我不知道如何生成供蛇吃的食物。我知道第 97 行和第 98 行蛇的位置，我创建了一个类来生成一个像素，我想在第 22 行绘制食物的和平(编辑:应该是一个函数，评论 #def (?)编码)。我所要做的就是从随机分配的位置在 x 和 y 坐标处添加 15 个像素并打印它以获得一个块。
问题是检查我是否吃了它。它应该是这样的:
if x >= x_food && x <= x_food + 15 || y >= y_food && y <= y_food + 15:
...add a point and make snake longer...
问题是出于某种原因把它们放在一起。有人能给我一个提示或解决我应该如何编写这个类以便我可以继续解决其他问题吗？谢谢!
import pygame
import random
#Global variables
#Color
BLACK = (0, 0, 0)
WHITE = (255, 255, 255)
#Start length of snake
snake_length = 3
#Set the width of the segments of the snake
segment_width = 15
segment_height = 15
# Margin within each segment
segment_margin = 3
#Set initial speed
x_change = segment_width + segment_margin
y_change = 0
#def (?)
class Food():
#Class to print food
x_food = random.randint(0, 785)
y_food = random.randint(0, 585)
class Segment(pygame.sprite.Sprite):
""" Class to represent the segment of the snake. """
# Methods
# Constructer function
def __init__(self, x, y):
#Call the parents constructor
super().__init__()
#Set height, width
self.image = pygame.Surface([segment_width, segment_height])
self.image.fill(WHITE)
#Make our top-left corner the passed-in location.
self.rect = self.image.get_rect()
self.rect.x = x
self.rect.y = y
#Call this function so the Pygame library can initialize itself
pygame.init()
#Create an 800x600 size screen
screen = pygame.display.set_mode([800, 600])
#Set the title of the window
pygame.display.set_caption("Snake")
allspriteslist = pygame.sprite.Group()
#Create an initial snake
snake_segments = []
for i in range(snake_length):
x = 250 - (segment_width + segment_margin) * i
y = 30
segment = Segment(x, y)
snake_segments.append(segment)
allspriteslist.add(segment)
clock = pygame.time.Clock()
done = False
while not done:
for event in pygame.event.get():
if event.type == pygame.QUIT:
done = True
#Set the speed 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_width + segment_margin)
#Get rid of last segment of the snake
#.pop() command removes last item in list
old_segment = snake_segments.pop()
allspriteslist.remove(old_segment)
#Figure out where new segment will be
x = snake_segments[0].rect.x + x_change
y = snake_segments[0].rect.y + y_change
segment = Segment(x, y)
#Insert new segment to the list
snake_segments.insert(0, segment)
allspriteslist.add(segment)
#Draw
#Clear screen
screen.fill(BLACK)
allspriteslist.draw(screen)
#Flip screen
pygame.display.flip()
#Pause
clock.tick(5)
pygame.quit()
最佳答案
我拿了你的代码，我想我解决了一些问题，请注意，这只在蛇越过块时进行监控，然后它会打印:好吃，所以你必须添加细节，还要注意我不使用你的类生成食物:
import pygame
import random
#Global variables
#Color
BLACK = (0, 0, 0)
WHITE = (255, 255, 255)
#Start length of snake
snake_length = 3
#Set the width of the segments of the snake
segment_width = 15
segment_height = 15
# Margin within each segment
segment_margin = 3
#Set initial speed
x_change = segment_width + segment_margin
y_change = 0
#def (?)
class Food():
#Class to print food
x_food = random.randint(0, 785)
y_food = random.randint(0, 585)
class Segment(pygame.sprite.Sprite):
""" Class to represent the segment of the snake. """
# Methods
# Constructer function
def __init__(self, x, y):
#Call the parents constructor
super().__init__()
#Set height, width
self.image = pygame.Surface([segment_width, segment_height])
self.image.fill(WHITE)
#Make our top-left corner the passed-in location.
self.rect = self.image.get_rect()
self.rect.x = x
self.rect.y = y
#Call this function so the Pygame library can initialize itself
pygame.init()
#Create an 800x600 size screen
screen = pygame.display.set_mode([800, 600])
#Set the title of the window
pygame.display.set_caption("Snake")
allspriteslist = pygame.sprite.Group()
#Create an initial snake
snake_segments = []
for i in range(snake_length):
x = 250 - (segment_width + segment_margin) * i
y = 30
segment = Segment(x, y)
snake_segments.append(segment)
allspriteslist.add(segment)
clock = pygame.time.Clock()
done = False
x_food = random.randint(0, 785)
y_food = random.randint(0, 585)
while not done:
for event in pygame.event.get():
if event.type == pygame.QUIT:
done = True
#Set the speed 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_width + segment_margin)
if y < y_food+30:
if x > x_food and x < x_food+30 or x+20 > x_food and x+20<x_food+30:
print('yummy')
#Get rid of last segment of the snake
#.pop() command removes last item in list
old_segment = snake_segments.pop()
allspriteslist.remove(old_segment)
#Figure out where new segment will be
x = snake_segments[0].rect.x + x_change
y = snake_segments[0].rect.y + y_change
segment = Segment(x, y)
#Insert new segment to the list
snake_segments.insert(0, segment)
allspriteslist.add(segment)
#Draw
#Clear screen
screen.fill(BLACK)
pygame.draw.rect(screen, WHITE, [x_food, y_food, 30, 30])
allspriteslist.draw(screen)
#Flip screen
pygame.display.flip()
#Pause
clock.tick(5)
pygame.quit()
希望这有帮助，谢谢!
关于python-3.x - 如何为蛇游戏生成食物，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/38041747/