Andreas Gaeb: fix #222 (JSBSIm reset problems)

[flightgear.git] / src / FDM / JSBSim / models / FGModel.cpp

diff --git a/src/FDM/JSBSim/models/FGModel.cpp b/src/FDM/JSBSim/models/FGModel.cpp
index 778d2b3a37717d900eb61581d4ddaa8da704f31f..71f6cb3ed3d468e5cadb0bd3b7035ff751e161a6 100644 (file)
--- a/src/FDM/JSBSim/models/FGModel.cpp
+++ b/src/FDM/JSBSim/models/FGModel.cpp
@@ -6,7 +6,7 @@
  Purpose:      Base class for all models
  Called by:    FGSimExec, et. al.
 
- ------------- Copyright (C) 1999  Jon S. Berndt (jsb@hal-pc.org) -------------
+ ------------- Copyright (C) 1999  Jon S. Berndt (jon@jsbsim.org) -------------
 
  This program is free software; you can redistribute it and/or modify it under
  the terms of the GNU Lesser General Public License as published by the Free Software
@@ -39,7 +39,6 @@ INCLUDES
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
 
 #include "FGModel.h"
-#include "FGState.h"
 #include "FGFDMExec.h"
 #include "FGAtmosphere.h"
 #include "FGFCS.h"
@@ -48,13 +47,17 @@ INCLUDES
 #include "FGAerodynamics.h"
 #include "FGInertial.h"
 #include "FGGroundReactions.h"
+#include "FGExternalReactions.h"
 #include "FGAircraft.h"
 #include "FGPropagate.h"
 #include "FGAuxiliary.h"
+#include <iostream>
+
+using namespace std;
 
 namespace JSBSim {
 
-static const char *IdSrc = "$Id$";
+static const char *IdSrc = "$Id: FGModel.cpp,v 1.16 2010/11/18 12:38:06 jberndt Exp $";
 static const char *IdHdr = ID_MODEL;
 
 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -68,19 +71,6 @@ CLASS IMPLEMENTATION
 FGModel::FGModel(FGFDMExec* fdmex)
 {
   FDMExec     = fdmex;
-  NextModel   = 0L;
-
-  State           = 0;
-  Atmosphere      = 0;
-  FCS             = 0;
-  Propulsion      = 0;
-  MassBalance     = 0;
-  Aerodynamics    = 0;
-  Inertial        = 0;
-  GroundReactions = 0;
-  Aircraft        = 0;
-  Propagate       = 0;
-  Auxiliary       = 0;
 
   //in order for FGModel derived classes to self-bind (that is, call
   //their bind function in the constructor, the PropertyManager pointer
@@ -104,30 +94,7 @@ FGModel::~FGModel()
 
 bool FGModel::InitModel(void)
 {
-  State           = FDMExec->GetState();
-  Atmosphere      = FDMExec->GetAtmosphere();
-  FCS             = FDMExec->GetFCS();
-  Propulsion      = FDMExec->GetPropulsion();
-  MassBalance     = FDMExec->GetMassBalance();
-  Aerodynamics    = FDMExec->GetAerodynamics();
-  Inertial        = FDMExec->GetInertial();
-  GroundReactions = FDMExec->GetGroundReactions();
-  Aircraft        = FDMExec->GetAircraft();
-  Propagate       = FDMExec->GetPropagate();
-  Auxiliary       = FDMExec->GetAuxiliary();
-
-  if (!State ||
-      !Atmosphere ||
-      !FCS ||
-      !Propulsion ||
-      !MassBalance ||
-      !Aerodynamics ||
-      !Inertial ||
-      !GroundReactions ||
-      !Aircraft ||
-      !Propagate ||
-      !Auxiliary) return(false);
-  else return(true);
+  return true;
 }
 
 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -136,9 +103,11 @@ bool FGModel::Run()
 {
   if (debug_lvl & 4) cout << "Entering Run() for model " << Name << endl;
 
-  if (exe_ctr++ >= rate) exe_ctr = 1;
+  if (rate == 1) return false; // Fast exit if nothing to do
+
+  if (exe_ctr >= rate) exe_ctr = 1;
 
-  if (exe_ctr == 1) return false;
+  if (exe_ctr++ == 1) return false;
   else              return true;
 }