playActionOnLank (key, action) {
    const lank = this.lanks[key]
    if (!lank) {
      console.warn(`Tried to play action '${action}' on non existant lank '${key}'`)
      return
    }

    // Without these locks the actions are changed due to sprite sheet rendering.
    lank.lockAction(false)
    lank.queueAction(action)
    lank.lockAction(true)
  }
Plays an action on a lank. If you want an animation to loop, and it isn't,
you need to make the action loop on the ThangType.
@param {string} key The lanks unique key
@param {string} action The action to queue onto the lank
@return {undefined}