python写的贪吃蛇改进版
使用方向键控制贪吃蛇，有分数显示，添加开始按钮。
import pygame from pygame.sprite import Group,Sprite import pygame.sysfont import sys import random import time def run_game(): pygame.init() screen = pygame.display.set_mode((500,500)) pygame.display.set_caption("snake") #背景色 bg = (80,80,80) screen.fill(bg) #图片 img = pygame.image.load("QR.png") img_rect = img.get_rect() #获取外接矩形 screen_rect = screen.get_rect() img_rect.centerx = screen_rect.centerx #中心坐标 #img_rect.bottom = screen_rect.bottom #下边缘 #移动步长 step_len = 10 #前进方向 left = 1 top = 2 right = 3 bottom = 4 direction = left class Button(): def __init__(self,screen,msg): self.screen = screen self.screen_rect = screen.get_rect self.width = 100 self.height = 50 self.btn_color = (255,0,0) self.text_color = (255,255,255) self.font = pygame.font.SysFont(None,30) self.rect = pygame.Rect(0,0,self.width,self.height) self.rect.center = screen_rect.center self.msg_img = self.font.render(msg,True,self.text_color,self.btn_color)#将文本渲染为图片 def draw_btn(self): self.screen.fill(self.btn_color,self.rect) self.msg_img_rect = self.msg_img.get_rect() self.msg_img_rect.center = self.rect.center # 居中 self.screen.blit(self.msg_img,self.msg_img_rect) class Point(): def __init__(self,screen): self.screen = screen self.screen_rect = screen.get_rect() self.btn_color = (70,70,70) self.text_color = (255,255,255) self.font = pygame.font.SysFont(None,30) self.point = 0 def draw_point(self): msg = str(self.point) self.msg_img = self.font.render(msg, True, self.text_color, self.btn_color) # 将文本渲染为图片 self.msg_img_rect = self.msg_img.get_rect() self.msg_img_rect.top = 0 self.msg_img_rect.left = self.screen_rect.left self.screen.blit(self.msg_img,self.msg_img_rect) class SnakeItem(Sprite): len = 0 def __init__(self,x,y,color): super().__init__() self.x = x self.y = y self.color = color #蛇 item = SnakeItem(screen_rect.centerx,screen_rect.centery,(255,255,255)) snake = [] snake.append(item) #食物 def set_food(): while True: x = 0 y = 0 while True: x = random.randrange(0,screen_rect.width) if x % 10 == 0: break while True: y = random.randrange(0,screen_rect.height) if y % 10 == 0: break for i in snake: if i.x == x and i.y == y: continue return SnakeItem(x,y,(255,0,0)) temp_rect = set_food() btn_start = Button(screen,"start") start_flag = False points = Point(screen) while True: #方向 for event in pygame.event.get():#键盘 鼠标 事件 if event.type == pygame.QUIT: sys.exit() elif event.type == pygame.KEYDOWN: if event.key == pygame.K_RIGHT: direction = right elif event.key == pygame.K_LEFT: direction = left elif event.key == pygame.K_UP: direction = top elif event.key == pygame.K_DOWN: direction = bottom elif event.type == pygame.MOUSEBUTTONDOWN: mouse_x,mouse_y = pygame.mouse.get_pos() if btn_start.rect.collidepoint(mouse_x,mouse_y): start_flag = False if start_flag else True #screen.blit(img,img_rect)#在指定位置绘制 #背景 screen.fill(bg) if not start_flag : btn_start.draw_btn() points.draw_point() pygame.display.flip() continue #食物 rect = pygame.Rect(temp_rect.x,temp_rect.y,10,10) pygame.draw.rect(screen,temp_rect.color,rect) #蛇 item_head = snake[0] xx = snake[0].x yy = snake[0].y if direction == left: xx -= step_len if xx < 0: continue elif direction == top: yy -= step_len if yy < 0: continue elif direction == right: xx += step_len if xx >= screen_rect.right: continue elif direction == bottom: yy += step_len if yy >= screen_rect.bottom: continue #snake.append(item_head) #不知为何snake中的坐标是一样的？ nn = SnakeItem(xx,yy,(255,255,255)) snake.insert(0,nn) if item_head.x == temp_rect.x and item_head.y == temp_rect.y: temp_rect = set_food() points.point +=1 points.draw_point() for i in snake: r = pygame.Rect(i.x, i.y, 10, 10) pygame.draw.rect(screen, i.color, r) pygame.display.flip() # 最近绘制的屏幕可见 else: snake.pop() points.draw_point() for i in snake: r = pygame.Rect(i.x, i.y, 10, 10) pygame.draw.rect(screen, i.color, r) pygame.display.flip() # 最近绘制的屏幕可见 time.sleep(0.3) # print("--------------") # for i in snake: # print(i.x,i.y) run_game()
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