Python小游戏：火柴人爱心发射

画完之后的效果图

代码如下：

#2.14
from turtle import *
from time import sleep

def go_to(x, y):
up()
goto(x, y)
down()

def head(x,y,r):
go_to(x,y)
speed(1)
circle(r)
leg(x,y)

def leg(x,y):

turn_right(right_angle)
move_forward(distance_one_hundred_eighty_degrees)
turn_right(thirty_degrees)
move_forward(distance_one_hundred_tens_of_meters)
turn_left(one_twenty_degrees)
move_to(target=(x, y - one_hundred_eighty_degrees))
move_forward(distance_one_hund