我正在做一个游戏，我发现了一些令我烦恼的事情。苹果在蛇里面产卵。我定义了蛇头（sh），它是唯一与苹果相互作用的功能。不是蛇的其他部分。那么，你怎么做到这一点不会发生？
我尝试使用Pygame Snake - Apple spawning inside snake并编辑它以使其工作。我尝试在pygame矩形碰撞代码上创建一个if语句。
import pygame
import os
import sys
pygame.mixer.pre_init()
pygame.mixer.init(44100, 16, 2, 262144)
pygame.init()
from pygame.locals import*
import cv2
import time
import random
import pickle
import shutil
import OpenGL
dw = 1280
dh = 720
at = 40
bs = 20
screen = pygame.display.set_mode((dw, dh))
clock = pygame.time.Clock()
def pause():
paused = True
while paused:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
sys.exit()
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_ESCAPE:
paused = False
elif event.key == pygame.K_SPACE:
menu(1)
screen.fill(white)
mts("Paused", black, -100, 100)
mts("Press esc to go back to the game or press space to go back to the menu", black, 25, 45)
pygame.display.update()
clock.tick(60)
#define the apple to spawn in a random place
def randAppleGen():
randAppleX = random.randrange(0, dw-at, bs)
randAppleY = random.randrange(0, dh-at, bs)
return randAppleX,randAppleY
def snake(bs, sl):
for XnY in sl:
pygame.draw.rect(screen, Dgreen, [XnY[0],XnY[1],bs,bs])
def gameLoop():
global at
global bs
hs = pickle.load( open( os.getenv('APPDATA')+str('/Snake Universe/h.SNUN'), "rb" ) )
gameExit = False
gameOver = False
gameHack = False
Speed = 20
lead_x = dw/2
lead_y = dh/2
lead_x_change = 0
lead_y_change = 0
pygame.mixer.music.load(os.path.join(os.getcwd(), 'Sounds', 'music1.ogg'))
pygame.mixer.music.play(-1)
slist = []
sl = 0
if sl > 2304:
gameHack = True
randAppleX,randAppleY = randAppleGen()
while not gameExit:
while gameOver == True:
screen.fill(white)
mts("Game over", red, -50,100)
mts("Press enter to play again or press space to go back to the menu", black, 50,50)
pygame.display.update()
for event in pygame.event.get():
if event.type == pygame.QUIT:
gameOver = False
gameExit = True
pygame.quit()
sys.exit()
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_KP_ENTER or event.key==pygame.K_RETURN:
gameLoop()
if event.key == pygame.K_SPACE:
gameExit = False
gameOver = False
menu(1)
while gameHack == True:
pygame.mixer.music.stop()
screen.fill(white)
mts("Hacked", red, -50,100)
mts("You hacked or exploit the game, press enter to quit the game", black, 50,50)
pygame.display.update()
for event in pygame.event.get():
if event.type == pygame.QUIT:
gameOver = False
gameExit = True
pygame.quit()
sys.exit()
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_KP_ENTER or event.key==pygame.K_RETURN:
pygame.quit()
sys.exit()
for event in pygame.event.get():
if event.type == pygame.QUIT:
gameExit = True
pygame.quit()
sys.exit()
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_LEFT and lead_x_change != bs:
lead_x_change = -bs
lead_y_change = 0
elif event.key == pygame.K_RIGHT and lead_x_change != -bs:
lead_x_change = bs
lead_y_change = 0
elif event.key == pygame.K_UP and lead_y_change != bs:
lead_y_change = -bs
lead_x_change = 0
elif event.key == pygame.K_DOWN and lead_y_change != -bs:
lead_y_change = bs
lead_x_change = 0
elif event.key == pygame.K_ESCAPE:
pause()
elif event.key == pygame.K_s and Speed >= 10 and Speed < 60:
Speed += 10
clock.tick(Speed)
elif event.key == pygame.K_d and Speed <= 60 and Speed > 10:
Speed -= 10
clock.tick(Speed)
if not pygame.Rect(0, 0, dw, dh).contains(lead_x, lead_y, bs, bs):
gameOver = True
lead_x += lead_x_change
lead_y += lead_y_change
screen.fill(white)
#draw the apple
apple = pygame.draw.rect(screen, red, [randAppleX,randAppleY,at,at])
sh = []
sh.append(lead_x)
sh.append(lead_y)
slist.append(sh)
snake(bs, slist)
if len(slist) > sl:
del slist[0]
for eachSegment in slist[:-1]:
if eachSegment == sh:
gameOver = True
score(sl)
highscore(hs)
if sl > hs:
hs += 1
os.remove( os.getenv('APPDATA')+str('/Snake Universe/h.SNUN') )
pickle.dump( sl, open( os.getenv('APPDATA')+str('/Snake Universe/h.SNUN'), "wb" ) )
hs = pickle.load( open( os.getenv('APPDATA')+str('/Snake Universe/h.SNUN'), "rb" ) )
pygame.display.update()
#make the apple spawn
if lead_x > randAppleX and lead_x < randAppleX + at or lead_x + bs > randAppleX and lead_x + bs < randAppleX + at:
if lead_y > randAppleY and lead_y < randAppleY + at:
randAppleX,randAppleY = randAppleGen()
sl += 1
elif lead_y + bs > randAppleY and lead_y + bs < randAppleY + at:
randAppleX,randAppleY = randAppleGen()
sl += 1
clock.tick(Speed)
pygame.quit()
quit()
我预计它不会在蛇中产卵，但确实如此。
苹果覆盖的区域大于蛇的一部分。
你必须使用pygame.Rect.collidepoint()验证蛇是否在苹果区域：
appleRect = pygame.Rect(randAppleX, randAppleY, at, at)
if appleRect.collidepoint(lead_x, lead_y):
# [...]
蛇由头部和身体部位列表组成。如果生成苹果的新随机位置，那么你要验证苹果是否不覆盖头部而不是身体的any部分：
if not appleRect.collidepoint(lead_x, lead_y) and \
not any(appleRect.collidepoint(*p) for p in slist):
# [...]
产生新苹果的代码可能如下所示：
appleRect = pygame.Rect(randAppleX, randAppleY, at, at)
if appleRect.collidepoint(lead_x, lead_y):
while True:
randAppleX, randAppleY = randAppleGen()
appleRect = pygame.Rect(randAppleX, randAppleY, at, at)
if not appleRect.collidepoint(lead_x, lead_y) and \
not any(appleRect.collidepoint(*p) for p in slist):
break
sl += 1