python pygame event get_pygame.event.get() | 学步园

get events from the queue

get() -> Eventlist

get(type) -> Eventlist

get(typelist) -> Eventlist

This will get all the messages and remove them from the queue. If a type or sequence of types is given only those messages will be removed from the queue.

If you are only taking specific events from the queue, be aware that the queue could eventually fill up with the events you are not interested.

写进代码里思路就乱了，比如这个例子

background_image_filename = 'sushiplate.jpg'

import pygame

from pygame.locals import *

from sys import exit

pygame.init()

screen = pygame.display.set_mode((640, 480), 0, 32)

background = pygame.image.load(background_image_filename).convert()

x, y = 0, 0

move_x, move_y = 0, 0

while True:

for event in pygame.event.get():

if event.type == QUIT:

exit()

if event.type == KEYDOWN:

#键盘有按下？

if event.key == K_LEFT:

#按下的是左方向键的话，把x坐标减一

move_x = -1

elif event.key == K_RIGHT:

#右方向键则加一

move_x = 1

elif event.key == K_UP:

#类似了

move_y = -1

elif event.key == K_DOWN:

move_y = 1

elif event.type == KEYUP:

#如果用户放开了键盘，图就不要动了

move_x = 0

move_y = 0

#计算出新的坐标

x+= move_x

y+= move_y

screen.fill((0,0,0))

screen.blit(background, (x,y))

#在新的位置上画图

pygame.display.update()

自己又写了个模拟帮助理解

import pygame,time

pygame.init()

screen = pygame.display.set_mode((640, 480), 0, 32)

pygame.display.update()

clock=pygame.time.Clock()

outclock=pygame.time.Clock()

while True:

tt=0

for event in pygame.event.get():

if event.type == pygame.QUIT:

exit()

print 'infor: ',clock.tick()

print 'time: ',time.time()

print str(event)

tt+=1

pygame.time.delay(200)

print '************************************'

print tt

print 'out: ',outclock.tick()

print 'outtime: ',time.time()

在键盘上乱按一通，输出是介个样子

Python 2.7.5 (default, May 15 2013, 22:43:36) [MSC v.1500 32 bit (Intel)] on win32

Type "copyright", "credits" or "license()" for more information.

>>> ================================ RESTART ================================

>>>

infor: 7

time: 1374995035.72

infor: 239

time: 1374995035.96

************************************

2

out: 491

outtime: 1374995036.2

infor: 261

time: 1374995036.21

infor: 239

time: 1374995036.46

************************************

2

out: 504

outtime: 1374995036.71

infor: 263

time: 1374995036.73

infor: 246

time: 1374995036.97

************************************

2

out: 504

outtime: 1374995037.21

infor: 260

time: 1374995037.23

infor: 235

time: 1374995037.47

infor: 251

time: 1374995037.71

infor: 248

time: 1374995037.96

infor: 249

time: 1374995038.21

infor: 242

time: 1374995038.46

infor: 256

time: 1374995038.71

infor: 250

time: 1374995038.96

infor: 243

time: 1374995039.2

infor: 248

time: 1374995039.45

infor: 242

time: 1374995039.69

infor: 245

time: 1374995039.94

infor: 251

time: 1374995040.19

infor: 242

time: 1374995040.43

infor: 250

time: 1374995040.68

************************************

15

out: 3728

outtime: 1374995040.94

infor: 286

time: 1374995040.97

infor: 249

time: 1374995041.22

infor: 244

time: 1374995041.46

infor: 249

time: 1374995041.71

infor: 243

time: 1374995041.95

infor: 242

time: 1374995042.19

infor: 247

time: 1374995042.44

infor: 247

time: 1374995042.69

infor: 245

time: 1374995042.93

infor: 242

time: 1374995043.18

infor: 250

time: 1374995043.42

infor: 242

time: 1374995043.67

infor: 251

time: 1374995043.92

infor: 247

time: 1374995044.16

infor: 242

time: 1374995044.4

infor: 247

time: 1374995044.65

infor: 244

time: 1374995044.9

infor: 249

time: 1374995045.15

infor: 246

time: 1374995045.39

infor: 251

time: 1374995045.64

infor: 246

time: 1374995045.89

infor: 251

time: 1374995046.14

infor: 241

time: 1374995046.38

infor: 246

time: 1374995046.62

infor: 240

time: 1374995046.87

infor: 249

time: 1374995047.12

infor: 251

time: 1374995047.37

infor: 244

time: 1374995047.61

infor: 242

time: 1374995047.85

infor: 241

time: 1374995048.09

infor: 243

time: 1374995048.34

infor: 242

time: 1374995048.58

infor: 249

time: 1374995048.83

infor: 246

time: 1374995049.07

infor: 250

time: 1374995049.32

infor: 244

time: 1374995049.57

infor: 241

time: 1374995049.81

infor: 242

time: 1374995050.05

infor: 242

time: 1374995050.29

infor: 242

time: 1374995050.54

infor: 249

time: 1374995050.79

infor: 243

time: 1374995051.03

infor: 247

time: 1374995051.28

infor: 243

time: 1374995051.52

infor: 242

time: 1374995051.76

infor: 247

time: 1374995052.01

infor: 243

time: 1374995052.25

infor: 248

time: 1374995052.5

infor: 242

time: 1374995052.74

infor: 249

time: 1374995052.99

infor: 241

time: 1374995053.23

infor: 242

time: 1374995053.47

infor: 246

time: 1374995053.71

infor: 243

time: 1374995053.96

infor: 247

time: 1374995054.21

infor: 245

time: 1374995054.45

infor: 248

time: 1374995054.7

infor: 242

time: 1374995054.94

infor: 252

time: 1374995055.19

infor: 242

time: 1374995055.44

infor: 253

time: 1374995055.69

infor: 240

time: 1374995055.93

infor: 244

time: 1374995056.17

infor: 246

time: 1374995056.42

infor: 244

time: 1374995056.67

infor: 250

time: 1374995056.91

infor: 245

time: 1374995057.16

infor: 242

time: 1374995057.4

infor: 241

time: 1374995057.64

infor: 241

time: 1374995057.88

infor: 243

time: 1374995058.12

infor: 246

time: 1374995058.37

infor: 244

time: 1374995058.62

infor: 248

time: 1374995058.86

infor: 245

time: 1374995059.11

infor: 240

time: 1374995059.35

infor: 245

time: 1374995059.59

infor: 242

time: 1374995059.83

infor: 242

time: 1374995060.08

infor: 247

time: 1374995060.33

infor: 245

time: 1374995060.57

infor: 247

time: 1374995060.82

infor: 241

time: 1374995061.06

infor: 249

time: 1374995061.31

infor: 247

time: 1374995061.56

infor: 255

time: 1374995061.81

infor: 246

time: 1374995062.06

infor: 245

time: 1374995062.3

infor: 247

time: 1374995062.55

infor: 242

time: 1374995062.79

infor: 249

time: 1374995063.04

infor: 249

time: 1374995063.29

infor: 250

time: 1374995063.54

infor: 243

time: 1374995063.78

************************************

94

out: 23097

outtime: 1374995064.05

************************************

0

out: 48

outtime: 1374995064.09

************************************

0

out: 37

outtime: 1374995064.12

************************************

0

out: 32

outtime: 1374995064.16

************************************

0

out: 36

outtime: 1374995064.19

************************************

0

out: 32

outtime: 1374995064.22

************************************

0

out: 32

outtime: 1374995064.26

************************************

0

out: 34

outtime: 1374995064.29

************************************

0

out: 32

outtime: 1374995064.32

************************************

0

out: 32

outtime: 1374995064.35

************************************

0

out: 34

outtime: 1374995064.39

************************************

0

out: 34

outtime: 1374995064.42

************************************

0

out: 33

outtime: 1374995064.45

************************************

0

out: 34

outtime: 1374995064.49

************************************

0

out: 33

outtime: 1374995064.52

************************************

0

out: 35

outtime: 1374995064.56

************************************

0

out: 35

outtime: 1374995064.59

************************************

0

out: 33

outtime: 1374995064.62

************************************

0

out: 34

outtime: 1374995064.66

************************************

0

out: 36

outtime: 1374995064.69

************************************

0

out: 35

outtime: 1374995064.73

************************************

0

out: 34

outtime: 1374995064.76

************************************

0

out: 35

outtime: 1374995064.8

************************************

0

out: 31

outtime: 1374995064.83

************************************

0

out: 33

outtime: 1374995064.86

************************************

0

out: 38

outtime: 1374995064.9

************************************

0

out: 42

outtime: 1374995064.94

************************************

0

out: 37

outtime: 1374995064.98

************************************

0

out: 32

outtime: 1374995065.01

************************************

0

out: 34

outtime: 1374995065.05

************************************

0

out: 36

outtime: 1374995065.08

************************************

0

out: 34

outtime: 1374995065.12

************************************

0

out: 31

outtime: 1374995065.15

************************************

0

out: 37

outtime: 1374995065.18

************************************

0

out: 32

outtime: 1374995065.21

************************************

0

out: 33

outtime: 1374995065.25

************************************

0

out: 33

outtime: 1374995065.28

************************************

0

out: 32

outtime: 1374995065.31

************************************

0

out: 34

outtime: 1374995065.35

************************************

0

out: 34

outtime: 1374995065.38

>>>

观察发现，pygame.event.get()取走外部输入信息队列的时候是有个时间间隔的，这个间隔和程序本身运行的速度有关系，这里可以通过修改pygame.time.delay()里的值发现。之所以在for in pygame.event.get()循环里加入pygame.time.delay()这一句是因为程序跑的要比你手指输入快得多，现在有了pygame.time.delay()这个神器咱终于可以比程序跑得更快了，只要你以一定的速度输入下去，外部输入信息队列会因为pygame.event.get()不能及时取走而装的很多，当pygame.event.get()终于处理完曾经取走的信息，等待它的又是外部输入信息队列里好大一坨的外部输入信息···

···

总之，大概就是这个意思