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[Code Release] Python Emulators of the Generation IV PRNGs


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The Normal PRNG:

class pkmgen4prng(object):
   def __init__(self,seed):
      self.seed =(seed * 0x41C64E6D + 0x6073)
      if self._bitLen(self.seed)>32:
          self.seed = self.seed>>self._bitLen(self.seed)-32
      object.__init__(self)
   def prngenerate16(self):
       seed = self.seed
       self.seed = (self.seed * 0x41C64E6D + 0x6073)
       if self._bitLen(self.seed)>32:
          self.seed = self.seed>>self._bitLen(self.seed)-32
       return seed>>self._bitLen(seed)-16
   def prngenerate32(self):
       firstrandom16 = self.prngenerate16()
       secondrandom16 = self.prngenerate16()
       return ((firstrandom16<<16)|secondrandom16)

   def _bitLen(self,int_type):
       length = 0
       while (int_type):
           int_type >>= 1
           length += 1
       return(length)

The GTS PRNG:

class pkmgen4gtsprng(object):
   def __init__(self,seed):
      self.seed =(seed * 0x45 + 0x1111)
      if self._bitLen(self.seed)>31:
          self.seed = self.seed>>self._bitLen(self.seed)-31
      object.__init__(self)
   def prngenerate16(self):
       seed = self.seed
       self.seed = (self.seed * 0x41C64E6D + 0x6073)
       if self._bitLen(self.seed)>31:
          self.seed = self.seed>>self._bitLen(self.seed)-31
       return seed>>self._bitLen(seed)-16
   def prngenerate32(self):
       firstrandom16 = self.prngenerate16()
       secondrandom16 = self.prngenerate16()
       return ((firstrandom16<<16)|secondrandom16)

   def _bitLen(self,int_type):
       length = 0
       while (int_type):
           int_type >>= 1
           length += 1
       return(length)

Credits:

LexyEvee/Evee (veekun.com) - for helping me fix my code and providing the gts prng constants

Edited by ILOVEPIE
No user evee
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