Python 如何检测pygame中的碰撞？
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How do I detect collision in pygame?
提问by Mike Schmidt
I have made a list of bullets and a list of sprites using the classes below. How do I detect if a bullet collides with a sprite and then delete that sprite and the bullet?
我使用下面的类制作了一个项目符号列表和一个精灵列表。如何检测子弹是否与精灵碰撞，然后删除该精灵和子弹？
#Define the sprite class
class Sprite:
def __init__(self,x,y, name):
self.x=x
self.y=y
self.image = pygame.image.load(name)
self.rect = self.image.get_rect()
def render(self):
window.blit(self.image, (self.x,self.y))
# Define the bullet class to create bullets
class Bullet:
def __init__(self,x,y):
self.x = x + 23
self.y = y
self.bullet = pygame.image.load("user_bullet.BMP")
self.rect = self.bullet.get_rect()
def render(self):
window.blit(self.bullet, (self.x, self.y))
回答by 101
From what I understand of pygame you just need to check if the two rectangles overlap using the colliderectmethod. One way to do it is to have a method in your Bulletclass that checks for collisions:
根据我对 pygame 的理解，您只需要使用该colliderect方法检查两个矩形是否重叠。一种方法是在您的Bullet类中有一个检查冲突的方法：
def is_collided_with(self, sprite):
return self.rect.colliderect(sprite.rect)
Then you can call it like:
然后你可以这样称呼它：
sprite = Sprite(10, 10, 'my_sprite')
bullet = Bullet(20, 10)
if bullet.is_collided_with(sprite):
print('collision!')
bullet.kill()
sprite.kill()
回答by Nex_Lite
There is a very simple method for what you are trying to do using built in methods.
对于您尝试使用内置方法执行的操作，有一种非常简单的方法。
here is an example.
这是一个例子。
import pygame
import sys
class Sprite(pygame.sprite.Sprite):
def __init__(self, pos):
pygame.sprite.Sprite.__init__(self)
self.image = pygame.Surface([20, 20])
self.image.fill((255, 0, 0))
self.rect = self.image.get_rect()
self.rect.center = pos
def main():
pygame.init()
clock = pygame.time.Clock()
fps = 50
bg = [255, 255, 255]
size =[200, 200]
screen = pygame.display.set_mode(size)
player = Sprite([40, 50])
player.move = [pygame.K_LEFT, pygame.K_RIGHT, pygame.K_UP, pygame.K_DOWN]
player.vx = 5
player.vy = 5
wall = Sprite([100, 60])
wall_group = pygame.sprite.Group()
wall_group.add(wall)
player_group = pygame.sprite.Group()
player_group.add(player)
# I added loop for a better exit from the game
loop = 1
while loop:
for event in pygame.event.get():
if event.type == pygame.QUIT:
loop = 0
key = pygame.key.get_pressed()
for i in range(2):
if key[player.move[i]]:
player.rect.x += player.vx * [-1, 1][i]
for i in range(2):
if key[player.move[2:4][i]]:
player.rect.y += player.vy * [-1, 1][i]
screen.fill(bg)
# first parameter takes a single sprite
# second parameter takes sprite groups
# third parameter is a do kill command if true
# all group objects colliding with the first parameter object will be
# destroyed. The first parameter could be bullets and the second one
# targets although the bullet is not destroyed but can be done with
# simple trick bellow
hit = pygame.sprite.spritecollide(player, wall_group, True)
if hit:
# if collision is detected call a function in your case destroy
# bullet
player.image.fill((255, 255, 255))
player_group.draw(screen)
wall_group.draw(screen)
pygame.display.update()
clock.tick(fps)
pygame.quit()
# sys.exit
if __name__ == '__main__':
main()
回答by jaden.joeyak
Make a group for the bullets, and then add the bullets to the group.
为项目符号创建一个组，然后将项目符号添加到组中。
What I would do is this: In the class for the player:
我会做的是：在播放器的课程中：
def collideWithBullet(self):
if pygame.sprite.spritecollideany(self, 'groupName'):
print("CollideWithBullet!!")
return True
And in the main loop somewhere:
在主循环中的某个地方：
def run(self):
if self.player.collideWithBullet():
print("Game Over")
Hopefully that works for you!!!
希望对你有用！！！
