如何解决矩形故障,其余部分不移动
import pygame
import sys
from pygame.sprite import Sprite
class Settings:
def __init__(self):
self.raindrop_speed = 3
self.raindrop_direction = -1
self.raindrop_dropseed = 3
self.backgroundcolor = (30,30,30)
class Drop(Sprite):
def __init__(self):
super().__init__()
self.image = pygame.image.load("raindrop.png")
self.rect = self.image.get_rect()
self.rect.y = self.rect.height
self.rect.x = self.rect.width
self.x_cord = self.rect.x
self.y_cord = self.rect.y
class RainDrop:
def __init__(self):
pygame.init()
self.screen = pygame.display.set_mode((1200,800))
self.settings = Settings()
self.backgroundcolor = self.settings.backgroundcolor
self.raindrops = pygame.sprite.Group()
self.screen_rect = self.screen.get_rect()
self._add_raindrops()
def _add_raindrops(self):
new_raindrop = Drop()
drop_height = new_raindrop.rect.height
drop_width = new_raindrop.rect.width
print(drop_width)
screen_space = self.screen_rect.width
screen_height_space = self.screen_rect.height
aviable_row_space = screen_height_space//(drop_height*2)
avivable_screen_space = screen_space - (drop_width*2)
amount_of_columns = avivable_screen_space//(drop_width*2)
self._add_columns(amount_of_columns,aviable_row_space)
def _add_columns(self,amount_of_columns,aviable_row_space):
for height_of_drops in range(aviable_row_space):
for number_of_drops in range(amount_of_columns):
drop = Drop()
drop.x_cord = (drop.rect.width *2)* number_of_drops
drop.y_cord =(drop.rect.height *2)* height_of_drops
drop.rect.x = drop.x_cord
drop.rect.y = drop.y_cord
self.raindrops.add(drop)
def _bring_down_raindrops(self):
for drop in self.raindrops:
drop.y_cord += self.settings.raindrop_dropseed
drop.rect.y = drop.y_cord
def _update_drops(self):
height_counter = 1
self.raindrops.update()
for drop in self.raindrops.copy():
drop.x_cord += self.settings.raindrop_direction * self.settings.raindrop_speed
drop.rect.x = drop.x_cord
if drop.rect.right >= self.screen_rect.right:
self.settings.raindrop_direction = -1
self._bring_down_raindrops()
elif drop.rect.left <= 0:
self.settings.raindrop_direction = 1
self._bring_down_raindrops()
#if drop.rect.y >= self.screen_rect.height or drop.rect.y <= 0:
# drop.rect.x = drop.rect.width
# drop.y_cord = drop.rect.height
# drop.rect.y = drop.y_cord
print(height_counter)
print(self.raindrops)
def _update_game(self):
self.screen.fill(self.backgroundcolor)
self.raindrops.draw(self.screen)
pygame.display.flip()
def _check_events(self):
for event in pygame.event.get():
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_q:
sys.exit()
def run_game(self):
while True:
self._check_events()
self._update_drops()
self._update_game()
if __name__ == "__main__":
rd = RainDrop()
rd.run_game()
每次我运行这个程序时,矩形(水滴)到达屏幕末端时会出现一个更大的间隙条件在底部,但我不确定我是否弄乱了它并更改了一些值,但它仍然做同样的事情。
解决方法
你的问题在于当你意识到你已经撞到屏幕边缘时你做了什么。当您发现屏幕上有任何掉落时,您会执行此操作,然后您反转方向。问题是,您已经将顶行上的一些水滴向一个方向移动,但是在您识别出屏幕边缘后,您继续在同一次传递中向相反方向移动其余水滴.事情就是这样结束的。
您想要做的是注意您已经击中了屏幕的边缘,但不会立即做任何不同的事情,以便您仍然以相同的方式处理屏幕上的所有掉落。画完所有的水滴后,您就可以改变方向了。
这是一个 _update_drops
版本,可以执行此操作:
def _update_drops(self):
height_counter = 1
self.raindrops.update()
# assume we haven't hit either edge of the screen
reverse = 0
for drop in self.raindrops.copy():
drop.x_cord += self.settings.raindrop_direction * self.settings.raindrop_speed
drop.rect.x = drop.x_cord
if drop.rect.right >= self.screen_rect.right:
# remember that we hit the right edge of the screen
reverse = -1
elif drop.rect.left <= 0:
# remember that we hit the left edge of the screen
reverse = 1
# if we hit one of the edges,change directions and drop down
if reverse != 0:
self.settings.raindrop_direction = reverse
self._bring_down_raindrops()
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