Python Pygame 项目自动化停止工作

Question

我正在尝试在 Pygame 上创建一个项目。这个想法是创建一个能够在其上玩的传统蛇游戏；即，蛇足够聪明，可以撞到边界并继续玩耍。 到目前为止，我已经创建了一个能够通过计算蛇的下一个位置来理解边界的整个游戏；即通过计算蛇在每个方向上的下一个像素位置来确定蛇的下一步移动，从而确定 XY 平面上的轨迹。

def nextMove(snake_head,x1_change,y1_change):
        
    x1=snake_head[0]
    y1=snake_head[1]
    next_left=x1-10
    next_right=x1+10
    next_top=y1-10
    next_down=y1+10

所以我确定的窗口大小是 600 x 400，所以只要蛇愿意撞墙，该值就会变为窗口分辨率的零或最大值。

所以当这种情况发生时，我会告诉我的代码将其路径更改为不同的方向，即逻辑

def nextMove(snake_head,x1_change,y1_change):
        
    x1=snake_head[0]
    y1=snake_head[1]
    next_left=x1-10
    next_right=x1+10
    next_top=y1-10
    next_down=y1+10
    #print(next_left,next_right,next_top,next_down)
 
    if next_left<0:
        x1_change=10
        y1_change=0
        x1+=x1_change
        y1+=y1_change
    if next_right>= dis_width:
        x1_change=-10
        y1_change=0
        x1+=x1_change
        y1+=y1_change
    if next_top<0:
        x1_change=0
        y1_change=10
        x1+=x1_change
        y1+=y1_change
    if next_down>=dis_height:
        x1_change=0
        y1_change=-10
        x1+=x1_change
        y1+=y1_change    
    return x1_change,y1_change

x1 是窗口蛇的先前位置，x1_change 和 y1_change 正在更新蛇位置链接到主函数以及这个。

现在虽然我声明了逻辑，但代码运行得非常好 但是当我将方向更改逻辑附加到新函数以使代码紧凑且可移动时。即，

def Leftmove():
    x1_change=-10
    y1_change=0
    x1+=x1_change
    y1+=y1_change
    return x1_change,y1_change

def Rightmove():
    x1_change=10
    y1_change=0
    x1+=x1_change
    y1+=y1_change
    return x1_change,y1_change
    
def Topmove():
    x1_change=0
    y1_change=-10
    x1+=x1_change
    y1+=y1_change
    return x1_change,y1_change

def Downmove():
    x1_change=0
    y1_change=10
    x1+=x1_change
    y1+=y1_change
    return x1_change,y1_change

def nextMove(snake_head,x1_change,y1_change):
        
    x1=snake_head[0]
    y1=snake_head[1]
    next_left=x1-10
    next_right=x1+10
    next_top=y1-10
    next_down=y1+10
    #print(next_left,next_right,next_top,next_down)
 
    if next_left<0:
        Rightmove()
    if next_right>= dis_width:
        Leftmove()
    if next_top<0:
        Dowsnmove()
    if next_down>=dis_height:
        Upmove()    
    return x1_change,y1_change

通过附加这个新函数或代码行，代码将停止工作 现在我不知道缺少什么。我在这里弄清楚了，请告诉我。欢迎提供进一步的建议和改进。

完整代码如下：

import pygame
import time
import random
import math

pygame.init()

white = (255, 255, 255)
yellow = (255, 255, 102)
black = (0, 0, 0)
red = (213, 50, 80)
green = (0, 255, 0)
blue = (50, 153, 213)

dis_width = 600
dis_height = 400

dis = pygame.display.set_mode((dis_width, dis_height))
pygame.display.set_caption('Snake Game')

clock = pygame.time.Clock()

snake_block = 10
snake_speed = 15

font_style = pygame.font.SysFont("bahnschrift", 25)
score_font = pygame.font.SysFont("comicsansms", 35)


def Your_score(score):
value = score_font.render("Your Score: " + str(score), True, yellow)
dis.blit(value, [0, 0])



def our_snake(snake_block, snake_list):
for x in snake_list:
    pygame.draw.rect(dis, black, [x[0], x[1], snake_block, snake_block])
    
    
    
def Leftmove():
x1_change=-10
y1_change=0
x1+=x1_change
y1+=y1_change
return x1_change,y1_change

def Rightmove():
x1_change=10
y1_change=0
x1+=x1_change
y1+=y1_change
return x1_change,y1_change

def Topmove():
x1_change=0
y1_change=-10
x1+=x1_change
y1+=y1_change
return x1_change,y1_change

def Downmove():
x1_change=0
y1_change=10
x1+=x1_change
y1+=y1_change
return x1_change,y1_change

def nextMove(snake_head,x1_change,y1_change):
    
x1=snake_head[0]
y1=snake_head[1]
next_left=x1-10
next_right=x1+10
next_top=y1-10
next_down=y1+10
#print(next_left,next_right,next_top,next_down)

if next_left<0:
    Rightmove()
if next_right>= dis_width:
    Leftmove()
if next_top<0:
    Dowsnmove()
if next_down>=dis_height:
    Upmove()    
return x1_change,y1_change



    

def message(msg, color):
mesg = font_style.render(msg, True, color)
dis.blit(mesg, [dis_width / 6, dis_height / 3])


def GameBody():
while game_close!=False:
    dis.fill(blue)
    message("You Lost! Press C-Play Again or Q-Quit", red)
    Your_score(Length_of_snake - 1)
    pygame.display.update()

    for event in pygame.event.get():
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_q:
                game_close=False
                game_over = True
                return game_close,game_over
            if event.key == pygame.K_c:
                GameBody()

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            game_over = True
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_LEFT:
                x1_change = -10
                y1_change = 0
            elif event.key == pygame.K_RIGHT:
                x1_change = 10
                y1_change = 0
            elif event.key == pygame.K_UP:
                y1_change = -10
                x1_change = 0
            elif event.key == pygame.K_DOWN:
                y1_change = 10
                x1_change = 0
    
    
    
    
    if x1 >= dis_width or x1 < 0 or y1 >= dis_height or y1 < 0:
        game_close = True
    x1 += x1_change
    y1 += y1_change
    return x1,y1
    
    dis.fill(blue)
    pygame.draw.rect(dis, green, [foodx, foody, snake_block, snake_block])
    snake_Head = []
    snake_Head.append(x1)
    snake_Head.append(y1)
    snake_List.append(snake_Head)
    #print(snake_Head)
    #print(snake_List)
    if len(snake_List) > Length_of_snake:
        del snake_List[0]

   # Snake Hits Its Own Body    
    """
    for x in snake_List[:-1]:
        if x == snake_Head:
            game_close = True

    """
    our_snake(snake_block, snake_List)
    x1_change, y1_change = nextMove(snake_Head, x1_change, y1_change)
    Your_score(Length_of_snake - 1)
    pygame.display.update()
    
        
    #calculating distance
    def Distance():
        x=snake_Head[0]
        y=snake_Head[1]
        dis_fleft=foodx-x
        dis_fright=foody-y
        dis_food=foodx-x+foody-y
        print(dis_fleft,dis_fright,dis_food)
    Distance()

    

    if x1 == foodx and y1 == foody:
        foodx = round(random.randrange(0, dis_width - snake_block) / 10.0) * 10.0
        foody = round(random.randrange(0, dis_height - snake_block) / 10.0) * 10.0
        Length_of_snake += 1

    clock.tick(snake_speed)

game_over = False 
game_over = False
def gameLoop():

x1 = dis_width / 2
y1 = dis_height / 2

x1_change = 0
y1_change = 0

snake_List = []
Length_of_snake = 1

foodx = round(random.randrange(0, dis_width - snake_block) / 10.0) * 10.0
foody = round(random.randrange(0, dis_height - snake_block) / 10.0) * 10.0

while game_over!=True:
    GameBody()      
pygame.quit()
quit()


gameLoop()

Answer 1

好吧，我可能错了，可能遗漏了一些东西，但在 leftmove、rightmove、topmove 和 downmove 函数中，您正在更新 x1、y1、@987654327 的值@ 和 y1_change 变量，但您没有将它们作为参数传递，因此您会收到错误消息。此外，由于这些函数返回x1_change 和y1_change 的值，因此在next_move 函数中您应该执行x1_change, y1_change = leftmove()，因为nextmove 也返回x1_change 和y1_change 的值。 如果我错了，请告诉我。