generic_model_animation:
  type: task
  debug: true
  speed: 0
  script:
    - async:
      - define base <player.location.sub[<player.location.with_pose[0,<player.location.yaw>].direction.vector.div[2]>]>
      - define yaw <player.location.yaw.mul[-1].to_radians>
      - define model <server.flag[model].as_list.replace[li@]>
      - repeat 100:
        - playeffect %model% effect:red_dust data:1 offset:<co@250,250,250.to_particle_offset> qty:0
        - wait 1t

debug -> http://mcmonkey.org/paste/20082