players/FollowerPlayer.py

   1 from troncode_values import *
   2 import math
   3
   4 class FollowerPlayer( object ):
   5     """Follower Player."""
   6
   7     # Matrix of
   8     # LeftOrRight{-1,0,1} X UpOrDown{-1,0,1} -> Dir{ 0, 1, 2, 3 }
   9     whereTable  = [ [ 0, 3, 0 ],
  10                     [ 0, None, 2 ],
  11                     [ 2, 1, 2 ] ]
  12
  13     # Matrix of
  14     # CurrentDir{0,1,2,3} X NextDir{0,1,2,3} -> Dir( -1: Left, None: Left/Right, 1: Right )
  15     dirTable = [ [ 0, 1, None, -1 ],
  16                  [ -1, 0, 1, None ],
  17                  [ None, -1, 0, 1 ],
  18                  [ 1, None, -1, 0 ] ]
  19
  20     def __init__( self ):
  21         self.m_step = 0
  22
  23     def GetColour( self ):
  24         return ( 255, 128, 0 )
  25
  26     def GetName():
  27         return "Follower"
  28     GetName = staticmethod( GetName )
  29
  30     def GetDir( self, position, direction, gameboard ):
  31         """Stick as close as possible to any wall you find."""
  32
  33         pos = gameboard.GetPlayerPositions( )
  34         #print "my-position: ", position
  35         #print "my-direction: ", direction
  36         for p in pos:
  37             if p[0] == position:
  38                 pass
  39             else:
  40                 #print "your-position: ", p[0]
  41                 #print "your-direction: ", p[1]
  42                 if p[0][0] < position[0]:
  43                     leftOrRight = -1
  44                 elif  p[0][0] == position[0]:
  45                     leftOrRight = 0
  46                 else:
  47                     leftOrRight = 1
  48
  49                 if p[0][1] < position[1]:
  50                     upOrDown = -1
  51                 elif  p[0][1] == position[1]:
  52                     upOrDown = 0
  53                 else:
  54                     upOrDown = 1
  55
  56                 #print "LeftOrRight: ", leftOrRight
  57                 #print "UpOrDown: ", upOrDown
  58
  59                 where = FollowerPlayer.whereTable[ leftOrRight + 1 ][upOrDown + 1 ]
  60                 #print "---> where: ", where
  61                 if where is None:
  62                     pass
  63                 elif where == -1 :
  64                     pass
  65                 else:
  66                     dir = FollowerPlayer.dirTable[ direction ][ where ]
  67                     #print "---> dir: ", dir
  68                     if dir==-1 or dir is None:
  69                         pass
  70                     else:
  71                         return dir
  72
  73         self.m_step += 1
  74
  75         ret_dir = direction
  76
  77         # Turn left if we can
  78         if gameboard.GetRelativePixel( position, direction, 0, -1 ) == 0:
  79             ret_dir = gameboard.TurnLeft( ret_dir )
  80
  81         # Don't enter tunnels of width 1
  82         if ( gameboard.GetRelativePixel( position, ret_dir, 1, 1 ) > 0 and
  83              gameboard.GetRelativePixel( position, ret_dir, 1, -1 ) > 0 ):
  84             ret_dir = gameboard.TurnRight( ret_dir )
  85
  86         # Avoid immediate death by turning right
  87         for i in range( 4 ):
  88             if gameboard.GetRelativePixel( position, ret_dir, 1, 0 ) == 0:
  89                 break
  90             ret_dir = gameboard.TurnRight( ret_dir )
  91
  92         return ret_dir