如何解决Python Pygame蛇游戏项目混乱
我正在为我的大学作业创建一个基本的蛇游戏项目,我需要一些帮助来了解我在这里做错了什么。
import pygame
import random
# --- Globals ---
# Colors
BLACK = (0,0)
WHITE = (255,255,255)
RED = (255,0)
GREEN = (0,0)
# Screen size
height = 600
width = 600
# Margin between each segment
segment_margin = 3
# Set the width and height of each snake segment
segment_width = min(height,width) / 40 - segment_margin
segment_height = min(height,width) / 40 - segment_margin
# Set initial speed
x_change = segment_width + segment_margin
y_change = 0
class Snake():
""" Class to represent one snake. """
# Constructor
def __init__(self):
self.segments = []
self.spriteslist = pygame.sprite.Group()
for i in range(15):
x = (segment_width + segment_margin) * 30 - (segment_width + segment_margin) * i
y = (segment_height + segment_margin) * 2
segment = Segment(x,y)
self.segments.append(segment)
self.spriteslist.add(segment)
def move(self):
# Figure out where new segment will be
x = self.segments[0].rect.x + x_change
y = self.segments[0].rect.y + y_change
# Don't move off the screen
# At the moment a potential move off the screen means nothing happens,but it should end the game
if 0 <= x <= width - segment_width and 0 <= y <= height - segment_height:
# Insert new segment into the list
segment = Segment(x,y)
self.segments.insert(0,segment)
self.spriteslist.add(segment)
# Get rid of last segment of the snake
# .pop() command removes last item in list
old_segment = self.segments.pop()
self.spriteslist.remove(old_segment)
else:
return
self.eat()
def eat(self):
hit_list = pygame.sprite.spritecollide(self.segments[0],Food().foodlist,True)
if len(hit_list) == 1:
food.foodlists.pop(0)
food.foodlist.empty()
self.grow()
elif len(food.foodlists) == 0:
Food().replenish()
def grow(self):
x = self.segments[0].rect.x + x_change
y = self.segments[0].rect.y + y_change
segment = Segment(x,y)
self.segments.insert(len(self.segments),segment)
self.spriteslist.add(segment)
class Segment(pygame.sprite.Sprite):
""" Class to represent one segment of a snake. """
# Constructor
def __init__(self,x,y):
# Call the parent's constructor
super().__init__()
# Set height,width
self.image = pygame.Surface([segment_width,segment_height])
self.image.fill(WHITE)
# Set top-left corner of the bounding rectangle to be the passed-in location.
self.rect = self.image.get_rect()
self.rect.x = x
self.rect.y = y
foodx = random.choice([i for i in range(0,600,15)])
foody = random.choice([i for i in range(0,15)])
class Food():
def __init__(self):
self.foodlists = []
self.foodlist = pygame.sprite.Group()
fooditem = Food_item(foodx,foody)
self.foodlists.append(fooditem)
self.foodlist.add(fooditem)
def replenish(self):
newfoodx = random.choice([i for i in range(0,15)])
newfoody = random.choice([i for i in range(0,15)])
fooditem = Food_item(newfoodx,newfoody)
self.foodlists.append(fooditem)
self.foodlist.add(fooditem)
class Food_item(pygame.sprite.Sprite):
def __init__(self,fx,fy):
# Call the parent's constructor
super().__init__()
# Set height,segment_height])
self.image.fill(RED)
# Set top-left corner of the bounding rectangle to be the passed-in location.
self.rect = self.image.get_rect()
self.rect.x = fx
self.rect.y = fy
# Call this function so the Pygame library can initialize itself
pygame.init()
# Create a 600x600 sized screen
screen = pygame.display.set_mode([width,height])
# Set the title of the window
pygame.display.set_caption('Snake Game')
# Create an initial snake
my_snake = Snake()
food = Food()
clock = pygame.time.Clock()
done = False
while not done:
for event in pygame.event.get():
if event.type == pygame.QUIT:
done = True
# Set the direction based on the key pressed
# We want the speed to be enough that we move a full
# segment,plus the margin.
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_LEFT:
x_change = (segment_width + segment_margin) * -1
y_change = 0
if event.key == pygame.K_RIGHT:
x_change = (segment_width + segment_margin)
y_change = 0
if event.key == pygame.K_UP:
x_change = 0
y_change = (segment_height + segment_margin) * -1
if event.key == pygame.K_DOWN:
x_change = 0
y_change = (segment_height + segment_margin)
# move snake one step
my_snake.move()
# -- Draw everything
# Clear screen
screen.fill(BLACK)
my_snake.spriteslist.draw(screen)
food.foodlist.draw(screen)
# Flip screen
pygame.display.flip()
# Pause
clock.tick(5)
pygame.quit()
在我的程序中,蛇从食物清单精灵组中“吃”了一个精灵,将其删除并调用了grow函数。我现在正尝试在食品类中编程一种补充方法,以随机放置新的食物来代替食用的食物。目前,我对补充功能的实现无法正常工作,我无法弄清原因。我对编程非常陌生,尤其是使用python类时,非常感谢您的帮助。谢谢!
解决方法
每次您吃食物时,都会创建一个新的function mobileMenu(event) {
event.currentTarget.classList.toggle("clicked");
[].forEach.call(document.querySelectorAll('ul li a'),function(a){
a.classList.remove('clicked');
});
}
实例,并将一个新的Food
附加到新实例上。将新的Food_item
添加到Food_item
的现有实例中:
Food
Food().replenish()
方法food.replenish()
:
eat
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