飞机大战问题之"飞机雨",Python交流,技术交流,鱼C论坛

flyps 发表于 2023-10-5 17:38:17

飞机大战问题之"飞机雨"

file:///E:/DXYF2415/Desktop/bug1.mp4
麻烦帮忙各位看一下这个bug是怎么回事，谢谢
enemy代码如下:
import pygame
from random import *

class SmallEnemy(pygame.sprite.Sprite):
def __init__(self,bg_size):
   pygame.sprite.Sprite.__init__(self)

   self.image =pygame.image.load('images/enemy1.png').convert_alpha()
   self.rect = self.image.get_rect()
   self.width, self.height = bg_size, bg_size
   self.speed = 2
   self.rect.left, self.rect.top = randint(0,self.width - self.rect.width), randint(-5 * self.height, 0)

def reset(self):
   self.rect.left, self.rect.top = randint(0,self.width - self.rect.width), randint(-5 * self.height, 0)

def move(self):
   if self.rect.top < self.height:
         self.rect.top += self.speed
   else:
         self.reset()

class MidEnemy(pygame.sprite.Sprite):
def __init__(self,bg_size):
   pygame.sprite.Sprite.__init__(self)

   self.image =pygame.image.load('images/enemy2.png').convert_alpha()
   self.rect = self.image.get_rect()
   self.width, self.height = bg_size, bg_size
   self.speed = 1
   self.rect.left, self.rect.top = randint(0,self.width - self.rect.width), randint(-10 * self.height, -self.height)

def reset(self):
   self.rect.left, self.rect.top = randint(0,self.width - self.rect.width), randint(-10 * self.height, -self.height)

def move(self):
   if self.rect.top < self.height:
         self.rect.top += self.speed
   else:
         self.reset()

class BigEnemy(pygame.sprite.Sprite):
def __init__(self,bg_size):
   pygame.sprite.Sprite.__init__(self)

   self.image1 =pygame.image.load('images/enemy3_n1.png').convert_alpha()
   self.image2 =pygame.image.load('images/enemy3_n2.png').convert_alpha()
   self.rect = self.image1.get_rect()
   self.width, self.height = bg_size, bg_size
   self.speed = 1
   self.rect.left, self.rect.top = randint(0,self.width - self.rect.width), randint(-15 * self.height, -5 * self.height)

def reset(self):
      self.rect.left, self.rect.top = randint(0,self.width - self.rect.width), randint(-15 * self.height,-5 * self.height)

def move(self):
   if self.rect.top < self.height:
         self.rect.top += self.speed
   else:
         self.reset()
主体代码如下:
import pygame
import sys
import traceback
import myplane
from pygame.locals import *
from random import *
import enemy

pygame.init()
pygame.mixer.init()

bg_size = width, height = 480, 700
screen = pygame.display.set_mode(bg_size)
pygame.display.set_caption('飞机大战-- FishC Demo')

background = pygame.image.load('images/background.png').convert()

#载入游戏音乐
pygame.mixer.music.load("sound/game_music.ogg")
pygame.mixer.music.set_volume(0.2)
bullet_sound = pygame.mixer.Sound("sound/bullet.wav")
bullet_sound.set_volume(0.2)
bomb_sound = pygame.mixer.Sound("sound/use_bomb.wav")
bomb_sound.set_volume(0.2)
supply_sound = pygame.mixer.Sound("sound/supply.wav")
supply_sound.set_volume(0.2)
get_bomb_sound = pygame.mixer.Sound("sound/get_bomb.wav")
get_bomb_sound.set_volume(0.2)
get_bullet_sound = pygame.mixer.Sound("sound/get_bullet.wav")
get_bullet_sound.set_volume(0.2)
upgrade_sound = pygame.mixer.Sound("sound/upgrade.wav")
upgrade_sound.set_volume(0.2)
enemy3_fly_sound = pygame.mixer.Sound("sound/enemy3_flying.wav")
enemy3_fly_sound.set_volume(0.2)
enemy1_down_sound = pygame.mixer.Sound("sound/enemy1_down.wav")
enemy1_down_sound.set_volume(0.2)
enemy2_down_sound = pygame.mixer.Sound("sound/enemy2_down.wav")
enemy2_down_sound.set_volume(0.2)
enemy3_down_sound = pygame.mixer.Sound("sound/enemy3_down.wav")
enemy3_down_sound.set_volume(0.5)
me_down_sound = pygame.mixer.Sound("sound/me_down.wav")
me_down_sound.set_volume(0.2)

def add_small_enemies(group1,group2,num):
for i in range(num):
   e1 = enemy.SmallEnemy(bg_size)
   group1.add(e1)
   group2.add(e1)

def add_mid_enemies(group1,group2,num):
for i in range(num):
   e2 = enemy.MidEnemy(bg_size)
   group1.add(e2)
   group2.add(e2)

def add_big_enemies(group1,group2,num):
for i in range(num):
   e3 = enemy.BigEnemy(bg_size)
   group1.add(e3)
   group2.add(e3)

def main():
pygame.mixer.music.play(-1)

#生成我方飞机
me = myplane.MyPlane(bg_size)

#生成敌方飞机
enemies = pygame.sprite.Group()

small_enemies = pygame.sprite.Group()
add_small_enemies(small_enemies,enemies,15)

mid_enemies = pygame.sprite.Group()
add_mid_enemies(mid_enemies,enemies,15)

big_enemies = pygame.sprite.Group()
add_big_enemies(big_enemies,enemies,15)

clock = pygame.time.Clock()

switch_image = True

delay = 100

running = True

while running:
   for event in pygame.event.get():
         if event.type == QUIT:
            pygame.quit()
            sys.exit()

   key_pressed = pygame.key.get_pressed()

   if key_pressed or key_pressed:
         me.moveUp()
   if key_pressed or key_pressed:
         me.moveDown()
   if key_pressed or key_pressed:
         me.moveLeft()
   if key_pressed or key_pressed:
         me.moveRight()


   screen.blit(background, (0, 0))

   for each in big_enemies:
         each.move()
         if switch_image:
            screen.blit(each.image1,each.rect)
         else:
            screen.blit(each.image2,each.rect)
         if each.rect.bottom > -50:
            enemy.fly_sound.play()

         for each in mid_enemies:
            each.move()
            screen.blit(each.image,each.rect)

         for each in small_enemies:
            each.move()
            screen.blit(each.image,each.rect)

   if switch_image:
         screen.blit(me.image1,me.rect)
   else:
         screen.blit(me.image2,me.rect)

   if not(delay % 5):
         switch_image = not switch_image

   delay -= 1
   if not delay:
         delay = 100

   pygame.display.flip()

   clock.tick(60)

if __name__ == '__main__':
try:
   main()
except SystemExit:
   pass
except:
   traceback.print_exc()
   pygame.quit()
   input()

isdkz 发表于 2023-10-5 17:38:39

这个问题是因为在主体代码中的循环中，对于每个大型敌机，都会再次遍历中型敌机和小型敌机，而且这个遍历没有缩进到大型敌机的循环中。因此，每个大型敌机都会再次遍历中型敌机和小型敌机，并且每个小型敌机和中型敌机都会移动和绘制两次，导致出现“飞机雨”的问题。要解决这个问题，只需要将中型和小型敌机的遍历缩进到大型敌机的循环中即可。修改后的代码如下：

while running:
for event in pygame.event.get():
   if event.type == QUIT:
         pygame.quit()
         sys.exit()

key_pressed = pygame.key.get_pressed()

if key_pressed or key_pressed:
   me.moveUp()
if key_pressed or key_pressed:
   me.moveDown()
if key_pressed or key_pressed:
   me.moveLeft()
if key_pressed or key_pressed:
   me.moveRight()

screen.blit(background, (0, 0))

for each in big_enemies:
   each.move()
   if switch_image:
         screen.blit(each.image1,each.rect)
   else:
         screen.blit(each.image2,each.rect)
   if each.rect.bottom > -50:
         enemy.fly_sound.play()

   for each in mid_enemies:
         each.move()
         screen.blit(each.image,each.rect)

   for each in small_enemies:
         each.move()
         screen.blit(each.image,each.rect)

if switch_image:
   screen.blit(me.image1,me.rect)
else:
   screen.blit(me.image2,me.rect)

if not(delay % 5):
   switch_image = not switch_image

delay -= 1
if not delay:
   delay = 100

pygame.display.flip()

clock.tick(60)

陶远航 发表于 2023-10-5 17:39:05

从您提供的代码和视频来看，这个问题可能是由于敌机生成速度过快导致的。在游戏中，敌机会不断地出现在屏幕上，但是如果生成速度过快，就会导致敌机堆积在一起，形成所谓的“飞机雨”。

要解决这个问题，您可以尝试调整敌机生成的速度。具体来说，您可以在 SmallEnemy、MidEnemy 和 BigEnemy 类的 reset 方法中，增加一个随机延迟时间，让敌机在一段时间后再重新出现。这样可以避免敌机过快地堆积在一起。

以下是修改后的 SmallEnemy、MidEnemy 和 BigEnemy 类的 reset 方法：

class SmallEnemy(pygame.sprite.Sprite):
# ...
def reset(self):
   self.rect.left, self.rect.top = randint(0, self.width - self.rect.width), randint(-5 * self.height, 0) - randint(0, 100)

class MidEnemy(pygame.sprite.Sprite):
# ...
def reset(self):
   self.rect.left, self.rect.top = randint(0, self.width - self.rect.width), randint(-10 * self.height, -self.height) - randint(0, 100)

class BigEnemy(pygame.sprite.Sprite):
# ...
def reset(self):
   self.rect.left, self.rect.top = randint(0, self.width - self.rect.width), randint(-15 * self.height, -5 * self.height) - randint(0, 100)

在这里，我们为每个敌机的 reset 方法添加了一个随机延迟时间（randint(0, 100)）。这将使得敌机在一段时间后再重新出现，从而避免了“飞机雨”的问题。

尝试应用这些更改后，您应该会看到游戏中敌机生成的速度变慢，不再出现“飞机雨”的现象。
请注意，本回答来自GPT-4
如果问题已经解决，请设置最佳答案

Mike_python小 发表于 2023-10-5 17:41:07

从您提供的代码来看，我发现了一个可能导致"飞机雨"现象的问题。在`SmallEnemy`、`MidEnemy`和`BigEnemy`类的`reset`方法中，您将敌机的初始位置设置为了屏幕之外。然而，您使用了一个随机范围，可能导致敌机在游戏开始时就出现在屏幕上，从而产生"飞机雨"现象。

为了解决这个问题，您可以将敌机的初始位置设置为屏幕上方更远的地方。这是修改后的`reset`方法：

class SmallEnemy(pygame.sprite.Sprite):
# ...
def reset(self):
   self.rect.left, self.rect.top = randint(0, self.width - self.rect.width), randint(-15 * self.height, -self.height)

class MidEnemy(pygame.sprite.Sprite):
# ...
def reset(self):
   self.rect.left, self.rect.top = randint(0, self.width - self.rect.width), randint(-20 * self.height, -2 * self.height)

class BigEnemy(pygame.sprite.Sprite):
# ...
def reset(self):
   self.rect.left, self.rect.top = randint(0, self.width - self.rect.width), randint(-30 * self.height, -10 * self.height)

这样，敌机将从屏幕上方更远的地方开始出现，避免了游戏开始时就出现在屏幕上的情况。您可以根据需要调整这些数值，以获得更好的游戏体验。

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飞机大战问题之"飞机雨"