一、pygame事件
import pygame
pygame.init()
screen = pygame.display.set_mode((600,400))
screen.fill((255,255,255))
pygame.display.set_caption('游戏事件')
pygame.display.flip()
while True:
for event in pygame.event.get():
if event.type == pygame.QUIT:
exit()
if event.type == pygame.MOUSEBUTTONDOWN:
print('鼠标被按下！',event.pos)#获取鼠标按下的坐标
if event.type == pygame.MOUSEBUTTONUP:
print('鼠标弹起！',event.pos)# 获取鼠标弹起的坐标
if event.type == pygame.MOUSEMOTION:
print('鼠标移动！',event.pos)
二、鼠标事件的运用
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.flip()
pygame.display.update()
# 写一个函数，判断指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,but_color,tit_color):
# 画个按钮
"""矩形框"""
pygame.draw.rect(screen, but_color, (100, 100, 100, 60))
"""文字"""
font = pygame.font.SysFont('Times', 30)#选择字体和笔的粗细
title = font.render('click', True, tit_color)#字的内容颜色等
screen.blit(title, (120, 120))
if __name__ == '__main__':
pygame.init()
screen = pygame.display.set_mode((600,400))
screen.fill((255,255,255))
pygame.display.set_caption('鼠标点击')
# #画个按钮
draw_button(screen,(0,255,0),(255,0,0))
# """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('click',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.MOUSEBUTTONDOWN:
#在指定的位置化一个球
#draw_ball(screen,event.pos)
if is_in_rect(event.pos,(100,100,100,60)):
draw_button(screen,(0,100,0),(100,0,0))
pygame.display.update()
if event.type == pygame.MOUSEBUTTONUP:
if is_in_rect(event.pos, (100, 100, 100, 60)):
draw_button(screen,(0,255,0),(255,0,0))
pygame.display.update()
if event.type == pygame.MOUSEMOTION:
screen.fill((255,255,255))
draw_button(screen,(0,255,0),(255,0,0))
draw_ball(screen,event.pos)
三、鼠标点击事件
# 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
if __name__ == '__main__':
pygame.init()
screen = pygame.display.set_mode((600, 400))
screen.fill((255, 255, 255))
pygame.display.set_caption('图片移动')
pygame.display.flip()
# 显示图片
image = pygame.image.load('./瀑布.jpg')
image_x = 100
image_y = 100
screen.blit(image,(image_x,image_y))
# 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
#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()
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 #得到鼠标的坐标
image_w, image_h = image.get_size()
# 保证鼠标在图片的中心
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（关键在于理解动画是一张张的图片展示出来的）
动画原理：不断的刷新界面上的内容（一帧一帧的画）-------想想每一张画面怎么画上去
"""
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,(200,200))
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, (100, 100))
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循环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()
#在下面写每一帧要显示的内容
"""程序执行到这个位置，CPU休息一段时间再执行后面的代码（线程在这里阻塞一段时间）
cpu执行的事件单位是毫秒，1000毫秒 = 1秒"""
pygame.time.delay(5000)
# 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，要更新到屏幕上
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()
# 通过上下左右键控制球的方向
if event.type == pygame.KEYDOWN:
if event.key == Up:
y_speed = -1
x_speed = 0
elif event.key == Down:
y_speed = 1
x_speed = 0
elif event.key == Right:
x_speed = 1
y_speed =0
elif event.key == Left:
x_speed = -1
y_speed = 0
# 刷新屏幕
screen.fill((255,255,255))
# 每次循环让球的x和y坐标变化
ball_x += x_speed
ball_y += y_speed
# 边界检查
if ball_x + 20 >= 600 or ball_x <= 20 or ball_y + 20 >= 400 or ball_y<= 20:
print('Game Over!')
exit()
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中保存多个信息
# 每个球要保存：半径、圆心左边、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(-1,0),'y_speed':random.randint(-1,1)},
{'r':random.randint(10,20),'pos':(300,300),'color':random_color,'x_speed':random.randint(-1,1),'y_speed':random.randint(-1,1)}
]
while True:
for event in pygame.event.get():
if event.type == pygame.QUIT:
exit()
if event.type == pygame.MOUSEBUTTONDOWN:
ball = {'r':random.randint(10,25),'pos':event.pos,'color':random_color,'x_speed':
random.randint(-1,1),'y_speed':random.randint(-1,1)}
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.display.update()
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