X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FFDM%2FMagicCarpet.cxx;h=0402c28a50bcdb190a6310f43b9b595ba032b76d;hb=68f248879cb15562c7b026445f83caf8f2842ae9;hp=8a77931a879f900bae5d8a19b5d1a00871707418;hpb=5ea9c04c644a7e115f651132a6179d4e9d1ef8ce;p=flightgear.git

diff --git a/src/FDM/MagicCarpet.cxx b/src/FDM/MagicCarpet.cxx
index 8a77931a8..0402c28a5 100644
--- a/src/FDM/MagicCarpet.cxx
+++ b/src/FDM/MagicCarpet.cxx
@@ -2,7 +2,7 @@
 //
 // Written by Curtis Olson, started October 1999.
 //
-// Copyright (C) 1999  Curtis L. Olson  - curt@flightgear.org
+// Copyright (C) 1999  Curtis L. Olson  - http://www.flightgear.org/~curt
 //
 // This program is free software; you can redistribute it and/or
 // modify it under the terms of the GNU General Public License as
@@ -33,7 +33,7 @@
 
 
 FGMagicCarpet::FGMagicCarpet( double dt ) {
-    set_delta_t( dt );
+//     set_delta_t( dt );
 }
 
 
@@ -44,17 +44,29 @@ FGMagicCarpet::~FGMagicCarpet() {
 // Initialize the Magic Carpet flight model, dt is the time increment
 // for each subsequent iteration through the EOM
 void FGMagicCarpet::init() {
+    common_init();
 }
 
 
 // Run an iteration of the EOM (equations of motion)
-bool FGMagicCarpet::update( int multiloop ) {
+void FGMagicCarpet::update( double dt ) {
     // cout << "FGLaRCsim::update()" << endl;
 
-    double time_step = get_delta_t() * multiloop;
+    if (is_suspended())
+      return;
+
+    // int multiloop = _calc_multiloop(dt);
+
+    double time_step = dt;
 
     // speed and distance traveled
-    double speed = controls.get_throttle( 0 ) * 2000; // meters/sec
+    double speed = globals->get_controls()->get_throttle( 0 ) * 2000; // meters/sec
+    if ( globals->get_controls()->get_brake_left() > 0.0
+         || globals->get_controls()->get_brake_right() > 0.0 )
+    {
+        speed = -speed;
+    }
+
     double dist = speed * time_step;
     double kts = speed * SG_METER_TO_NM * 3600.0;
     _set_V_equiv_kts( kts );
@@ -62,7 +74,7 @@ bool FGMagicCarpet::update( int multiloop ) {
     _set_V_ground_speed( kts );
 
     // angle of turn
-    double turn_rate = controls.get_aileron() * SGD_PI_4; // radians/sec
+    double turn_rate = globals->get_controls()->get_aileron() * SGD_PI_4; // radians/sec
     double turn = turn_rate * time_step;
 
     // update euler angles
@@ -72,7 +84,7 @@ bool FGMagicCarpet::update( int multiloop ) {
 
     // update (lon/lat) position
     double lat2, lon2, az2;
-    if ( speed > SG_EPSILON ) {
+    if ( fabs( speed ) > SG_EPSILON ) {
 	geo_direct_wgs_84 ( get_Altitude(),
 			    get_Latitude() * SGD_RADIANS_TO_DEGREES,
 			    get_Longitude() * SGD_RADIANS_TO_DEGREES,
@@ -91,7 +103,7 @@ bool FGMagicCarpet::update( int multiloop ) {
     sgGeodToGeoc( get_Latitude(), get_Altitude(), &sl_radius, &lat_geoc );
 
     // update altitude
-    double real_climb_rate = -controls.get_elevator() * 5000; // feet/sec
+    double real_climb_rate = -globals->get_controls()->get_elevator() * 5000; // feet/sec
     _set_Climb_Rate( real_climb_rate / 500.0 );
     double climb = real_climb_rate * time_step;
 
@@ -101,6 +113,4 @@ bool FGMagicCarpet::update( int multiloop ) {
     // cout << "(setto) sea level radius (ft) = " << get_Sea_level_radius() << endl;
     _set_Sea_level_radius( sl_radius * SG_METER_TO_FEET);
     _set_Altitude( get_Altitude() + climb );
-
-    return true;
 }