Inspired by Zelda - Twilight Princess I made this energy-effect yesterday.
Maybe the code is useful for those who wonder how to make this kind of effect. - No shader used - Usage of Call-by-Reference to handle over the position and give back the entity-pointer - Press "p" to activate the effect
Well, color is just a matter of the texture. The energy flashs that leave the "ball" work the same.
However, that was the first time I actually saw, what operations are needed to achieve that effect since you can move the view behind it and watch it for some time.