鼠标事件的应用：
import pygame
#写一个函数判断一个点是否在指定范围内
def is_rect(pos,rect):
x,y =pos
rx,ry,rw,rh = rect
if (rx <= x <=rx+rw)and(ry <= y <= ry +rh):
return True
return False
if __name__ == '__main__':
pygame.init()
screen = pygame.display.set_mode((600,600))
screen.fill((255,255,255))
pygame.display.set_caption('图片拖拽')
#显示一张图片
image = pygame.image.load('./luo.jpg')
image_x=100
image_y=100
screen.blit(image,(image_x,image_y))
pygame.display.flip()
# 用来存储图片是否可以移动
is_move =False
while True:
for event in pygame.event.get():
if event.type == pygame.QUIT:
exit()
# 鼠标按下，让状态变成可以移动
if event.type == pygame.MOUSEBUTTONDOWN:
w,h = image.get_size()
if is_rect(event.pos,(image_x,image_y,w,h)):
is_move =True
#鼠标弹起，让状态变成不可以移动
if event.type == pygame.MOUSEBUTTONUP:
is_move =False
#鼠标移动事件
if event.type ==pygame.MOUSEMOTION:
if is_move:
screen.fill((255,255,255))
x,y = event.pos
image_w,image_h=image.get_size()
#保证鼠标在图片的中心
image_x=x-image_h/2
image_y=y-image_w/2
screen.blit(image,(image_x,image_y))
pygame.display.update()
image.png
image.png
动画效果
import pygame
from random import randint
def static_page(screen):
# 页面上显示静态内容
# 静态文字
font = pygame.font.SysFont('Time',40)
title = font.render('welcome my word',True,(0,0,0))
screen.blit(title,(200,200))
def animation_title(screen):
# 字体颜色变化
font = pygame.font.SysFont('Time', 40)
title = font.render('happy birthday', True, (randint(0,255), randint(0,255), randint(0,255)))
screen.blit(title, (100, 100))
if __name__ == '__main__':
pygame.init()
screen = pygame.display.set_mode((600,600))
screen.fill((255,255,255))
static_page(screen)
pygame.display.flip()
while True:
# for里面的代码只有事件发生后才会执行
for event in pygame.event.get():
if event.type ==pygame.QUIT:
exit()
# 在下面写每一针要显示的内容
"""
程序执行到这个位置，CPU休息一会再执行，就是阻塞一段时间
单位：毫秒 （1000ms == 1s）
"""
pygame.time.delay(150)
screen.fill((255,255,255))
static_page(screen)
animation_title(screen)
# 内容占上市到完成后，更新到屏幕上
pygame.display.update()
image.png
image.png
通过键盘控制产生随机颜色的的球， 再通过键盘的的上下左右控制球的运动轨迹
import pygame
def draw_ball(place,color,pos):
"""画球"""
pygame.draw.circle(place,color,pos,20)
# 方向键对应的值
up = 273
Dowm = 274
Left = 276
Right = 275
if __name__ == '__main__':
pygame.init()
screen = pygame.display.set_mode((600,600))
screen.fill((255,255,255))
pygame.display.flip()
# 保存初始坐标
ball_x =100
ball_y =100
x_spead = 2
y_spead = 0
while True:
for event in pygame.event.get():
if event.type==pygame.QUIT:
exit()
if event.type == pygame.KEYDOWN:
if event.key == up:
y_spead = -1
x_spead = 0
elif event.key == Dowm:
y_spead = 1
x_spead = 0
elif event.key == Right:
y_spead = 0
x_spead = 1
elif event.key == Left:
y_spead = 0
x_spead = -1
#刷新屏幕
screen.fill((255,255,255))
ball_x += x_spead
ball_y += y_spead
if ball_x +20 >= 600:
ball_x = 600-20
x_spead *= -1
if ball_x +20 <= 0:
ball_x = 0
x_spead *= -1
if ball_y +20 >= 600:
ball_y = 600-20
y_spead *= -1
if ball_y +20 <= 0:
ball_y = 0
y_spead *= -1
draw_ball(screen,(255,0,0),(ball_x,ball_y))
pygame.display.update()
image.png
image.png
鼠标点击产生多个会动的小球(这个是来搞笑的大家看前面的就可以了，忽略这个)不过很好玩，你会看到小时的小球他们想家了自己就会回来了，555555，你们来帮我看看他们怎么才能不离家出走吧！
import pygame
import random
# def draw_ball(place,color,pos):
# """画球"""
# pygame.draw.circle(place,color,pos,20)
def random_color ():
return (random.randint(0,255),random.randint(0,255),random.randint(0,255))
ball_x = 100
ball_y = 100
x_spead = 2
y_spead = 0
ball_x += x_spead
ball_y += y_spead
if __name__ == '__main__':
pygame.init()
screen = pygame.display.set_mode((600,400))
screen.fill((255,255,255))
pygame.display.flip()
# all_balls中保存多个球
# 每一个球都要保存：半径、圆心、颜色、x速速\y速度
all_balls = [
{'r':random.randint(10,20),
'pos':(100,100),
'color': random_color(),
'x_apeed':random.randint(-3,3),
'y_apeed': random.randint(-3, 3)
},
{'r': random.randint(10, 20),
'pos': (300, 300),
'color': random_color(),
'x_apeed': random.randint(-3, 3),
'y_apeed': random.randint(-3, 3)
}
]
while True:
for event in pygame.event.get():
if event.type == pygame.QUIT:
exit()
if event.type == pygame.MOUSEBUTTONDOWN:
#点一下鼠标创建一个球
ball = {
'r':random.randint(10,25),
'pos':event.pos,
'color': random_color(),
'x_apeed':random.randint(-3,3),
'y_apeed': random.randint(-3, 3)
}
# 保存球
all_balls.append(ball)
# 刷新界面
screen.fill((255,255,255))
# ball_x += x_spead
# ball_y += y_spead
for ball_dict in all_balls:
#取出球原来的原来的坐标和速度
x,y=ball_dict['pos']
x_speed = ball_dict['x_apeed']
y_speed = ball_dict['y_apeed']
x += x_speed
y += y_speed
if ball_x + 20 >= 600:
ball_x = 600 - 20
x_spead *= -1
if ball_x + 20 <= 0:
ball_x = 0
x_spead *= -1
if ball_y + 20 >= 400:
ball_y = 400 - 20
y_spead *= -1
if ball_y + 20 <= 0:
ball_y = 0
y_spead *= -1
pygame.draw.circle(screen,ball_dict['color'],(x,y),ball_dict['r'])
#更新球的对应坐标
ball_dict['pos'] = x,y
pygame.display.update()
image.png