python图像追踪_python 路由追踪?

import pygame,sys
from math import *
pygame.init()
font1=pygame.font.SysFont(‘microsoftyaheimicrosoftyaheiui’,23)
textc=font1.render(’’,True,(250,0,0))
screen=pygame.display.set_mode((800,700),0,32)
missile=pygame.image.load(‘element/1.png’).convert_alpha()
height=missile.get_height()
width=missile.get_width()
pygame.mouse.set_visible(0)
x1,y1=100,600 #导弹的初始发射位置
velocity=800 #导弹速度
time=1/1000 #每个时间片的长度
clock=pygame.time.Clock()
A=()
B=()
C=()
while True:
for event in pygame.event.get():
if event.type==pygame.QUIT:
sys.exit()
clock.tick(300)
x,y=pygame.mouse.get_pos() #获取鼠标位置，鼠标就是需要打击的目标
distance=sqrt(pow(x1-x,2)+pow(y1-y,2)) #两点距离公式
section=velocitytime #每个时间片需要移动的距离
sina=(y1-y)/distance
cosa=(x-x1)/distance
angle=atan2(y-y1,x-x1) #两点间线段的弧度值
fangle=degrees(angle) #弧度转角度
x1,y1=(x1+sectioncosa,y1-sectionsina)
missiled=pygame.transform.rotate(missile,-(fangle))
if 0<=-fangle<=90:
A=(widthcosa+x1-width,y1-height/2)
B=(A[0]+heightsina,A[1]+height*cosa)

if 90<-fangle<=180:
    A = (x1 - width, y1 - height/2+height*(-cosa))
    B = (x1 - width+height*sina, y1 - height/2)

if -90<=-fangle<0:
    A = (x1 - width+missiled.get_width(), y1 - height/2+missiled.get_height()-height*cosa)
    B = (A[0]+height*sina, y1 - height/2+missiled.get_height())

if -180<-fangle<-90:
    A = (x1-width-height*sina, y1 - height/2+missiled.get_height())
    B = (x1 - width,A[1]+height*cosa )

C = ((A[0] + B[0]) / 2, (A[1] + B[1]) / 2)

screen.fill((0,0,0))
screen.blit(missiled, (x1-width+(x1-C[0]),y1-height/2+(y1-C[1])))
screen.blit(textc, (x,y)) #鼠标用一个红色*代替
pygame.display.update()