def render_move(self, ignore_tail=False):
# moving snake to the next position
render = []
new_head = self.next_position()
self.body.appendleft(new_head)
# draw head in the next position
render.append(Draw(new_head.x, new_head.y, self.CH_HEAD, self.color))
# draw body in the old place of head
render.append(
Draw(self.body[1].x, self.body[1].y, self.CH_BODY, self.color))
# save current direction of the head
self.current_direction = self.direction
# if we grow this turn, the tail remains in place
if self.grow > 0:
self.grow -= 1
self.grew = True
else:
self.grew = False
# otherwise the tail moves
old_tail = self.body.pop()
if not ignore_tail:
render.append(
Draw(old_tail.x, old_tail.y, self.CH_VOID, self.COLOR_0))
new_tail = self.body[-1]
render.append(
Draw(new_tail.x, new_tail.y, self.CH_TAIL, self.color))
return render
def render_game_over(self):
render = []
# dead snake
for i, pos in enumerate(self.snake):
if i == 0:
render.append(Draw(pos.x, pos.y, self.DEAD_HEAD_CHAR, 0))
elif i == len(self.snake) - 1:
render.append(Draw(pos.x, pos.y, self.DEAD_TAIL_CHAR, 0))
else:
render.append(Draw(pos.x, pos.y, self.DEAD_BODY_CHAR, 0))
return render
def render_game_over(self):
render = []
# dead snake
for i in range(0, len(self.snake)):
pos = self.snake[i]
if i == 0:
render.append(Draw(pos.x, pos.y, self.DEAD_HEAD_CHAR, 0))
elif i == len(self.snake) - 1:
render.append(Draw(pos.x, pos.y, self.DEAD_TAIL_CHAR, 0))
else:
render.append(Draw(pos.x, pos.y, self.DEAD_BODY_CHAR, 0))
return render
def create(self):
assert not self.grow
assert not self.body
assert not self.direction
# try to spawn snake at some distance from world's borders
distance = settings.INIT_LENGTH + settings.INIT_MIN_DISTANCE_BORDER
x = randint(distance, World.SIZE_X - distance)
y = randint(distance, World.SIZE_Y - distance)
self.direction = self.current_direction = self.DIRECTIONS[randint(
0, 3)]
# create snake from tail to head
render = []
pos = Position(x, y)
for i in range(0, settings.INIT_LENGTH):
target = self._world[pos.y][pos.x]
if target.char != self.CH_VOID:
raise SnakePlacementError(
'Cannot place snake on %r because the position '
'is occupied by %r', pos, target)
if i == 0:
char = self.CH_TAIL
elif i == settings.INIT_LENGTH - 1:
char = self.CH_HEAD
else:
char = self.CH_BODY
self.body.appendleft(pos)
render.append(Draw(pos.x, pos.y, char, self.color))
pos = self.next_position()
return render
def render_game_over(self):
render = []
# dead snake
for i, pos in enumerate(self.body):
if i == 0:
render.append(
Draw(pos.x, pos.y, self.CH_DEAD_HEAD, self.COLOR_0))
elif i == len(self.body) - 1:
render.append(
Draw(pos.x, pos.y, self.CH_DEAD_TAIL, self.COLOR_0))
else:
render.append(
Draw(pos.x, pos.y, self.CH_DEAD_BODY, self.COLOR_0))
return render
def render_text(self, text, color):
# render in the center of play field
posy = int(settings.FIELD_SIZE_Y / 2)
posx = int(settings.FIELD_SIZE_X / 2 - len(text) / 2)
render = []
for i in range(0, len(text)):
render.append(Draw(posx + i, posy, text[i], color))
return render
def spawn_stone(self, right_now=False):
render = []
if right_now or\
randint(1, 100) <= settings.STONE_SPAWN_RATE:
x, y = self._get_spawn_place()
if x and y:
render += [Draw(x, y, '#', 0)]
return render
def spawn_digit(self, right_now=False):
render = []
if right_now or\
randint(1, 100) <= settings.DIGIT_SPAWN_RATE:
x, y = self._get_spawn_place()
if x and y:
char = str(randint(1, 9))
color = randint(1, settings.NUM_COLORS)
render += [Draw(x, y, char, color)]
return render
def _render_text(text, color):
# render in the center of play field
pos_y = int(World.SIZE_Y / 2)
pos_x = int(World.SIZE_X / 2 - len(text)/2)
render = []
for i in range(0, len(text)):
render.append(Draw(pos_x + i, pos_y, text[i], color))
return render
def render_move(self):
# moving snake to the next position
render = []
new_head = self.next_position()
self.snake.appendleft(new_head)
# draw head in the next position
render.append(Draw(new_head.x, new_head.y, self.HEAD_CHAR, self.color))
# draw body in the old place of head
render.append(
Draw(self.snake[1].x, self.snake[1].y, self.BODY_CHAR, self.color))
# if we grow this turn, the tail remains in place
if self.grow > 0:
self.grow -= 1
else:
# otherwise the tail moves
old_tail = self.snake.pop()
render.append(Draw(old_tail.x, old_tail.y, " ", 0))
new_tail = self.snake[-1]
render.append(
Draw(new_tail.x, new_tail.y, self.TAIL_CHAR, self.color))
return render
def spawn_digit(self, right_now=False):
render = []
if right_now or randint(1, 100) <= settings.DIGIT_SPAWN_RATE:
x, y = self._get_spawn_place()
if x and y:
char = str(1)
color = self._pick_random_color()
render += [Draw(x, y, char, color)]
return render
def render_new_snake(self):
# try to spawn snake at some distance from world's borders
distance = settings.INIT_LENGHT + 2
x = randint(distance, settings.FIELD_SIZE_X - distance)
y = randint(distance, settings.FIELD_SIZE_Y - distance)
self.direction = self.DIRECTIONS[randint(0, 3)]
# create snake from tail to head
render = []
pos = Position(x, y)
for i in range(0, settings.INIT_LENGHT):
self.snake.appendleft(pos)
if i == 0:
char = self.TAIL_CHAR
elif i == settings.INIT_LENGHT - 1:
char = self.HEAD_CHAR
else:
char = self.BODY_CHAR
render.append(Draw(pos.x, pos.y, char, self.color))
pos = self.next_position()
return render
def spawn_digit(self):
x = randint(0, settings.FIELD_SIZE_X - 1)
char = str(randint(0,9))
self._draw = Draw(x, char)
