static void trigger_ember_gain( warlock_t* p, double amount, gain_t* gain, double chance = 1.0 )
  {
    if ( ! p -> rng().roll( chance ) ) return;

    if ( ( p -> sets.has_set_bonus( SET_CASTER, T16, B4 ) || p -> sets.has_set_bonus( WARLOCK_DESTRUCTION, T17, B4 )) && //check whether we fill one up.
         ( ( p -> resources.current[RESOURCE_BURNING_EMBER] < 1.0 && p -> resources.current[RESOURCE_BURNING_EMBER] + amount >= 1.0 ) ||
         ( p -> resources.current[RESOURCE_BURNING_EMBER] < 2.0 && p -> resources.current[RESOURCE_BURNING_EMBER] + amount >= 2.0 ) ||
         ( p -> resources.current[RESOURCE_BURNING_EMBER] < 3.0 && p -> resources.current[RESOURCE_BURNING_EMBER] + amount >= 3.0 ) ||
         ( p -> resources.current[RESOURCE_BURNING_EMBER] < 4.0 && p -> resources.current[RESOURCE_BURNING_EMBER] + amount >= 4.0 ) ) )
    {
      if(p -> sets.has_set_bonus( SET_CASTER, T16, B4 ))
        p -> buffs.tier16_4pc_ember_fillup -> trigger();

      if( p -> sets.has_set_bonus( WARLOCK_DESTRUCTION, T17, B4 ) && p -> rppm_chaotic_infusion.trigger())
        p -> buffs.chaotic_infusion ->trigger();
    }

    p -> resource_gain( RESOURCE_BURNING_EMBER, amount, gain );

    // If getting to 1 full ember was a surprise, the player would have to react to it
    if ( p -> resources.current[RESOURCE_BURNING_EMBER] == 1.0 && ( amount > 0.1 || chance < 1.0 ) )
      p -> ember_react = p -> sim -> current_time() + p -> total_reaction_time();
    else if ( p -> resources.current[RESOURCE_BURNING_EMBER] >= 1.0 )
      p -> ember_react = p -> sim -> current_time();
    else
      p -> ember_react = timespan_t::max();
  }