-- Required control rate.
control_rate = 2

-- Required "control" function.
function control()
 task = ai.taskname()
 if task == "hyperspace" then
  ai.hyperspace() -- Try to go to hyperspace.
 elseif task == "runaway" then
  if ai.dist(ai.pos(ai.targetid())) > 300 then
   ai.hyperspace()
  end
 elseif task == "none" then
    planet = ai.rndplanet()
  -- Planet must exist.
  if planet == nil then
   ai.pushtask(0, "hyperspace")
  else
     ai.pushtask(0, "go", planet)
  end
  end
end

-- Required "attacked" function.
function attacked(attacker)
  if ai.taskname() ~= "runaway" then
    -- Let's have some messages.
    num = rnd.int(0,3)
    if num == 0 then msg = "Mayday! We are under attack!"
    elseif num == 1 then msg = "Requesting assistance! Some scoundral is attacking us!"
    elseif num == 2 then msg = "Merchant vessle under attack here! HALP!"
    end
    if msg then ai.broadcast(msg) end

    -- So bravely run away!
    ai.pushtask(0, "runaway", attacker)
 else -- Runaway from the new bad guys.
  ai.poptask()
  ai.pushtask(0, "runaway", attacker)
  end
end

function create()
  ai.setcredits(rnd.int(200, ai.shipprice()/100))

  num = rnd.int(12)
  if num < 5 then
    cargo = "Food"
  elseif num < 8 then
    cargo = "Ore"
  elseif num < 10 then
    cargo = "Industrial Goods"
  elseif num < 12 then
    cargo = "Luxury Goods"
  else
    cargo = "Medicine"
  end
  ai.setcargo(cargo, rnd.int(0, ai.cargofree()))
end

-- Runs away.
function runaway()
  target = ai.targetid()
 
 if not ai.exists(target) then
  ai.pushtask()
  ai.pushtask(0, "hyperspace")
  return
 end

  dir = ai.face(target, 1)
  ai.accel()
 if ai.hasturrets() then
  dist = ai.dist(ai.pos(target))
  if dist < 300 then
   ai.settarget(target)
   ai.shoot()
  end
 end
end

-- Fly to the target.
function go()
  target = ai.target()
  dir = ai.face(target)
  dist = ai.dist(target)
  bdist = ai.minbrakedist()
  if dir < 10 and dist > bdist then
    ai.accel()
  elseif dir < 10 and dist < bdist then
    ai.poptask()
    ai.pushtask(0, "stop")
  end
end

-- Backthrust.
function stop()
  ai.brake()
  if ai.isstopped() then
  ai.stop()
    ai.poptask()
    ai.settimer(0, rnd.int(8000, 15000))
    ai.pushtask(0, "land")
 else
  ai.brake()
  end
end

--Waits.
function land()
  if ai.timeup(0) then
    ai.pushtask(0, "hyperspace")
  end
end

-- Go to hyperspace YEAAAHHH!!
function hyperspace()
 dir = ai.face(-1) -- Face away from (0,0)
 if(dir < 10) then 
  ai.accel()
 end
end