我有两个移动的精灵,一个叫做墙,它只是上下移动;另一种被称为播放器,它在屏幕上弹跳,并在遇到障碍物时改变方向
我在一定程度上做到了这一点:球员的球确实会反弹,但有时会出现一个错误,球似乎对运动感到困惑,只是在与墙壁碰撞时来回摆动。我设置球员球的速度或墙的移动速度越快,错误就越频繁
以下是该项目的代码:
import pygame, sys
# The class that creates the player ball; it does not take user input but just bounces around
class Player(pygame.sprite.Sprite):
def __init__(self, color, width, height,speed_x,speed_y):
super().__init__()
self.image = pygame.Surface([width, height])
self.image.fill(color)
self.rect = self.image.get_rect()
self.speed_x = speed_x
self.speed_y = speed_y
def update(self,collision_group):
self.rect.x += self.speed_x
self.rect.y += self.speed_y
# code to get a bounce when the ball hits the edge of the screen
if self.rect.right >= screen_width or self.rect.left <= 0:
self.speed_x *= -1
if self.rect.bottom >= screen_height or self.rect.top <= 0:
self.speed_y *= -1
# Code to get a bounce when the player collides with the wall
collide_object = pygame.sprite.spritecollide(self,collision_group,False)
if collide_object:
if collide_object[0].rect.collidepoint(self.rect.midbottom) or collide_object[0].rect.collidepoint(self.rect.midtop):
self.speed_y *= -1
if collide_object[0].rect.collidepoint(self.rect.midright) or collide_object[0].rect.collidepoint(self.rect.midleft):
self.speed_x *= -1
# Code for the wall, it just moves up and down
class Wall(pygame.sprite.Sprite):
def __init__(self,width,height,pos_x,pos_y,color):
super().__init__()
self.image = pygame.Surface([width,height])
self.image.fill(color)
self.rect = self.image.get_rect()
self.rect.x = pos_x
self.rect.y = pos_y
self.speed = 5
def update(self):
self.rect.y += self.speed
if self.rect.bottom >= screen_height:
self.speed *= -1
if self.rect.top <= 0:
self.speed *= -1
# General setup
pygame.init()
clock = pygame.time.Clock()
# Game Screen
screen_width = 800
screen_height = 800
screen = pygame.display.set_mode((screen_width,screen_height))
pygame.display.set_caption("Side by side collision")
# Creating the sprites and groups
moving_sprites = pygame.sprite.Group()
player = Player((255,0,0),20,20,8,8)
moving_sprites.add(player)
wall_sprites = pygame.sprite.Group()
center_wall = Wall(500,200,300,300,(255,255,0))
wall_sprites.add(center_wall)
while True:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
sys.exit()
# Drawing
screen.fill((0,0,0))
wall_sprites.draw(screen)
wall_sprites.update()
moving_sprites.draw(screen)
moving_sprites.update(wall_sprites)
pygame.display.flip()
clock.tick(60)
非常感谢:)
您可以意识到,如果墙与播放器发生碰撞时,墙正在远离播放器,那么您的代码就可以完美地工作。问题发生在它们相互靠近时。这是因为你的玩家实际上进入了墙内,你检测到一次碰撞,反转玩家的速度,在下一次迭代中,你的玩家仍然在墙内(因为墙向你的玩家移动,玩家找不到足够的时间逃离),你再次检测到碰撞,反转玩家的速度
您可以这样修改代码以解决此问题:
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