--- trunk/mdtools/headers/ForceFields.hpp	2002/10/21 22:02:53	151
+++ trunk/mdtools/headers/ForceFields.hpp	2003/01/10 21:55:45	233
@@ -67,20 +67,13 @@ class ForceFields{ (protected)
   virtual void initializeTorsions( torsion_set* the_torsions ) = 0;
 
 protected:
-
-  void ffError( char* errMsg ){
-
-#ifdef IS_MPI
-    ffInterfaceExit( errMsg );
-#else
-    fprintf( stderr, "%s\n", errMsg );
-    exit(0);
-#endif
-  }
-    
   
   FILE *frcFile;
   SimInfo* entry_plug;
+  
+  int lineNum;
+  char readLine[500];
+  char* eof_test;
 
 };
 
@@ -121,4 +114,35 @@ class TraPPE_ExFF : public ForceFields{ (public)
   void initializeTorsions( torsion_set* the_torsions );
 };
 
+class LJ_FF : public ForceFields{
+
+public:
+  LJ_FF();
+  virtual ~LJ_FF();
+  
+  void initializeAtoms( void );
+  void initializeBonds( bond_pair* the_bonds );
+  void initializeBends( bend_set* the_bends );
+  void initializeTorsions( torsion_set* the_torsions );
+  void setLJfortran( void (*fortranSub)( double* positionArray,
+					 double* forceArray,
+					 double* potentialEnergy,
+					 short int* doPotentialCalc ) ){
+    doLJfortran = fortranSub;
+  }
+
+
+private:
+
+  void fastForward( char* stopText, char* searchOwner );
+  
+  // set our sister fortran module's function to be our own.
+  void wrapMe( void );
+  void (*doLJfortran)( double* positionArray,
+		       double* forceArray,
+		       double* potentialEnergy,
+		       short int* doPotentialCalc );
+
+};
+
 #endif