al_release_haptic_effect - Allegro 5 API

       Releases  a previously uploaded haptic effect from the device it has been uploaded to, allowing for other
       effects to be uploaded.  The play_id must be  a  valid  ALLEGRO_HAPTIC_EFFECT_ID(3alleg5)  obtained  from
       al_upload_haptic_effect(3alleg5), al_upload_and_play_haptic_effect(3alleg5) or al_rumble_haptic(3alleg5).

       This    function    is   called   automatically   when   you   call   al_release_haptic(3alleg5)   on   a
       ALLEGRO_HAPTIC(3alleg5) for all effects that are still uploaded to the device.  Therefore  this  function
       is  most  useful  if  you  want to upload and release haptic effects dynamically, for example as a way to
       circumvent the limit imposed by al_get_max_haptic_effects(3alleg5).

       Returns true on success, false if the effect couldn’t be released for any reason such  as  when  NULL  is
       passed, the effect is not active or failure to release the effect by the driver.

       al_release_haptic_effect - Allegro 5 API

       5.1.8

              [UnstableAPI]:  Perhaps  could be simplified due to limited support for all the exposed features
              across all of the platforms.  Awaiting feedback from users.

Allegro reference manual                                                       al_release_haptic_effect(3alleg5)

              #include <allegro5/allegro.h>

              bool al_release_haptic_effect(ALLEGRO_HAPTIC_EFFECT_ID *id)