<triggers>
  <trigger
   enabled="y"
   group="bt_tendril"
   match="A tendril of Kethuru suddenly explodes!"
   send_to="12"
   sequence="100"
  >
  <send>SetVariable("bt_shockwave_tendril", "dead")</send>
  </trigger>
  <trigger
   enabled="y"
   group="bt_tendril"
   match="Drawn by the flux of energy, a tendril of Kethuru suddenly wanders into the nearby area."
   send_to="12"
   sequence="100"
  >
  <send>SetVariable("bt_shockwave_tendril", "alive")
SetVariable("bt_shockwave", "right")
Send("pilot steer east")</send>
  </trigger>
  <trigger
   custom_colour="11"
   enabled="y"
   group="bt_tendril"
   match="With a ripple, Crown of the Empire frees itself from its shockwave."
   send_to="12"
   sequence="100"
  >
  <send>if GetVariable("bt_shockwave_tendril")=="alive" then
  if GetVariable("bt_shockwave")=="left" then
    Send("pilot steer east")
    SetVariable("bt_shockwave", "right")
  else
    Send("pilot steer west")
    SetVariable("bt_shockwave", "left")
  end
end</send>
  </trigger>
</triggers>