mixture[i]);
net->fuel_pump_power[i] = htonl(net->fuel_pump_power[i]);
htond(net->prop_advance[i]);
}
net->num_tanks = htonl(net->num_tanks);
for ( i = 0; i < net->num_tanks; ++i ) {
net->fuel_selector[i] = htonl(net->fuel_selector[i]);
}
net->num_wheels = htonl(net->num_wheels);
for ( i = 0; i < net->num_wheels; ++i ) {
htond(net->brake[i]);
}
net->gear_handle = htonl(net->gear_handle);
net->master_bat = htonl(net->master_bat);
net->master_alt = htonl(net->master_alt);
net->master_avionics = htonl(net->master_avionics);
htond(net->wind_speed_kt);
htond(net->wind_dir_deg);
htond(net->hground);
htond(net->magvar);
net->speedup = htonl(net->speedup);
net->freeze = htonl(net->freeze);
if ( net->version != FG_NET_CTRLS_VERSION ) {
SG_LOG( SG_IO, SG_ALERT,
"Version mismatch with raw controls packet format." );
SG_LOG( SG_IO, SG_ALERT,
"FlightGear needs version = " << FG_NET_CTRLS_VERSION
<< " but is receiving version = " << net->version );
}
node->setDoubleValue( "aileron", net->aileron );
node->setDoubleValue( "elevator", net->elevator );
node->setDoubleValue( "elevator-trim", net->elevator_trim );
node->setDoubleValue( "rudder", net->rudder );
node->setDoubleValue( "flaps", net->flaps );
fgSetBool( "/systems/electrical/outputs/flaps", net->flaps_power );
for ( i = 0; i < FGNetCtrls::FG_MAX_ENGINES; ++i ) {
node->getChild( "throttle", i )->setDoubleValue( net->throttle[i] );
node->getChild( "mixture", i )->setDoubleValue( net->mixture[i] );
node->getChild( "propeller-pitch", i )
->setDoubleValue( net->prop_advance[i] );
node->getChild( "magnetos", i )->setDoubleValue( net->magnetos[i] );
}
fgSetBool( "/systems/electrical/outputs/fuel-pump",
net->fuel_pump_power[0] );
fgSetBool( "/systems/electrical/outputs/starter",
net->starter_power[0] );
for ( i = 0; i < FGNetCtrls::FG_MAX_TANKS; ++i ) {
node->getChild( "fuel-selector", i )
->setBoolValue( net->fuel_selector[i] );
}
for ( i = 0; i < FGNetCtrls::FG_MAX_WHEELS; ++i ) {
node->getChild( "brakes", i )->setDoubleValue( net->brake[i] );
}
node->setBoolValue( "gear-down", net->gear_handle );
node = fgGetNode( "/controls/switches", true );
node->setBoolValue( "master-bat", net->master_bat );
node->setBoolValue( "master-alt", net->master_alt );
node->setBoolValue( "master-avionics", net->master_avionics );
node = fgGetNode( "/environment", true );
node->setBoolValue( "wind-speed-kt", net->wind_speed_kt );
node->setBoolValue( "wind-from-heading-deg", net->wind_dir_deg );
node->setBoolValue( "magnetic-variation-deg", net->magvar );
// ground elevation ???
fgSetInt( "/sim/speed-up", net->speedup );
node = fgGetNode( "/sim/freeze", true );
node->setBoolValue( "master", net->freeze & 0x01 );
node->setBoolValue( "position", net->freeze & 0x02 );
node->setBoolValue( "fuel", net->freeze & 0x04 );
}
@ -120,7 +361,7 @@ bool FGNativeCtrls::process() {
if ( get_direction() == SG_IO_OUT ) {
// cout << "size of cur_fdm_state = " << length << endl;
global2net( globals->get_controls(), &net_ctrls );
FGProps2NetCtrls( &net_ctrls );
if ( ! io->write( (char *)(& net_ctrls), length ) ) {
SG_LOG( SG_IO, SG_ALERT, "Error writing data." );

8
src/Network/native_ctrls.hxx
View file

@ -60,6 +60,14 @@ public:
};
// Helper functions which may be useful outside this class
// Populate the FGNetCtrls structure from the property tree.
void FGProps2NetCtrls( FGNetCtrls *net );
// Update the property tree from the FGNetCtrls structure.
void FGNetCtrls2Props( FGNetCtrls *net );
#endif // _FG_NATIVE_CTRLS_HXX