Fortraneries/BloubWorld/bloubspace.f90

! 
!          fonctions de base de gestion des bloubs
! 

module bloubspace

  implicit none

  ! ----------------------------------------------------------------

  type t_bloubs
    character(8)         :: nick
    logical              :: alive
    integer              :: num
    real                 :: px, py, pz
    real                 :: vx, vy, vz
    real                 :: radius
    integer              :: seq
  end type t_bloubs

  contains               ! -----------------------------------------

  subroutine random_pv (blb)
    type(t_bloubs), intent (inout)  :: blb

    blb%px = rand() - 0.50
    blb%py = rand() * 0.25
    blb%pz = rand() - 0.50

    blb%vx = (rand() - 0.5) / 4.000
    blb%vy = (rand() - 0.5) / 4.000
    blb%vz = (rand() - 0.5) / 4.000

    blb%alive = .TRUE.

  end subroutine
  ! ----------------------------------------------------------------

  subroutine display_bloub (blb, message)
    type(t_bloubs), intent (in)  :: blb
    character(*),   intent (in)  :: message

    character(5)                 :: life

    if (blb%alive) then
      life = "alive"
    else
      life = "dead"
    endif
    write (0, '(A)') '------------- ' // message
    write (0, '(4X,A8,2X,I6,4X,A5)') blb%nick, blb%num, blb%alive
    write (0, '(4X,A1,3X,3(F8.3, 4X))') 'P', blb%px, blb%py, blb%pz
    write (0, '(4X,A1,3X,3(F8.3, 4X))') 'V', blb%vx, blb%vy, blb%vz
    write (0, '()')

  end subroutine
  ! ----------------------------------------------------------------

  subroutine move_bloub (blb, coef)
    type(t_bloubs), intent (inout)  :: blb
    real,           intent (in)     :: coef

    ! we must check that this bloub is alive ?

    blb%px  = blb%px + (blb%vx * coef)
    blb%py  = blb%py + (blb%vy * coef)
    blb%pz  = blb%pz + (blb%vz * coef)

  end subroutine
  ! ----------------------------------------------------------------
  subroutine bound_a_blob (blb)
    type(t_bloubs), intent (inout)  :: blb

    if (5.0 .lt. blb%px) then
      blb%vx = -1.0 * blb%vx
      blb%px = 5.0
      blb%seq = blb%seq + 1
    endif
    if (-5.0 .gt. blb%px) then
      blb%vx = -1.0 * blb%vx
      blb%px = -5.0
      blb%seq = blb%seq + 1
    endif

    if (0.0 .gt. blb%py) then
      blb%vy = -1.0 * blb%vy
      blb%py = 0.0
    endif
    if (3.0 .lt. blb%py) then
      blb%vy = -1.0 * blb%vy
      blb%py = 3.0
    endif

    if (5.0 .lt. blb%pz) then
      blb%vz = -1.0 * blb%vz
      blb%pz = 5.0
    endif
    if (-5.0 .gt. blb%pz) then
      blb%vz = -1.0 * blb%vz
      blb%pz = -5.0
    endif

  end subroutine

  ! ----------------------------------------------------------------
  subroutine green_soylent (blb)
    type(t_bloubs), intent (inout)  :: blb
    if (blb%seq .gt. 200) then
      blb%alive = .FALSE.
    endif
  end subroutine
  ! ----------------------------------------------------------------


end module