*
* $Id: gpustep.F,v 3.1.1.1 2002/07/11 16:02:00 cafagna Exp $
*
* $Log: gpustep.F,v $
* Revision 3.1.1.1  2002/07/11 16:02:00  cafagna
* First GPAMELA release on CVS
*
*
*CMZ :  3.00/00 11/05/2001  13.44.09  by  Marialuigia Ambriola
*CMZ :  2.01/00 05/04/2000  14.35.18  by  Marialuigia Ambriola
*CMZ :  2.00/00 03/03/2000  15.39.05  by  Francesco Cafagna
*CMZ :  1.01/00 30/04/96  18.28.33  by  Francesco Cafagna
*CMZ :  1.00/03 29/04/96  16.56.08  by  Francesco Cafagna
*-- Author :    Francesco Cafagna   29/04/96
      SUBROUTINE GPGIG
************************************************************************
*                                                                      *
* User action in GUSTEP                                                *
*                                                                      *
* Variables definition:                                                *
* IN:                                                                  *
*  IFLAG = 1, just entered GUSTEP                                      *
*  IFLAG = 2, leaving GUSTEP                                           *
*                                                                      *
* Called by: GUSTEP                                                    *
* Author: Francesco Cafagna, 29/04/96 16.56.08                         *
*                                                                      *
************************************************************************
#include "gpques.inc"
#include "gctmed.inc"
#include "gckine.inc"
#include "gcking.inc"
#include "gcflag.inc"
#include "gctrak.inc"
#include "gcvolu.inc"
#include "gcsets.inc"
#include "gpkey.inc"
#include "gpsed.inc"
      
*
      LOGICAL W,GPLOOK
      INTEGER IFLAG
      INTEGER IFL,IN,MECNAM(MAXMEC)
      IF(IFLAG.EQ.1) GO TO 999
      IN = INWVOL
      IF(IN.NE.0) GO TO 999
C #       open(20,file='GIG.dat',access='append')
C #       open(21,file='All.dat',access='append')
*
* Is it a gamma ?
*
      IF ((IPART.NE.1).AND.(IPART.NE.13)) GO TO 999
      IF (IPART.EQ.13) write(*,*)'particle=',IPART
*
* Store the mechanisms active for the current step
*
      IF(NMEC.EQ.0)THEN
         MECNAM(1)=NAMEC(29)
      ELSE
         DO I=1,NMEC
            MEC=LMEC(I)
            IF(MEC.LE.MAXMEC) THEN
               MECNAM(I)=NAMEC(MEC)
            ELSEIF(MEC-100.LE.MAXME1.AND.MEC-100.GT.0) THEN
               MECNAM(I)=NAMEC1(MEC-100)
            ENDIF
         ENDDO
      ENDIF
*
      W=GPLOOK('CAAB',NAMES,NLEVEL) 
      IF(W) THEN
c      CALL GPCXYZ
      IF ((GETOT.GT.0.009097).AND.(GETOT.LT.0.028608).AND.(IPART.EQ.1))
     + then
c      PRINT *, ' GPUSTEP : WE FOUND A GAMMA INTO THE W ! Energy:'
c     +        ,GETOT
C #       write(20,'(1x,f7.3,1x,f6.3,1x,i4,1x,a10,1x,i4,5(1x,e13.6),1x,i4)')
C #      + GETOT*1000., STEP, ISTAK, KCASE, NGKINE,
C #      + VECT(4)*VECT(7)*1000., VECT(5)*VECT(7)*1000., 
C #      + VECT(6)*VECT(7)*1000., VECT(7)*1000., VECT(3), NUMBER(NLEVEL)
      ENDIF
C #       IF (IPART.EQ.13) then
C #       write(21,'(1x,f7.3,1x,f6.3,1x,i4,1x,a10,1x,i4,5(1x,e13.6),1x,i4)')
C #      + GETOT*1000., STEP, ISTAK, KCASE, NGKINE,
C #      + VECT(4)*VECT(7)*1000., VECT(5)*VECT(7)*1000., 
C #      + VECT(6)*VECT(7)*1000., VECT(7)*1000., VECT(3), NUMBER(NLEVEL)      
C #       ENDIF
      ENDIF
999   CONTINUE
C #       close(20)
C #       close(21)
     
      RETURN
      END