You should read the book "The Way to Happiness" by L. Ron Hubbard. This books shows how your actions affect your happiness and unhappiness and which actions bring about happiness in your life and can effect how you evolve.
you must do battles and there happiness goes and at some point they evolve.(P.Spokemon that evolve with happiness all evolve at a certain amount or number of happiness.)
On full Happiness. :)
To evolve a Flying Pichu, you must get it to full happiness, then you can evolve it into a Flying Pikachu.
Golbat evolve into crobat with happiness
Happiness
Happiness will evolve it into togetic then a shiny stone to evolve to togekiss
Chimcheo, first get it max happiness and it will evolve
a happiny evolves with happiness, not by level. when the happiness is really high, level it once, and it will evolve into chansey.
it will need about 100 happiness
Riolu does not evolve at a specific level, its evolution is related to happiness. While levelling up does increase happiness, in theory a Riolu can evolve at Lv2 if happiness is increased by other methods.
Riolu evolves not from a level, but from happiness. It must evolve in the daytime. So when its happiness is maxed out and its daytime, when it grows up a level, it should evolve.
It evolves by happiness!!!