! $Id: stream.f90,v 1.1 2018/10/13 19:11:49 brandenb Exp $
!
!  This module provide a way for users to specify custom initial
!  conditions.
!
!** AUTOMATIC CPARAM.INC GENERATION ****************************
! Declare (for generation of cparam.inc) the number of f array
! variables and auxiliary variables added by this module
!
! CPARAM logical, parameter :: linitial_condition = .true.
!
!***************************************************************
module InitialCondition
!
  use Cparam
  use Cdata
  use General, only: keep_compiler_quiet
  use Messages
!
  implicit none
!
  include 'initial_condition.h'
!
  real :: amp0=0., x1, x2
!
  namelist /initial_condition_pars/ amp0, x1, x2
!
  contains
!***********************************************************************
    subroutine register_initial_condition()
!
!  Registers variables associated with this module; likely none.
!
!  25-jun-13/ccyang: coded.
!
      if (lroot) call svn_id("$Id: stream.f90,v 1.1 2018/10/13 19:11:49 brandenb Exp $")
!
    endsubroutine register_initial_condition
!***********************************************************************
    subroutine initialize_initial_condition(f)
!
!  Initializes any module variables which are parameter dependent.
!
!  25-jun-13/ccyang: coded.
!
      real, dimension(mx,my,mz,mfarray) :: f
!
      call keep_compiler_quiet(f)
!
    endsubroutine initialize_initial_condition
!***********************************************************************
    subroutine initial_condition_uu(f)
!
!  Initializes the velocity field.
!
!  25-jun-13/ccyang: coded.
!
      real, dimension(mx,my,mz,mfarray), intent(inout) :: f
!
      integer :: ix
!
      do ix=1,mx
        print*,'AXEL ',x(ix)
        if (x(ix)>x1 .and. x(ix)<x2) then
          f(ix,:,:,2)=amp0
        endif
      enddo
!
    endsubroutine initial_condition_uu
!***********************************************************************
    subroutine read_initial_condition_pars(iostat)
!
      use File_io, only: parallel_unit
!
      integer, intent(out) :: iostat
!
      read(parallel_unit, NML=initial_condition_pars, IOSTAT=iostat)
!
    endsubroutine read_initial_condition_pars
!***********************************************************************
    subroutine write_initial_condition_pars(unit)
!
! Writes the initialization parameters for the initial conditions.
!
!  25-jun-13/ccyang: coded.
!
      integer, intent(in) :: unit
!
      write(unit, NML=initial_condition_pars)
!
    endsubroutine write_initial_condition_pars
!***********************************************************************
!
!********************************************************************
!************        DO NOT DELETE THE FOLLOWING       **************
!********************************************************************
!**  This is an automatically generated include file that creates  **
!**  copies dummy routines from noinitial_condition.f90 for any    **
!**  InitialCondition routines not implemented in this file        **
!**                                                                **
    include 'initial_condition_dummies.inc'
!********************************************************************
endmodule InitialCondition