Pycharm运行代码后，pygame窗口不显示

Question

import random
import sys
import time
import pygame
from pygame.locals import *
from collections import deque
import math

SCREEN_WIDTH = 260 # 屏幕宽度
SCREEN_HEIGHT = 260 # 屏幕高度
SIZE = 20 # 小方格大小
LINE_WIDTH = 1 # 网格线宽度

游戏区域的坐标范围

SCOPE_X = (0, SCREEN_WIDTH // SIZE - 1)
SCOPE_Y = (0, SCREEN_HEIGHT // SIZE - 1)

食物的分值及颜色

FOOD_STYLE_LIST = [(1, (255, 255, 255)), (20, (100, 255, 100)), (30, (100, 100, 255))] #都用绿色，得分1分

LIGHT = (100, 100, 100)
DARK = (200, 200, 200) # 蛇的颜色
BLACK = (0, 0, 0) # 网格线颜色
RED = (255, 255, 255) # 红色，GAME OVER 的字体颜色
BGCOLOR = (40, 40, 60) # 背景色

def print_text(screen, font, x, y, text, fcolor=(255, 255, 255)):
imgText = font.render(text, True, fcolor)
screen.blit(imgText, (x, y))

初始化蛇

def init_snake():
snake = deque()
snake.append((7, SCOPE_Y[0]+6))
snake.append((6, SCOPE_Y[0]+6))
snake.append((5, SCOPE_Y[0]+6))
return snake

def create_food(snake):
food_x = random.randint(SCOPE_X[0], SCOPE_X[1])
food_y = random.randint(SCOPE_Y[0], SCOPE_Y[1])
while (food_x, food_y) in snake:
# 如果食物出现在蛇身上，则重来
food_x = random.randint(SCOPE_X[0], SCOPE_X[1])
food_y = random.randint(SCOPE_Y[0], SCOPE_Y[1])
return food_x, food_y

def get_food_style():
return FOOD_STYLE_LIST[0]

class GameState:
def init(self):
pygame.init()
self.screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))
pygame.display.set_caption('GluttonousSnake')
# 蛇
self.snake = init_snake()
# 食物
self.food = create_food(self.snake)
self.food_style = get_food_style()
# 方向
self.pos = (1, 0)
self.game_over = False
self.score = 0 # 得分
# self.speed = 0.1

def frame_step(self,input_actions):
    terminal = False
    reward = 0.1

    # 检测输入正确性
    if input_actions[0] == 1 or input_actions[1]== 1 or input_actions[2]== 1 or input_actions[3] == 1:  # 检查输入正常
        if input_actions[0] == 1 and input_actions[1] == 0 and input_actions[2] == 0 and input_actions[3] == 0 and self.pos != (0,1):
            # 这个判断是为了防止蛇向上移时按了向下键，导致直接 GAME OVER  向上
            self.pos = (0, -1)

        elif input_actions[0] == 0 and input_actions[1] == 1 and input_actions[2] == 0 and input_actions[3] == 0 and self.pos != (0,-1):
            #向下
            self.pos = (0, 1)
        elif input_actions[0] == 0 and input_actions[1] == 0 and input_actions[2] == 1 and input_actions[3] == 0 and self.pos != (1,0):
            #向左
            self.pos = (-1, 0)
        elif input_actions[0] == 0 and input_actions[1] == 0 and input_actions[2] == 0 and input_actions[3] == 1 and self.pos != (-1,0):
            #向右
            self.pos = (1, 0)
        else:
            pass

    else:
        raise ValueError('Multiple input actions!')

    # 填充背景色
    self.screen.fill(BGCOLOR)
    # 画网格线 竖线
    for x in range(SIZE, SCREEN_WIDTH, SIZE):
        pygame.draw.line(self.screen, BLACK, (x, SCOPE_Y[0] * SIZE), (x, SCREEN_HEIGHT), LINE_WIDTH)
    # 画网格线 横线
    for y in range(SCOPE_Y[0] * SIZE, SCREEN_HEIGHT, SIZE):
        pygame.draw.line(self.screen, BLACK, (0, y), (SCREEN_WIDTH, y), LINE_WIDTH)

    next_s = (self.snake[0][0] + self.pos[0], self.snake[0][1] + self.pos[1])
    if next_s == self.food:
        # 吃到了食物
        self.snake.appendleft(next_s)
        self.score += self.food_style[0]
        self.food = create_food(self.snake)
        self.food_style = get_food_style()
        reward = 1
        # self.score += 1
    else:
        if SCOPE_X[0] <= next_s[0] <= SCOPE_X[1] and SCOPE_Y[0] <= next_s[1] <= SCOPE_Y[1] \
                and next_s not in self.snake:
            self.snake.appendleft(next_s)
            self.snake.pop()

            # dis = (math.sqrt(pow((self.food[0]-next_s[0]),2)+pow((self.food[1]-next_s[1]),2)))
            # reward = (1/dis)*0.5

        else:
            reward = -1  #死亡惩罚
            terminal = True

            # print('failure')
            self.__init__()


    print('score:%u' % self.score)



    if terminal ==True:
        font2 = pygame.font.Font(None,50 )# GAME OVER 的字体
        fwidth, fheight = font2.size('GAME OVER')
        print_text(self.screen, font2, (SCREEN_WIDTH - fwidth) // 2, (SCREEN_HEIGHT - fheight) // 2, 'GAME OVER', RED)
    else:
        # 画食物
        if reward != 1:
            pygame.draw.circle(self.screen, DARK,
                               (self.food[0] * SIZE + LINE_WIDTH + 10, self.food[1] * SIZE + LINE_WIDTH + 10), 10,
                               0)
        # 画蛇
        flag = 0
        for s in self.snake:
            if flag == 0:
                pygame.draw.circle(self.screen, DARK, (s[0] * SIZE + LINE_WIDTH+10, s[1] * SIZE + LINE_WIDTH+10),10, 0)
                flag = 1
            else:
                pygame.draw.rect(self.screen, DARK, (s[0] * SIZE + LINE_WIDTH, s[1] * SIZE + LINE_WIDTH,
                                            SIZE - LINE_WIDTH * 2, SIZE - LINE_WIDTH * 2), 0)


    image_data = pygame.surfarray.array3d(pygame.display.get_surface())
    pygame.display.update()
    clock = pygame.time.Clock()
    clock.tick(90)
    return image_data, reward, terminal,self.score

Answer 1

https://blog.csdn.net/weixin_44921292/article/details/93657426