一、pygame
import pygame
if __name__ == '__main__':
pygame.init()
screen = pygame.display.set_mode((800,800))
screen.fill((255,255,255))
# 设置窗口标题
pygame.display.set_caption('游戏事件')
pygame.display.flip()
while True:
"""
QUIT:关闭按钮被点击事件
MOUSEBUTTONDOWN:鼠标按下
MOUSEBUTTONUP:鼠标弹起
MOUSEMOTION:鼠标移动
KEYDOWN:键盘按键被按下
KEYUP:键盘按键弹起
"""
# 每次循环检查有没有事件发生
for event in pygame.event.get():
# 不同类型的事件对应的type值不一样
if event.type == pygame.QUIT:
exit()
# 鼠标相关事件
# pos属性，获取鼠标事件产生的位置
if event.type == pygame.MOUSEBUTTONDOWN:
print('鼠标按下',event.pos)
if event.type == pygame.MOUSEBUTTONUP:
print('鼠标弹起',event.pos)
if event.type == pygame.MOUSEMOTION:
print('鼠标移动',event.pos)
# 键盘相关事件
# key属性，被按的按键对应的值的编码
if event.type == pygame.KEYDOWN:
print('键盘按键被按下',chr(event.key))
if event.type == pygame.KEYUP:
print('键盘按键弹起',chr(event.key))
二、鼠标事件的应用
import pygame
from random import randint
def rand_color():
return randint(0, 255),randint(0, 255), randint(0, 255)
def draw_ball(screen,pos):
pygame.draw.circle(screen, rand_color(), event.pos, randint(10, 20))
# 只要屏幕上的内容有更新，都需要调用下面这两个方法中的一个
# pygame.display.updaye
pygame.display.update()
# 写一个函数，判断制定的点是否在指定的矩形范围中
def is_in_rect(point,rect):
x , y = point
rx ,ry ,rw,rh =rect
if (rx <= x <= rx +rw) and (ry <= y <= ry +rh):
return True
return False
# 写一个函数，画一个按钮
def draw_button(screen,bth_color,title_color):
if __name__ == '__main__':
pygame.init()
screen = pygame.display.set_mode((600,400))
screen.fill((255,255,255))
pygame.display.ser_caption('鼠标事件')
# 画一个按钮
# 矩形框
pygame.draw.rect(screen,(0,255,0),(100,100,100,60))
# 文字
font = pygame.font.SysFont('Times',30)
title = font.render('点我呀',True,(255,0,0))
screen.blit(title,(120,120))
pygame.display.flip()
while True:
for event in pygame.event.get():
# 退出
if event.type == pygame.QUIT:
exit()
if event.type == pygame.MOUSEBUTTOMDOWN:
# 在指定的坐标画一个球
# draw_ball(screen,event.pos)
if is_in_rect(event.pos,(100,100,100,60)):
print('按中按钮')
三、鼠标事件的应用2
- 要求: 先在屏幕上显示一张图片，鼠标按下移动的时候，拽着图片跟着一起动，鼠标弹起就不动了
import pygame
# 写一个函数，判断一个点是否在某个范围内
def is_in_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((600,400))
screen.fill((255,255,255))
pygame.display.set_caption('图片拖拽')
# 显示一张图片
image = pygame.image.load('./896262.png')
image = pygame.transform.scale(image, (80, 50))
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_in_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
# 鼠标移动对应的事件
if event.type == pygame.MOUSEMOTION:
if is_move:
screen.fill((255,255,255))
x,y = event.pos
image_w ,image_h = image.get_size()
# 保证鼠标在图片中心
image_y = y-image_h/2
image_x = x-image_w/2
screen.blit(image,(image_x,image_y))
pygame.display.update()
四、动画效果
import pygame
from random import randint
def static_page(screen):
"""
页面上的静态内容
"""
# 静态文字
font = pygame.font.SysFont('Times',40)
title = font.render('Welcome',True,(0,0,0))
screen.blit(title,(50,50))
def animation_title(screen):
font = pygame.font.SysFont('Times', 40)
title = font.render('Python', True, (randint(0,255), randint(0,255), randint(0,255)))
screen.blit(title,(200,200))
if __name__ == '__main__':
pygame.init()
screen = pygame.display.set_mode((600,400))
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()
# 在下面去写每一帧要显示的内容
"""
程序执行到这个位置，cup休息一段时间再执行后面的代码(线程在这儿阻塞指定的时间)
单位：毫秒（1000ms = 1 s)
"""
pygame.time.delay(100)
# 动画前要将原来的内容全部清空
screen.fill((255,255,255))
static_page(screen)
animation_title(screen)
# 内容展示完成后，要跟新到屏幕上
pygame.display.update()
五、ballgame
import pygame
def draw_ball(place,color,pos):
"""
画球
"""
pygame.draw.circle(place,color,pos,20)
Up = 273
Down = 274
Left = 276
Right = 275
if __name__ == '__main__':
pygame.init()
screen = pygame.display.set_mode((600,400))
screen.fill((255,255,255))
pygame.display.flip()
# 保存初始坐标
ball_x = 100
ball_y = 100
x_speed = 1
y_speed = 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_speed = -2
x_speed = 0
elif event.key == Down:
y_speed = 2
x_speed = 0
elif event.key == Right:
y_speed = 0
x_speed = 2
elif event.key == Left:
y_speed = 0
x_speed = -2
# print(event.key)
# 每次循环让球的x和y坐标变化
ball_x +=x_speed
ball_y +=y_speed
#边界检测
if ball_x+20 >=600 or ball_x<= 20 or ball_y + 20>= 400 or ball_y <=20:
print('游戏结束')
exit()
# ball_x = 600 -20
# x_speed *=-1
# 刷新屏幕，
screen.fill((255, 255, 255))
pygame.time.delay(3)
draw_ball(screen,(255,0,0),(ball_x,ball_y))
pygame.display.update()
六、多个球一起动
import pygame
import random
random_color = random.randint(0,255),random.randint(0,255),random.randint(0,255)
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
# 每个球要保存：半径、圆心坐标、颜色、x速度、y速度
all_balls = [
{'r':random.randint(10,20),
'pos':(100,100),
'color':random_color,
'x_speed':random.randint(-3,3),
'y_speed':random.randint(-3,3)},
{'r':random.randint(10,20),
'pos':(200,200),
'color':random_color,
'x_speed':random.randint(-3,3),
'y_speed':random.randint(-3,3)},
{'r':random.randint(10,20),
'pos':(300,300),
'color':random_color,
'x_speed':random.randint(-3,3),
'y_speed':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_speed':random.randint(-3,3),
'y_speed':random.randint(-3,3)
}
# 保存球
all_balls.append(ball)
# 刷新界面
screen.fill((255,255,255))
for ball_dict in all_balls:
# 取出球原来的x坐标和y坐标以及他们的速度
x,y = ball_dict['pos']
x_speed = ball_dict['x_speed']
y_speed = ball_dict['y_speed']
x += x_speed
y += y_speed
pygame.draw.circle(screen,ball_dict['color'],(x,y),ball_dict['r'])
# 更新球对应的坐标
ball_dict['pos'] = x,y
pygame.time.delay(3)
pygame.display.update()
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