Happiness in Generation IV is much the same as it is in Generation III, taking all of the new berry features of Emerald into Diamond and Pearl.
In Eterna City, a girl in the Pokémon Center will give away a Pokétch app that shows how much the Pokémon in the player's party like the player. Maximum happiness is represented by two big hearts.
Dr. Footstep, the sole resident of the Footstep House on Route 213, will also tell a Pokémon's happiness, albeit in a roundabout way which differs among Pokémon species. At maximum happiness, he will give the Pokémon in question a ribbon.
Happiness is modified in the following ways:
In Eterna City, a girl in the Pokémon Center will give away a Pokétch app that shows how much the Pokémon in the player's party like the player. Maximum happiness is represented by two big hearts.
Dr. Footstep, the sole resident of the Footstep House on Route 213, will also tell a Pokémon's happiness, albeit in a roundabout way which differs among Pokémon species. At maximum happiness, he will give the Pokémon in question a ribbon.
Happiness is modified in the following ways:
- Gaining a level (+2)
- Walking 256 steps (+1)
- Stat modifiers (+2)
- Using Soothe Bell (+1 for each other positive event)
- Massage in Veilstone City by girl in house nearest to Veilstone Gym (+3)
- Massage at Ribbon Syndicate in Resort Area (+6)
- Using Potions and healing items
- Faint (-1)
- Energypowder (-5)
- Heal Powder (-5)
- Energy Root (-10)
- Revival Herb (-15)
- Trading a Pokémon (reset to 70)
- Migrating it from a GBA Game (reset to 70)