我制作了一个类函数，允许动物在吃够一组食物后繁殖，然后在该位置创建一个新的精灵，然后降低该精灵的能量Val，但它没有这样做，而是导致创建无限数量的精灵，导致程序减慢并崩溃。
这是我为它工作所做的功能
def checkEnergy(self):
EnergyVal=self.energy
return EnergyVal
def reproduce(self,energy,Xpos,Ypos):
if energy==10:
prey = Prey(prey_image,Xpos,Ypos )
all_sprites.add(prey)
Rabbit_group.add(prey)
self.energy-=4
这是我实现它的地方：
if len(carrots) > 0:
for rabbit in Rabbit_group:
movementx, movementy = Track(rabbit.x, carrots[0].x, rabbit.y, carrots[0].y)#how the prey move
rabbit.move(movementx, movementy)
energyval=prey.checkEnergy()
rabbit.reproduce(energyval,600,700)
完整代码：
#simulates interactions of wild life
import math
import random
import pygame,sys
import random
import pdb
from pygame.locals import *
#classes--------------
class Animal(pygame.sprite.Sprite):#main class
def __init__(self, image, x, y):
super().__init__()
self.x = x
self.y = y
self.image = image
self.rect = self.image.get_rect(center = (x, y))
self.Energy=10
def move(self, mx, my):#moves the sprite
self.x += mx
self.y += my
self.rect = self.image.get_rect(center = (self.x, self.y))#sets the image to the position
def is_collided_with(self, sprite):#is the eat function
return self.rect.colliderect(sprite.rect)
def checkEnergy(self):
EnergyVal=self.energy
return EnergyVal
def reproduce(self,energy,Xpos,Ypos):
if energy==10:
prey = Prey(prey_image,Xpos,Ypos )
all_sprites.add(prey)
Rabbit_group.add(prey)
self.energy-=4
class Predator(Animal):#class for predators
def __init__(self):
image = pygame.image.load('Icon.png')
self.energy=10
super().__init__(image, 600, 700)
class Prey(Animal):
"""prey class"""
def __init__(self, image, x, y):
super().__init__(image, x, y)
self.energy=10
#self.rect = self.image.get_rect(center = (self.x, self.y))
class Carrot(pygame.sprite.Sprite):#food for prey class
def __init__(self):
super().__init__()
self.x = 100
self.y = 100
self.image = pygame.image.load('carrot.png')
self.rect = self.image.get_rect(center = (self.x, self.y))
# Functions-----------
def Track(AgressorX,DefenderX,AgressorY,DefenderY):#finds comapres X and Y, tells sprite how to move
if AgressorX > DefenderX:
XMovement=-1
elif AgressorX< DefenderX:
XMovement=1
else:
XMovement=0
if AgressorY > DefenderY:
YMovement=-1
elif AgressorY < DefenderY:
YMovement=1
else:
YMovement=0
return XMovement, YMovement
def leavingWindow(Xpos, Ypos):#boundry, keeps sprites in the window
if Xpos<=0:
return True
elif Xpos>=950:
return True
if Ypos<=0:
return True
elif Ypos>=750:
return True
def Boundry(Xpos, Ypos):
if Xpos<=0:
Xmovement=0
elif Xpos>=950:
Xmovement=950
else:
Xmovement=+0
if Ypos<=0:
ymovement=0
elif Ypos>=750:
ymovement=60
else:
ymovement=+0
return Xmovement, ymovement
pygame.init()#setsup pygame
screen = pygame.display.set_mode((1000,800))#setsup screen
clock = pygame.time.Clock()#tells program how fast to update
timmer = 1#how long program has gone on for
#setsup the classes
predator = Predator()
predator2=Predator()
#prey = Prey()
carrot = Carrot()
all_sprites = pygame.sprite.Group()
prey_image = pygame.image.load('Prey.png')
carrot_group = pygame.sprite.Group()
carrot_group.add(Carrot())
Wolf_group= pygame.sprite.Group()
Wolf_group.add(Predator())
Rabbit_group= pygame.sprite.Group()
for i in range(0, 2):
prey = Prey(prey_image, 100 * i, 700)
all_sprites.add(prey)
Rabbit_group.add(prey)
#setsup the classes as sprites
all_sprites.add(carrot_group)
all_sprites.add(Wolf_group)
all_sprites.add(Rabbit_group)
#start of program
running=True
while running:
clock.tick(60)
for event in pygame.event.get():
if event.type==pygame.QUIT:
running=False
carrots = carrot_group.sprites()
preys = Rabbit_group.sprites()
predators = Wolf_group.sprites()
if len(preys) > 0:
for wolf in Wolf_group:
movementx, movementy = Track(wolf.x, preys[0].x, wolf.y, preys[0].y)#how the predators move
wolf.move(0,1)#movementx, #movementy)
Leaving=leavingWindow(wolf.x,wolf.y)#keeps sprites in window
if Leaving == True:
movementx,movementy=Boundry(wolf.x,wolf.y)
wolf.x=movementx
wolf.y=movementy
if len(carrots) > 0:
for rabbit in Rabbit_group:
movementx, movementy = Track(rabbit.x, carrots[0].x, rabbit.y, carrots[0].y)#how the prey move
rabbit.move(movementx, movementy)
energyval=prey.checkEnergy()
rabbit.reproduce(energyval,600,700)
screen.fill((0,128,0))#background
all_sprites.draw(screen)#makes the sprites
pygame.display.update()#updates screen
timmer=timmer+1
for carrot in carrots:#removes the carrots if they contact a rabbit
for rabbit in Rabbit_group:
if rabbit.is_collided_with(carrot):
print('works')
carrot.kill()
for wolf in Wolf_group:
for rabbit in Rabbit_group:
if rabbit.is_collided_with(wolf):
print("works 2")
rabbit.kill()
pygame.quit()
exit()
此处为MRE：
import pygame,sys
import random
import pdb
from pygame.locals import *
class Animal(pygame.sprite.Sprite):#main class
def __init__(self, image, x, y):
super().__init__()
self.x = x
self.y = y
self.image = image
self.rect = self.image.get_rect(center = (x, y))
self.Energy=10
def move(self, mx, my):#moves the sprite
self.x += mx
self.y += my
self.rect = self.image.get_rect(center = (self.x, self.y))#sets the image to the position
def checkEnergy(self):
EnergyVal=self.energy
return EnergyVal
def reproduce(self,energy,Xpos,Ypos):
if energy==10:
prey = Prey(prey_image,Xpos,Ypos )
all_sprites.add(prey)
Rabbit_group.add(prey)
self.energy-=4
class Prey(Animal):
"""prey class"""
def __init__(self, image, x, y):
super().__init__(image, x, y)
self.energy=10
#self.rect = self.image.get_rect(center = (self.x, self.y))
pygame.init()#setsup pygame
screen = pygame.display.set_mode((1000,800))#setsup screen
clock = pygame.time.Clock()#tells program how fast to update
timmer = 1#how long program has gone on for
prey_image = pygame.image.load('Prey.png')
Rabbit_group= pygame.sprite.Group()
all_sprites=pygame.sprite.Group()
for i in range(0, 2):
prey = Prey(prey_image, 100 * i, 700)
all_sprites.add(prey)
Rabbit_group.add(prey)
#setsup the classes as sprites
all_sprites.add(Rabbit_group)
#start of program
running=True
while running:
clock.tick(60)
for event in pygame.event.get():
if event.type==pygame.QUIT:
running=False
preys = Rabbit_group.sprites()
for rabbit in Rabbit_group:
rabbit.move(0, -1)
energyval=prey.checkEnergy()
rabbit.reproduce(energyval,600,700)
screen.fill((0,128,0))#background
all_sprites.draw(screen)#makes the sprites
pygame.display.update()#updates screen
timmer=timmer+1
pygame.quit()
exit()
我很确定问题是self.energy-=4。我认为它不能正常工作，但我不确定如何解决它。
我做了一个类函数，一旦动物吃够了一组食物，就可以繁殖[…]
您在错误的地方进行评估。
if len(carrots) > 0:
for rabbit in Rabbit_group:
movementx, movementy = Track(rabbit.x, carrots[0].x, rabbit.y, carrots[0].y)#how the prey move
rabbit.move(movementx, movementy)
# energyval=prey.checkEnergy() <--- DELETE
# rabbit.reproduce(energyval,600,700) <--- DELETE
兔子吃胡萝卜时增加能量。如果能量达到阈值，则繁殖兔子：
class Animal(pygame.sprite.Sprite):#main class
# [...]
def reproduce(self):
if self.energy >= 10:
prey = Prey(self.image, self.x, self.y)
all_sprites.add(prey)
Rabbit_group.add(prey)
self.energy -= 4
while running:
# [...]
for carrot in carrots:#removes the carrots if they contact a rabbit
for rabbit in Rabbit_group:
if rabbit.is_collided_with(carrot):
print('works')
carrot.kill()
rabbit.energy += 1
rabbit.reproduce()