pokedex/formulae.py

   1 # encoding: utf8
   2 """Faithful translations of calculations the games make."""
   3
   4 def calculated_stat(base_stat, level, iv, effort):
   5     """Returns the calculated stat -- i.e. the value actually shown in the game
   6     on a Pokémon's status tab.
   7     """
   8
   9     # Remember: this is from C; use floor division!
  10     return (base_stat * 2 + iv + effort // 4) * level // 100 + 5
  11
  12 def calculated_hp(base_hp, level, iv, effort):
  13     """Similar to `calculated_stat`, except with a slightly different formula
  14     used specifically for HP.
  15     """
  16
  17     # Shedinja's base stat of 1 is special; its HP is always 1
  18     if base_hp == 1:
  19         return 1
  20
  21     return (base_hp * 2 + iv + effort // 4) * level // 100 + 10 + level
  22
  23 def earned_exp(base_exp, level):
  24     """Returns the amount of EXP earned when defeating a Pokémon at the given
  25     level.
  26     """
  27
  28     return base_exp * level // 7