我正在pygame中制作一个pong的克隆游戏，我在移动球时遇到了麻烦。我的问题是：1）当我按下按钮时，如何使我的球不同时移动； 2）当球到达上边界时，他直线移动。我该如何更改代码，使球按对角线移动； 3）我应该如何更改我的代码，即从棍子击退的那个球？
这是我的代码
import pygame, sys
from pygame.locals import *
pygame.init()
''' game screen'''
size=(600,600)
screen=pygame.display.set_mode(size)
pygame.display.set_caption('ping_pong')
'''colors'''
navy_blue = [0, 0, 128]
white = [255, 255, 255]
orange = [255, 165, 0]
black = [0, 0, 0]
'''variables'''
y_movement1 = 267.5
y_movement2 = 267.5
x_velocity = 300
y_velocity = 300
gy = 25
sp2 = 585
sp1 = 15
'''functions'''
def borders():
pygame.draw.rect(screen, navy_blue, (0, 0, 600, gy) )
pygame.draw.rect(screen, navy_blue, (0, 600, 600, -gy))
def objects():
pygame.draw.rect(screen, orange, (sp1, y_movement1, 10, 25))
pygame.draw.rect(screen, orange, (sp2, y_movement2, -10, 25))
pygame.draw.rect(screen, white, (x_velocity, y_velocity, 7.5, 7.5))
'''MAIN LOOP'''
clock = pygame.time.Clock()
running = True
while running:
clock.tick(15)
event = pygame.event.get()
borders()
objects()
x_velocity += 5
y_velocity -= 5
if y_velocity < gy:
x_velocity += 5
y_velocity += 5
if x_velocity == 600:
x_velocity = 300
y_velocity = 300
if x_velocity == 0:
x_velocity = 300
y_velocity = 300
if x_velocity + 7.5 == sp2 and y_velocity < 300:
x_velocity -= 5
y_velocity += 5
if x_velocity + 7.5 == sp2 and y_velocity > 300:
x_velocity -= 5
y_velocity -= 5
if x_velocity == sp1 and y_velocity < 300:
x_velocity += 5
y_velocity += 5
if x_velocity == sp1 and y_velocity > 300:
x_velocity += 5
y_velocity -= 5
keys = pygame.key.get_pressed()
if keys[pygame.K_w] and y_movement1 > 25:
y_movement1 -= 6
if keys[pygame.K_s] and y_movement1 < 575 - 25 -6 :
y_movement1 += 6
if keys[pygame.K_u] and y_movement2 > 25:
y_movement2 -= 6
if keys[pygame.K_j] and y_movement2 < 550 - 25 - 6:
y_movement2 += 6
screen.fill(black)
borders()
objects()
for event in event:
if event.type == pygame.QUIT:
running = False
sys.exit()
elif event.type == KEYDOWN and event.key == K_ESCAPE:
sys.exit()
else:
pygame.display.flip( )
pygame.quit()
答案 0 :(得分：1)
这是我正确的代码版本：
import pygame
pygame.init()
''' game screen'''
size=(600,600)
screen=pygame.display.set_mode(size)
pygame.display.set_caption('ping_pong')
'''colors'''
navy_blue = [0, 0, 128]
white = [255, 255, 255]
orange = [255, 165, 0]
black = [0, 0, 0]
'''variables'''
y_movement1 = 267.5
y_movement2 = 267.5
x_velocity = 300
y_velocity = 300
gy = 25
sp2 = 585
sp1 = 15
'''functions'''
def borders():
pygame.draw.rect(screen, navy_blue, (0, 0, 600, gy) )
pygame.draw.rect(screen, navy_blue, (0, 600, 600, -gy))
def objects():
pygame.draw.rect(screen, orange, (sp1, y_movement1, 10, 25))
pygame.draw.rect(screen, orange, (sp2, y_movement2, -10, 25))
pygame.draw.rect(screen, white, (x_pos, y_pos, 7.5, 7.5))
'''MAIN LOOP'''
clock = pygame.time.Clock()
running = True
x_pos = 300
y_pos = 300
x_velocity = 5
y_velocity = 2
while running:
clock.tick(15)
screen.fill(black)
borders()
objects()
pygame.display.flip()
events = pygame.event.get()
if x_pos == sp1+10:
if y_pos > y_movement1:
if y_pos < y_movement1+25:
x_velocity *= -1
if x_pos == sp2-10:
if y_pos > y_movement2:
if y_pos < y_movement2+25:
x_velocity *= -1
if y_pos < gy or y_pos > 600-gy:
y_velocity *= -1
x_pos += x_velocity
y_pos += y_velocity
keys = pygame.key.get_pressed()
if keys[pygame.K_w] and y_movement1 > 25:
y_movement1 -= 6
if keys[pygame.K_s] and y_movement1 < 575 - 25 -6 :
y_movement1 += 6
if keys[pygame.K_u] and y_movement2 > 25:
y_movement2 -= 6
if keys[pygame.K_j] and y_movement2 < 550 - 25 - 6:
y_movement2 += 6
for event in events:
if event.type == pygame.QUIT:
running = False
elif event.type == pygame.KEYDOWN and event.key == pygame.K_ESCAPE:
running = False
pygame.quit()
编辑：
您使用x和y速度作为位置，这就是问题所在。您应该将它们用作向量的x和y值。我更正了这一点，现在机芯工作正常。但是由于这种变化，小贩们并没有阻止球。我更改了碰撞检查并完成了！
PS： 我建议使用random来生成随机的初始速度。
edit2：
这部分
if keys[pygame.K_w] and y_movement1 > 25:
y_movement1 -= 6
if keys[pygame.K_s] and y_movement1 < 575 - 25 -6 :
y_movement1 += 6
if keys[pygame.K_u] and y_movement2 > 25:
y_movement2 -= 6
if keys[pygame.K_j] and y_movement2 < 550 - 25 - 6:
y_movement2 += 6
应替换为此
if keys[pygame.K_w] and y_movement1 > gy:
y_movement1 -= 6
if keys[pygame.K_s] and y_movement1 < 600-gy-25:
y_movement1 += 6
if keys[pygame.K_u] and y_movement2 > gy:
y_movement2 -= 6
if keys[pygame.K_j] and y_movement2 < 600-gy-25:
y_movement2 += 6
答案 1 :(得分：0)
这是一个示例（py3）
import pygame
pygame.init()
screen = pygame.display.set_mode((500, 500))
# white color
color = (255, 255, 255)
# light shade of the button
color_light = (170, 170, 170)
# dark shade of the button
color_dark = (100, 100, 100)
width = screen.get_width()
height = screen.get_height()
smallfont = pygame.font.SysFont('Corbel', 35)
text = smallfont.render('quit', True, color)
while True:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
if event.type == pygame.MOUSEBUTTONDOWN:
# if the mouse is clicked on the
# button the game is terminated
if width / 2 <= mouse[0] <= width / 2 + 140 and height / 2 <= mouse[1] <= height / 2 + 40:
pygame.quit()
# fills the screen with a color
screen.fill((255, 128, 128))
# stores the (x,y) coordinates into
# the variable as a tuple
mouse = pygame.mouse.get_pos()
# if mouse is hovered on a button it
# changes to lighter shade
if width / 2 <= mouse[0] <= width / 2 + 140 and height / 2 <= mouse[1] <= height / 2 + 40:
pygame.draw.rect(screen, color_light, (int(width / 2), int(height / 2), 140, 40))
else:
pygame.draw.rect(screen, color_dark, (int(width / 2), int(height / 2), 140, 40))
screen.blit(text, (int(width / 2) + 50, int(height / 2)))
pygame.display.update()