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from string import ascii_lowercase as lowercase, ascii_uppercase as uppercase
alphabet = lowercase + uppercase
directions = {
'U': (0, -1),
'D': (0, 1),
'L': (-1, 0),
'R': (1, 0),
}
EMPTY = '.'
APPLE = '*'
WALL = '#'
is_empty = EMPTY.__eq__
is_apple = APPLE.__eq__
is_wall = WALL.__eq__
def is_vacant(cell):
return cell in (EMPTY, APPLE)
def is_blocking(cell):
return cell not in (EMPTY, APPLE)
def is_snake(cell):
return cell in alphabet
def is_snake_head(cell):
return cell in uppercase
def is_snake_body(cell):
return cell in lowercase
def is_enemy_snake(cell, me):
assert me.isupper()
return is_snake(cell) and cell.upper() != me
def is_my_snake(cell, me):
assert me.isupper()
return cell.upper() == me
def get_size(board):
height = len(board)
width = len(board[0])
return width, height
def in_bounds(x, y, width, height):
return (
x >= 0 and x < width and
y >= 0 and y < height
)
def get_cell(board, x, y, wrap=True):
width, height = get_size(board)
if wrap:
x %= width
y %= height
elif not in_bounds(x, y, width, height):
return None
return board[y][x]
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