刚接触pygame，写个流星练练手
import random
import pygame
# 流星类
class Star(object):
"""用于指定流星的位置，移动向量，星尾长度"""
def __init__(self, point, screen, all_speed):
self.startx = point[0]
self.starty = point[1]
screen_rect = screen.get_rect() # 获得屏幕矩形
self.speed_x = (self.startx - screen_rect.centerx) / 25 * all_speed[speed_index] # 水平方向速度设置
self.speed_y = (self.starty - screen_rect.centery) / 25 * all_speed[speed_index] # 竖直方向速度设置
self.end_x = self.startx + self.speed_x * 5 # 星尾
self.end_y = self.starty + self.speed_y * 5 # 星尾
self.color = (random.randint(0, 255), random.randint(0, 255), random.randint(0, 255))
def blitme(self):
pygame.draw.aaline(screen, self.color, (star.startx, star.starty), (star.end_x, star.end_y), 100) # 绘制流星轨迹
# 屏幕上流星检测
def on_screen(point):
if 0 < point[0] < 1600 and 0 < point[1] < 900 and not(point[0] == 800 and point[1] == 450):
return point
# 初始化设置
pygame.init()
screen = pygame.display.set_mode((1600, 900))
screen_rect = screen.get_rect()
points = [] # 用于存储流星的点集
for i in range(10): # 生成十颗流星
point = [random.randint(600, 1000), random.randint(250, 650)]
points.append(point)
# 全局速度（加速和反向加速）
n = 0
all_speed = []
speed_index = 0 # 全局速度列表索引
while n < 1000:
i = n/100
all_speed.append(i) # 全局速度
n += 1
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# 主循环
while True:
for event in pygame.event.get():
if event.type== pygame.QUIT:
pygame.quit()
exit()
screen.fill(0)
pygame.time.Clock().tick(96)
if speed_index < 999:
speed_index += 1 # 速度加快
else:
speed_index = 0
all_speed.reverse() # 反向加速
# 新增一颗流星
point1 = [random.randint(600, 1000), random.randint(250, 650)]
points.append(point1)
# 画流星
for point in points:
star = Star(point, screen, all_speed)
star.blitme()
# 流星移动
point[0] = star.startx + star.speed_x # 崩溃的电脑
point[1] = star.starty + star.speed_y # 崩溃的电脑
points = list(filter(on_screen, points)) # 内存控制
pygame.display.update()
"""
1、随机坐标的生成和存储
2、流星类
3、流星速度控制
4、星尾长度
5、帧率控制
6、内存管理
7、全局速度控制
"""
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