   'left_flap_stuck',
   'right_flap_stuck',
   'stutter',
+  'boost_stuck',
+  'boost_failure',
 ]
 
 class Engine extends Entity

    return [xMomentum, yMomentum, angularMomentum]

  boostOn: () =>
    @boosting = true

  boostOff: () =>
    @boosting = false

module.exports = Engine
    if @colliding
      @doCollisionDamage()

    # Conditions
    if @conditions.has('no_thrust')
      @throttle = 0

    if @conditions.has('boost_failure')
      @boosting = false

# Return the angle the engine is pointing in
  getDirection: () =>
