Author | Linch |

Submission date | 2016-09-07 23:18:27.813758 |

Rating | 6113 |

Matches played | 406 |

Win rate | 57.88 |

Use rpsrunner.py to play unranked matches on your computer.

```
#MetaHenny v1
#Fixed Bugs and added a version that looks only at the last 20 moves.
import random
def our_output(num):
if num==0:
return "R"
elif num==1:
return "P"
elif num==2:
return "S"
def read_input(char):
if char=="R":
return 0
if char=="P":
return 1
if char=="S":
return 2
if input == "":
opp_moves = ""
our_moves = ""
allmoves = ""
score = [0]*12
score[0] = 10 #Bias us towards classical Henny
Henny = [random.randint(0,2) for x in range(12)]
win = 0
decayedwin = 0
quit = False
decay=.95
else:
move = read_input(input)
opp_moves = opp_moves+str(move)
allmoves = allmoves+str(move)
opp_moves20 = opp_moves[-20:]
our_moves20 = our_moves[-20:]
decayedwin = decayedwin*.9
if (attack-move)%3==1:
win+=1
decayedwin+=1
elif (attack-move)%3==2:
win -= 1
decayedwin+=1
#scores the previous round
score = [x*decay for x in score]
scoring = [move==x for x in Henny]
for j in range(12):
score[j] = score[j]+scoring[j]
max_value = max(score)
max_index = score.index(max_value)
#creates the new moves
Henny[0] = int(random.choice(opp_moves))
Henny[1] = int(random.choice(our_moves))
Henny[2] = int(random.choice(allmoves))
Henny[3] = int(random.choice(opp_moves20))
for i in range(4):
Henny[i+4] = (Henny[i]+1)%3
Henny[i+8] = (Henny[i]+2)%3
if len(opp_moves)>=50 and len(opp_moves)<200:
decay-=.001
#If we are losing, cut our losses
if win<=-50:
quit=True
#If we won in the past but are losing now (eg, playing against a slower, better, algorithm), quit while ahead.
if win>5 and decayedwin<=-5:
quit=True
if len(opp_moves)<=random.randint(3,40) or max_value<2.5 or quit:
attack = random.randint(0,2)
else:
attack = (Henny[max_index]+1)%3
our_moves += str(attack)
allmoves += str(attack)
output = our_output(attack)
output
```