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Add support for sending out a requested aircraft weight to an external FDM

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via the "pipe" interface.
This commit is contained in:
curt 2003-11-10 21:56:32 +00:00
parent 41920268a6
commit 23c1057a19
1 changed files with 24 additions and 2 deletions
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26
src/FDM/ExternalPipe/ExternalPipe.cxx
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@ -1,4 +1,4 @@
// ExternalPipe.hxx -- a "pipe" interface to an external flight dynamics model
// ExternalPipe.cxx -- a "pipe" interface to an external flight dynamics model
//
// Written by Curtis Olson, started March 2003.
//
@ -117,6 +117,7 @@ void FGExternalPipe::init() {
double ground = fgGetDouble( "/environment/ground-elevation-m" );
double heading = fgGetDouble("/sim/presets/heading-deg");
double speed = fgGetDouble( "/sim/presets/airspeed-kt" );
double weight = fgGetDouble( "/sim/aircraft-weight-lbs" );
#ifdef HAVE_MKFIFO
@ -159,6 +160,14 @@ void FGExternalPipe::init() {
SG_LOG( SG_IO, SG_ALERT, "Write error to named pipe: " << fifo_name_1 );
}
if ( weight > 1000.0 ) {
sprintf( cmd, "1aircraft-weight-lbs=%.2f", weight );
result = write( pd1, cmd, strlen(cmd) );
if ( result == -1 ) {
SG_LOG( SG_IO, SG_ALERT, "Write error to named pipe: " << fifo_name_1 );
}
}
SG_LOG( SG_IO, SG_INFO, "before sending reset command." );
if( fgGetBool("/sim/presets/onground") ) {
@ -183,13 +192,25 @@ void FGExternalPipe::update( double dt ) {
int length;
int result;
if ( is_suspended() ) {
return;
}
int iterations = _calc_multiloop(dt);
double weight = fgGetDouble( "/sim/aircraft-weight-lbs" );
static double last_weight = 0.0;
if ( fabs( weight - last_weight ) > 0.01 ) {
char cmd[256];
sprintf( cmd, "1aircraft-weight-lbs=%.2f", weight );
result = write( pd1, cmd, strlen(cmd) );
if ( result == -1 ) {
SG_LOG( SG_IO, SG_ALERT, "Write error to named pipe: " << fifo_name_1 );
}
}
last_weight = weight;
// Send control positions to remote fdm
length = sizeof(ctrls);
FGProps2NetCtrls( &ctrls, true, false );
@ -205,6 +226,7 @@ void FGExternalPipe::update( double dt ) {
<< fifo_name_1 );
}
// Read fdm values
length = sizeof(fdm);
result = read( pd2, (char *)(& fdm), length );
if ( result == -1 ) {