Question

我想实现一个Snake游戏。该程序运行良好，直到蛇与食物碰撞并产生新的身体部位为止。我正在尝试通过以下步骤使此身体部位跟随我的玩家控制的蛇头（在代码中称为player ）

：

bodypart是在与头部相同的方向和速度的世界（屏幕）中创建并绘制的，位于头部的侧面（取决于蛇的来源）。这部分有效。
当检测到键盘输入时，将蛇的x和y位置记录在列表中，然后改变方向。这也可以。

身体部位继续移动，直到蛇的x和y坐标==身体部位的x和y坐标为止。在这种情况下，身体部位应改变方向并跟随蛇移动。这部分不起作用。（身体部位继续移动超过记录的x / y坐标点，直到离开屏幕才改变方向）

''' 
setup
'''
import pygame
import random
import sys
import os
lefta = pygame.K_LEFT
leftk = ord("a")
Black = [0,0,0]
counter = 0
bodypartspawn = "False"
player_locationx = []
player_locationy = []
worldx = 1600
worldy = 900
fps = 5
ani = 100
clock = pygame.time.Clock()
pygame.init()
world = pygame.display.set_mode([worldx, worldy])

class BodyPart(pygame.sprite.Sprite):
 def __init__(self):
        pygame.sprite.Sprite.__init__(self)
        self.movex = player.movex
        self.movey = player.movey
        self.frame = 0
        self.images = []
        img = pygame.image.load(os.path.join('images','white_block.png')).convert()
        self.images.append(img)
        self.image = self.images[0]
        self.image = pygame.transform.scale(self.image, (50, 50))
        self.rect  = self.image.get_rect()
 def controlbodypart(self):
        global counter
        if self.rect.x == player_locationx[counter] and self.rect.y == player_locationy[counter]:
         counter = counter +1
         if direction == "left":           
          self.movex = -10      
          self.movey = 0
         if direction == "right":
          self.movex = 10
          self.movey = 0
         if direction == "up":
          self.movex = 0
          self.movey = -10
         if direction == "down":
          self. movex = 0
          self.movey = 10

    def updateofbodypart(self):
        self.rect.x = self.rect.x + self.movex
        self.rect.y = self.rect.y + self.movey


'''
Main Loop
'''
Main = True
while Main == True:
 for event in pygame.event.get():
   if event.type == pygame.KEYDOWN:
    if leftk == event.key and direction !="right" or lefta == event.key and direction !="right": 
#this if statement is repeated for all four directions
     direction = "left"
     if bodypartspawn == "True":
      player_locationx.append(player.rect.x) #player class is defined in my code, but i did not copy it here
      player_locationy.append(player.rect.y)
      #print (player_locationx) and
      #print (player_locationy) were used to test if the lists work. They show the correct coordinates.
      bodypart.controlbodypart()
     player.control(-10, 0) #this changes direction of the snake head
 if player.rect.colliderect(food.rect): #food class is defined in my code, but i have not copied it here
  food.kill()
  food = Food()
  food.rect.x = random.randint(80, 1500)
  food.rect.y = random.randint(80, 800)
  player_list.add(food)
  if direction == "left":
   bodypart = BodyPart()
   bodypart.rect.x = player.rect.x+50 #snake head and body are 50 pixels large, thats why i move it this distance to the side
   bodypart.rect.y = player.rect.y
  bodypartspawn = "True"
 player.updateofplayer()
 if bodypartspawn =="True": 
  player_list.add(bodypart)
  bodypart.updateofbodypart()
 world.fill (Black)
 player_list.draw(world)
 pygame.display.flip()
 clock.tick(fps)

我尽力删除了与该问题无关的所有内容，但是我的代码相当复杂且杂乱无章，因此我可能已删除了一些对您的理解至关重要的内容。如果是这样，请告诉我，我会编辑。

再次：我没有收到任何错误消息，除了上述问题，其他所有东西都很好。

蛇游戏：尝试使身体部位跟随玩家控制的头部

0 个答案: