Aura.Channel.Skills.Music.Song.AfterPlay C# (CSharp) Method

		protected override void AfterPlay(Creature creature, Skill skill, int quality)
		{
			var playingQuality = this.GetQualityRating(quality);

			// All ranks above F have the same 3 first conditions.
			if (skill.Info.Rank >= SkillRank.RF && skill.Info.Rank <= SkillRank.R1)
			{
				if (playingQuality >= PlayingQuality.Bad)
					skill.Train(1); // Use the skill successfully.

				if (playingQuality == PlayingQuality.Good)
					skill.Train(2); // Give an excellent vocal performance.

				if (playingQuality == PlayingQuality.VeryGood)
					skill.Train(3); // Give a heavenly performance.

				// Very bad training possible till E.
				if (skill.Info.Rank <= SkillRank.RE && playingQuality == PlayingQuality.VeryBad)
					skill.Train(4); // Fail at using the skill.
			}

			// TODO: "Use the skill to grow crops faster."
			// TODO: "Grant a buff to a party member."
		}
	}