1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
#!/usr/bin/env python
"""New and improved bot, OPTIMISED!!"""
import random
import sys
from common import *
def peter_bot(board, (HEADX, HEADY)):
HEIGHT = len(board)
WIDTH = len(board[0])
SNAKE_BODY = board[HEADY][HEADX]
SNAKE_BODY = SNAKE_BODY.lower()
SNAKE_HEAD = SNAKE_BODY.upper()
def get_cell(board, x, y):
if x < 0 or x >= WIDTH or y < 0 or y >= HEIGHT:
raise KeyError, 'out of range.'
return board[y][x]
md_two = {
(-1, 0, 'l'): ((-2, 0), (-1, 1), (-1, -1)),
(0, -1, 'u'): ((-1, -1), (1, -1), (0, -2)),
(1, 0, 'r'): ((2, 0), (1, 1), (1, -1)),
(0, 1, 'd'): (((0, 2), (-1, 1), (1, 1))),
}
max_score = 0
max_moves = []
for (dx, dy, move), adj in md_two.items():
score = 0
try:
square = get_cell(board, HEADX + dx, HEADY + dy)
except KeyError:
continue
if square == Squares.APPLE:
score += 2
elif square != Squares.EMPTY:
continue # Definitely cannot move here.
for ddx, ddy in adj:
try:
square = get_cell(board, HEADX + ddx, HEADY + ddy)
except KeyError:
score -= 1
continue
if square == Squares.APPLE:
score += 2
elif square == Squares.EMPTY:
score += 1
elif square == SNAKE_BODY:
score -= 1
elif square.isupper():
score += 3
if score == max_score:
max_moves.append(move)
elif score > max_score:
max_score = score
max_moves = [move]
if max_moves:
return random.choice(max_moves)
else:
return 'U' # Suicide!
|
