添加第二个精灵不适用于 pygame 教程
Adding second sprite doesn't work with pygame tutorial
我一直在使用本教程中的这段代码 https://opensource.com/article/18/5/pygame-enemy，但我无法简单地通过使用
添加更多敌人
enemy = Enemy(40,100,'spr.png')# spawn enemy
enemy_list = pygame.sprite.Group() # create enemy group
enemy_list.add(enemy) # add enemy to group
原图来自这里https://opengameart.org/sites/default/files/opp2_sprites.zip
但为了便于解释，我在 imgur 中分开了：
内容文件夹图片:
yeti.png: https://imgur.com/GNNcU6z
stage.png: https://imgur.com/YyiEJ0q
和我想放的第二个敌人（精灵）的形象
spr.png: https://imgur.com/1fYXa7Y
我尝试使用这个类似问题的解决方案 ，但只是出现错误或没有结果。
我的代码：
import pygame
import sys
import os
'''
Objects
'''
class Enemy(pygame.sprite.Sprite):
'''
Spawn an enemy
'''
def __init__(self, x, y, img):
pygame.sprite.Sprite.__init__(self)
self.image = pygame.image.load(os.path.join('images', img))
#self.image.convert_alpha()
#self.image.set_colorkey(ALPHA)
self.rect = self.image.get_rect()
self.rect.x = x
self.rect.y = y
self.counter = 0
def move(self):
'''
enemy movement
'''
distance = 20
speed = 8
if self.counter >= 0 and self.counter <= distance:
self.rect.x += speed
elif self.counter >= distance and self.counter <= distance * 2:
self.rect.x -= speed
else:
self.counter = 0
self.counter += 1
class Level():
def bad(lvl,eloc):
if lvl == 1:
enemy = Enemy(eloc[0],eloc[1],'yeti.png') # spawn enemy
enemy_list = pygame.sprite.Group() # create enemy group
enemy_list.add(enemy) # add enemy to group
if lvl == 2:
print("Level " + str(lvl) )
return enemy_list
class Player(pygame.sprite.Sprite):
'''
Spawn a player
'''
def __init__(self):
pygame.sprite.Sprite.__init__(self)
self.movex = 0
self.movey = 0
self.frame = 0
self.health = 10
self.frame = 0
self.images = []
for i in range(1, 5):
img = pygame.image.load(
os.path.join('images', 'hero' + str(i) + '.png')).convert()
img.convert_alpha()
img.set_colorkey(ALPHA)
self.images.append(img)
self.image = self.images[0]
self.rect = self.image.get_rect()
def control(self, x, y):
'''
control player movement
'''
self.movex += x
self.movey += y
def update(self):
'''
Update sprite position
'''
self.rect.x = self.rect.x + self.movex
self.rect.y = self.rect.y + self.movey
# moving left
if self.movex < 0:
self.frame += 1
if self.frame > 3 * ani:
self.frame = 0
self.image = self.images[self.frame // ani]
# collisions
enemy_hit_list = pygame.sprite.spritecollide(self, enemy_list, False)
for enemy in enemy_hit_list:
self.health -= 1
print(self.health)
# moving right
if self.movex > 0:
self.frame += 1
if self.frame > 3 * ani:
self.frame = 0
self.image = self.images[(self.frame // ani)]
'''
Setup
'''
worldx = 560
worldy = 520
fps = 40 # frame rate
ani = 4 # animation cycles
clock = pygame.time.Clock()
pygame.init()
main = True
BLUE = (25, 25, 200)
BLACK = (23, 23, 23)
WHITE = (254, 254, 254)
ALPHA = (0, 255, 0)
world = pygame.display.set_mode([worldx, worldy])
backdrop = pygame.image.load(os.path.join('images', 'stage.png')).convert()
backdropbox = world.get_rect()
player = Player() # spawn player
player.rect.x = 0
player.rect.y = 0
player_list = pygame.sprite.Group()
player_list.add(player)
steps = 10 # how fast to move
eloc = []
eloc = [200,20]
enemy_list = Level.bad( 1, eloc )
'''
Main loop
'''
while main == True:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
sys.exit()
main = False
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_LEFT or event.key == ord('a'):
player.control(-steps, 0)
if event.key == pygame.K_RIGHT or event.key == ord('d'):
player.control(steps, 0)
if event.key == pygame.K_UP or event.key == ord('w'):
print('jump')
if event.type == pygame.KEYUP:
if event.key == pygame.K_LEFT or event.key == ord('a'):
player.control(steps, 0)
if event.key == pygame.K_RIGHT or event.key == ord('d'):
player.control(-steps, 0)
if event.key == ord('q'):
pygame.quit()
sys.exit()
main = False
# world.fill(BLACK)
world.blit(backdrop, backdropbox)
player.update()
player_list.draw(world) #refresh player position
enemy_list.draw(world)
for e in enemy_list:
e.move()
pygame.display.flip()
clock.tick(fps)
您的代码有很多问题需要注意。
去关卡class看看。您需要在 class 中使用 self 来引用 class 函数和变量。我添加了第二个函数来添加第二个敌人（spr.png），因此我将 enemy_list 放在函数之外，在 class 级别，因此两个函数都可以访问它。
class Level:
def __init__(self):
self.enemy_list = pygame.sprite.Group() # create enemy group
def bad_1(self, lvl, eloc):
if lvl == 1:
enemy = Enemy(eloc[0],eloc[1],'yeti.png') # spawn enemy
self.enemy_list.add(enemy) # add enemy to group
if lvl == 2:
print("Level " + str(lvl) )
return self.enemy_list
def bad_2(self, lvl, eloc):
if lvl == 1:
enemy = Enemy(eloc[0],eloc[1],'spr.png') # spawn enemy
self.enemy_list.add(enemy) # add enemy to group
if lvl == 2:
print("Level " + str(lvl) )
return self.enemy_list
这部分我也改了。首先，你需要实例化class（见l = Level()），然后你就可以使用它的函数和变量了。请注意，您只调用了一次 Level.bad()，所以只有一个敌人！
steps = 10 # how fast to move
l = Level()
eloc = [200,20]
enemy_list = l.bad_1(1, eloc)
eloc = [100,10]
enemy_list = l.bad_2(1, eloc)
我的代码相当 "hack"，一些快速且易于查看的代码，但现在可以使用了...
我一直在使用本教程中的这段代码 https://opensource.com/article/18/5/pygame-enemy，但我无法简单地通过使用
添加更多敌人enemy = Enemy(40,100,'spr.png')# spawn enemy
enemy_list = pygame.sprite.Group() # create enemy group
enemy_list.add(enemy) # add enemy to group
原图来自这里https://opengameart.org/sites/default/files/opp2_sprites.zip 但为了便于解释，我在 imgur 中分开了：
内容文件夹图片:
yeti.png: https://imgur.com/GNNcU6z
stage.png: https://imgur.com/YyiEJ0q
和我想放的第二个敌人（精灵）的形象
spr.png: https://imgur.com/1fYXa7Y
我尝试使用这个类似问题的解决方案
我的代码：
import pygame
import sys
import os
'''
Objects
'''
class Enemy(pygame.sprite.Sprite):
'''
Spawn an enemy
'''
def __init__(self, x, y, img):
pygame.sprite.Sprite.__init__(self)
self.image = pygame.image.load(os.path.join('images', img))
#self.image.convert_alpha()
#self.image.set_colorkey(ALPHA)
self.rect = self.image.get_rect()
self.rect.x = x
self.rect.y = y
self.counter = 0
def move(self):
'''
enemy movement
'''
distance = 20
speed = 8
if self.counter >= 0 and self.counter <= distance:
self.rect.x += speed
elif self.counter >= distance and self.counter <= distance * 2:
self.rect.x -= speed
else:
self.counter = 0
self.counter += 1
class Level():
def bad(lvl,eloc):
if lvl == 1:
enemy = Enemy(eloc[0],eloc[1],'yeti.png') # spawn enemy
enemy_list = pygame.sprite.Group() # create enemy group
enemy_list.add(enemy) # add enemy to group
if lvl == 2:
print("Level " + str(lvl) )
return enemy_list
class Player(pygame.sprite.Sprite):
'''
Spawn a player
'''
def __init__(self):
pygame.sprite.Sprite.__init__(self)
self.movex = 0
self.movey = 0
self.frame = 0
self.health = 10
self.frame = 0
self.images = []
for i in range(1, 5):
img = pygame.image.load(
os.path.join('images', 'hero' + str(i) + '.png')).convert()
img.convert_alpha()
img.set_colorkey(ALPHA)
self.images.append(img)
self.image = self.images[0]
self.rect = self.image.get_rect()
def control(self, x, y):
'''
control player movement
'''
self.movex += x
self.movey += y
def update(self):
'''
Update sprite position
'''
self.rect.x = self.rect.x + self.movex
self.rect.y = self.rect.y + self.movey
# moving left
if self.movex < 0:
self.frame += 1
if self.frame > 3 * ani:
self.frame = 0
self.image = self.images[self.frame // ani]
# collisions
enemy_hit_list = pygame.sprite.spritecollide(self, enemy_list, False)
for enemy in enemy_hit_list:
self.health -= 1
print(self.health)
# moving right
if self.movex > 0:
self.frame += 1
if self.frame > 3 * ani:
self.frame = 0
self.image = self.images[(self.frame // ani)]
'''
Setup
'''
worldx = 560
worldy = 520
fps = 40 # frame rate
ani = 4 # animation cycles
clock = pygame.time.Clock()
pygame.init()
main = True
BLUE = (25, 25, 200)
BLACK = (23, 23, 23)
WHITE = (254, 254, 254)
ALPHA = (0, 255, 0)
world = pygame.display.set_mode([worldx, worldy])
backdrop = pygame.image.load(os.path.join('images', 'stage.png')).convert()
backdropbox = world.get_rect()
player = Player() # spawn player
player.rect.x = 0
player.rect.y = 0
player_list = pygame.sprite.Group()
player_list.add(player)
steps = 10 # how fast to move
eloc = []
eloc = [200,20]
enemy_list = Level.bad( 1, eloc )
'''
Main loop
'''
while main == True:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
sys.exit()
main = False
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_LEFT or event.key == ord('a'):
player.control(-steps, 0)
if event.key == pygame.K_RIGHT or event.key == ord('d'):
player.control(steps, 0)
if event.key == pygame.K_UP or event.key == ord('w'):
print('jump')
if event.type == pygame.KEYUP:
if event.key == pygame.K_LEFT or event.key == ord('a'):
player.control(steps, 0)
if event.key == pygame.K_RIGHT or event.key == ord('d'):
player.control(-steps, 0)
if event.key == ord('q'):
pygame.quit()
sys.exit()
main = False
# world.fill(BLACK)
world.blit(backdrop, backdropbox)
player.update()
player_list.draw(world) #refresh player position
enemy_list.draw(world)
for e in enemy_list:
e.move()
pygame.display.flip()
clock.tick(fps)
您的代码有很多问题需要注意。
去关卡class看看。您需要在 class 中使用 self 来引用 class 函数和变量。我添加了第二个函数来添加第二个敌人（spr.png），因此我将 enemy_list 放在函数之外，在 class 级别，因此两个函数都可以访问它。
class Level:
def __init__(self):
self.enemy_list = pygame.sprite.Group() # create enemy group
def bad_1(self, lvl, eloc):
if lvl == 1:
enemy = Enemy(eloc[0],eloc[1],'yeti.png') # spawn enemy
self.enemy_list.add(enemy) # add enemy to group
if lvl == 2:
print("Level " + str(lvl) )
return self.enemy_list
def bad_2(self, lvl, eloc):
if lvl == 1:
enemy = Enemy(eloc[0],eloc[1],'spr.png') # spawn enemy
self.enemy_list.add(enemy) # add enemy to group
if lvl == 2:
print("Level " + str(lvl) )
return self.enemy_list
这部分我也改了。首先，你需要实例化class（见l = Level()），然后你就可以使用它的函数和变量了。请注意，您只调用了一次 Level.bad()，所以只有一个敌人！
steps = 10 # how fast to move
l = Level()
eloc = [200,20]
enemy_list = l.bad_1(1, eloc)
eloc = [100,10]
enemy_list = l.bad_2(1, eloc)
我的代码相当 "hack"，一些快速且易于查看的代码，但现在可以使用了...