pygame 中的平滑运动 [英] smooth movement in pygame
问题描述
我刚刚开始尝试学习 pygame,在尝试在屏幕上移动矩形时遇到了一些麻烦.我已将其设置为当我按下每个箭头键时,矩形将向上、向下、向左和向右移动.但是,当我按住按键时,它不会继续移动.我必须多次按键才能移动到任何地方.
I have just started trying to learn about pygame, and I've run into some trouble when trying to move my rectangle around the screen. I have it set so that when I press each of the arrow keys, the rectangle will move up, down, left, and right. However, when I hold down the keys, it will not keep moving. I have to press the keys multiple times for it to move anywhere.
我尝试使用 pygame.key.get_pressed() 方法,如 Python - Pygame 中的平滑键盘移动,但没有任何效果.
I have tried using the pygame.key.get_pressed() method as answered in the post Python - Smooth Keyboard Movement in Pygame but nothing is working.
我注意到,每隔一段时间,如果我按住箭头键一段时间,矩形会继续移动,但只有大约一秒钟,然后停止.
I noticed that every once in a while if I hold down the arrow keys for a while, the rectangle will keep moving but only for about a second, then it stops.
这个问题以前可能有人回答过,但我一直没能找到答案.
This question has probably been answered before, but I haven't been able to come across an answer.
代码如下:
import pygame
import os
import sys
_image_library = {}
def get_image(path):
global _image_library
image = _image_library.get(path)
if image == None:
canonicalized_path = path.replace('/', os.sep).replace('\\', os.sep)
image = pygame.image.load(canonicalized_path)
_image_library[path] = image
return image
def detect_collision(x,y):
if x > 340:
x -= 1
if y > 240:
y -= 1
if y < 0:
y += 1
if x < 0:
x += 1
return x,y
pygame.init()
screen = pygame.display.set_mode((800, 550))
done = False
clock = pygame.time.Clock()
x = 30
y = 30
pygame.mixer.music.load("song.mp3")
pygame.mixer.music.play()
while not done:
for event in pygame.event.get():
if event.type == pygame.QUIT:
done = True
pressed = pygame.key.get_pressed()
if pressed[pygame.K_UP]:
y -= 1
x,y = detect_collision(x, y)
if pressed[pygame.K_DOWN]:
y += 1
x,y = detect_collision(x, y)
if pressed[pygame.K_LEFT]:
x -= 1
x,y = detect_collision(x, y)
if pressed[pygame.K_RIGHT]:
x += 1
x,y = detect_collision(x, y)
screen.fill((255, 255, 255))
pygame.draw.rect(screen, (0, 128, 0), pygame.Rect(x, y, 60, 60))
pygame.display.flip()
clock.tick(60)
推荐答案
我遇到了类似的问题,所以我没有使用 get_pressed(),而是使用 dict 并在按下某个键时更新它:
I had a similar problem, so instead of using get_pressed(), I use a dict and update it whenever a key is pressed:
pressed = {}
while True:
for event in pygame.event.get():
if event.type == KEYUP:
pressed[event.key] = False
elif event.type == KEYDOWN:
pressed[event.key] = True
然后测试是否按下了一个键(例如向上箭头),只需使用
Then to test if a key (e.g. the up arrow) was pressed just use
if pressed.get(K_UP):
# Do something
在主事件循环内(即 while True).
inside the main event loop (i.e. the while True).
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